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Chemical composition and decomposition rate of plants used as green manure

2008; UNIVERSIDADE DE SÃO PAULO; Volume: 65; Issue: 3 Linguagem: Inglês

10.1590/s0103-90162008000300010

1678-992X

Gabriela Tavares Arantes Silva, Laudiceio Viana Matos, Pedro de Oliveira Nóbrega, Eduardo Francia Carneiro, Alexander Silva de Resende,

Growth and nutrition in plants

Productive systems in which green manure is the source of nutrients must develop more efficient ways to improve soil nutrient dynamics. A well-synchronized balance must be established between specific crop demands and supply of nutrients from decomposition. However, scientific data and information to help improve green manure management in Brazil is still insufficient. For that reason, a number of arboreal species was first chemically characterized and then subjected to decomposition analysis in order to establish a correlation between some parameters. Species were grouped together based on the similarity of chemical composition and decomposition rate. The lignin:N and (lignin+polyphenol):N ratios were found to have the greatest correlation coefficient with the dry matter decomposition rate and nitrogen release.