SHARMA, J; GUPTA, H; PATLE, U. Effect of foliar spray of zinc and iron on the productivity of spring cowpea. Journal of Agriculture and Ecology, [S. l.], v. 22, p. 116–121, 2026. DOI: 10.58628/JAE-2622-115. Disponível em: https://saaer.org.in/journals/index.php/jae/article/view/1048. Acesso em: 1 oct. 2026.