O P LATHWAL and P S MALIK 2014. Evaluation of benefits of optimum sowing time on yield and economics of spring sunflower under frontline demonstrations: Evaluation of benefits of optimum sowing time on yield and economics of spring sunflower under frontline demonstrations. Journal of Oilseeds Research. 31, 1 (Jul. 2014). DOI:https://doi.org/10.56739/jor.v31i1.142122.