Biomass production and nutrient accumulation by cover crops in the Brazilian Cerrado of Piaui State

被引：17
|
作者：
Pacheco, Leandro Pereira [1 ]
de Sousa Monteiro, Marinete Martins [2 ]
da Silva, Rodrigo Fonseca [3 ]
Soares, Leandro dos Santos [3 ]
Fonseca, Weverson Lima [4 ]
Azevedo Nobrega, Julio Cesar [3 ]
Petter, Fabiano Andre [5 ]
Neto, Francisco de Alcantara [6 ]
Osajima, Josy Anteveli [7 ]
机构：
[1] Univ Fed Mato Grosso UFMT, BR-78735000 Rondonopolis, MT, Brazil
[2] Univ Fed Piaui UFPI, Programa Posgrad Agron Fitotecnia, BR-64900000 Bom Jesus, PI, Brazil
[3] UFPI, Programa Posgrad Solos & Nutr Plantas, BR-64900000 Bom Jesus, PI, Brazil
[4] UFPI, BR-64900000 Bom Jesus, PI, Brazil
[5] UFMT, Dept Fitotecnia, BR-78557267 Sinop, MT, Brazil
[6] Univ Fed Piaui, Dept Fitotecnia, BR-64049000 Teresina, PI, Brazil
[7] UFPI, Dept Quim, BR-64900000 Bom Jesus, PI, Brazil
来源：
BRAGANTIA | 2013年 / 72卷 / 03期
关键词：
Brachiaria; millet; decomposition; crotalaria; no-tillage; NO-TILLAGE; RELEASE; YIELD;
D O I：
10.1590/brag.2013.041
中图分类号：
S [农业科学];
学科分类号：
09 ;
摘要：
The objective of this work was to evaluate the biomass production and nutrient accumulation in potential cover crops sown in different cropping systems in the Brazilian Cerrado of Piaui State. The experiment was conducted in the crop season 2010/2011 in the Serra do Quilombo, county of Bom Jesus, Piau, Brazil. This study was arranged in split plot scheme, with soil management systems (conventional tillage and no-tillage) evaluated in plots and crop systems in subplots: S-1-Soybean monoculture in the crop-season; S-2-Soybean in crop-season and Pennisetum glaucum for off-season; S-3 - P. glaucum before soybean crop-season and Urochloa ruziziensis oversown on soybean in the phenological stage R-5.5; S-4 - Soybean crop-season and P. glaucum oversown on soybean in R-5.5; S-5 - Maize + U. ruziziensis simultaneously in crop-season. The experimental design was in randomized blocks, with four replications. The crop systems with oversown of P. glaucum and U. ruziziensis on soybean and the consortium maize + U. ruziziensis improved the biomass production, soil coverage and nutrient accumulation during the off-season in the Cerrado from Piau State, Brazil. The nutrients with greater accumulation rate by cover crops were nitrogen and potassium.
引用
收藏
页码：237 / 246
页数：10
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