Year: 2016 | Month: December | Volume 9 | Issue 6
Effect of phosphorus and biofertilizers on phosphorus use efficiency, biological N-Fixation and yield of pigeonpea (Cajanus cajan L.)
Abstract:
A field experiment was conducted during rainy seasons of 2013-14 and 2014-15 at the Rajola Krishi Research Farm, Faculty of Agricultural Sciences, Mahatma Gandhi Chitrakoot Gramodaya Vishwa Vidyalaya, Chitrakoot – Satna, Madhya Pradesh, India to study the effect of phosphorus and biofertilizers on phosphorus use efficiency (PUE) and biological N-fixation (BNF) yield of pigeonpea (Cajanus cajan L.) variety UPAS-120. The agronomical and physiological PUE and its recovery were found significantly higher (10.40, 44.83 and 13.09 respectively) under the lowest level of phosphorus (P30). The reserve was true in case of P90. Dual biofertilizers (Rhizobium + PSB) gave significantly higher physiological PUE over single biofertilizer; where as agronomical PUE and recovery were found identical. Application of phosphorus up to 90 kg P2O5/ha gave maximum grain yield (16.06 q/ha). The dual biofertilizers also gave maximum yield up to 15.56 q/ha. The BNF was highest in these treatments. Hence the N-balance in soil was maximum (230 kg/ha).
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