Calico (bright yellow mosaic) leaf symptoms occurred on occasional tedera plants (Bituminaria bituminosa var. albomarginata and var. crassiuscula) growing in genetic evaluation plots containing spaced plants at Newdegate in 2007 and Buntine in 2010. Alfalfa mosaic virus (AIMV) infection was...

In the grainbelt of south-western Australia, which experiences Mediterranean-type climatic conditions, 3 field experiments with wheat were sown in autumn, 2 at Site A over 2 years and 1 at Site B in the first year only. These experiments related both activity of aphid vectors (migration into and...

Field experiments were conducted to determine whether drenching plants with two systemically active neonicotinoid insecticides, thiamethoxam and imidacloprid, suppresses spread of Tomato spotted wilt virus (TSWV) by thrips vectors. Separate treatments to TSWV 'infector' tomato (source) and healthy...

Patterns of spread of Tomato spotted wilt virus (TSWV) were examined in lettuce and pepper plantings into which thrips vectors spread the virus from external virus sources. These plantings were: (1) seven separate field trials into which TSWV 'infector' plants of tomato were introduced alongside or ...

This research sought to identify the aphid virus vector species associated with lettuce and broccoli crops in Spain, and to determine their population dynamics and ability to transmit Lettuce mosaic virus (LMV). Green tile traps and Moericke yellow water-pan traps were used to monitor aphid flights ...

Cucumber mosaic virus (CMV) causes a serious disease of narrow-leafed lupin (Lupinus angustifolius). It is seed-borne in lupin and seed-infected plants act as the primary virus source for secondary spread by aphid vectors within crops. Infection with CMV causes yield losses of up to 60% in epidemic ...

The acquisition of tospoviruses by thrips vectors is restricted to a well defined time period during the first and early second larval stages, when there is a temporary association between mid-gut, visceral muscles and salivary glands. This association is the result of a displacement of the brain...

Three genera of plant viruses, Begomovirus (Geminiviridae), Crinivirus (Closteroviridae) and Ipomovirus (Potyviridae), contain members that infect sweet potato (Ipomoea batatas) and are transmitted by whiteflies. The begomoviruses, Sweet potato leaf curl virus (SPLCV) and Ipomoea leaf curl virus...

Aphid species were counted on citrus trees in orchards in Valencia, Spain, in the spring and autumn of 1997, 1998 and 1999. Moericke yellow water traps, the 'sticky shoot' method and counts of established colonies were used in extensive surveys in which 29 502 aphids were recorded and identified. ...

Yield losses caused by necrotic and non-necrotic strains of bean yellow mosaic virus (BYMV) in narrow-leafed lupin (L. angustifolius) were quantified in field experiments conducted in Avondale (1998, 1999 and 2001) and Badgingarra (2001), Western Australia. Clover plants infected with either strain ...