Enzyme electrophoretic analysis was used to test the hypothesis that hemlock woolly adelgid in the East are genetically uniform. Adelgids from infested eastern hemlock collected in Virginia, New Jersey, and Connecticut were screened at each of seven putative enzyme loci. The isozyme profiles for four of the enzymes were typical of homozygous and invariant loci for adelgids from the three sites....

Preventing a pest population from damaging an agricultural crop and, at the same time, preventing the development of pesticide resistance is a major challenge in crop protection. Understanding how farming practices and environmental factors interact with pest characteristics to influence the spread of resistance is a difficult and complex task. It is extremely challenging to investigate such in...

CONTEXT Pesticides continue to be used on school property, and some schools are at risk of pesticide drift exposure from neighboring farms, which leads to pesticide exposure among students and school employees. However, information on the magnitude of illnesses and risk factors associated with these pesticide exposures is not available. OBJECTIVE To estimate the magnitude of and associated ri...

BACKGROUND Pesticide poisoning is an important health problem among Chinese farm workers, but there is a paucity of pesticide poisoning data from China. Using the WHO standard case definition of a possible acute pesticide poisoning, we investigated the prevalence and risk factors of acute work-related pesticide poisoning among farmers in Southern China. METHODS A stratified sample of 910 pest...

Pesticide applications to agricultural lands in California, USA, are reported to a central data base, while data on water and sediment quality are collected by a number of monitoring programs. Data from both sources are geo-referenced, allowing spatial analysis of relationships between pesticide application rates and the chemical and biological condition of water bodies. This study collected da...

The purpose of this article is to provide an overview of pesticide poisoning in South Korea and the relevant epidemiologic characteristics. During the period of 1996–2005, an approximate average of twenty-five hundred fatalities occurred per year due to pesticide poisoning, while age-standardized mortality rates by pesticide poisoning significantly increased from 4.42 to 6.42 per 100,000 popula...

There are many considerations when using pesticides to manage insects and mites on nursery and landscape plants. Although efficacy is obviously central for any pesticide use, there are often special problems with development of pesticide resistance among certain pests (e.g., twospotted spider mite). Conservation of natural enemies of insect and mite pests is critical to optimizing pest manageme...

Pesticide-resistant populations of the predatory mite Metaseiulus (= Typhlodromus or Galendromus) occidentalis (Arthropoda: Chelicerata: Acari: Phytoseiidae) have been used in the biological control of pest mites such as phytophagous Tetranychus urticae. However, the pesticide resistance mechanisms in M. occidentalis remain largely unknown. In other arthropods, members of the glutathione-S-tran...

The large-scale commercial cultivation of transgenic crops has undergone a steady increase since their introduction 10 years ago. Most of these crops bear introduced traits that are of agronomic importance, such as herbicide or insect resistance. These traits are likely to impact upon the use of pesticides on these crops, as well as the pesticide market as a whole. Organizations like USDA-ERS a...

Background: Pesticide poisoning is a common method of suicide attempt and less commonly accidental poisoning in Bangladesh. This review for the first time estimated the extent and characteristics of pesticide poisoning in Bangladesh and explored existing limitations in methodologies of studies done on poisoning in the country. Methods: A narrative search in electronic medical databases includin...