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DIRECT, RESIDUAL AND CUMULATIVE EFFECT OF LEVELS AND SPLIT APPLICATION OF PHOSPHORUS IN SOYBEAN-WHEAT CROPPING SYSTEM IN VERTISOLS OF CHHATTISGARH

KrishiKosh

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Title DIRECT, RESIDUAL AND CUMULATIVE EFFECT OF LEVELS AND SPLIT APPLICATION OF PHOSPHORUS IN SOYBEAN-WHEAT CROPPING SYSTEM IN VERTISOLS OF CHHATTISGARH
 
Creator Mahobia, Rishi Kumar
 
Contributor Purohit, Dr. K.K.
Sarawgi, Dr. S.K.
Mishra, Dr. V.N.
Lakhera, Dr. M.L.
Chandrakar, Dr. B.L.
 
Subject crops, yields, application methods, planting, soybeans, wheats, productivity, farmyard manure, fertilizers, harvesting
 
Description The present investigation, “Direct, residual and cumulative effect of levels and split application of phosphorus in soybean-wheat cropping system in Vertisols of Chhattisgarh”, was carried out at Instructional Farm, IGKV, Raipur, C.G. during kharif and rabi seasons of 2005-06 and 2006-07. The soil of the experimental field was clayey in texture (Vertisols) with low nitrogen, medium phosphorus and organic carbon and high potassium. During Kharif 2005 and 2006 soybean cv. JS-335 was taken and wheat was used as test crop for Rabi season, respectively. Ten treatments consisting two main plots of phosphorus levels (40 kg and 60 kg P2O5 ha-1) and five sub plots of time and method of phosphorus management (broadcast, drilling, Two splits (50% basal as drilling + 50% side dressing at 30 DAS), Two splits (50% basal as drilling after blending with FYM + 50% side dressing at 30 DAS after blending with FYM) and three splits (50 % basal as drilling + 25% side dressing at 30 DAS+ 25% side dressing as 50 DAS)) were laid out in split plot design with three replications. In succeeding rabi season during 2005-06 and 2006-07, the residual effect of kharif treatments (main plots and sub plots) and direct application of three phosphorus levels viz. 0, 30 and 60 kg P2O5 ha-1 were studied, adopting split-split plot design with three replications.
The results revealed that P level of 60 kg P2O5 ha-1 and two splits of P application (blended with FYM) produced significantly higher growth parameters viz., plant height, number of branches plant-1, number and dry weight of nodules, dry matter accumulation, C.G.R., R.G.R, leaf area and leaf area index of soybean. Application of 60 kg P2O5 ha-1 and two splits (with or without blending) during both the years produced higher seed and straw yield, harvest index, PRI, PE, gross return, net return, B: C ratio. Return Re-1 investment on P fertilizer was higher under P applied with 40 P2O5 ha-1 and two splits (with or without blending) or drilling of P. Two splits without blending registered higher energy parameters; however, it was comparable with two splits (blended with FYM). Factor productivity and recovery efficiency was higher under 60 P2O5 ha-1 but agronomic and physiological efficiency was found higher under 40 P2O5 ha-1. Phosphorus applied as two splits (with or without blending) registered significantly higher factor productivity, agronomic, physiological, and recovery efficiency. Available N and P at both the depth of soil were higher under 60 kg P2O5 ha-1 and two splits (with blending). N and P content and their uptake in grain, straw and total as well as protein content and yield were found maximum under application of 60 kg P2O5 ha-1 and two splits of blended phosphorus. All the fractions of P increased with
increasing levels of P, but have no definite trend for P fractions, sum of inorganic-P and organic-P under P levels and its time and method of application. However, a general trend was obtained as: Saloid bound-P
 
Date 2016-02-10T14:15:40Z
2016-02-10T14:15:40Z
2007
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/64284
 
Language en
 
Format application/pdf
 
Publisher Indira Gandhi Krishi Vishwavidyalaya, Raipur