Ginger and upland rice remained socially unprofitable crops and should be discouraged as a crop in the highlands, unless their productivity or prices improve. The examination of PAM ratios found that in all cases, there was a net negative transfer on these crops meaning that the government or ...
GlobWat estimates Eact by multiplying Eref by a crop or land use factor, which is assumed to be equal to the maximum evaporation of a land use or vegetation type [16]. We analyzed the Eact results for the Urmia Lake Basin, which were calculated by GlobWat for each basin around the wor...
N partial factor productivity is regarded as one of the most significant indicators for cereal crops, which directly reflects the economic return of N input into the crop production system [62]. Gu et al. [63] found that continuous ridges with film mulching cultivation increased the PFP of ...