GANGADHAR NANDA*
AICRP on Forage Crops and Utilization,
Dr. Rajendra Prasad Central Agricultural University, Pusa-818 425 (Bihar), India
*(e-mail: gnanda@rpcau.ac.in)
(Received : 8 September 2024; Accepted : 22 September 2024)
SUMMARY
During Rabi season of 2022-2023 a field study was conducted to examine how varying phosphorus levels affected performance of berseem genotypes. Six genotypes (PC-114, JB-08-17, JHB-20-1, JHB-20-2, Wardan and bundel berseem-3 (BB-3)) and three phosphorus levels (60, 80 and 100 kg P2O5/ha) with three replications were evaluated in the split plot design. Results indicated that the genotype BB-3 produced the best green forage yield (GFY) and gave the highest net return and B:C ratio among the genotypes. Similarly, GFY, dry matter yield and crude protein yield with 100 kg P2O5/ha were 8.3, 20.0 and 22.6%, respectively greater than those of 60 kg P2O5/ha and gave the highest net return. BB-3 and JHB-20-2 among genotypes and lower dose of P (60 kg P2O5/ha) recorded the highest phosphorus use efficiency. The P fertilizer rate for maximum yield and economical P fertilizer rate was found to be 101 and 97 kg/ha, respectively.
Key words: Berseem, P management, Economical P fertilizer rate, production economics and phosphorus use efficiency