A survey of com borer populations in fields of sweet and fodder com showed that Chilo agamemnon (Bles.) was the main pest of com in Israel in 1969 and 1970, after which the poputation size gradually deereased. The population of an0ther pest, Sesamia cretica (Led.), also decreased, probably due to reductions in the sorghum acreage in Israel; the European com borer, Ostrinia nubilalis (Hb.), was found in very small numbers. On the other hand, Sesamia nonagrioides (Lef.) has gradually increased in number and is now the rnain pest attacking all corn varieties in Israel. These changes are believed to be due to alterations in agricultural pracrices -such as irrigation, to changes in the acreage of the host plants, and to the introduction of new varieties.
Tomato yellow leaf curl virus (TYLCV), which is transmitted by Bemisia tabaci (Gennadius), is a very destructive disease of tomato in Israel. Soil mulching with yellow polyethylene sheets delayed the spread of the disease for at least 20 days. In laboratory and field experiments, B. tabaci was found to be more attracted to yellow polyethylene than to straw or to aluminium-or blue-coloured polyethylene. A combined treatment of mulching with yellow polyethylene sheets and 1 % sprays of azinphos-methyl starting 20 days after germination was the most effective in preventing the spread of TYLCV.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.