Growth and nodulation of cowpea after 5 years of consecutive composted tannery sludge amendment
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Undergraduate course
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Spanish Natl Inst Agricultural & Food Research & Technolo
Type
Article
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Acesso aberto
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Abstract
Tannery industry releases high amounts of tannery sludge which are currently composted and used in agricultural soils. The consecutive amendment of such composted tannery sludge (CTS) may affect soil microrganisms, such as rhizobia. In this study, we evaluated the effects of 5-year repeated CTS amendment on growth, nodulation, and yield of cowpea (Vigna unguiculata L.) CTS was applied in different amounts (0, 2.5, 5, 10 and 20 Mg ha(-1)) to a sandy soil. Amendment of CTS increased soil pH, electrical conductivity (EC), sodium and chromium content. Plant growth, nodulation, N accumulation, and cowpea yield increased up to 10 Mg hat however, above this rate, these variables decreased. After 5 years of CTS amendment, the increase in soil chemical properties, particularly EC and Na content, exerted negative effects on the growth, nodulation, and yield of cowpea.
Description
Keywords
wastes, sandy soil, rhizobia, composting, Vigna unguiculata L.
Language
English
Citation
Spanish Journal Of Agricultural Research. Madrid: Spanish Natl Inst Agricultural & Food Research & Technolo, v. 12, n. 4, p. 1175-1179, 2014.
