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Effect of Controlled Air and Soil Temperature and Starter Fertilizer on Growth and Nutrient Composition of Corn (Zea mays L.)
Author(s) -
Ketcheson J. W.
Publication year - 1968
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/sssaj1968.03615995003200040032x
Subject(s) - fertilizer , yield (engineering) , starter , zea mays , agronomy , air temperature , nutrient , factorial experiment , chemistry , maturity (psychological) , mathematics , biology , materials science , food science , geology , psychology , developmental psychology , statistics , organic chemistry , climatology , metallurgy
Grain corn ( Zea mays L.) yielded higher when grown to maturity under a 22‐12C controlled air‐21C controlled soil temperature combination than when grown under other factorial combinations with 26‐16C air and 17C soil. Lowering air temperatures lengthened the time, whereas increasing soil temperature shortened the time to reach maturity, indicating that growth rates stimulated by air temperature can reduce yields, but growth rates stimulated by soil temperature can increase yields. Starter fertilizer effects on yield were greatest with the temperature conditions giving lowest yield (higher air temperature‐lower soil temperature). Yields correlated negatively with tissue NPK concentration at maturity. Variations in leaf area corresponded to variations in yield.