Response of phosphorus in sesame (Sesamum indicum L.) on coarse textured soils of South West Haryana

A field experiment was carried out on coarse textured medium phosphorus status soil of CCS HAU Regional Research Station, Bawal (Haryana) at three different locations during Kharif 2015 to 2017. The experiment was laid out in randomized block design with three replications. There were five graded levels of phosphorus application viz., 0, 10, 20, 30, and 40 kg P2O5 ha-1. The results revealed that sesame cv. HT- 1 seed yield increased significantly with application of 20 kg P2O5/ha. The increase in mean seed and stalk yield was 6.06, 13.17, 15.38 and 18.04 per cent and 6.20, 14.28, 17.62 and 19.85 per cent due to application of 0, 10, 20, 30 and 40 kg P2O5/ha, respectively over control. The mean P-uptake was also increased with P application. The mean P-use efficiency varied from 14.12 to 20.30 per cent being maximum (20.30%) with application of 20 kg P2O5/ha. The mean post-harvest available P status was 9.90, 11.30, 12.68, 13.52 and 14.08 kg ha-1 at 0, 10, 20, 30 and 40 P2O5/ha, respectively. The mean economic data analysis revealed that benefit cost ratio was also increased in the tune of 1.06, 1.11, 1.17, 1.18 and 1.19 with the application of 0, 10, 20, 30 and 40 kg P2O5/ha, respectively. The findings of this study concluded that the application of 20 kg P2O5 ha-1 found to be optimum for the cultivation of sesame crop on coarse textured medium phosphorus status soils of south-west Haryana.