Ralstonia pseudosolanacearum is reported for the first time from the Lao PDR. Typical symptoms of wilt and vascular exudate were observed in potatoes and tomatoes in Paksong district, Champasak province. Pathogenicity was proven and identification was based on symptoms, commercial diagnostic test kits and sequence of the egl gene.
Phytophthora capsici is reported for the first time in the Lao PDR. It was isolated from soil collected from the root zone of wilting red chilli (Capsicum annuum) plants in a polyhouse farm in Paksong district of Champasak province. The wilting chilli plants had typical symptoms of infection by P. capsici including root rot and necrosis of the outer cortex… (More)
Fusarium oxysporum f.sp. niveum is reported for the first time in the Lao PDR. It was isolated from watermelons (Citrullus lanatus) in Songkhon district, Savannahkhet province following a limited ad hoc survey during January and February of 2015. Infected plants showed symptoms of wilt, vascular discolouration, necrosis in the collar region, lower stem base… (More)
Rhizoctonia solani anastomosis group AG-4 HG-I is reported for the first time from the Lao PDR. It was isolated from gai lan (Brassica oleracea var. alboglabra) affected by collar rot, seedling death, root rot and stunting of older plants from the Paksong area of Champasak province. The anastomosis group was confirmed by sequencing and Koch’s postulates… (More)