Effa, E. B., Uko, A. E., & Oseghale, E. I. (2025). Spatial dimensions and poultry manure rate effects on sweet corn (Zea mays L. saccharata Sturt.) varieties in Calabar. Journal Of Agriculture, Forestry & Environment , 5(1), 48-57. https://jafe.net.ng/index.php/home/article/view/52