PHENOLOGY AND YIELD OF SUNFLOWER (HELIANTHUS ANNUUS L) HYBRIDS AS AFFECTED BY VARYING PLANT SPACING AND NITROGEN LEVELS UNDER SEMI ARID CONDITIONS OF SARGODHA, PUNJAB. Pakistan Journal of Science, [S. l.], v. 64, n. 2, 2022. DOI: 10.57041/vol64iss2pp%p. Disponível em: https://paas-pk.org/index.php/pjs/article/view/496. Acesso em: 16 feb. 2026.