Scientific Considerations for Allocating Funds to Various Fertilizer Nutrients.

In unfavorable economic conditions, many farmers must make difficult decisions about how to allocate their limited funds across fertilizer nutrients. Making such allocations requires some knowledge about how two or more nutrient interact to affect yield. This paper uses a two nutrient interaction as an example to demonstrate techniques for 1) finding economically optimum combinations of two nutrients and 2) determining the optimum combination of nutrients under restricted fertilizer expenditures.