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International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad proportion) were laid along the field slope gradient. Strips were replicated five times in a randomised block design. Each strip was subdivided into 10 grids (along slope, N-S) and soil and crop measurements/samples were taken from the centroids of each grid, which were marked with gps (Fig. 1).Soil samples were analysed for soil texture, nitrogen, carbon and pH.Crops were sown at recommended seeding density: i.e. 320 plants per sq.m for SC oat, 80 plants per sq.m for SC pea and half the seeding density of each crop in the intercrops. All treatments were applied 50 kg/ha of mineral N fertiliser, without any irrigation and other agrochemicals. At maturity, plant samples from 1 sq.m were hand-harvested from all the centroids and oven-dried for estimating grain and biomass weights. Results The study site received only 30mm of precipitation during 01 May-01 August in 2018, which was about one-fourth of the average precipitation during this period. This affected the crops, specially the pea. At harvest, oat yield tended to be higher in areas with high soil ECa values (conductivity). Plot layout on ECa map; Dry matter oat grain yield in Kg/ha on soil N heat map. In areas with low soil N content, IC seemed to have advantage over SC in terms of oat yield. On the other hand, yields of IC treatments tended to be equal or lower than SC oat yield in areas with high soil N content (Fig. 2). Average oat grain yield from all sampling points in IC was 2.6±1.65 t/ha (mean ± SD), despite having only 50% of the sole crop density, compared to 3.07±2.24 t/ha in oat SC strips. This corresponds to about 78% of SC yield. The highest weed biomass of 5.86 t/ha was recorded in SC pea, while the lowest weed in SC Oat (0.97 t/ha). The IC treatment recorded a weed biomass of 3.27 t/ha. Emerging approaches (RS, AI, ML, Drones etc) for crop management &assessment 698 | Page
International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad Dry matter weed biomass at harvest in t/ha Treatment emmean SE df Lower. CL Upper. CL Group SC Oat 0.97 0.22 139 0.54 1.41 1 IC Oat-Pea 3.27 0.22 139 2.84 3.70 2 SC Pea 5.86 0.21 139 5.43 6.28 3 Conclusion Despite the pea crop failure due to drought, the oat yield in IC was about 78% of SC. IC reduced the vulnerability to weather extremes through complementarity function and crop diversification. High compensatory yield in IC inlow soil N areas may be attributed to compensation potential of intercrop partners. IC of oilseed rape and pea in a heterogeneous field is currently being tested by the authors. References Bertness M and Callaway RM. 1994. Positive interactions in communities. Trends Ecol. Evol. 9. Chongtham IR, Bergkvist G, Watson CA, Sandstrom E, Bengtsson J and Oborn I. 2016. Factors influencing crop rotation strategies on organic farms with different time periods since conversion to organic production. Biol. Agric. Hortic. 33, 14–27. Gliessman SR. 2014. Agroeoclogy: the ecology of sustainable food systems, CRC press. Jensen ES, Bedoussac L, Carlsson G, Etienne-Pascal J, Justes E and Hauggaard-Nielsen H. 2015. Enhancing yields in organic crop production by eco-functional intensification. Sustain. Agric. Res., 4 (3), 42-50. T5-02O-1343 Performance of Soybean, Pigeonpea Strip Cropping under Complete Mechanization for Rainfed Area of Marathwada Region W. N. Narkhede, B. V. Asewar, M. S. Pendke, R. S. Raut, D. P. Waskar and A. S. Gunjkar All India Coordinated Research Project for Dryland Agriculture, Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani (Maharashtra) India 431 402 Strip cropping is a form of intercropping in which different crop species are cultivated in adjacent strips, allowing for independent, mechanical cultivation of each species. The strips are wide enough to be managed independently, yet they are narrow enough to allow crops that are rotated annually to influence the micro climate and yield potential of adjacent crops (Van 1994). Strip intercropping can bring important agronomic and environmental benefits. 699 | Page Emerging approaches (RS, AI, ML, Drones etc) for crop management &assessment
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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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Resource conservation and rainfed a
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Theme- 6 Institutional and policy i
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