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Effect of Plant Population and Rates of Fertilizer Nitrogen on Average Weight of Ears and Yield of Corn in the South 1
Author(s) -
Thomas Winfred
Publication year - 1956
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/agronj1956.00021962004800050009x
Subject(s) - bushel , loam , agronomy , acre , yield (engineering) , nitrogen , fertilizer , population , nitrogen fertilizer , biology , zoology , chemistry , ecology , soil water , medicine , materials science , environmental health , organic chemistry , metallurgy
Synopsis On Dewey silt loam (pH 6.8, high in available P and exchangeable K) average ear weight of corn decreased from 7.6 ounces at plant population of 6,000 to 6.4 and 4.8 for populations of 12,000 and 18,000 respectively. N fertilizer significantly increased corn yield, but with little or no increase above 40 pounds per acre with any plant population. The 12,000‐populations showed overall increases, including no nitrogen treatment, of 10.3 and 13.8 bushels per acre over the 18,000 and 6,000 plant populations.