Common bean yield and the suppressive effect of winter cover crops on summer weeds

被引:1
|
作者
Bittencourt, Henrique von Hertwig [1 ]
Lovato, Paulo Emilio [2 ]
Comin, Jucinei Jose [2 ]
Lana, Marcos Alberto [2 ]
Altieri, Miguel Angel [3 ]
机构
[1] Inst Agron Parana, Area Fitotecnia, BR-85501970 Pato Branco, Parana, Brazil
[2] Univ Fed Santa Catarina, Ctr Ciencias Agr, Dept Engn Rural, Florianopolis, SC, Brazil
[3] Univ Calif Berkeley, Dept Ciencias Ambientais Polit & Gestao, Berkeley, CA 94720 USA
来源
ACTA SCIENTIARUM-AGRONOMY | 2009年 / 31卷 / 04期
关键词
no-tillage; spontaneous plants; yield; soil conservation; NO-TILL; MANAGEMENT; ALLELOPATHY;
D O I
10.4025/actasciagron.v31i4.988
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
Common bean yield and the suppressive effect of winter cover crops on summer weeds. The effect of the winter cover crops rye, oat, ryegrass, vetch and fodder radish (and their mixtures) in no-tillage systems was investigated oil soil cover, cover crop biomass and summer weed biomass during the critical competition stage with common bean. Bean yield was also evaluated. The experimental design was randomized complete blocks and four repetitions. The highest soil cover during winter was observed in the treatments rye + vetch, rye + vetch + fodder radish and oat + vetch. The highest values of cover crops biomass production were observed in the treatments rye + vetch + fodder radish. Weed suppression was higher in the ryegrass monoculture and in the rye + vetch + fodder radish association, and there was no correlation between cover crop biomass and summer weed suppression; the best bean yields were achieved with the following treatments: ryegrass in monoculture, oat in monoculture and rye + vetch, producing 1,950, 1,730 e 1,790 kg ha(-1) respectively. The monocultures of ryegass and oat showed the lowest costs with seeds and the highest economic returns.
引用
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页码:689 / 694
页数:6
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