Ryegrass management on the initial establishment of plants, nutrient cycling and grain yield of irrigated rice

Ciência Rural

Ferreira, Rafael Bruck³  Teló, Gustavo Mack²  Sartori, Gerson Meneghetti Sarzi³  Oliveira, Maurício Limberger de³  Cargnelutti Filho, Alberto³  Marchesan, Enio¹  Coelho, Lucas Lopes³ 

[1] UFSM, Santa Maria, Brazil;Embrapa Clima Temperado/ CAPES, Pelotas, Brazil;Universidade Federal de Santa Maria, Santa Maria, Brazil

关键词:  Oryza sativa;    crops succession;    cover crop;    hay productionINTRODUÇÃO:O sistema de semeadura direta em áreas de várzea pode ser incrementado através da implantação de plantas de cobertura de solo após a colheita do arroz irrigado ( Oryza sativa );   

DOI  :  10.1590/0103-8478cr20131473

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Ciencias Rurais

【 摘 要 】

:The objective of this research was to evaluate the effect of different managements of ryegrass straw in the off-season of irrigated rice on the initial establishment of plants, nutrient cycling and grain yield of the irrigated rice. The experiment was conducted in lowland area during the 2010/11 and 2011/12 crop seasons, in a randomized complete block, with five replications and the treatments were constituted by: ryegrass desiccation timings before the rice planting, fallow and straw removal through ryegrass hay production. There is a reduction of rice stand as there is a delay in the ryegrass desiccation approaches to rice planting. Use of ryegrass in lowlands intensifies the nutrient cycling; however, it is recommended that in non grazed ryegrass the desiccation should be performed 60 days before the irrigated rice planting without reducing grain yield. Ryegrass hay production is a viable alternative for the off-season in lowlands because it does not reduce the initial establishment of irrigated rice plant.

【 授权许可】

Unknown