Otro
Growth and nodulation of cowpea after 5 years of consecutive composted tannery sludge amendment
Registro en:
Spanish Journal Of Agricultural Research. Madrid: Spanish Natl Inst Agricultural & Food Research & Technolo, v. 12, n. 4, p. 1175-1179, 2014.
1695-971X
10.5424/sjar/2014124-6282
WOS:000346393700031
WOS000346393700031.pdf
Autor
Miranda, Ana R. L.
Nunes, Luis A. P. L.
Oliveira, Mara L. J.
Melo, Wanderley Jose de
Araujo, Ademir S. F.
Resumen
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. Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)