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Potato (Solanum tuberosum L.) cultivation by zero tillage and paddy straw mulching in the saline soils of the Ganges Delta

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Title Potato (Solanum tuberosum L.) cultivation by zero tillage and paddy straw mulching in the saline soils of the Ganges Delta
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Creator Not Available
Sarangi, S.K., Maji, B., Sharma, P.C., Digar, S., Mahanta, K.K., Burman, D., Mandal, U.K., Mandal, S. and Mainuddin, M
 
Subject Coastal salinity; Cropping system; Economics; Foliar spray; Paddy straw; Ridge planting; Zero tillage
 
Description Not Available
In the coastal region of the Ganges Delta, rice is the predominant crop during the
wet/kharif season and most of the land remains fallow during dry/rabi season due
to soil salinity and irrigation water scarcity. Sustainable intensification of coastal
saline land needs an improved package of practices which conserves soil moisture,
facilitates early crop establishment, ensures profitability and has a positive effect
on soil health. To achieve these objectives, we evaluated seven treatments for the
potato crop in a randomized complete block design with five replications (farms)
during the rabi season of 2017–2018 and again in 2018–2019, viz. T1, ridge
planting (control); T2, zero tillage planting with 15 cm (9 t ha−1) paddy straw
mulching; T3, T2 + foliar spray of nutrients; T4, zero tillage planting with 20 cm
(12 t ha−1) paddy straw mulching; T5, T4 + foliar spray of nutrients; T6, zero
tillage planting with 25 cm (15 t ha−1) paddy straw mulching; and T7, T6 + foliar
spray of nutrients. Tuber yield was higher in T5, T6 and T7 (37.9–41.5 t ha−1)
during the second year over other treatments (21.5–32.3 t ha−1). About 200 mm of
irrigation water can be saved by zero tillage planting with paddy straw mulching
compared with ridge planting. The tuber quality in terms of crude protein, fat,
crude fibre and carbohydrate was better under zero tillage planting with paddy
straw mulching. The cost of cultivation of potato was reduced by about 27% due
to zero tillage planting (US$ 1211.6 ha−1) compared with conventional tillage,
intensive ridge planting practice (US$ 1660.4 ha−1). Zero tillage planting with
paddy straw mulching resulted in a net return of US$ 1779.2 ha−1, whereas under
conventional cultivation, it was US$ 589.6 ha−1. Zero tillage planting of potato
with paddy straw mulching reduced soil salinity (ECe) from 5 to 3 dS m−1,
conserved soil moisture (4–8%), improved soil bulk density from 1.49 to
1.44 Mg m−3 and increased soil organic carbon from 0.39 to 0.44%. The results
of this study suggest that zero tillage potato cultivation in the dry/rabi season can
increase cropping intensity in the salt-affected Ganges Delta and increase income
of the farmers.
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Date 2020-12-30T07:54:17Z
2020-12-30T07:54:17Z
2020-10-01
 
Type Article
 
Identifier Sarangi, S.K., Maji, B., Sharma, P.C., Digar, S., Mahanta, K.K., Burman, D., Mandal, U.K., Mandal, S. and Mainuddin, M. 2020. Potato (Solanum tuberosum L.) cultivation by zero tillage and paddy straw mulching in the saline soils of the Ganges Delta. Potato Research. https://link.springer.com/article/10.1007/s11540-020-09478-6.
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http://krishi.icar.gov.in/jspui/handle/123456789/44270
 
Language English
 
Relation Not Available;
 
Publisher Springer