Joseph Kimutai Langat. 2018. “Photosynthetically Active Radiation to Total Solar Radiation Top Canopy Ratio in Tea (Camellia Sinensis [L.] O. Kuntze) Genotypes in the Kenyan Highlands”. International Journal of Advances in Scientific Research and Engineering (IJASRE), ISSN:2454-8006, DOI: 10.31695/IJASRE 4 (5):118-28. https://doi.org/10.31695/IJASRE.2018.32726.