ARMYWORM MANAGEMENT ON FRESH MARKET TOMATOES, FALL 2002
نویسندگان
چکیده
منابع مشابه
Modeling seasonal migration of fall armyworm moths.
Fall armyworm, Spodoptera frugiperda (J.E. Smith), is a highly mobile insect pest of a wide range of host crops. However, this pest of tropical origin cannot survive extended periods of freezing temperature but must migrate northward each spring if it is to re-infest cropping areas in temperate regions. The northward limit of the winter-breeding region for North America extends to southern regi...
متن کاملEvaluation of action threshold-based insecticide spray programs for tomato fruitworm management in fresh-market tomatoes in Virginia
Action threshold-based insecticide spray regimens were evaluated for control of tomato fruitworm (Helicoverpa zea [Boddie]) in freshmarket tomatoes in eastern Virginia in 1998 and 1999. The initial foliar-applied insecticide spray was made based on the presence of X1 H. zea egg on either X2%, X10% or X20% of plants sampled, while subsequent sprays were made on either a weekly basis or only if X...
متن کاملEffects of limonoids from Cipadessa fruticosa on fall armyworm.
Six mexicanolide limonoids isolated from the dichloromethane extract of the fruits of Cipadessa fruticosa Blume (Meliaceae) were evaluated against Spodoptera frugiperda (J. E. Smith). Gedunin was used as a positive control. When incorporated into an artificial diet of neonates at 50.0 mg kg(-1), febrifugin A showed 73.3% mortality. All the compounds showed moderate insecticidal activity, except...
متن کاملEvaluation of Trichoderma harzianum Strains to Control Crown and Root Rot of Greenhouse Fresh Market Tomatoes
Greenhouse tomato growers in the United States have few products available for chemical control of plant pathogens. Biological control of soilborne plant pathogens by antagonistic microorganisms is a potential alternative to the use of chemical pesticides during greenhouse production. Biological control experiments were conducted to test the effects of commercial and noncommercial strains of Tr...
متن کاملSUMMER FALL 2002 print
Studies Computer aided drafting (CAD) has largely supplanted manual drafting in the workplace. As new technologies and practices are adopted in industry, they should also be incorporated in academic curricula (Stephens, 1997). Consequently , CAD has also become the standard in academic environments, and coursework emphasizing manual drafting has been largely eliminated or relegated to introduct...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Arthropod Management Tests
سال: 2004
ISSN: 2155-9856
DOI: 10.1093/amt/29.1.e84