Three field experiments were carried out in Jordan during the spring growing seasons of 1995, 1996 and 1997 to study the effect of the different aluminum foil applications (surface mulched aluminum foil, aluminum foil boards) in controlling mosaic diseases [watermelon mosaic II potyvirus, zucchini...

The position and the structure of the mycangium (carrying microorganisms) of Dendroctonus armandi Tsai et Li, the most destructive bark beetle in Qinling and Bashan Mountains were studied. The results showed that the mycangia of the adult D. armandi consisted of the pronotal intergumentary cavities ...

Narrow-leafed lupin (Lupinus angustifolius) was sown in five field experiments in Australia over three years to investigate the effects of applying imidacloprid, alpha-cypermethrin, triazamate and methamidophos on aphid vector numbers, spread of cucumber mosaic virus (CMV), resulting yield losses...

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...

Mechanical inoculation and transmission by thrips (Frankliniella occidentalis) were used to screen 22 Lycopersicon peruvianum accessions and 2 Lycopersicon chilense accessions for resistance to tomato spotted wilt virus (TSWV). Two highly aggressive Spanish TSWV isolates were used (HA-931100 and...

Insects have been shown to serve as vectors for a wide array of fungi. In some cases, insect-vectored fungi produce potent toxins in the host plant, which might create problems for the food industry. Recent findings indicate that the coffee berry borer, Hypothenemus hampei (Ferrari) could be...

Several aphid non-transmissible strains of zucchini yellow mosaic virus (ZYMV) have been described, in relation with mutations in the 2 viral proteins required for transmissibility, coat protein and helper component. Assistance mechanisms were previously shown to allow transmission of such strains...

In different regions of Spain, carrot plants have exhibited symptoms of yellows disease, such as small leaves exhibiting yellowing and reddening, proliferation of leaves and small roots, deformation, reduction, and early senescence of roots. The production area most affected was in the Canary...

A membrane feeding system and polymerase chain reaction (PCR) were used to track squash leaf curl virus (SLCV) DNA in whole whitefly body extracts and in saliva, honeydew, and haemolymph of its whitefly vector, Bemisia tabaci, and a whitefly nonvector, Trialeurodes vaporariorum. SLCV ingestion was...

In late 1994, bushfires in the Beerburrum area north of Brisbane, in Queensland, Australia, damaged 8688 ha of pine plantations (mostly Pinus elliottii, P. caribaea and P. taeda). In the 4712 ha of government-owned plantations affected, large-scale salvage operations were commenced quickly in order ...