INHIBITORY EFFECT OF MEDIATIONAL BOTANICAL EXTRACTS AGAINST ROOT ROT OF MUSKMELON CAUSED BY PHYTOPHTHORA DRECHSLERI (TUCKER)
Department of Plant Pathology, University College of Agriculture, University of Sargodha, Pakistan
Phytophthora drechsleri (Tucker) causing root rot of muskmelon is a threatening pathogen in Pakistan. Non-chemical control based on the use of plant extracts are considered the best alternatives of noxious chemical pesticides as they are considered to be eco-friendly with no or minimal residual effects. The results of all tested botanicals suppressed the mycelial growth of pathogen. Extract of garlic (Allium sativum) showed maximum (86.5%) mycelial growth inhibition of root rot pathogen, followed by parthenium (Parthenium hysterophorus) (82.8%) and datura (Datura stramonium) (82%) at 30% concentration, while minimum inhibition was shown by Aak (Calatropis procera) (42.8%). These results suggested that plant extracts can be used as an alternative to chemicals for the management of root rot of muskmelon.