PARVENDER SHEORAN, VIRENDRA SARDANA, R. K. BAJAJ. Phenophasic model based on growing degree days for sunflower crop in Punjab region. J. Agrometeorol. [Internet]. 2008 Dec. 1 [cited 2024 Nov. 12];10(2):233-5. Available from: https://journal.agrimetassociation.org/index.php/jam/article/view/1213