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NEW ADVANCES IN BORON SOIL CHEMISTRY - Paper
Citation:
GOLDBERT, S., G. E. BROWN, AND C. SU. NEW ADVANCES IN BORON SOIL CHEMISTRY - Paper. In Proceedings, The 3rd International Symposium on all Aspects of Plant and Animal Boron Nutrition. Advances in Plant and Animal Boron Nutrition, ISBN 978-1-4020-5381-8, Wuhan, CHINA, September 09 - 13, 2005. Springer Netherlands, , Netherlands, 313-331, (2005).
Impact/Purpose:
Non EPA Proceedings
Description:
Boron is an essential plant micronutrient for which the range between deficiency and toxicity is narrower than for any other nutrient element. Plants respond directly to the amount of B in soil solution and only indirectly to the amount of B adsorbed on soil particle surfaces. Therefore the adsorption complex acts as both a source and a sink for B and can attenuate phytotoxic soil solution B concentrations. Many aspects of B soil chemistry play an important role in governing plant B response. These include: methodologies for determining the mechanisms of B attachment to soil particle surfaces, kinetics of B desorption reactions, description and prediction of B adsorption reactions using chemical models, use of B soil tests to predict plant response in field situations. A detailed understanding of B adsorption behavior is necessary to gain an accurate assessment of soil solution B concentrations that is essential for predicting plant response. Indirect and direct experimental procedures have been used to determine the mode of B attachment to soil particle surfaces. Accurate characterization of the desorption reactions that release B into soil solution is also important. Many modeling approaches exist for describing B adsorption reactions on soils and soil minerals. To evaluate management options for high B soils and waters, a model that can predict solution B concentrations is needed. Boron soil tests need to be tested for their ability to predict soil solution B concentrations under conditions of potential B toxicity, especially in field situations
