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International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad (Azotobactor and Azospirillum) at grand growth stage was higher in OF&NF followed by ICM whereas phosphorus solubilizers population was higher in ZBNF plots. Dehydrosenase and urease activity were higher in OF&NF. Acid phosphatase and alkaline phosphatase were higher in ICM. Earth worm population at different growth stages was higher in ZBNF. Similar studies by Singh and Srivastava, 2011 indicated that the highest enhancement in organic carbon content at ratoon harvest was recorded in the treatment receiving 100 per cent N through organic + biofertilizers + inter cropping of legume with rhizobium + pests/diseases control by either synthetic pesticides or biopesticides. Incidence of YLD was 2.82 per cent in ICM, 1.1 percent in OF and NF and 1.7 per cent in Palekar’s ZBNF. The cumulative incidence of ESB at 120 DAP was more in ICM followed by OF and NF while it was lowest in Palekars ZBNF. The incidence of INB was higher in Palekar’s ZBNF while it was lowest in ICM. Among three methods of cultivation higher tiller population, stalk population, yield attributes and yield were higher with ICM followed by OF and NF while the lowest cane yield) was recorded with Palekar’s ZBNF. Application of FYM, cane trash, pressmud, vermicompost and biocompost in combination with recommended inorganic fertilizers have recorded increased cane yield over inorganic fertilizer alone, besides improving the soil fertility and economizing the cane production (Shilpa et al., 2017). Conclusion From the mean data it can be interpreted that ICM gave the highest cane yield, sugar yield during both years in plant and ratoon crop as well as compared to OF and NF and Palekar’s ZBNF methods. Effect of Natural Farming on soil physicochemical properties in post harvest soils of Sugarcane Particulars Initial ICM NF & OF Mean of 2 years ZBNF pH 7.22 7.19 7.14 7.12 EC (dS/m) 0.27 0.245 0.232 0.211 OC (%) 0.61 0.61 0.64 0.64 Available Nitrogen (kg/ha) 188 207.5 213.75 196.87 Available Phosphorus (kg/ha) 72 77.25 76.32 74.41 Available Potassium (kg/ha) 223 234 234 223 Av. Zn (ppm) 0.97 0.89 0.89 0.85 Av. Cu (ppm) 2.32 2.94 2.52 2.58 Av. Mn (ppm) 14.58 15.49 16.44 13.92 Av. Fe (ppm) 10.15 12.92 13.61 13.50 649 | Page Resource conservation and rainfed agriculture
International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad Influence of natural farming on growth, yield, soil microbial and soil enzymatic activity of sugarcane Particulars ICM NF & OF ZBNF Mean Mean Mean Shoot population (240 DAP) 79795 72251.5 42929 Plant height (240 DAP) 240.7 193.835 152.75 LMC at Harvest(cm) 232.95 184.965 146.785 Avg. Cane Girth(cm) 2.47 2.525 2.41 Number of internodes/Cane 25.7 23.315 19.7 NMC per hectare 74621.5 68588 42583 Cane Yield(t/ha) 76.45 65.15 40.235 Intercrop (Greengram) yield-kg/ha -- -- 685.5 Cane equivalent yield 76.45 65.15 55.725 Brix (%) 20.9 20.995 20.325 Sucrose (%) 18.99 18.87 18.95 CCS (%) 14.655 14.425 13.8 Purity (%) 90.25 87.06 89.08 Sugar yield (t/ha) 11.32 9.45 7.68 Jaggery Recovery (%) 7.42 6.56 5.54 Jaggery Yield (t/ha) 5.72 4.24 2.74 Azatobactor (x 10 4 cfu/g soil) 5.5 5.0 6.5 Azospirillum (x 10 4 cfu/g soil) 8.0 3.0 7.0 Rhizobium (x 10 5 cfu/g soil) 2.5 0.0 2.0 Phosphorous solubilizers (x 10 4 cfu/g soil) 3.0 1.0 3.5 Dehydrosenase (µg TPF/g soil/day) 2.1 3.4 2.5 Urease (µg NH4+/5 g. soil/2 hr) 39.0 42.0 30.5 Acid Phosphatase (µg PNP/g. soil/hr) 55.0 44.0 38.0 Alkaline Phosphatase (µg PNP/g. soil/hr) 64.5 53.5 48.5 Yellow leaf disease 2.8 1.1 1.7 Ring spot 2.5 2.7 4.4 ESB (% DH) upto 120 DAP 6.6 5.5 2.3 Internode borer incidence (%) 24.4 49.0 41.0 650 | Page Resource conservation and rainfed agriculture
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Extended Summaries 22-24 December,
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Citation Rama Rao, C.A., Srinivasa
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Resilience through land and water m
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International Conference on Reimagi
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Theme- 2 Ecosystem based approaches
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