objective of this study is to employ a Just-Pope production function to examine the relationship between fertilizer inputs, soil … fertilizer, temporal diversity, and PBR wheat cultivars are associated with increased yield variance. Mean wheat yield is reduced … contrast, higher soil quality and PBR wheat cultivars increase mean yield. The wheat yield increases attributed to PBR range …

/FAO-SFI studies on fertilizer profitability in Rwanda; and to incorporate information and comments obtained from participants in the … December 15, 1999, MINAGRI Fertilizer Profitability Workshop conducted to present and validate the preliminary findings of the …

Fertilizer price volatility has increased dramatically. This research examines cash purchase and warehouse strategies …. Seventeen years of Oklahoma fertilizer prices are examined. The results indicate that mechanical cash purchase strategies can be … used to reduce the average cost or variance for fertilizer. Optimal purchase dates are also identified. …

This paper estimates an equation for fertilizer demand in Brazil, considering time period from 1970 to 2002. Co … econometrics results. Fertilizer demand is inelastic to both price fluctuations and rural credit supplied. These results are … compatible with the international estimates and they also confirm the importance of fertilizer as an input for the Brazilian …

-called GMOs (Genetically Modified Organisms), agricultural scientists have shown that crop yields and nutritional quality can be …

in explaining variation in crop yields on smallholding plots. Fertilizer, improved seeds, protection against erosion and … pesticides improve crop yields in Rwanda and Ethiopia, but not Uganda, possibly associated with lack of use there. With all … protection against erosion). The adverse effect of crop damage on yields varies between 12/13 percent (Rwanda, Uganda) to 36 …

-called GMOs (Genetically Modified Organisms), agricultural scientists have shown that crop yields and nutritional quality can be …