A network that helps people worldwide obtain rapid advice and information on crop protection, including the identification and management of plant pests.
PestNet is a network that helps people worldwide obtain rapid advice and information on crop protection, including the identification and management of plant pests. It started in 1999. Anyone with an interest in plant protection is welcome to join. PestNet is free and is moderated, ensuring that messages are confined to plant protection.
March 2009. The problem of gall mites on sweet potato vines is spreading in gardens throughout the highlands of Papua New Guinea. It is becoming a common problem, although it appears to be variety specific. Comments were requested on the mite and its management.
In reponse, it was said that the Eriophyes mite injects chemicals into the plant leaves when feeding. It is microscopic which explains why farmers are not seeing it. Eggs are laid within the gall. There has been little research done on it and control methods usually recommended are growing non-susceptible varieties.
In the future, as PNG continues to develop its capacity to provide Pathogen Tested (PT) planting material it may be possible to reduce the effects of this pest. Currently, farmers are transfering the pest from garden to garden by use of infected planting materials. If farmers are able to obtain PT material they will reduce the spread.