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N, P, and K Percentages in Soybean ( Glycine max (L.) Merrill) Plant Parts 1
Author(s) -
Hanway J. J.,
Weber C. R.
Publication year - 1971
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1971.00021962006300020027x
Subject(s) - fertilizer , nutrient , agronomy , growing season , nitrogen , biology , glycine , horticulture , chemistry , amino acid , biochemistry , ecology , organic chemistry
Field experiments were conducted with N fertilizer applications for nodulating and non‐nodulating soybean isolines, with P and K fertilizer applications for the nodulating isolines, and with 8 varieties. Percentages of N, P, and K in the plant parts at successive stages of plant development were determined. Composition of plant parts from different varieties usually were similar. N, P, and K concentrations in each plant part, except the seeds, usually decreased as the season progressed. Fertilizer applications resulted in increased concentrations of the fertilizer nutrient applied in all plant parts. N deficiency resulted in late‐season increased P concentrations, especially in leaves, petioles and seeds. Nutrient translocation to the developing seeds resulted in severe nutrient depletion in other plant parts irrespective of fertilizer applications.