Direct and Residual Effect of Phosphorus Rich Organic Manure on Phosphorous Mobility: It’s Use Efficiency and Sustainability in Cluster Bean- Wheat Cropping Sequence in Loamy Sand Alkali Soil of Rajasthan
Effect of PROM on phosphorous mobility
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Authors
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P C Bairwa
Rajasthan Agricultural Research Institute, (S.K.N. Agriculture, University) Durgapura Jaipur 302018 (Rajasthan), India
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R Sammauria
Rajasthan Agricultural Research Institute, (S.K.N. Agriculture, University) Durgapura Jaipur 302018 (Rajasthan), India
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K C Gupta
Rajasthan Agricultural Research Institute, (S.K.N. Agriculture, University) Durgapura Jaipur 302018 (Rajasthan), India
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Pratibha Singh
Rajasthan Agricultural Research Institute, (S.K.N. Agriculture, University) Durgapura Jaipur 302018 (Rajasthan), India
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O P Meena
Rajasthan Agricultural Research Institute, (S.K.N. Agriculture, University) Durgapura Jaipur 302018 (Rajasthan), India
Keywords:
P mobility, PROM, P uptake, P use efficiency, Sustainability yield indexAbstract
A field experiment was conducted at Rajasthan Agricultural Research Institute, Durgapura, Jaipur, during 2013 to 2016 to study the effect of phosphorous rich organic manure (PROM) in cluster bean-wheat cropping sequence. Six level of PROM viz. 1, 1.5, 2, 2.5, 3 and 3.5 Mg ha-1 along with recommended dose of N and K were applied in RBD with three replications. Recommended dose (RD) of NPK and absolute control (without fertilizer) were also included for comparison. Highest availability of Olsen-P was recorded at 40 and 60 days after sowing (DAS) in treatment having recommended dose of NPK (T2), while, at 90 DAS and harvesting of cluster bean crop it was observed under treatment RD of NK plus 3.5 Mg ha-1 PROM (T8). However, in succeeding wheat crop it was recorded maximum under T2 at all the growth stages and harvesting of wheat crop. Highest P use efficiency was found in T2 (13 and 15 %) while, in P levels it was recorded in treatment RD of NK plus 1 Mg ha-1 PROM (5.25 and 6.25 %) in cluster bean and wheat, respectively. Highest P balance (83 kg ha-1), relative agronomic efficiency and sustainability yield index (0.69) were recorded under T8.
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References
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