COMPARATIVE EVALUATION OF ZERO - TILLAGE CUM MULCHING WITH CONVENTIONAL POTATO PRODUCTION UNDER TRANSPLANTED RICE –POTATO CROPPING SYSTEM
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Authors
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Shiv Pratap Singh
-
Dr Raj Kumar singh
ICAR-Central Potato Research Institute Regional Station, Patna 80014, Bihar
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Murlidhar Jaganath Sadawarti
2ICAR-Central Potato Research Institute Regional Station, Gwalior 474005, Madhya Pradesh
-
Dr Sanjay Rawal
ICAR-Central Potato Research Institute Regional Station, Meerut 250110, Uttar Pradesh
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Jagdev Sharma
ICAR-Central Potato Research Station, Institute, Shimla- 171001, Himachal Pradesh
-
Dr Brajesh Singh
ICAR-Central Potato Research Station, Institute, Shimla- 171001, Himachal Pradesh
Keywords:
Rice, potato, equivalent yield, mulch, zero – tillage, water use efficiencyAbstract
Environmental problems such as GHG emissions like carbon dioxide (CO2), methane
(CH4) and nitrous oxide (N2O) emission from rice-residue burning, the over exploitation of
underground water, land degradation, and productivity reductions in rice-based agricultural systems
is negatively impacting productivity of rice based cropping system and increasing environmental
concerns. A field study was conducted at the research farm of ICAR- Central Potato Research
Institute RS, Patna (Bihar) during the Rabi seasons of 2022- 23 and 2023-24 with seven treatment
combinations having Farmer’s practice, zero tillage + mulching, Regional AICRP/ ICAR-CPRI
recommendations, Flat-bed planting with slit, Flat-bed planting & mulching, Flat-bed planting
& ridging and Flat-bed planting, ridging & mulching. Treatments were replicated thrice. Highest
rice grain yield (5.1 t/ha) was recorded with Flat-bed planting, ridging & mulching (T7) which
was statistically same compared to other treatments. Highest B:C (1.62) of rice cultivation was
recorded with T7 which was statistically same compared to all other treatments. The highest
number of total tubers was recorded with Zero tillage + mulching (T2) (624 thousand/ha) which was
statistically same with all other treatments. The highest total tuber yield (26.8 t/ha) was recorded
with T2 which was significantly higher than all other treatments except T5 and T7. The highest
net return (`114554/ha) of potato was recorded with T5 which was significantly higher than all
other treatments except T2. Highest water use efficiency of potato was recorded with T2 (76.63 kg
tuber/ha-mm water) which was significantly higher than all other treatments except T5 and T7.
The highest rice equivalent yield (14.86 t/ha) was highest with T2 which was significantly higher
than all other treatments except T5 and T7. Zero tillage in combination with paddy straw mulch
will enhance crop productivity, system sustainability, system vitality, economic profitability, and
environmental quality.
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