Biomedical Science & Research Journals | Preceding Rainy-Season Crops and Residue Management Practices on Growth, Yield and Economics of Succeeding Wheat under Zero-till Semi-Arid Condition
Conservation agriculture involving zero-till residue management
practices with crop diversity of short-duration rainy-season crops may
be
more viable approach to increase the productivity and resource-use
efficiency in semi-arid dryland areas. To identify suitable wheat-based
cropping
system an experiment was conducted with three preceding rainy-season
crops pearlmillet, clusterbean and greengram along with crop residue and
Leucaena twigs mulching. Both rainy- and winter-season crops were
grown under zero-till along with other recommended package of practices
under rainfed conditions during 2010-11 and 2011-12. Grain yield of
wheat was significantly higher in 2011-12 than in 2010-11, and with crop
residue than no residue. Preceding greengram resulted in significantly
higher grain yield of wheat (1.11 t ha-1 in 2010-11, and 2.49 t ha-1 in 2011-
12), followed by that after clusterbean. Greengram with crop residue recorded the highest grain yield of wheat (3.32 t ha-1), followed by clusterbean
with Leucaena twigs (3.29 t ha-1) and clusterbean with crop residue (2.94 t ha-1)
in 2011-12. The nutrient uptake followed the same trend as grain
and straw yield. The magnitude of total nutrient uptake of wheat was
about 25% more in 2011-12, than in 2010-11 due to its higher biomass
production in latter year. The economic analysis exhibited the highest
returns after greengram with crop residues and clusterbean with Leucaena
twigs. It was concluded that wheat after greengram and clusterbean with crop residue and Leucaena twigs mulching provided higher productivity
and profitability under semi-arid zero-till condition.
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