David Wari
Research / Technician
Ibaraki Prefecture Horticultural Research Institute
Kasama, Ibaraki Japan

Areas of Expertise:
Applied Entomology, Pest Control, Insect Rearing, Bioassays, DNA/RNA extraction and Mutation Analysis

Research Organisms:
Ibaraki Prefecture Horticultural Research Institute


Research Focus:

Development of an IPM system of managing greenhouse pest; silverleaf whitefly Bemsia tabaci in Ibaraki Prefecture of Japan.

Tomato in Ibaraki prefecture boasts the third largest in the country with a production of 47,300 tons, which is an important agricultural product of the prefecture. However, major problems and set back in cash revenue for local farmers have been occurring since the outbreak of the B. tabaci bio type Q in tomato produced in closed systems i.e greenhouses in the prefecture. In addition, B. tabaci has been developing resistance to pesticides recently produced and released. Furthermore, B. tabaci not only cause herbivory damages to the tomato plants, it also transmit economically important virus i.e. TYLCV and ToCV as well.

Nesidiocoris tenuis are predatory predators of quite prevalent at the southern part of Japan, and given its potential that has been vastly documented does occurs less in the northern prefecture of Japan, in that Ibaraki Prefecture. While N. tenuis has been extensively studies in the southern part of Japan, its utilization and usage and utilization and the closed system and its cultivation is not yet exhausted yet.
For these reasons, we have decided to study ecological and cultivation practices and characters of N. tenuis in the closed system of Ibaraki Prefecture. In doing so, establish IPM system to effectively control B. tabaci.