Book of Extended summaries ISDA

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges &
Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad
specific climate regime, when adequate soil moisture maintained by rainfall and/or irrigation
so that it does not limit plant growth and crop yield. The assessment of water needs of the crop
based on day-to-day weather parameters seems to be more rational than any other method in
agricultural fields, large spatial variations in soil water content are associated with soil
heterogeneities such as precipitation level, land cover, topography, evapotranspiration etc.
Keeping this in view, the present investigation “yield and economics of pulses and oilseed as
influenced by irrigation levels in Dry Zone of Jharkhand” was taken up during kharif 2020 and
2021 at Zonal Research Station, Palamau, Jharkhand.
Methodology
The experiment was conducted in split plot design during winter season for two consecutive
years from 2020-21 & 2021-2022 having three levels of supplemental irrigation one irrigation
at Pre- flowering stage at 50-60 DAS (I1), One irrigation at pre - Pod formation at 60-70 DAS
( I 2 ) & combinations of both (I 3) to provide lifesaving irrigation at critical stages of different
pulse and oilseed crops viz.C1 - Chickpea, C2 – Lentil, C3 - Linseed and C4 – Safflower at Zonal
Research Station, Chianki (Palamau) under All India Coordinated Research Project on Dryland
agriculture of Birsa Agricultural University, Ranchi (Jharkhand).The soil was sandy loam in
texture, with pH 5.6, organic carbon 0.47%, available nitrogen 265.4 kg ha -1 , phosphorus 14.7
kg ha -1 and potassium 175.2 kg ha -1 .
Results
Different rabi pulse and oilseed crops were compared in respect of irrigation levels ie.
supplemental irrigation at different crop development stage. Significantly higher mean seed
yield (1141 kg ha -1 ) was recorded when two supplemental irrigations (I3) were supplied to the
crop ie 1 st at Pre- flowering stage (50-60 DAS) and 2 nd at Pre -pod formation stage (60-70
DAS). Similarly, maximum Net return (Rs.29111 ha -1 ), B:C ratio (1.81) and RWUE (40.49 kg
ha -1 mm -1 ) were obtained with I3 which showed its superiority over irrigation level I1& I2.
Among different pulse and oilseed crops, results revealed that maximum mean seed yield (1073
kg ha -1 ) was exhibited by Chickpea crop which was significantly superior to safflower yield
but at par with lentil (919 kg ha -1 ) & linseed yield (914 kg ha -1 ). Similarly, higher mean value
of Net return (29697Rs. ha -1 ) & RWUE (38.16kg ha -1 mm -1 ) but B:C ration was higher in lentil
crop (2.06) it might be due to differences in cost of cultivation.
Conclusion
The treatment combination of irrigation provides to life saving irrigation at critical stages of
chickpea recorded a significantly higher yield 1141 kg ha-1 than the rest of the combinations.
Hence scheduling irrigation (I 3) in pulses enhances growth and yield in rainfed areas of
Jharkhand.
Resilience through land and water management interventions, water management and governance
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