A review of bacterial wilt on groundnut in Guangdong Province, Peoples' Republic of China.
This disease, caused by Pseudomonas solanacearum, is severe and widespread in this Province, and yield losses of 15-20% are common in diseased fields. Rotation of groundnut with rice in lowland areas or in upland areas equipped with an irrigation system, or rotation with a non-host coupled with the use of resistant cultivars and herbicides in irrigated areas, is generally effective in reducing disease incidence in infested soils. Some new high-yielding resistant cultivars have been bred from exotic sources with high level resistance to wilt and other diseases. Some exotic sources, especially wild Arachis spp., provide a useful gene pool for combining with resistance genes to foliar diseases occurring in this area. This paper was presented at an ACIAR/ICRISAT collaborative research planning meeting on bacterial wilt of groundnut held at Genting Highlands, Malaysia 18-19 March, 1990.