“SUSCEPTIBILITY OF SOME COWPEA (VIGNA UNGUICULATA (L) WALP) VARIETIES TO PERIOD OF WEED INTERFERENCE IN THE SOUTHERN GUINEA SAVANNA OF NIGERIA”. FUDMA Journal of Agriculture and Agricultural Technology, vol. 7, no. 2, June 2022, pp. 1-10, https://doi.org/10.33003/jaat.2021.0702.041.