In 1973-2011 in Poznań, aphid catches were carried out using Johnson's suction trap. Since then the suction trap located at the Institute of Plant Protection - National Research Institute in Poznań has continuously recorded the daily and seasonal dynamics of aphid flights. The collected results has ...

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...

The diversity of thrips in east Africa is quiet obscure. Climatic changes, extensive commodity exchanges and urban influences, however, lead to significant shifting of this diversity of thrips. Invasive, adaptive and highly reproductive thrips species impact significantly on agricultural production ...

An investigation of invasive and alien mites and insects was carried out, based mainly on pests of agriculture, forestry and ornamental plants. A total of 17 alien species of mite were found in Serbia during 1979-2004. More than 60% of the alien mite species were recorded for the first time during...

A field study conducted on maize plants growing in three different conditions (one or two rows cultivated along the walls of houses in working-class districts of Yaoundé, Cameroon; vacant lots of the city that we call "urban gardens"; and an experimental field outside the city) revealed that the...

To determine the presence of Fusarium graminearum [Gibberella zeae] on wheat midges (Sitodiplosis mosellana), adult females were captured from a spring wheat (Triticum aestivum) field near Quebec City (Canada) and plated on potato dextrose agar. A mouth aspirator was used to capture live midges in...

Maize streak, incited by maize streak monogeminivirus (MSV), is a major disease limiting maize (Zea mays) production over widespread areas of Africa. To understand the genetic basis of tolerance to MSV, recombinant inbred lines (RILs) derived from the cross of the MSV tolerant inbred Tzi4 with the...

During 1996-97, a collection of accessions of several wild rice species were screened for resistance to rice grassy stunt tenuivirus RGSV-2 strain using the standard mass screening cage method. Several accessions, which showed low visual scores, were further evaluated using ELISA. Based on ELISA...

A new disease of wheat and maize caused by the High Plains virus (HPV) has been observed in the High Plains region of the western United States. HPV is transmitted by the wheat curl mite, Aceria tosichella, which is also the vector of wheat streak mosaic rymovirus (WSMV). In the field it is...

The ability of the Russian wheat aphid (D. noxia) and the green peach aphid (Myzus persicae) to vector Moroccan isolates of barley yellow dwarf luteovirus (BYDV-PAV) was evaluated on oat cv. Clintland 64 and the results of virus transmission were checked by direct ELISA. No evidence of biotype...