Artigo
Heavy metals in cowpea (Vigna unguiculata L.) after tannery sludge compost amendment
Registro en:
Chilean Journal Of Agricultural Research. Chillan: Inst Investigaciones Agropecuarias, v. 73, n. 3, p. 282-287, 2013.
0718-5839
10.4067/S0718-58392013000300011
WOS:000325635100011
WOS000325635100011.pdf
Autor
Silva, Maria Doroteia Marcal
Araujo, Ademir Sergio Ferreira
Nunes, Luis Alfredo Pinheiro Leal
Melo, Wanderley Jose de [UNESP]
Singh, Rajeev Pratap
Resumen
Repeated soil amendment with industrial waste can affect the accumulation of chemical elements, mainly heavy metals, in plants. We therefore evaluated the accumulation of Cr, Cd, Ni, and Pb in cowpea (Vigna unguiculata [L.] Walp.) shoots and grains in soil amended for three consecutive years with tannery sludge compost (TSC). Tannery sludge compost was applied annually starting in 2009 at 0, 2.5, 5, 10, and 20 t ha(-1) and cowpea was sown. At 40 and 60 d after cowpea sowing, the accumulation of Cr, Cd, Pb, and Ni was evaluated in the shoots and grains, respectively. The experiment used completely randomized design with four replicates and data were subjected to ANOVA and F-test (5%). Only Cr accumulation was significant (P < 0.05) in the cowpea shoots after 3 yr of TSC amendment; accumulation increased as TSC rates were applied. However, there was no significant Cr, Cd, Ni, and Pb accumulation in grains. After 3 yr of consecutive TSC soil amendments, Cr accumulated in the shoots, but it was not translocated to the grains. Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundacao de Amparo a Pesquisa do Estado do Piaui (FAPEPI) Univ Fed Piaui, Ctr Cincias Agr, BR-64000000 Teresina, Piaui, Brazil Univ Etadual Paulista UNESP, Fac Cincias Agr & Vet, BR-18000000 Jaboticabal, SP, Brazil Banaras Hindu Univ, Inst Environm & Sustainable Dev, Varanasi 221005, Uttar Pradesh, India Univ Etadual Paulista UNESP, Fac Cincias Agr & Vet, BR-18000000 Jaboticabal, SP, Brazil