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Yield of Corn on Frederick Silt Loam as Affected by Slope and Fertility Treatments 1
Author(s) -
Lutz J. A.,
Hawkins G. W.,
Hoepner P. H.,
Martens D. C.,
Porter H. C.
Publication year - 1969
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/agronj1969.00021962006100060036x
Subject(s) - loam , silage , agronomy , grain yield , silt , mathematics , zea mays , zoology , soil water , environmental science , biology , soil science , paleontology
Abstract Experiments were conducted on a B slope (2.5‐7.5%) and on a C slope (7.5‐15%) in 1963, 1964, and 1965, to measure the response of corn { Zea mays L.) on Frederick silt loam to five levels of N applied with three rates of K. Both grain and silage yields were measured. Combined data for the 3 years showed a grain and silage response to only 67 kg N/ha on the B slope, but 134 kg N/ha was required to attain maximum yields on the C slope. Silage yields were increased by 70 and 140 kg K/ha on the B and C slopes, respectively. Grain yields did not respond to applied K on the B slope, but there was a response to 70 kg K/ha on the C slope. Both grain and silage yields on both slopes were similar the 1st year but higher on the B slope in the other 2 years.