1.
TEJ SINGH, HARBIR SINGH, BALDEV RAJ. Effect of genotype, irrigation and fertility on yield, nitrogen- recovery and its use efficiency in spring sunflower (Helianthus annuus). IJA [Internet]. 2001 Oct. 10 [cited 2026 Jun. 25];44(1):44_1 . Available from: https://pub.isa-india.in/index.php/ija/article/view/3481