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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, K.K.
Sarawgi, S.K.
MIshra, V.N.
Lakhera, M.L.
Chandrakar, B.L.
 
Subject PHOSPHORUS,SOYBEAN-WHEAT,VERTISOLS,CHHATTISGARH
Agronomy
 
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 2016-11-30T14:29:56Z
2016-11-30T14:29:56Z
2007
 
Type Thesis
 
Identifier 271 p.
http://krishikosh.egranth.ac.in/handle/1/88426
 
Language en
 
Format application/pdf
 
Publisher Indira Gandhi Krishi Vishwavidyalaya Raipur