اثرات خاکورزی حفاظتی، مدلهای کشت و استفاده از بقایای گیاهی در عملکرد سویا در الگوی کشت سویا - گندم

Abstract
Soybean-wheat is the most emerging cropping system to diversify the existing unsustainable predominant
rice-wheat in the Indo-Gangetic Plain Zone of India. Cultivation of soybean in kharif season has a
considerable potential due to congenial climate, while wheat in rabi season has witnessed a phenomenal
growth in the region. The field experiment was conducted at Research farm of Division of Agronomy, Indian
Agricultural Research Institute, New Delhi to find the effect of conservation tillage and crop establishment
and residue management on productivity of soybean. The experiment was laid out in split-plot design
keeping four combinations of tillage, viz. conventional tillage (CT) and zero tillage (ZT), and crop
establishment practices, viz. raised-bed and flat-bed in main-plot; and residue management, viz. control,
wheat residue, soybean residue, and wheat residue + soybean in sub-plots with three replications. CT and ZT
with raised-bed and flat-bed did not shown significant effect on yield and yield attributes. However the
application of wheat residue + soybean residue given higher yield over others treatments. We conclude that,
the application of both crop residues is much better than single application of crop residue.