Book of Extended summaries ISDA
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Book of Extended summaries ISDA

Book of Extended summaries ISDA Book of Extended summaries ISDA

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International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad Results At 35 th year of experimentation the treatment T 7 (25 kg N ha -1 FYM+ 25 kg N ha -1 Urea) gave significantly higher grain (19.25 q ha -1 ) and stover (40.42 q ha -1 ) yield, net monetary returns (Rs. 39525 ha -1 ) with B: C ratio (2.25), RWUE (32.08 kg ha -1 mm -1 ). The nutrients uptake by Rabi sorghum as well as rain water use efficiency and residual soil fertility (major and micro nutrients) were also increased as shown in the table. The N fixers and P solubilizers count was more under Leucaena application either alone or with crop residue or FYM. Nishimura (1994) reported that green gram as a mulch-cum-manure to rabi sorghum increased the gross profit by 132 per cent. Conjoint use of FYM and chemical fertilizers on soybean-safflower sequence cropping showed that the half of recommended fertilizers (10 N + 40 P 2O 5 ha -1 + 6 tonnes FYM) gave highest yield of soybean and safflower (Sharma, 1992). Reddy et al. (1991) also reported similar trend of results i.e., 75 per cent substitution of chemical N with use of Leucaena leucocphala gave higher bio mass and yield of sorghum. Conclusion From the above study it can be concluded that, the nitrogen requirement of rRabi sorghum can be fulfilled by conjoint use of organic (50 %) and inorganic fertilizers (50 %) or equally effective treatment i.e., 50 % N ha -1 through CR + 50% N ha -1 through Leucanea lopping which maintan the better soil health, RWUE and microbial count. This can be way forward to make organic farming in rainfed area that conserve natural resources and make farming more resilient and less dependent on chemical inputs. Effect of recycling of different organics on yield and RWUE by grain and stover of rabi Resource conservation and rainfed agriculture sorghum (2021-22) Treatment Yield (q ha -1 ) Cost of Cult n Rs/ha Grain 2021- 22 Stover 2021- 22 Mean Grain (35years) Mean Stover (35years) Net Returns Rs/ha B:C Ratio RWUE (Kg ha -1 mm -1 ) 0 kg N ha -1 –control 7.72 16.23 5.77 15.72 24595 3892 1.16 12.86 25 kg N ha -1 –urea 8.65 18.07 7.60 20.62 24916 6944 1.28 14.41 50 kg N ha -1 –urea 10.97 25.75 9.30 23.86 25238 16608 1.66 18.29 25 kg N ha -1 –CR 9.28 19.48 8.11 20.62 28762 5469 1.19 15.46 25 kg N ha -1 –FYM 10.29 21.53 9.03 22.38 31174 6748 1.22 17.14 25 kg N ha -1 -CR +25 kg N ha -1 –urea 25 kg N ha -1 - FYM +25 kg N ha - 1 urea 25 kg N ha -1 –CR +25 kg N ha -1 –Leucaena loppings 14.58 30.61 10.86 25.92 29083 24705 1.85 24.29 19.25 40.42 12.84 28.21 31495 39525 2.25 32.08 18.23 38.28 12.15 27.34 31967 35289 2.10 30.38 25 kg N ha -1 -Leucaena loppings 8.61 18.09 8.23 20.30 27800 3983 1.14 14.36 25 kg N ha -1 -Leucaena 12.26 25.76 10.80 24.54 28121 17130 1.61 20.44 566 | Page

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad loppings+25 kg N ha -1 –urea SE+ 0.56 1.63 -- -- 2219.1 -- -- CD at 5% 1.69 4.88 -- -- 6644.5 -- -- Effect of treatments on soil chemical properties at harvest (2021-22). Treatments pH EC Available Nutrients (kg/ha) DTPA extractable micronutrients (ppm) N P K Fe Mn Zn Cu 0 kg N ha -1 –control 7.96 0.47 119.00 16.18 681.00 2.55 4.29 0.18 0.52 25 kg N ha -1 –urea 7.78 0.56 159.67 21.78 819.33 3.48 5.90 0.38 1.36 50 kg N ha -1 –urea 7.95 0.58 168.67 24.38 883.00 4.34 6.45 0.32 1.26 25 kg N ha -1 –CR 7.42 0.61 180.00 34.57 951.00 4.46 6.58 0.45 1.34 25 kg N ha -1 –FYM 7.31 0.66 184.00 30.83 969.00 4.47 7.59 0.47 1.37 25 kg N ha -1 -CR +25 kg N ha -1 –urea 25 kg N ha -1 - FYM +25 kg N ha - 1 urea 25 kg N ha -1 –CR +25 kg N ha -1 –Leucaena loppings 7.20 0.68 190.00 31.43 974.33 4.65 7.65 0.60 1.49 7.22 0.70 203.00 35.22 993.00 4.81 7.64 0.61 1.51 7.20 0.74 203.67 39.31 996.00 4.72 8.00 0.63 1.54 25 kg N ha -1 -Leucaena loppings 7.28 0.71 180.00 31.30 868.67 4.40 7.94 0.51 1.32 25 kg N ha -1 -Leucaena loppings +25 kg N ha -1 –urea 7.30 0.72 189.00 33.66 885.67 3.79 7.43 0.49 1.23 SE+ 0.01 0.01 0.79 0.45 2.04 0.02 0.02 0.01 0.01 CD at 5% NS NS 2.29 1.31 5.89 NS NS NS NS Initial Values (2013-14) 8.1 0.49 137 11.5 592 2.95 12.6 0.49 0.50 References Nishimura, Y. 1994. An improved technology of rainfed farming in the semi arid tropics. Japanese J. Trop. Agri. 38:103 Reddy, G. S., Venkateshwaralu, B., and. Vittal, K. P. R. 1991. Effect of substitution of fertilizer nitrogen with subabul (Leucaena leucocephela) leaves on growth and yield of sorghum (Sorghum bicolor) in an alfisol. Indian J. Agril. Sci. 61:316. Sharma, R. A. 1992. Efficient water use and sustainable production of rainfed soybean and safflower through conjunctive use of organic and fertilizers. Crop. Res.181. 567 | Page Resource conservation and rainfed agriculture

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

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

Results<br />

At 35 th year <strong>of</strong> experimentation the treatment T 7 (25 kg N ha -1 FYM+ 25 kg N ha -1 Urea) gave<br />

significantly higher grain (19.25 q ha -1 ) and stover (40.42 q ha -1 ) yield, net monetary returns<br />

(Rs. 39525 ha -1 ) with B: C ratio (2.25), RWUE (32.08 kg ha -1 mm -1 ). The nutrients uptake by<br />

Rabi sorghum as well as rain water use efficiency and residual soil fertility (major and micro<br />

nutrients) were also increased as shown in the table. The N fixers and P solubilizers count<br />

was more under Leucaena application either alone or with crop residue or FYM. Nishimura<br />

(1994) reported that green gram as a mulch-cum-manure to rabi sorghum increased the gross<br />

pr<strong>of</strong>it by 132 per cent. Conjoint use <strong>of</strong> FYM and chemical fertilizers on soybean-safflower<br />

sequence cropping showed that the half <strong>of</strong> recommended fertilizers (10 N + 40 P 2O 5 ha -1 + 6<br />

tonnes FYM) gave highest yield <strong>of</strong> soybean and safflower (Sharma, 1992). Reddy et al.<br />

(1991) also reported similar trend <strong>of</strong> results i.e., 75 per cent substitution <strong>of</strong> chemical N with<br />

use <strong>of</strong> Leucaena leucocphala gave higher bio mass and yield <strong>of</strong> sorghum.<br />

Conclusion<br />

From the above study it can be concluded that, the nitrogen requirement <strong>of</strong> rRabi sorghum<br />

can be fulfilled by conjoint use <strong>of</strong> organic (50 %) and inorganic fertilizers (50 %) or equally<br />

effective treatment i.e., 50 % N ha -1 through CR + 50% N ha -1 through Leucanea lopping<br />

which maintan the better soil health, RWUE and microbial count. This can be way forward to<br />

make organic farming in rainfed area that conserve natural resources and make farming more<br />

resilient and less dependent on chemical inputs.<br />

Effect <strong>of</strong> recycling <strong>of</strong> different organics on yield and RWUE by grain and stover <strong>of</strong> rabi<br />

Resource conservation and rainfed agriculture<br />

sorghum (2021-22)<br />

Treatment Yield (q ha -1 ) Cost <strong>of</strong><br />

Cult n<br />

Rs/ha<br />

Grain<br />

2021-<br />

22<br />

Stover<br />

2021-<br />

22<br />

Mean<br />

Grain<br />

(35years)<br />

Mean<br />

Stover<br />

(35years)<br />

Net<br />

Returns<br />

Rs/ha<br />

B:C<br />

Ratio<br />

RWUE<br />

(Kg<br />

ha -1<br />

mm -1 )<br />

0 kg N ha -1 –control 7.72 16.23 5.77 15.72 24595 3892 1.16 12.86<br />

25 kg N ha -1 –urea 8.65 18.07 7.60 20.62 24916 6944 1.28 14.41<br />

50 kg N ha -1 –urea 10.97 25.75 9.30 23.86 25238 16608 1.66 18.29<br />

25 kg N ha -1 –CR 9.28 19.48 8.11 20.62 28762 5469 1.19 15.46<br />

25 kg N ha -1 –FYM 10.29 21.53 9.03 22.38 31174 6748 1.22 17.14<br />

25 kg N ha -1 -CR +25 kg N ha -1<br />

–urea<br />

25 kg N ha -1 - FYM +25 kg N ha -<br />

1<br />

urea<br />

25 kg N ha -1 –CR +25 kg N ha -1<br />

–Leucaena loppings<br />

14.58 30.61 10.86 25.92 29083 24705 1.85 24.29<br />

19.25 40.42 12.84 28.21 31495 39525 2.25 32.08<br />

18.23 38.28 12.15 27.34 31967 35289 2.10 30.38<br />

25 kg N ha -1 -Leucaena loppings 8.61 18.09 8.23 20.30 27800 3983 1.14 14.36<br />

25 kg N ha -1 -Leucaena 12.26 25.76 10.80 24.54 28121 17130 1.61 20.44<br />

566 | Page

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