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Composition Of Plant Not A Guide

Categories: MIXTURES FOR CROPS

It has been pointed out that a

chemical analysis of a soil is not a dependable guide in the selection

of a fertilizer. Years ago the theory was advanced that the analysis of

the crops desired should be a guide, but it has proved nearly

worthless. This theory does not take into account the soil's supply of

plant-food. Moreover, a certain crop may demand a large supply of an

element at a time of the year when the soil's supply is inactive. The

need of nitrogen for grass in the early spring, before nitrification in

the soil is active, is an illustration. Let the causes be what they

may, the fertilizer formulas that call for plant-food in a fertilizer

in the same proportions that it is found in plants are disappointing in

their results. The analysis of the plant is not a dependable index.



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