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Response of Corn to Small Amounts of Fertilizer Placed with the Seed: III. Relation to P and K Placement and Tillage 1
Author(s) -
Bates T. E.
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/agronj1971.00021962006300030007x
Subject(s) - fertilizer , tillage , agronomy , yield (engineering) , grain yield , zea mays , field experiment , field trial , nitrogen , mathematics , chemistry , zoology , biology , materials science , organic chemistry , metallurgy
Fertilizer was banded with the seed of corn ( Zea mays L.) in a number of field trials at rates supplying 3.1, 5.4, and 2.5 g N, P, and K per meter of row, respectively. Fertilizer with the seed was applied in combination with separate and larger applications of N, P, and K at various placements and with different amounts of preseeding tillage. Nitrogen placement did not appear to be critical in these trials. When no fertilizer was applied with the seed, grain field was slightly greater where P was side banded than where it was disked or plowed down. When accompanied by fertilizer with the seed, P was as effective where it was plowed down as it was where it was side banded; but P disked in was not. Lower yields were obtained with disked K than with plowed down or side banded K. Fertilizer with the seed reduced the difference between K placements at early growth stages in one trial, but this interaction was not apparent in other trials or in grain yield. Fertilizer with the seed reduced the yield response to preplanting tillage in one trial out of five.