Major Pests & Damage
Root Knot Nematodes
(Meloidogyne spp.)
Root symptoms induced by root-knot cause swollen areas (galls) on the roots of infected plants. Gall size may range from a few spherical swellings to extensive areas of elongated, convoluted, tumorous swellings that result from exposure to multiple and repeated infections.
Yellow Vein Mosaic Viruses
(Monopartite Begomovirus)
Yellowing of the entire network of veins in the leaf blade is the characteristic symptom. In severe infections the younger leaves turn yellow, become reduced in size and the plant is highly stunted. The veins of the leaves will be cleared by the virus and interveinal area becomes completely yellow or white.
Wilt
(Fusarium oxysporum f.sp. vasinfectum)
The affected plants are stunted. The leaves turn yellow, wilt and are later shed. Usually the lower leaves are the first affected. When a stem or the main root is cut crosswise, brown discoloration is usually found in the ring just beneath the bark.
Root Rot
(Macrophomina phaseolina)
The leaves of infected plants became yellow and wilting, and roots of infected plants were brown. As the disease progressed, entire shoots and branches turned brown and died.
