Laboratory experiments were conducted to examine selection by Cotesia plutellae between host larvae feeding on two plant species: Chinese cabbage, Brassica campestris ssp. pekinensis and common cabbage, Brassica oleracea var. capitata. When C. plutellae wasps were provided with equal numbers of Plutella xylostella larvae on both species of plants in one arena, the parasitoid parasitised 4-15 fo...

Chinese cabbage (Brassica rapa ssp. pekinensis) is one of the most important vegetable crops grown worldwide, and various methods exist for selection, propagation, and cultivation. The entire Chinese cabbage genome has been sequenced, and the heat shock transcription factor family (Hsfs) has been found to play a central role in plant growth and development and in the response to biotic and abio...

The cabbage webworm, Hellula undalis (F.) is a major pest of cruciferous vegetables in the lowlands of Malaysia. The common host plants include cabbage, radish, cauliflower, Chinese kale, Chinese mustard and the Cleome weed spp. Damage by cabbage webworm is particularly serious on cabbage because damage on the shoot by a single larva can cause either death of the plant or production of unmarket...

Crocidolomia pavonana ( binotalis) [F.] demonstrates oviposition peaks in the Þeld that we believe to be correlated with host plant phenology. In previous two-choice laboratory experiments, we found the highest relative proportion of oviposition on cabbage to correspond either to plant growth stages 7Ð8 wk or 9Ð11 wk old, depending on the alternate host plant with which it was presented. In cab...

Brassica crops infected by Plasmodiophora brassicae can produce root galls (clubroots) and be prevented from growing normally. To understand the series of changes that occur in the host root during root gall production, the resistance character of 21 Chinese cabbage lines were identified and then resistant and susceptible lines were used for infection observation. Hydroponic technology system w...

Korean cabbage, a member of the Brassicaceae family which also includes cauliflower, mustard, radish, and turnip plants, is a crucial leafy vegetable crop. Korean cabbage is harvested after completion of the leaf heading process and is often prepared for use in "baechu kimchi", a traditional Korean food. Many of the components in Korean cabbage are essential for proper human nutrition; these co...

Cruciferous crops on Guam are infested by cabbage webworm, Hellula undalis (F.), cabbage cluster caterpillar, Crocidolomia pavonana Zeller, mustard aphid, Lipaphis erysimi (Davis), armyworm, Spodoptera litura (F.), flea hopper, Halticus tibialis (Reuter), fire ant, Solenopsis geminata (F.), leaf miners, Liriomyza spp., diamondback moth, Plutella xylostella (L.), corn earworm, Helicoverpa armige...

The use of chemical insecticides in the control of insect pests has left in its wake resistance of some pests to some of the conventional insecticides. Alternative methods of managing pests such as cultural control have to be employed to reduce pest infestation of crops. Onion was used in an intercrop as a non host crop to manage the pests of cabbage. The experiment was conducted in a Randomize...

Ovipositional preference and larval survival of the diamondback moth, Plutella xylostella (L.), were compared among cabbage, Brassica oleracea L. variety capitata; glossy collards, Brassica oleracea L. variety acephala; and yellow rocket, Barbarea vulgaris (R. Br.) variety arcuata in different treatments of planting density, host plant age, intercropping, and water stress in 2003 and 2004. P. x...