“Effect of method of weed control and insecticide (Lambda-cyhalothrin) rates on the productivity of cowpea (Vigna unguiculata (L) Walp) in a Southern Guinea Savanna of Nigeria” (2018) Tropical Agriculture, 95(3). Available at: https://journals.sta.uwi.edu/ojs/index.php/ta/article/view/5383 (Accessed: 10 September 2024).