THE CURRENT MINERAL NUTRIENT CONTENT OF THE PLANT SOLUTION AS AN INDEX OF METABOLIC LIMITING CONDITIONS

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Abstract
The current amounts of nitrate-N, phosphate-P, and K in the solutions of various plants are correlated with arrested metabolism induced by the following limiting conditions: decreased supply of available Mn in a neutral soil, resulting in a marked chlorosis in beets and spinach; limiting amounts of P2O6 and N as supplied to the soil in fertilizers; and unfavorable weather and cultural conditions. Material increases in the quantities of the various fertilizer elements accompanied arrested metabolism. The plants studied were turnips, corn, cabbage, carrots, spinach and beets.