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Abstract
Burning of rice stubbles is widely practised in Punjab, India, due to a lack of
suitable machinery to direct drill wheat into combine-harvested rice residues.
Although burning is a rapid and cheap option, and allows quick turn around between
crops, it has serious effects on human and animal health due to air pollution,
reduced soil fertility due to loss of nutrients and organic matter, and green house gas
(GHG) emissions. The recently developed Happy Seeder (HS) overcomes the
technical problems associated with direct drilling into rice residues. The primary
aim of the present study was to conduct a preliminary evaluation of the direct
financial benefits and costs to farmers of use of the HS in comparison with the
current practices of straw burning followed by direct drilling or conventional tillage
prior to sowing. The results of the evaluation suggest that the HS technology is
more profitable than conventional cultivation or direct drilling after burning, and
that it is viable for farmers from a financial perspective. The net present value
(NPV) of the benefits is highly sensitive to yield; a 5% increase in yield with the HS
doubles the increase in NPV of the HS over conventional tillage. The NPV is also
quite sensitive to changes in herbicide use, and less sensitive to changes in irrigation
water saving and discount rate. Furthermore, there are significant economic,
community and environmental benefits through adoption of the technology. For
widespread adoption of the technology, a range of potential mechanical, technical,
social, institutional and policy constraints need to be considered and addressed in
conjunction with a detailed economic assessment of the HS technology.