A METHOD OF APPLICATION DESIGNED TO INSURE PROPER DISTRIBUTION OF FERTILIZERS IN FIELD TRIALS WITH FRUIT TREES

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Abstract
In certain soils in the Sacramento Valley where prune trees show leaf scorch due to potash deficiency, potash applications failed to affect potash content below 15 in., while most of the roots were below this depth. A device for injecting potash to lower depths, for experimental purposes, is described.

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