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NEW ADVANCES IN BORON SOIL CHEMISTRY - Paper
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).
Non EPA Proceedings
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