INFLUENCE OF WINTER CROPS ON SOYBEAN YIELD IN CROP ROTATION SYSTEMS

Ciência Rural

Lhamby, Julio Cesar Barreneche¹  Santos, Henrique Pereira dos² 

[1]EMBRAPA

[2]EMBRAPA, Passo Fundo

关键词: crop succession;    yield;    plant height;    white oat;    black oat;    flax;    wheat;   

DOI  :  10.1590/S0103-84782001000100001

学科分类：农业科学（综合）

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

【 摘 要 】

Different preceding crops on the yield and height of soybean plants was assessed during nine years at EMBRAPA-Centro Nacional de Pesquisa de Trigo (CNPT), in Passo Fundo, RS, Brazil. The treatments consisted of seven crop systems, and soybean was sown in succession to white oat, black oat, flax, and wheat. Two plots were added in 1990; one to complement system II and the other as winter fallow preceding soybean (system VII). Winter crops were set up using conventional soil preparation, and summer crops were sown under no-tillage. An experimental design of blocks at random, with three replications and plots totalling 30m2, was used. The grown soybean after flax, in the mean of the period 1987 to 1989, in systems IV and VI showed lower plant on height and lower yield. No significant differences were found on the evoluated preceding crops on the yield over the periods 1990 to 1992 and 1993 to 1995. The grown soybean after white oat, black oat or wheat may be included in the different systems studied without any adverse effect.

【 授权许可】

CC BY-NC