Response of Corn to Small Amounts of Fertilizer Placed with the Seed: IV. Comparison of Dry and Liquid Forms
1971
Baweja, A. S. | Bates, T. E.
Powdered and granular fertilizers containing 13.3, 23.1, and 11.0% N, P, and K, respectively, were prepared along with water solutions of the same material containing 10.5 and 4.4% P. These fertilizers were banded with the seed of corn (Zea mays L.) in greenhouse trials in which respiration rate, axis length, emergence, dry matter yield, and N, P, and K content were measured. No differences in nutrient availability were found between liquid and dry fertilizers studied. Granular and powdered materials were equal in toxicity. They were more toxic to corn seedlings, as measured by axis length, emergence, or dry matter yields, than the less concentrated liquid materials applied at rates providing the same total quantities of plant nutrients. Use of dilute (low-analysis) fertilizers is probably not a practical way of reducing toxicity because of the amount of dilution required.
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