Book of Extended summaries ISDA

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities
during 22-24, December 2022 at ICAR-CRIDA, Hyderabad
Tillage practices
Effect of tillage and nutrient management practices on yield performance of DSR
Treatment
No. of
panicles/ m 2
No. of grains/
panicle
Grain yield
(q/ha)
Straw yield
(q/ha)
Harvest
Index (%)
T1: Conventional tillage 201 107 39.50 59.25 39.86
T2: Zero tillage 220 115 43.51 62.87 40.89
T3: Zero tillage + Residue 239 122 45.04 64.74 41.05
SEm± 6 2 0.64 1.05 0.51
LSD (p =0.05) 23 9 2.51 4.11 NS
Nutrient management
N1: RDF 212 111 39.16 59.65 39.52
N2: SSNM based on Nutrient Expert 228 119 45.00 64.26 41.25
N3: 60%N+GSGN+100 % PK of RDF 219 114 43.89 62.94 41.04
SEm± 4 2 1.19 1.18 0.87
LSD (p=0.05) 12 6 3.65 3.63 NS
LSD (p=0.05) (T x NM) NS NS NS NS NS
Effect of tillage and nutrient management practices on total uptake (grain + straw) of
N, P, K, Zn, Fe, Cu and Mn by direct seeded rice (DSR)
Treatment N P K Zn Fe Cu Mn
Tillage practices (kg/ha) (g/ha)
T1: Conventional tillage 76.76 22.20 92.23 278.32 448.50 44.16 318.85
T2: Zero tillage 83.85 24.32 96.60 298.37 484.42 50.36 339.53
T3: Zero tillage + Residue 86.71 24.62 99.99 305.14 489.57 54.79 345.94
SEm± 1.38 0.23 0.83 2.48 6.50 1.36 4.99
LSD (p =0.05) 5.42 0.92 3.25 9.74 25.53 5.36 19.61
Nutrient management
N1: RDF 76.09 22.17 90.36 286.54 459.22 46.88 328.08
N2: SSNM based on Nutrient Expert 87.38 24.77 99.51 296.67 485.10 52.84 340.52
N3: 60%N+GSGN+100 % PK of RDF 83.85 24.19 98.95 298.63 478.17 49.60 335.72
SEm± 2.08 0.49 1.62 5.12 9.50 1.54 6.99
LSD (p=0.05) 6.42 1.50 5.00 NS NS NS NS
LSD (p=0.05) (T x NM) NS NS NS NS NS NS NS
Conclusion
In a nutshell, the results of this study indicated that direct seeding of Kharif rice under zero tillage +
residue management practice coupled with SSNM based on Nutrient Expert led to improved growth
parameters, yield attributes, crop yields, and nutrient uptake by the crop.
686 | Page Resource conservation and rainfed agriculture