Data/hora: 11/06/2024 11:59:44

Provedor de dados: | 90
País: | Brazil
Título: | Soil, water and nutrient losses by interrill erosion from green cane cultivation
Autores: | Silva,Gilka Rocha Vasconcelos da; Souza,Zigomar Menezes de; Martins Filho,Marcílio Vieira; Barbosa,Ronny Sobreira; Souza,Gustavo Soares de.
Data: | 2012-06-01
Ano: | 2012
Palavras-chave: | Surface runoff; Cane trash; Rain simulation.
Resumo: | Interrill erosion occurs by the particle breakdown caused by raindrop impact, by particle transport in surface runoff, by dragging and suspension of particles disaggregated from the soil surface, thus removing organic matter and nutrients that are essential for agricultural production. Crop residues on the soil surface modify the characteristics of the runoff generated by rainfall and the consequent particle breakdown and sediment transport resulting from erosion. The objective of this study was to determine the minimum amount of mulch that must be maintained on the soil surface of a sugarcane plantation to reduce the soil, water and nutrient losses by decreasing interrill erosion. The study was conducted in Pradópolis, São Paulo State, in 0.5 x 1.0 m plots of an Oxisol, testing five treatments in four replications. The application rates were based on the crop residue production of the area of 1.4 kg m-2 (T1- no cane trash; T2-25 % of the cane trash; T3- 50 % trash; T4-75 % trash; T5-100 % sugarcane residues on the surface), and simulated rainfall was applied at an intensity of 65 mm h-1 for 60 min. Runoff samples were collected in plastic containers and soon after taken to the laboratory to quantify the losses of soil, water and nutrients. To minimize soil loss by interrill erosion, 75 % of the cane mulch must be maintained on the soil, to control water loss 50 % must be maintained and 25 % trash controls organic matter and nutrient losses. This information can contribute to optimize the use of this resource for soil conservation on the one hand and the production of clean energy in sugar and alcohol industries on the other.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000300026
Editor: | Sociedade Brasileira de Ciência do Solo
Relação: | 10.1590/S0100-06832012000300026
Formato: | text/html
Fonte: | Revista Brasileira de Ciência do Solo  v.36 n.3 2012
Fonte: | info:eu-repo/semantics/openAccess