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International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad control plot. Progressively, it was increased (4244, 5470 kg ha -1 ) in treatment T1receiving suboptimal fertilizer dose 50% NPK. The results also indicated that even if 50% NPK of the recommended optimal dose was applied was found much more beneficial in comparison to the application of imbalanced nutrient application. Similarly, it was also found that 100% N treatment (T7) resulted in 1779 and 5350 kg ha -1 grain and straw yield of wheat. It was progressively increased when P and Knutrients were included in fertilizer schedule. Reference Chaudhari, S.K., Biswas, P.P. and Kapil, H. 2020. Soil Health and Fertility. In the Soils of India. Springer. 215-231. T4-46P-1618 Studies on Effect of NPK, Bulb Size and Spacing on Yield of Pran (Top Onion) under Temperate Rainfed Conditions Tahir Saleem, Tariq Sultan, Nazir Ahmad Mir and H.A. Malik Krishi Vigyan Kendra Bandipora, SKUAST Kashmir (J&K)-193502 Pran (Allium x cornutumClementi ex Visiani) is a triploid viviparous species of genus Allium, extensively grown in Kashmir from times immemorial (Singh et al., 1967, Klaas and Friesen 2002). Pran is a cool season spice crop which grows well in mild climatic conditions. Being a long duration, rainfed and less labour intensive, this crop is cultivated on lofty hills where irrigation facilities seldom exist. It is more cold-hardy than onion and tolerates frost to a greater extent. Pran is traditionally cultivated in Kashmir and it is very popular as a spice and condiment due to its tasty bulbs and leaves. It is highly relished in Kashmiri kitchens in the preparation of soups, meat and salads. In the absence of scientific information with regard to appropriate nutrient dosage, spacing and bulb size for propagation in pran, it is difficult to reckon and realize the objective of higher yield. The present investigation was carried out to find the appropriate nutrient dose, bulb size and spacing for yield maximization in Pran. Methodology The experiment was conducted in two successive years and laid out in random block design with 27 treatments and 3 replications as detailed below. Three factors viz., NPK, spacing and bulb size were taken for evaluation, each at three different levels forming 27 treatment combinations. Sustainable soil management for resilient rainfed agro-ecosystem: conservation agriculture, organic farming, INM, soil-microorganisms-plant interactions 549 | Page
International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad No. of levels 1 II III NPK F 1:80:60:40 Kgha -1 F 2:100:80:60 Kgha -1 F 3:120:100:80NPK Kgha -1 Spacing S 1:20 cm x 10 cm S 2: 20 cm x 15 cm S 3:20 cm x 20 cm Bulb Size B 1 : Small(2.5-5.0 g) B 2: Medium (5.1-7.5g) Large (7.6-10 g) Observations were recorded on various growth, yield and quality attributes of top onion. Ten competitive plants were selected at random from each treatment and tagged for recording observations. Mean values for all the characters were worked out. The bulbs obtained from uprooting ten randomly selected plants were weighed expressed as bulb weight per plant in grams for all the treatment combinations in all the replications. The bulb yield per hectare was computed based on bulb yield per plot and expressed in tonnes per hectare. Results The study showed that maximum fresh bulb weight of 16.44 g was registered in treatment combination F3B3S3 (120:100:80 NPK kg ha-1 + 7.6-10.0 g bulb size and 20 x 20 cm spacing) after pooling the two-year data. This was followed by treatment combination F3B2S3 (120:100:80 NPK kg ha-1 + 5.1-7.5g bulb size and 20 x 20 cm spacing) which registered the fresh bulb weight of 16.34 g in pooled analysis. Lowest fresh bulb weight of 8.04 g was registered in treatment combination F1B1S1. Maximum fresh yield of 37.72 t ha -1 was registered in treatment combination F2B2S2 after pooling the two-year data. This was followed by treatment combination F2B3S2 which registered the fresh yield of 37.70 t ha-1 in pooled analysis. Lowest fresh yield of 28.03 t ha-1 was registered in treatment combination F1B1S1. Number of bulbs per plant, bulb length, bulb diameter, fresh bulb weight and fresh weight of bulbs per plant were significantly increased by using medium weight and large bulb weight in both seasons. This could be a result of the positive effect of available food reserves in large bulbs, which might have improved crop establishment and consequently increased growth characters and subsequently yield attributes like number of bulbs per plant, bulb length, bulb diameter, fresh bulb weight and fresh weight of bulbs per plant. Bulb size is related to planting density and smaller bulbs are formed at closer spacing. Close spacing of individual plants suffer much from competition and the crop may be improved in too wide spacing; however, the yield per hectares may be reduced because of reduction in plant number. The results are in accordance with findings of Faheema et al. (2009) Hussain et al. (2001) 550 | Page Sustainable soil management for resilient rainfed agro-ecosystem: conservation agriculture, organic farming, INM, soilmicroorganisms-plant interactions
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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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Theme- 6 Institutional and policy i
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