Productive potential of pigeonpea [Cajanus cajan (L.) Millsp.] genotypes in different planting geometry under protective irrigation

A field experiment was conducted at Agricultural Research Station, Malnoor, University of Agricultural Sciences, Raichur on vertisols during kharif seasons of 2010–11 and 2011–12 to study the productive potential of pigeonpea genotypes in different planting geometry under protective irrigation. The experiment consisted of three genotypes (BSMR-736, TS-3R and Laksmi) and seven planting geometry (90 x 20 cm, 120 x20 cm, 120 x 60 cm, 120 x 90 cm, 150 x 20 cm, 150 x 60 cm and 150 x 90 cm). The experiment was conducted in split plot design with three replications. Results revealed that among three genotypes tested, BSMR-736 (1667 kg/ha) recorded significantly higher grain yield over Laksmi (1369 kg/ha) and TS-3R (823 kg/ha). With respect to planting geometry, 90 x 20 cm, 120x20 cm and 150x20 cm recorded the highest grain yield, net returns and B: C irrespective of the genotypes. The interaction between genotypes and planting geometry showed that the genotype BSMR-736 planted at 150X20 cm recorded the highest grain yield (2322 kg/ha), net returns (Rs. 64421/ha) and B: C (4.37).