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International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad Effect of treatments on growth and yield of maize Treatment SPAD LAI 100-seed weight (g) Grain yield (kg/ha) N 0PKZn 0 19.8 2.96 25.2 835 NPKZn 0 40.2 5.08 26.3 2589 N 0PKZn 21.7 3.33 25.3 909 N 50PKZn 31.9 3.91 26.2 1693 N 75PKZn 36.3 4.80 26.8 2241 N 100PKZn 40.7 5.20 26.8 2694 N 0PKZn + Nano-N 22.2 3.43 25.4 1227 N 50PKZn + Nano-N 34.8 4.12 26.8 2218 N 75PKZn + Nano-N 40.0 5.10 27.0 2801 N 100PKZn + Nano-N 42.0 5.25 28.2 3009 N 0PK + Nano-Zn 24.7 3.30 25.4 1036 N 50PK + Nano-Zn 32.6 3.92 26.2 1758 N 75PK + Nano-Zn 36.7 4.84 27.0 2385 N 100PK + Nano-Zn 40.9 5.12 27.2 2896 N 0PK + Nano-N + Nano-Zn 28.3 3.50 25.9 1359 N 50PK + Nano-N + Nano-Zn 35.3 4.16 26.9 2350 N 75PK + Nano-N + Nano-Zn 40.6 5.13 27.2 2920 N 100PK + Nano-N + Nano-Zn 42.7 5.18 28.4 3299 N 100PK + Nano-Cu 40.1 5.00 26.8 2603 N 100PK + Nano-N + Nano-Zn + Nano-Cu 41.8 5.31 28.6 3308 LSD (p=0.05) 3.6 0.52 0.7 253 Conclusion Application of recommended NPK + foliar spray of nano-urea + nano-Zn + nano-Cu being on par with recommended NPK + foliar spray of nano-urea + nano-Zn recorded significantly higher grain yield (3308 kg/ha) compared to other treatments. References Kumar A, Singh K, Verma P, Singh O, Panwar A, Singh T, Kumar Y and Raliya R. 2022. Effect of nitrogen and zinc nanofertilizer with the organic farming practices on cereal and oilseed crops. Sci. Rep., 12:6938. Emerging approaches (RS, AI, ML, Drones etc) for crop management &assessment 726 | Page
International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad T5-12P-1051 Evaluation of Horse Gram Grain for Bio-Accessibility of Iron and Zinc by in-vitro Method K. Sreedevi Shankar 1* , Basudeb Sarkar 1 , Asma Siddiqua 1 , M. Shankar 2 and V. K. Singh 1 1 ICAR-Central Research Institute for Dryland Agriculture, Hyderabad-500059, Telangana, India; 2 Professor Jayashankar Telangana State Agricultural University, Hyderabad-500030, India. * k.sreedevishankar@icar.gov.in Horse gram (Macrotyloma uniflorum) is one of the lesser known legumes of the tropics and subtropics, grown mostly under dryland conditions. Horse gram is an excellent source of iron and zinc, and is commonly consumed in India by farming community and lowincome groups. Four genotypes of horse gram were evaluated for their iron and zinc contents and their bio-accessibility measured through invitro dialyzability. The horse gram seeds have relatively higher trypsin inhibitor, hemagglutinin activities and natural phenols than most bean seeds. The most reliable method for determining bio-availability of iron from diets is to measure iron absorption. An invitro method, on the other hand has several advantages for rapid screening and testing of bio-availability of iron from diets consumed and suggest improvements in the diets so as to increase availability of iron from the legume. Methodology The grain samples from four genotypes of horse gram (16 K CRIDA – 18R, 16 K CRIDA – 22, 16 K CRIDA – 19 and 16 K CRIDA – 4) were taken up for the study. Bio-accessibility of iron and zinc from horse gram samples were determined by an invitro method described by Narasinga Rao and Prabhavathi (1978). The grain samples were extracted with pepsin-HCl at pH 1.35 and subsequently the pH was adjusted to pH 7.5 and iron and zinc were estimated by the AAS method. Calcium content and the metallic cations were determined through the diacid method using AAS. The phytic acid from horse gram samples were determined. The crude fiber was estimated by using ANKOM fibre bag system. The Physico-chemical and hydration/cooking characteristics of horse gram i.e., hydration capacity, hydration index, swelling capacity, swelling index, cooking time (min) and 100-seed weight were also estimated. All the samples were analysed in triplicate. Results The percent bio-accessibility of iron at pH 7.5 (7.23%) was found higher with 16 K CRIDA – 18R. The bio-accessibility of zinc was significantly higher (32.21%) in genotype 16 K CRHG – 22. Significantly high content (213.00 mg/100 g) of phytic acid was observed in 16 K CRHG – 4. The calcium content was significantly higher (120.16 mg/100 g) in 16 K CRHG – 19. The 727 | Page Emerging approaches (RS, AI, ML, Drones etc) for crop management &assessment
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Extended Summaries 22-24 December,
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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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