A. MEHNAJ THARRANUM, RAM SINGH, RAM NIWAS, NARESH KUMAR and SHALU RANI 2016. Thermal time requirements of ten genotypes of Brassica species at Hisar. Journal of Agrometeorology. 18, 1 (Jun. 2016), 131–133. DOI:https://doi.org/10.54386/jam.v18i1.916.