DESIGN OF SOLAR PHOTOVOLTAIC SYSTEM FOR UNDERGROUND IRRIGATION PUMPING WATER FOR THE AGRICULTURAL FARMLAND IN NATIONAL ROOT CROPS RESEARCH INSTITUTE, UMUDIKE (NRCRI), ABIA STATE, NIGERIA. (I. E. . Johnson, H. O. . Ozioko, I. C. Harryson, N. B. . Nduka, & E. E. . Eze, Trans.). (2025). Journal of Science and Technology, 30(10). https://doi.org/10.20428/jst.v30i10.3176