During disease surveys conducted in September 2015 at 3 Zimbabwean farms in 3 districts, weeds in and near onion fields were found to have thrips feeding damage symptoms. Additionally, some weed leaves were chlorotic and deformed. Onion leaves and scapes had irregular, grey-to-bleached white...

In May 2015, a leaf curl disease was observed on tomato and Senna tora plants growing in District Ballia, Eastern Uttar Pradesh, India. The symptoms in S. tora plants consisted of leaf curl disease. The presence of whiteflies (Bemisia tabaci), the vector of begomoviruses, was also observed on the...

Pitch canker, caused by the pathogen Fusarium circinatum, is a serious disease of pines, Pinus species. It is a threat to natural and planted pine forests, and to date it has invaded countries across five continents. Pine-feeding insects can play a key role in the epidemiology of the disease, as...

Following the first identification of Tomato yellow leaf curl virus (TYLCV) in Shanghai, China in 2006, it has been reported from many provinces of China as one of the most important tomato pathogens. TYLCV is transmitted by whitefly Bemisia tabaci, while weed plants act as intermediate hosts and...

Scarlet aubergine (Solanum aethiopicum; also known as Ethiopian nightshade or Brazilian aubergine) originated in sub-Saharan Africa and is now grown in many parts of the world as a food, medicinal or ornamental crop, as well as for use as a rootstock for tomato and common aubergine (Solanum...

Taxonomy: Iris yellow spot virus (IYSV) is in the genus Tospovirus, family Bunyaviridae, with a single-stranded, tri-segmented RNA genome with an ambisense genome organization. Members of the other genera in the family infect predominantly vertebrates and insects. Geographical distribution: IYSV is ...

As weeds infected with 'Candidatus Liberibacter solanacearum' (CLso) could be reservoirs of the pathogen in the absence of crops, weeds surrounding tomato crops in Hawke's Bay (North Island) were monitored every 3 months for presence of tomato potato psyllid (TPP; Bactericera cockerelli) between...

Parthenium weed (Parthenium hysterophorus, Asteraceae) is a common, invasive weed found throughout the Indian subcontinent, Africa, America and Australia. The observed disease, Parthenium Witches' Broom (PWB), characterised by phylloidy, stunting and prolific branching was observed during a field...

Maize redness (MR), caused by stolbur phytoplasma (16SrXII-A, 'Candidatus Phytoplasma solani') and vectored by the cixiid planthopper Reptalus panzeri, is a severe and emerging disease of maize in southeastern Europe. Symptoms of MR include midrib, leaf, and stalk reddening, followed by desiccation ...

Cotton leaf curl virus (CLCuV) disease is crucial threat for cotton production in Pakistan. CLCuV belongs to genus Begomovirus of Geminiviridae family and is transmitted by Bemisia tabaci. Drastic reduction in yield was observed during 1994-95 and 2007-08 due to this disease. However in 1996-1997...