Most farmers depend on tea as a cash crop and raising it is challenging due to pathogens and other factors which lower the vigour hence production of weak plantlets. Some Trichoderma species promote growth in a wide range of plant species by establishing robust and long-lasting colonization of the root surfaces penetrating into the epidermis and promote roots development; crop productivity and resistance to abiotic stresses. The objectives of this study were to investigate the effect of Trichoderma spp. isolates on development of roots and root biomass of ten selected clones. The Trichoderma...