Figure 4

Distinct cluster of farms delineated by PCA axis and labeled by size category of farms. A. Principal component analysis observations plot diagram of farming systems based on PCA of variables after varimax rotation. The numbers 1-3 on the plane indicate the different farm sizes – Marginal-Small - 1, Medium – 2, and Large - 3. The distance between the positions of the farms approximates the dissimilarity of their variables measured by Euclidean distance. Four circles/ovals represent four farm types. B. Ordination bi-plot diagram of farming system characterization based on PCA of variables. The numbers 1-3 on the plane indicate the different farm sizes – Marginal-Small - 1, Medium – 2, and Large - 3. Red dots represent variables used in PCA. The distance between the positions of the farms approximates the dissimilarity of their variables measured by Euclidean distance. Samples close to the origin have average values of a particular variable in a study sample.