Nutrient uptake of corn grown using moldboard plow or no‐tillage soil management1
作者:
R. L. Blevins,
J. H. Grove,
B. K. Kitur,
期刊:
Communications in Soil Science and Plant Analysis
(Taylor Available online 1986)
卷期:
Volume 17,
issue 4
页码: 401-417
ISSN:0010-3624
年代: 1986
DOI:10.1080/00103628609367722
出版商: Taylor & Francis Group
关键词: Zea mays L.;corn nutrition;nitrogen;phosphorus;potassium;calcium;magnesium;conservation tillage;nutrient stratification
数据来源: Taylor
摘要:
Crop nutrition under different tillage systems continues to be an issue. Corn (Zea maysL.) growth and nutrient (N, P, K, Ca, Mg) uptake were monitored for two years under either no‐tillage or conventional (moldboard plow plus disc) tillage management. Two rates of applied N (84, 168 kg N ha‐1) were imposed as well. The crop was planted in mid‐May, and sampled about 60 days after planting and at crop maturity. Grain yields were generally increased by the higher N application rate and by tillage reduction. Phosphorus, calcium, and magnesium uptake were generally unaffected by treatment. Total nitrogen recovery by the crop was lowered by no‐tillage soil management at the 84 kg N ha‐1application rate, but was equal across tillage treatments at the 168 kg N ha‐1rate. Potassium acquisition by the crop was strongly related to the surface stratification of K in the no‐till soil environment.
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