Coal Combustion By-Product Use on Acid Soil: Effects on Maize Growth and Soil pH and Electrical Conductivity
2013; Linguagem: Inglês
10.2134/asaspecpub58.c7
ISSN2165-9710
AutoresR. B. Clark, S. K. Zeto, K. D. Ritchey, R. R. Wendell, V. C. Baligar,
Tópico(s)Clay minerals and soil interactions
ResumoMany coal combustion by-products (CCBP's) such as fly ashes, fluidized bed combustion BP's, and flue gas desulfurization BP's (FGD-BP's) are produced when coal is burned for generation of electricity. Most of these CCBP's are disposed in landfills/surface impoundments, and interest has arisen in using these BP's on agricultural land, especially as an acid soil amendment. Leaf area per gram shoot dry matter yield (DMY) was relatively constant over all experiments and the mean value for plants grown in unamended soil was 35.8 m2 kg-1 shoot DMY. Soil pH and electrical conductivity (EC) values were similar before and after plants were grown in pots. The maize hybrid used in greenhouse studies grew relatively well on the unamended acid Porters soil. The results provide information about the effects of CCBP's added to acid soil, especially FGD-BP's, on maize growth and on soil pH and EC under fairly optimal growth conditions.
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