Standardisation of seed priming technique to enhance the production of maize (Zea mays L.) under dryland conditions

Abstract

The effect of seed priming practices on growth, yield and economics of maize under rainfed conditions in south east Rajasthan on a clay loam soil was studied with various treatment seed priming treatments in kharif. Results reveals that, seed priming with KH2PO4 @2% for 6 hours recorded significantly higher maize grain yield (3059 kg ha-1) followed by with K2SO4 @2% (3025 kg ha-1) which were 24.15 and 22.75 percent higher over no priming (2464 kg ha-1), respectively . The net monitory returns under these treatments were also obtained higher (Rs 50542 ha-1 and Rs 50584 ha-1, respectively) with benefit cost ration (3.07 and 3.05, respectively). Similarly, KH2PO4 @2% recorded highest RWUE (5.036 kg grain ha-1 and Rs.69.75 ha-1 per mm rainfall). Seeds primed with KH2PO4 @ 2% for 6 hour was significantly increased plant height (8.7%), dry weight of plant (41.5%), number of grains per cob(15.5%), cob length (17.69%), grain weight per cob (19.05%) and test weight (12.6%) in comparison to no priming.