Economic and Environmental Impact of National Food Security Act of India

The Government of India has enacted the National Food Security Act (NFSA) on September 12, 2013. The NFSA aims to provide subsidized food grains to approximately two thirds of India’s population. The legislation is a landmark, and perhaps the largest food security program in the world. The ambitious programme of the Government, besides offering several opportunities, throws many challenges in its implementation. In this background, the current paper evaluates the widespread impact of implementing NFSA on the Indian economy. The study applied a modified Leontief and Ghosh model under Input–output framework. The study also assessed the environmental impact of this act focusing on various environmental indicators. Further, the additional land requirement, labour generation and GDP growth that NFSA entails have also been computed. The impacts on sectoral prices have also been calculated. The result shows that the food grain sector has to grow by 3.75 % annually to match provision of food grains according to the norm set by the act. Apart from the targeted food grains sector, we noticed some indirect impact on other sectors such as Chemicals and Chemical Products, Mineral Fuels, Live stock products and Other Oilseeds and Crops. Overall the country needs to gear up in terms of food grain productivity, otherwise, NFSA must be supplemented by import, which would entail huge burden to country’s exchequer. On the other hand, the additional GDP and labour growth is expected to generate 1.51 % and 6.21 % respectively due to NFSA compared to 2016–17. But the impact on the environment is also not favourable. The economy is likely to generate additional GHG emissions of 10.39 million metric tonne of CO2 equivalent due to this act. A significant generation of water pollution is also expected. The overall land requirement on account of NFSA has been found to be sizeable whose availability remains as a big constraint. The study also throws some insight on the achievements of The Millennium Development Goals in the context of NFSA. In the context of Indian sub-continent, we find a perfect synergy between the basic objective of National Food Security Act and Millennium Development Goal. Overall, NFSA impact will enhance the growth of the economy. However, additional pressure on environment and land cannot be ignored. For sustainable food grains production in the economy, the nation should consider the improvement of agriculture productivity as well as to minimize the environmental effect by introducing more sustainable farming practice.

." Food security is said to exist when all people, at all times, have physical, social and economic access to sufficient, safe and nutritious food that meets their dietary needs and food preferences for an active and healthy life (FAO 2009). Specifically, Article 11 of the International Covenant on Economic, Social and Cultural Rights recognises "the fundamental right to freedom from hunger and malnutrition (ibid.)." The most disturbing feature of the Indian economy before last General Election (May 2014) has been the spiraling food grain prices. Ministry of Finance, Government of India along with Reserve Bank of India (RBI) was constantly trying to tame the inflationary pressure through various monetary measures but their success has been very limited. The situation worsened by the incidence of high poverty rate in the country. India is the second most populous country in the world with an estimated 1.2 billion people and the third largest economy by GDP. Thanks to steady economic growth over the past decade, India was classified as a (lower) middle-income country by the World Bank in 2012. An estimated 32.7 % of the Indian population lives on less than US$ 1.25 per day while 68.7 % on less than US$ 2 per day (World Bank 2010). According to a different estimate made by erstwhile Planning Commission (2013a, b, c), Government of India, total 21.92 % population still lied below the poverty line (as delineated by Government of India). The country is home to a quarter of all undernourished people worldwide. India ranks 135th out of 187 countries in the 2014 UNDP Human Development Index and 55th out of 76 countries in the Global Hunger Index (WFP 2015). Any further increase in food grain prices would push the poor people to even more vulnerable situation.
Considering the fact that India has crossed 67 years after Independence, the situation is really a matter of grave concern and requires immediate attention. The Key priorities of the Government of India under the current Five- Year-Plan (2012-2017 are ensuring 'Faster, more Inclusive and Sustainable Growth'. This includes improving the performance of agriculture and diversifying produce as well as reducing vulnerabilities of small and marginal farmers with special focus on women and other disadvantaged groups. It also includes improving targeting, cost efficiency and nutrition effectiveness of the nationwide food-based social safety nets, namely the Targeted Public Distribution System (TPDS 1 ), the Integrated Child Development Service (ICDS), which is targeting mothers and young children and the Mid-Day-Meal Scheme (MDM). The targeted public distribution system (TPDS) and the mid-day meal scheme (approximately 120 million children are signed up) are two large government food distribution schemes in India. The misuse of resources and mismanagement of the programme was widespread and became well known. Problems of misappropriation of these programmes continue and the government is unable to achieve its goals. As a result of the inefficiencies of operations and entrepreneurial inabilities, majority of beneficiaries of the resources invested by the government are not the target population. Towards that end, second UPA government in India had introduced the National Food Security Bill, (also Right to Food Bill) in mid 2013. Subsequently, the National Food Security Bill (NFSB) was passed by both the houses of Parliament. The bill was signed into law on September 12, 2013. The intent of the National Food Security Bill was spelled out clearly in the Lok Sabha Committee Report, which stated, "Food security means availability of sufficient food grains to meet the domestic demand as well as access, at the individual level, to adequate quantities of food at affordable prices." The report added, "The proposed legislation marks a paradigm shift in addressing the problem of food security-from the current welfare approach to a right based approach". NFSB aimed to provide subsidized food grains to approximately two thirds of India's population under Targeted Public Distribution System (TPDS). The legislation was a landmark, and perhaps the largest food security program in the world.
The new bill had categorised the citizens of India into three clear groups based on their income levels (GOI 2013). Group-I comprised of the poorest section of people who earned only subsistence income. Economic condition of this group was just marginal. Under the provisions of the bill, beneficiaries under Group-I were to be able to purchase 5 kg food grains per eligible person per month at 3 (4.6¢ US) per kg for rice; wheat at 2 (3.1¢ US) per kg and coarse grains (millet) at 1 (1.5¢ US) per kg.
The Group-II was economically in better position compared to Group-I, but they also fell under the low income category. Beneficiaries under Group-II were to be able to purchase 3 kg per eligible person per month of food grains at the price which was half of the procurement price.
Group-III consisted of section of people who were financially most affluent. The new bill had kept provisions of subsidised food grains for Group-I and Group-II only (GOI 2013).
Apart from these groups, pregnant women, lactating mothers, and certain categories of children were eligible for daily free meals under this law. The Bill implies that the government would have to spend minimum 1000 billion Rupees 2 (a conservative estimate) to procure food grains from the market and to supply it to the poorer section of the population at highly subsidised prices Sirkar (2013).
In a way, the National Food Security Act (NFSA) was the last attempt by the erstwhile UPA Government before the General Election of 2014 to give some respite to the economically most vulnerable group of the country. The UPA Government was quite confident that this bill would serve several purposes for the benefit of the poor people of the country. First, it would ensure food security for the poorest section of the population and second, it would constrain the increasing food inflation. Thirdly it would partially meet the objectives of Millennium Development Goal (MDG) which has to be fulfilled on or before 2015. This goal envisaged halving the proportion of poor people suffering from hunger during 1990 to 2015. In the context of Indian sub-continent, we find a perfect synergy between the basic objective of National Food Security Act (NFSA) and Millennium Development Goal (MDG).
In case of India, the erstwhile opposition vehemently protested against the bill apprehending further rise in food grain prices. The economic logics against the bill were more or less as follows: Firstly, if the productivity of cultivation of food grain remains same, the fresh demand from government would only escalate the food grain prices through excess demand. Secondly, the poor people would demand more food items from the open market as they would now have more money left with them (because they will get food grains at cheaper prices from the public distribution system). Engel's law' states that as income increases the share of expenditure on food in total household expenditure tends to decrease. On the other hand, marginal propensity to consume on food items is more for the low income people. Similar incidence occurred after introduction of "100 Days Work" at the Panchayat level. Hence NFSA would indirectly induce more demand for food grains. Thirdly, the Public Distribution System (PDS) should be totally revamped to ensure food security. In the light of above arguments many new aspects of NFSA were highlighted and discussed threadbare. Some researchers work on typical PDS offered in different states. Among them Krishnamurty et al. 2014deserved to mention. Krishnamurty et al. (2014 investigate whether food price subsidies affect household nutrition using a dramatic expansion of the availability of subsidized rice in the Indian State of Chhattisgarh in the early 2000's. They found that PDS reforms dramatically increased the availability of PDS food grains in the state relative to border districts. The households in Chhattisgarh increased their calorie consumption from pulses, animal-based protein, and produce (non-grains consumption) as the availability of subsidized rice expanded. This increase is driven by households eligible for rice subsidies, and there is no evidence that ineligible households changed their diet. These results contrast with recent studies suggesting that food subsidies have little effect on nutrition. Mishra (2013) attempted to see the fiscal implications of the bill. Mishra (2013) said that the fiscal implications of the Food Security Act (FSA) were supposed to be significant. The cost of food subsidy because of implementation of FSA was estimated at Rs. 1245.02 billion for the fiscal year 2013-14. The cost was estimated to increase to Rs. Rs. 1577.010 billion in 2015-16. The additional food subsidy over and above the existing Targeted Public Distribution System (TPDS), which was the incremental cost to the budget, was estimated at Rs. 239.510 billion. This amounted to 0.2 % of GDP.
Bhusan (2013) envisaged National Food Security Act (NFSA) as an effective tool in India's fight against malnutrition and food insecurity while Parikh (2013) focused on the impact of NFSA on hunger and malnutrition. Bhushan (2013) was apprehensive about the benefits of NFSA even though the same has been passed by both houses of the Parliament. Even the activists who had fought a long struggle to get this act passed were not satisfied. Skeptics see this act as mere populism and a waste of public money. For the skeptics, much of the debate that preceded the enactment of the NFSA revolved around the issue of cost of the NFSA and its impact on the economy. Shirur and Shivalinge (2014) examined implication of NFSA on Indian agriculture. The Act has potential to bring rich dividends especially in rural areas as access to food for poor means improvement in their productivity, labour efficiency, reduced expenditure on health and reduced migration to cities. However, the success of Act would depend on efficient grievance redressal, tackling corruption and stakeholders' active involvement. There are many others (Rammohan 2013, Kotwal et al. 2013, Swaminathan 2013) who raised either positive or negative side of NFSA.
There is still a shortage of adequate number of studies to measure all impacts of "Food Security Act". Most of the articles dealt with micro assessment of NFSA. None of the article focused on the economy wide impact including environment, land and price of National Food Security Act (NFSA) in a comprehensive manner. The attempt of our study was precisely in that direction.
In this background, the current paper evaluates the economy wide impact of implementing NFSA on the Indian economy using an Input-output (IO) framework. We have suitably aggregated the sectors of 2007-08 Input-output Table into 23 broad categories. The study also assesses the environmental impact of this act (NFSA) focusing on seven environmental indicators. These indicators include both air and water pollutions. Further the additional land requirement that NFSA entails has also been computed under the same framework. Most importantly, the study captures the sectoral price impact using a "Price Model" in Input-output framework. The impact of NFSA on labour and GDP growth of the nation has also been estimated.
The study attempts to measure the impacts of NFSA in terms of two scenarios. We have estimated two different projections of food grains demand by 2016-17. (1) The food grain demand for the nation at Business As Usual 2016-17 3 (Table 1 and Fig. 1) (Scenario 1). (2) The food grain demand including NFSA at 2016-17 named as NFSA Scenario (Scenario 2). As we know that NFSA generates food grain demand of minimum Rs. 1000 billion 4 . We have assumed that the NFSA is implemented in Scenario 1 for the calculation of Scenario 2.
These two scenarios are suitably defined in the framework of our analysis. We have evaluated the implications of each of these situations in terms of demand for food grain and other sectors, sectoral growth, price impact, labour requirements, GDP growth, environmental impacts 5 and land entailments.
Rest of the paper is organised as follows: Section 2 calibrates the methods undertaken for the study. Section 3 gives a brief description of the sources of data used in this paper. This section also incorporates the aggregation scheme used in the paper. The results of our exercises have been discussed in Section 4. A brief conclusion is drawn based on our results in Section 5.

Section 2: methods
The most suitable methodology to capture knock-on effects of output change in an inter-dependant industrial scenario is Leontief model. Both direct and indirect linkage effects could be captured under this model to analyse sectoral impact of output change. However, Leontief model has been able to deal with only demand side implications of production function.
Later Ghosh (1958) introduced a method to capture supply side implications in Leontief framework. The model is able to find the "forward linkage" effect in an inter-dependent industry framework. However, for our analysis, the basic form of system of equations of both the demanddriven and supply-driven models have to be modified to make the gross outputs of 'food grains' as exogenous in our system. The output figures in both Leontief and Ghosh model are treated as endogenous to the system whereas the demand figures are always considered exogenous. To consider food grains demand and supply fixed, we consider output of food grain as exogenous to the system. We develop a modified I-O framework for analysing resource mobilization issues to sustain long-term development goal in an economy. The system of equations has been modified accordingly to incorporate exogenous output figure of food grains. We are able to estimate the price impact due the implementation of NFSA using Ghosh model. Our study would primarily remain focused on measuring impact on rest of the economy so that the target (benchmark) production of food grain as per scenarios could be achieved. The detailed structure of the methodology is given below.

Demand-driven input-output model (Leontief model)
We would use the basic form of a demand-driven Leontief model with 23 commodities. Here the production function could be represented using matrix notations as: From equation (1), we can write: From equation (2), for a change in f 1 (which increases by Rs.100 billion after the implementation of National Food Security Bill), we calculate the corresponding production values in rest 22 sectors. The required growth rates are also calculated.
In the above calculation, x i is endogenous variable, whereas f i is treated as exogenous variable. This is the modification part of our analysis. Now we apply NFSA targets for food grain sector. Here we take values of x 1 as fixed. The modified Leontief system of equation (Miller and Blair 2009) becomes: Where, A^is the (I -A) matrix with 1st column as all zero and a 1,1 is equal to −1. x^is the output vector with 1st row as endogenous f 1 . Next A* is the unit matrix with 1st column as a j,1 (for j is equal to 1 to 23) and 1st row is-(1a 1,1 ). Lastly, f^is the final demand vector whose elements are all exogenous f i (for i is equal to 1 to 23) and 1st row is equal to exogenously fixed x 1 Finally, equation (3) can be re-written as given in equation (4): Supply-driven input output model (Ghosh model) The basic form of a supply based Input-output model 7 (with 23 industries) is represented below in equation 5. x Where, x is total output vector [ In this case, x i is endogenous variable, whereas v j is exogenous variable Now we impose NFSA targets for food grain sector. Here also we take values of x 1 fixed.
The modified Ghosh Model can be written in equation (6) B^x^¼ B Ã v^ð6Þ Where, B^is the (I -B T ) matrix with 1st column as all zero and b 1,1 is equal to minus 1. x^is the output vector with 1st row as endogenous v 1 . Next B* is the unit matrix with 1st column as b 1,j (j is equal to 1 to 23) and 1st row is-(1b 1,1 ). Lastly, v^is the final value added vector whose elements are all exogenous v j (j is equal to 1 to 23) and 1st row is equal to exogenously fixed x j And the solution of the system is given in equation (7): The above equation is solved for rest 22 sectors, considering output of food grain (x 1 ) as exogenous. The output of food grain is fixed considering new demand from government sector into calculation.

The price model
When all inputs are taken into consideration in the processing and payments sectors, then the j-th column sum (total outlays) is equal to the j-th row sum (total output) (Miller and Blair 2009). Thus summing down the j-th column, we get: Pre-multiplying by x^− 1 we get: Here Z is the input co-efficient matrix, X T is the transpose of output vector X, V T is transpose of value added matrix V, V T c is the product of V T and X^− 1 .
The Right Hand Side of equation (9) represents cost of inputs per unit of output. Output prices are set equal to cost of production, so each price is equal to 1 (i.e. Left Hand Side).
If we denote the base year index prices by p^j = (p^1, p^2 , ………………, p^n) the inputoutput price model is: Transforming in terms of row vectors we have Impact on environment Total amount of pollution can be calculated as a function of output of industries. Then output of industries can be presented with interdependencies of industries and final demand. The pollution model is then prepared according to Leontief model as follows Recollecting equation (2) we can structure the pollution equation as Where L = (I-A) −1 Here TP is a scalar giving the total quantity of pollution. And 'i' represents CO2, CH4, N2O, BOD, COD, SS and DS generation from the industrial activity.
E is a vector of dimension (1xn) of coefficients for the industrial pollution intensity 8 per unit of output. X is a vector (nx1) of industrial output; Y is a (nx1) vector of final demand of industries; A is a (nxn) matrix of input-output coefficients describing interdependencies among input and output of industries; L is a Leontief matrix (nxn) giving industrial output per unit of final demand, inverse matrix of industrial output: L= (I-A) −1 . EL is a vector of (1xn) provides the total intensity of each type of pollutants.

Labour requirement
Using the concept of Leontief (1951) we have used factors of production-labour.
Let (I -A) −1 be (n x n) direct plus indirect intermediate input requirement matrix or Leontief Inverse, where n is the number of commodities. Also, let F be the matrix consisting of vector L which denote direct requirement of labour per unit of output.
Post multiplying the direct and indirect requirement matrix (I -A) −1 , to the F matrix yields matrix B below, Where each row of the matrix B gives direct plus indirect requirement of a factor (labour) per unit of each commodity's output.

Section 3: data source
Our primary source of data is the Input Output Transaction Table of 2007-08 published by Central Statistical Organization (CSO 2012), Government of India. This is a 130X130 commodity matrix used for Input Output Analysis.
To measure environmental implications of NFSA (i.e. GHG emission), we have considered the version 8 databases of GTAP (Global Trade Analysis Project) the reference year 2007. A standard GTAP framework provides estimates of the GHG emissions of different sectors. We have further computed the direct and total (direct and indirect) intensities of GHG emissions (CO2, CH4 and N2O).
The water pollution data (BOD, COD, SS and DS) has been taken from Chakraborty and Mukhopadhyay (2014) for the year 2007. This dataset has been used to prepare the direct and total intensities of individual water parameters.
Other important implications of NFSA include requirement of cultivable land to augment food grain production. The land data according to different agricultural sector has also been collected from GTAP databases (2001). We have also calculated the additional generation of labour requirement and GDP growth rate as a result of imposing National Food Security Act. We have calculated GDP coefficients from the Input Output Table of 2007-08. We have assumed that same GDP coefficients would prevail in 2016-17.
The sectoral employment/labour data for India have been compiled from Employment and Unemployment Surveys (EUS) of the National Sample Survey Organization (NSSO). The EUS 64th round, 2007-2008(NSSO, 2012 have been used for compiling employment data for the year 2007-08. The labour coefficients have been calculated using the labour data from NSSO and total output data from the Input Output Table  of 2007-08.

Aggregation scheme
We have suitably aggregated all the sectors of 2007-08 Input-output Transaction Table  (at Factor Cost) for the purpose of our analysis. The 130X130 output matrix has been aggregated to 23X23 matrix. The detail description of each of these 23 sectors has been slated in Appendix. According to our aggregation scheme, sector 1 is the food grain sector.

Section 4: results and discussions
We present the results according to two scenarios as developed in Section 1. The food grains demand in 2007-8 was 230.78 million tonnes whose market value was INR. On the other hand, Scenario 2 evaluates the impact of NFSA if implemented in Scenario 1. In this scenario we have added food grain demand of Rs. 1000 billion (as envisaged by NFSA) to Scenario 1 to arrive at Scenario 2. Taking production of food grains as exogenously fixed (and equal to INR. 4847625 million), we have calculated the demand for the remaining 22 sectors and also the price impact in the economy.
We have applied both Leontief and Ghosh model to estimate backward and forward linkage effects in an inter-dependent industry structure. .
The results pertaining to resulting outputs are presented in Table 2. Similarly corresponding growth in outputs are presented in Table 3. The growth figures indicate sectors that are particularly important to achieve production targets. In other words, increase in food grain production (due to increased demand) must be supported by adequate growth in some related sectors in the economy. These sectors have been enlisted in Table 4. Sectors such as Chemicals & chemical products, mineral fuels, livestock products and other oilseed & crops are most important from demand perspective for these scenarios. The key sectors identified from supply side are other oilseeds & crops, food products and livestock products. Hence we can clearly sort out that other oilseeds & crops and live stock products are the most important from all perspective. These two sectors growth is essential to increase in food grain productions.

5) Petroleum & Coal Tar Products 5) Chemicals & Chemical Products
Since other oilseeds & crop is the primary source of edible oils, it is required in almost all processed food items and wide range of culinary. For this reason with the growth in food grains, the supply of other oilseeds and crops needs to grow substantially. As other oil seeds and crops are becoming costlier, the tendency towards crop diversification intensifies. Farmers tend to replace pulses and cereal production with more of oil seed production. The minimum support price of food grains should be sufficiently high to restrain this. Otherwise, food grain production would decrease and the food security of the country would be jeopardised.
Importance of live stock products indicates that the rise in food grain consumption must be accompanied by consumption of live stock products like meat, egg etc. Then only a balanced diet for the consumers could be ensured. Food grain is the largest source of carbohydrates. Hence any increase in food grains must be complemented with adequate protein intake. Live stock products ensure that protein intake.
The result of GDP and labour impact due to NFSA is presented in Table 5. The additional labour requirement due to NFSA 2016-17 is likely to be 48114.3 million (6.21 %) compared to BAU 2016-17. The direct major labour generation is expected from food grains sector (44203.77 million). The indirect additional labour requirement (3910.591 million) can also be estimated from this exercise. Apart from food grains sector, the other key sectors contribution in labour generation are oilseed, livestock, mineral fuels, chemical and chemical products, petroleum products, transport equipment and other services (Table 6).

Impact on prices
According to the BAU scenario, India would demand 277.37 million tonnes of food grains in 2016-2017. We presume that introduction of NFSA would not have any effect on the intrinsic agricultural productivity of the country. Rather, it would only artificially scale up the price level. For simplicity we assume that increase in value of food grains occurs solely due to food inflation.
The food grains demand was 230.78 million tonnes in 2007-08 and its market value was Rs. 4033366.6 million. The value of projected food grain demand in 2016-17 (i.e 277.37 million tonnes) would be Rs. 4847625 million (2007-08 prices), as a result the increase in food grain demand value in 2016-17 would be of Rs. 814258.4 million.
We applied the Leontief price model, to find the increase in price level due to additional demand in food grain prices. The results give us inflation level of each commodity under NFSA (scenario 2). Impact on prices due to imposition of NFSA shows that the food grain inflation is expected to be high. The percentage increase in price change is presented in Table 7. Increases In India, many people are involved in out-of-the-farm activities and produce small machineries, equipments and chemicals, etc. According to the Government of India, Micro,  Small and Medium Enterprises (MSME) contribute nearly eight per cent of the country's GDP, 45 % of the manufacturing output and 40 % of the exports. They provide the largest share of employment after agriculture. They are the nurseries for entrepreneurship and innovation. They are widely dispersed across the country and produce a diverse range of products and services to meet the needs of the local markets, global market, and national and international value chains. 9 As food grain prices increase, the employees ask for dearness allowances and thus the unit cost of production rises. As a result, the price of machineries and equipments produced mostly by MSME sector also rises (Chhibber 2013). The current exercise presents the likely impact of recent NFSA on the Indian economy. Previous literatures have already assessed targeted PDS initiated by the government at State level as well as national level. Most of them have outlined a negative feedback. Many studies suggest that the Minimum Support Price (MSP) of the government provides mostly income support to farmers rather than to stabilize food prices (Rakshit 2003). Kaushal and Muchomba (2013) found evidence that the decline in the price of wheat and rice, changed consumption patterns toward increased consumption of wheat and rice and lower consumption of coarse grains, the unsubsidized staple food. It suggests that food price subsidies are likely to affect agriculture markets without impacting nutrition.
The NFSA aims to expand and improve the distribution of food grains through the PDS. Despite this large, projected increase in expenditure on food aid, previous research provides no evidence that expanding the PDS in its current form will improve calorie consumption or diet quality in India (Kaushal andMuchomba 2013, Tarozzi 2005). The NFSA has also been criticized for focusing on grains instead of pulses and other foods that would help diversify a diet that is overly reliant on grains. However, Krishnamurthy et al. 2014 suggest that the proposed expansion of the PDS under the NFSA could help to reduce persistent malnourishment and food insecurity in the country because of an improvement in non grains consumption.
Bhushan (2013) and Shirur and Gowda (2014) even though depict the benefits of NFSA, however, concerned about the burden of cost, corruption and stakeholders involvement.
The effects of government procurement on agricultural markets are likely to be magnified, given the potential increase in the procurement under the NFSA. A number of policy makers are therefore concerned about the NFSB's implications for agricultural markets. The chairman of India's Commission for Agricultural Costs and Prices says that "more spending on welfare programs-especially when that spending relies on a flawed system-is reckless in an economy burdened by a weakened currency and a large fiscal deficit". "The economic inefficiencies and the losses incurred in the system will outweigh the welfare gains" (Gulati et al. 2012).

Impact on the environment
The increase in food grain production 10 has wide spread repercussions. In this paper we have identified environment and land usage impact of imposing NFSA.
Any increase in production activities usually leaves strong impact on environment in terms of generation of pollutants (both air and water). Any productive activity must conform to the environmental norms of the country. Otherwise the activity, though productive, may not be considered as sustainable. For successful implementation of any expansionary policy, the economic impacts must be productive as well as sustainable. Success of NFSA hinges on that too.
Following standard procedures explained in modeling section, we have calculated the BAU and NFSA scenarios 11 impact on the environment at 2016-17. The impact on air pollution is cited in Table 8. We found that the amount of air pollution in million metric tonne CO2 equivalent has been maximum for N2O followed by CH4. Results of two scenarios indicate that N2O is the most prevalent form of air pollutant. As a result of imposition of NFSA, the N2O emission is likely to increase on average by 7.85 %. This is substantial in any standard. The other indicators of GHG emissions such as CO2 and CH4 are also likely to add around 1 % due to NFSA relative to BAU.
The level of water pollution due to imposition of NFSA have been presented in Table 9. Water pollution in thousand tonnes reveals that maximum amount of pollutant generated is BOD followed by COD. An additional 13.6 % of BOD and 11.5 % of COD are expected to generate due to NFSA scenario.
Similar calculation for the changes in requirement of cultivable land due to imposition of Food Security Act is presented in Table 10. Our computation shows that the additional land requirement due to imposition of NFSA is substantial (35005.4 ha).
Overall, we found that the impact on environment of National Food Security Act is not favourable. Our result shows that the economy is likely to generate additional GHG emissions of 10.38 million metric tonne of CO2 equivalent (including CO2, CH4 and N2O) due to this act. A significant generation of water pollution (including BOD, COD, Suspended Solids and Dissolved Solids) is also expected. The overall land requirement on account of NFSA has been found to be significant. Hence, availability of land could also be a serious impediment to the implementation of Food Security bill.

Section 5: conclusion
Development of a systematic framework to manage global food security has become a priority for the global community. India faces the challenge and pressure to feed over 1.25 billion people. Despite economic growth and self-sufficiency in food grains production, high levels of poverty, food insecurity and malnutrition persist in India (WFP 2015). The National Food Security Act (NFSA) passed in 2013 is a milestone in the history of India's fight against hunger and malnutrition, as it claims to feed more than 800 million Indians 12 with highly subsidised staple foods (WFP 2015). In this backdrop, the current paper evaluates the economy wide impact of NFSA on the Indian economy. It estimates the labour requirement, GDP growth, and indirect impact on the other sector of the economy. The paper also measures the impact as a result of NFSA on prices of different sectors of the economy. The Impact on environment including air and water pollution as well as land requirement has also been calculated. Results from all the scenarios show that the other sectors which need to gear up significantly to supplement targeted growth in food grain sector are Chemicals and chemical products, Mineral fuels, Livestock products and other oil seeds and crops. The additional labour and GDP growth due to NFSA is expected at 6.21 % and 1.51 % respectively compared to 2016-17.
From this exercise, we observe that to implement NFSA, the production structure of agricultural sector has to be revised thoroughly. What is needed would be increase in productivity rather than increase in acreage area. Given the same area of cultivable land, productivity has to improve substantially. For this to happen, use of fertilizers, pesticides, intense irrigation and modern agricultural equipments would be required.
The entire system has to upgrade significantly.
However, there is a bigger threat of increasing productivity using fertilizers and pesticides. The problem of ecological hazard may creep in which could foil the entire production process. Because of this reason, the concepts of integrated nutrient management and integrated pest management have gained popularity. In this regard, we have calculated the environmental impact of National Food Security Bill using Input-output framework. Our results show that the environmental impact (air and water pollution) of food security bill is not favourable. The direct and indirect pollution intensities are sizeable which can cause serious damage to our ecosystem. The economy is likely to generate additional GHG emissions of 10.39 million metric tonne of CO2 equivalent due to this act. A significant generation of BOD and COD is also expected. The total land requirement as a result of food security bill has also been calculated to be huge.
Availability of land could be a serious impediment to the implementation of Food Security bill.
To make the NFSA more sustainable, changes in farming practices can offer big opportunities toward reduction in GHG emission. On the supply side, crop management practices-such as improved fertilizer management and conservation tillage-offer the greatest reduction potential at relatively low costs. Better managing grazing lands-such as by rotational grazing and altering forage composition-and restoring degraded lands and cultivated organic soils into productivity are also important (WRI 2014).
The analysis still leaves a number of questions unanswered. Another important constraint of food security in India is the availability of fresh water for cultivation. The increase in production of food grains would also entail significant  (Brahmanand et al, 2013). Hence increase in production of food grains would entail significant requirement of fresh water, which may not be available in future.
In India, other threats to food security include crop diversification, replacement of food grain production by bio-fuel and medicinal plants, adverse climate change, acquisition of cultivable land for establishing industrial Special Economic Zones (SEZ) etc.
Since in India, most of the farm sizes are small and fragmented, the productivity might have reached a saturation point where no significant improvement in productivity is possible. In this case, the only option left is to supplement "National Food Security Act" by import food grains. But that would result in huge burden on country's exchequer. Food Security Act nowhere hinted about that. There could also be a reallocation of farm land from non food grain to food grain sector. But that may have negative repercussion on availability of non-food grains and cash crops like tea, jute, rubber etc. This would again have a negative impact on country's exchequer, as most of the non-food items are exported. Replacing cultivation of cash crops by food grains is not always feasible. 13 It depends a lot on the texture of soil, its fertility and local climate. There would be always a tendency of increase in food grain prices. This inherent tendency could surmount any attempt to control it by Government or any other agency. The inflationary pressure would not be confined within the periphery of agricultural sector rather it would spill over to other sectors which seemingly do not have any relation to food grain production, for example "Precision Tools".
There are also some fears being propagated that this bill can actually harm the economy. One is in relation to the amount of food grains required and its impact on farmers, production and procurement. The second fear is that it will all be "money down the drain" because of the high leakages/diversion and wastage in the PDS. The extent of leakages in the PDS certainly is a cause for concern (Sinha 2013). According to Montek Singh Ahluwalia, former Deputy-Chairman of the Planning Commission of India, only 16 % of the resources allocated towards India's food subsidized distribution scheme reach the poor (Economist 2010). Hence without re-vamping of PDS system, introduction of NFSA could be a complete disaster.
The current study also throws some insight on the achievements of The Millennium Development Goals (MDG) which conclude in 2015 in the context of NFSA. It has been found that in India, absolute poverty has declined to some extent but income inequality became alarming making other targets of MDG less accessible. While per capita income in India has more than tripled in the last two decades, the minimum dietary intake reduced during the same period. The bottom 10 % of the population account for only 3.6 % of the total consumption expenditure and the top 10 % accounts for 31 %; the gap between the rich and the poor has increased during the high economic growth phase (WFP 2015). The success of NFSA would also be highly constrained if socio-economic factors like income inequality do not improve substantially over time.
From this exercise we could manage to contribute to the food security literature by focusing on economic and environmental impact due to the implementation of NFSA. There are several other impacts which need to be highlighted in the context of food security act. A mixed outcome is expected from the Food Security Bill. The bill lacks proper and effective enforcement machinery. The feasibility of the bill has to be tested on the ground. However, the bill should have the capability to yield good results in near future.
Endnotes 1 Public Distribution System (PDS) is said to have existed from before independence in India, and was initially intended to protect consumers from food shortages and producers from price fluctuations (Tarozzi 2002). It was originally started at a few urban centres, but was extended in the 1980s as a measure for food security and poverty alleviation (Kattumuri 2011). Central and state governments jointly manage PDS with the centre being responsible for procurement, storage, transportation and allocation. The states are responsible for the distribution through fair price shops; as well as for identification of families below poverty line (BPL), issuing cards, supervision and monitoring.
2 "Ektu Beshi Bhat Chaileo Paben Na"; Abhirup Sirkar,; Ananda Bazar Patrika.There are various estimates regarding the NFSB. The current study considers a most conservative estimate. According to the Ministry of Agriculture, the food subsidy alone will cost the Exchequer about Rs 950 billion to start with. The Bill may touch an expenditure of anywhere between Rs 1250 to 1500 billion, if the Bill adds up the associated set up expenditure of the existing Public Distribution System. To ensure ample grain supplies on sustainable basis under the NFSB, an expenditure of Rs 1106 billion would be needed over a five year period (Gulati et al. 2012). 3 End of the Twelfth plan period, GOI-2012-17 4 1000 billion rupees =USD 63090 billion(1USD=63.09INR) 5 The global food system, from fertilizer manufacture to food storage and packaging, is responsible for up to one-third of all greenhouse-gas emissions, according to the Consultative Group on International Agricultural Research (CGIAR). Emissions generated during the application of synthetic fertilizers accounted for 13 % of agricultural emissions in 2011, and are the fastest growing emissions source in agriculture, having increased some 37 % since 2001. Greenhouse gases resulting from biological processes in rice paddies that generate methane make up 10 % of total agricultural emissions, while the burning of savannahs accounts for 5 % (FAO 2014). 6 We consider that the outputs in 23 sectors are x 1, x 2 , ……., x 23 where x 1 is the output in food grains sector. The corresponding final demands are f 1 , f 2 , …….., f 23 . 7 This model assumes Constant Allocation Coefficients. 8 In this exercise we have 7 types of pollutants (CO2, CH4, N2O, BOD, COD, SS and DS). 9 Ministry of Micro, Small and Medium Enterprises, Government of India. 10 to commensurate equivalent food grain demand 11 The increase in pollution at BAU 2016-17 is measured in scenario 1. Scenario 2 is based on NFSA impact at 2016-17 (i.e food grain demand of additional one thousand billion is taken into consideration) 12 75 % of the rural and 50 % of the urban population living below and just above the national poverty line (GOI 2013) 13 For example we cannot grow wheat on tea gardens.