Effect of fertilization and irrigation upon NPK composition of corn leaves, on corn yields, and available k in soil
作者:
J. A. Lutz,
G. D. Jones,
期刊:
Communications in Soil Science and Plant Analysis
(Taylor Available online 1970)
卷期:
Volume 1,
issue 4
页码: 197-204
ISSN:0010-3624
年代: 1970
DOI:10.1080/00103627009366258
出版商: Taylor & Francis Group
关键词: Congaree loam;soil K
数据来源: Taylor
摘要:
Corn(Zea maysL.) was grown for three consecutive years on Congaree loam to measure the effects of rates of N, P, and K fertilization and irrigation on the nutrient concentration of leaves, the level of available K in the soil, and on the yield of corn. Plant nutrients consisting of 0, 56, 140, 224, and 280 kg N/ha; 0, 15, 37.5, 60, and 75 kg P/ha, and 0, 28, 70, 112, and 140 kg K/ha were applied in a central composite rotatable design in each of the three years. All plant residue was removed each year when the corn was harvested, and the plots remained fallow during the winter months. One half of the experiment was irrigated when there was a 50% depletion of available soil moisture in the 0‐ to 46‐cm soil depth.
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