Knowledge grows in South Africa
Hot chilli virus diseases Chillies are just as susceptible to the know viruses as tomatoes. The most common known virus is tobacco mosaic virus, tomato spotted wilt virus and potato virus group X and group Y. You cannot control or spray for a virus. There are no chemicals that can kill viruses on a large…
Pest and diseases of pigeon peas Pests The biggest threat to pigeon peas are gram caterpillar, the red gram plume moth and the gram pod fly. There are no effective control methods against these pests. Thrips cause premature flower drop but there are chemicals that can control them. The caterpillar of the spotted borer can…
Virus diseases of green beans Virus diseases of green beans is a problem in the open field. As viruses cannot move by themselves, they need a host or vector to hitch a ride. Two main methods of transportation or distribution are insects and humans. Insects are the most difficult to control and are also the…
