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...

Iris yellow spot virus (IYSV; genus Tospovirus, family Bunyaviridae) is an important emerging pathogen of Alliums worldwide. During a tospovirus disease survey in July 2015, garlic and leek plants displaying suspected IYSV symptoms were found at 3 farms in Goromonzi, Mutasa, and Nyanga districts of ...

During the 2015 growing season, tunnel- and field-cultivated tomato (Solanum lycopersicum) crops in the Limpopo Province of the Republic of South Africa developed dark brown spots on the leaves that progressed to a burnt-like appearance. Symptoms began as necrotic spots at the base of young leaves...

In 2011, maize lethal necrosis (MLN) was reported from Bomet, Kenya, as a result of coinfection of maize with Maize chlorotic mottle virus (MCMV) (genus Machlomovirus) and Sugarcane mosaic virus (SCMV) (genus Potyvirus). MLN was later reported from other locations in Kenya and other African...

Leaf curl and yellow leaf curl are frequently affecting production of tomato (Solanum lycopersicum) in Burkina Faso, with an incidence of 60% in 1993. However, the specific begomoviruses associated with the disease had not been identified. In January and February 2009, severe leaf curl symptoms...

During a routine field survey of major tomato-producing areas of southwestern Nigeria in May/June 2013, tomato plants cv. Roma VF showing virus-like symptoms including stunting, chlorosis, and narrowing of leaf blades were observed in 10 farmers' fields with varying levels of incidence averaging...

Etiological studies of a recently emerged bushy top disease of tobacco in Ethiopia indicated that a ∼4.5-kb dsRNA from infected plants represents an umbravirus, whereas a smaller band (∼0.5 kb) is that of a new satellite RNA. Potato leafroll virus was also consistently associated with the disease....

In 2011 and 2012, several cucurbit-growing regions of Iran were surveyed and samples with symptoms similar to those induced by Cucurbit chlorotic yellows virus (CCYV) were collected. The pathogen was transmitted to cucumber and melon under greenhouse conditions by whiteflies (Bemisia tabaci)....

Insects represent a major group of vectors of Rice yellow mottle virus (RYMV). This study aimed at identifying the main entomofauna transmitting RYMV to rice crop in Benin. Therefore, the transmission ability of 13 insect species was tested during the rice vegetative stages. These species belong to ...

Maize provides an important source of forage for the maize-dairy farmers in Kenya. However, due to small farm size, maize cannot supply all the feed needed for dairy cattle and forage is in short supply in the dry seasons. This paper examines practices to increase the health and use of maize and...