Data/hora: 05/06/2024 14:49:18

Biblioteca(s): | Embrapa Arroz e Feijão.
Data corrente: | 02/02/2010
Data da última atualização: | 13/07/2020
Autoria: | FAGERIA, N. K.; BALIGAR, V. C.; LI, Y. C.
Afiliação: | NAND KUMAR FAGERIA, CNPAF; V. C. BALIGAR; Y. C. LI.
Título: | Differential soil acidity tolerance of tropical legume cover crops.
Ano de publicação: | 2009
Fonte/Imprenta: | Communications in Soil Science and Plant Analysis, v. 40, n. 7/8, p. 1148-1160, 2009.
DOI: | https://doi.org/10.1080/00103620902754127
Idioma: | Inglês
Conteúdo: | In tropical regions, soil acidity and low soil fertility are the most important yield-limiting factors for sustainable crop production. Using legume cover crops as mulch is an important strategy not only to protect the soil loss from erosion but also to ameliorate soil fertility. Information is limited regarding tolerances of tropical legume cover crops to acid soils. A greenhouse experiment was conducted to determine the differential tolerance of 14 tropical legume cover crops to soil acidity. The acidity treatments were high (0 g lime kg21 soil), medium (3.3 g lime kg21 soil), and low (8.3 g lime kg21 soil). Shoot dry weight of cover crops were significantly affected by acidity treatments. Maximum shoot dry weight was produced at high acidity. Jack bean, black mucuna, and gray mucuna bean species were most tolerant to soil acidity, whereas Brazilian lucern and tropical kudzu were most susceptible to soil acidity. Overall, optimal soil acidity indices were pH5.5, hydrogen (H)+ aluminum (Al) 6.8 cmolc kg21, base saturation 25%, and acidity saturation 74.7%. Species with higher seed weight had higher tolerance to soil acidity than those with lower seed weight. Hence, seed weight was associated with acidity tolerance in tropical legume species.
Palavras-Chave: | Shoot dry weight.
Thesagro: | Acidez do solo; Cobertura do solo; Fertilidade do solo; Legume.
Thesaurus Nal: | Base saturation; Soil pH.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
Registro original: | Embrapa Arroz e Feijão (CNPAF)
Exemplares: | CNPAF - (29482-1) - UPC - AP - DD - 2009 -  - 2009 - DIS