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Book of Extended summaries ISDA

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International Conference on Reimagining Rainfed Agro-ecosystems: Challenges &<br />

Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad<br />

cotton yield was realized with complementary alliance <strong>of</strong> insitu moisture conservation<br />

measures with stress management practices in the present study. Significant influence by<br />

stress management practices also recorded with soil application <strong>of</strong> PUSA hydrogel @ 5 kg<br />

/ha + foliar spray <strong>of</strong> PPFM @ 500 ml /ha, which registered higher seed cotton yield.<br />

Effect <strong>of</strong> insitu moisture conservation & stress management practices on sympodial<br />

plant -1 , boll weight (g boll -1 ), bolls plant -1 and seed cotton yield (kg ha -1 ) <strong>of</strong> rainfed cotton<br />

(Pooled data <strong>of</strong> rabi 2016 & rabi 2017)<br />

Treatments<br />

Sympodia<br />

Plant -1<br />

Insitu moisture conservation<br />

Boll<br />

weight<br />

(g boll -1 )<br />

Bolls<br />

Plant -<br />

1<br />

Seed cotton<br />

yield (kg ha -<br />

1<br />

)<br />

Broad bed and furrows 13.0 3.76 18.1 1,590<br />

Ridges and furrows 11.9 3.53 15.8 1,467<br />

Compartmental bunding 10.9 3.36 13.5 1,350<br />

S.Ed 0.2 0.10 0.6 32<br />

CD (P=0.05) 0.5 0.24 1.6 117<br />

Stress management practices<br />

Soil application <strong>of</strong> pusa hydrogel @ 5 kg ha -1 11.3 3.42 13.7 1,376<br />

Soil application <strong>of</strong> pusa hydrogel @ 5 kg ha -1 +<br />

foliar spray <strong>of</strong> 1% KCl<br />

Soil application <strong>of</strong> pusa hydrogel @ 5 kg ha -1 +<br />

foliar spray <strong>of</strong> 5% Kaolin<br />

12.4 3.71 19.0 1,580<br />

12.2 3.50 16.7 1,485<br />

Soil application <strong>of</strong> pusa hydrogel @ 5 kg ha -1 +<br />

foliar spray <strong>of</strong> PPFM @ 500 ml ha -1 13.2 3.85 20.8 1786<br />

Soil application <strong>of</strong> pusa hydrogel @ 5 kg ha -1 +<br />

foliar spray <strong>of</strong> Salicylic acid 100 ppm<br />

12.0 3.48 15.2 1,476<br />

Control 3.31 9.4 1,109<br />

S.Ed 0.3 0.11 0.6 48<br />

CD (P=0.05) 0.6 0.16 1.2 100<br />

Conclusion<br />

Broad bed and furrows combined with foliar application <strong>of</strong> PPFM spray at 500 ml ha -1<br />

resulted in significantly taller plants, higher dry matter production, LAI, yield attributing<br />

characters like number <strong>of</strong> sympodia plant -1 , number <strong>of</strong> bolls plant -1 , boll weight and seed<br />

cotton yield under rainfed areas. The higher values indicate that the moisture conservation<br />

and stress management practices improved growth rate performance leading to higher yield<br />

potential <strong>of</strong> rainfed cotton. Broad bed and furrows combined with soil application <strong>of</strong> pusa<br />

hydrogel @ 5 kg ha -1 + foliar spray <strong>of</strong> PPFM @ 500 ml ha -1 during the stress period was<br />

found to be the best agronomic management practice in order to enhance yield in cotton<br />

under rainfed vertisols.<br />

298 | Page<br />

Climate resilient agriculture for risk mitigation

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