Potassium release characteristics and mineralogical characteristics of some delaware soils1/
作者:
WilliamC. Liebhardt,
Nenad Spoljaric,
Wei‐Wei Hsu,
Leo Cotnoir,
期刊:
Communications in Soil Science and Plant Analysis
(Taylor Available online 1979)
卷期:
Volume 10,
issue 7
页码: 1025-1036
ISSN:0010-3624
年代: 1979
DOI:10.1080/00103627909366959
出版商: Taylor & Francis Group
关键词: K‐feldspar;clay minerals;K‐uptake
数据来源: Taylor
摘要:
Twenty‐eight agriculturally important Delaware soils were cropped intensively in a greenhouse experiment. There was no consistent positive correlation between K uptake and percent sand, silt, clay, clay minerals of the clay fraction, K‐feld‐spars of the sand fraction or K‐feldspar weathering of the soils from the A horizon. Only potassium feldspar from the sand fraction and K‐feldspar weathering correlated with K uptake in the soils of the B horizon. This correlation was only significant at the latter part of the experiment when nonexchangeable K was probably the source of plant available K.
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