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Yields and Nitrogen Content of Corn Hybrids as Affected by Nitrogen Supply
Author(s) -
Viets Frank G.,
Domingo Clifford E.
Publication year - 1949
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1949.036159950013000c0055x
Subject(s) - nitrogen , citation , hybrid , agricultural science , mathematics , library science , computer science , agronomy , chemistry , environmental science , biology , organic chemistry
. high and showed no signs of nutrient deficiency. Fertilizer was side-placed 3 to 4 inches deep and 11 inches to each side of each row. The plots received six irrigations totaling 1.67 acre feet per acre, a preplanting irrigation of 0.32 acre feet per acre, and a rain of 1.44 inches on September 1. All ears over 3 inches in length were shucked from each 45 foot length of row, weighed, and the ears of the six replicates composited for determination of shelling percentage. Moisture and total nitrogen were determined on the shelled corn. 1947.—Eighteen hybrids ranging in maturity from very early Wisconsin 416 to members of the late U. S. 99 class were grown at three levels of nitrogen supply in three replications. The hybrids were randomized within each fertility level. Each hybrid occupied a single row 45 feet long with 30 inches between rows. The thinned stand was 17,400 plants per acre. The three nitrogen levels were established as follows: