Field experiment was conducted in rabbi season of 2016-17 at Research Farm of at AICRP on Integrated farming System. Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani entited "Effect of Organic, Inorganic and Integrated Nutrient Management on Soil Properties, Production and Economics of Onion Under Vertisol". The experiment was laid out on Vertisols with eight treatment combination, replicated three times in randomized block design. Application 50% recommended NPK +50% N trough FYM/crop residues/compost/other organic source + inorganic sources of micronutrient as per soil test the highest onion bulb yield (139.57 qt ha -1 ) and leaf strew yield (2.02 qt ha -1 ) was recorded by INM treatments. The growth parameters of onion plant height, number of leaves per plant significantly differed over inorganic and absolute control during crop growth period. Similarly, nutrient availability of N (183.56 kg ha -1 ), P (14.23 kg ha -1 ) and K (369.56 kg ha -1 ) was recorded of application of treatment 50% recommended NPK + 50% N trough FYM/crop residues/compost/other organic source + inorganic sources of micronutrient as per soil test than rest of the treatments. The bulk density was improved by application of organic and INM than inorganic and control treatments during the crop growth period. The results in respect of pH, EC and organic carbon showed significant variations among the treatments due to application of organic, inorganic and INM treatment.
A field experiment was conducted at experimental farm, AICRP on Integrated Farming Systems, Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani (M.S.) during kharif seasons of 2020-21 on to study the “Impact of high density planting and weed management practice on growth and yield of Bt. cotton. (Gossypium hirsutum L.)” Treatment consist of Twelve treatment combinations comprising Three planting densities in main plot that is (S1-120 cm x 45 cm (18518 plants ha-1), S2- 80 cm x 60 cm (20833 plants ha-1) and S3- 90 cm x 45 cm (24691plants ha-1) and four weed management practices that is W1 - Stale seedbed technique + PoE Pyrithiobac Sodium 10% EC @ 62.5 g ha-1 + Quizolfop-ethyl 5% EC @ 50 g ha-1 + Straw mulching, W2 - Stale seed bed technique +PoE Glufosinate ammonium 13.5% SL @ 0.7 kg ha-1 + Hand weeding, W3 - Weed Free and W4 - Weedy Check.
The mean maximum AGR for plant height were recorded under high density planting 90 cm x 45 cm. Among different growth intervals 61-90 DAS recorded maximum AGR for plant height (1.664 cm day-1 plant-1), while mean maximum AGR for dry matter (2.358 g day-1 plant-1) were recorded between 91-120 DAS under high density planting 120 cm x 45 cm. Among weed management practices, weed free treatment recorded mean maximum AGR for plant height (1.645 cm day-1 plant-1) 61-90 DAS interval, while mean maximum AGR for dry matter (2.441 g day-1 plant-1) were recorded between 91-120 DAS. The mean CGR, RGR and LAI were also maximum under weed free treatment.
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