Pest management has long been a problem for farmers worldwide and new techniques are continually being developed to reduce the adverse effects of pest populations. The use of areawide pest management has increased dramatically over the past decade and offers potential advantages to traditional and more localized approaches. Suppression over a broad area can reduce re-infestation of previously treated areas and the specific pest management techniques may be more effective when applied over larger areas. Providing the first comprehensive discussion of areawide pest management, this book will explore the theoretical development and implementation of techniques from a worldwide perspective. Areas covered include history and development, biological and ecological impacts and recent case studies of pest management programmes.

This updated second edition of Notable Twentieth-Century Scientists provides biographies of approximately 1,600 scientist in the natural, physical, and applied sciences, including astronomy, biology, botany, chemistry, earth science, mathematics, medicine, physics, technology, zoology, computer science, ecology, engineering, and environmental science. Entries highlight name, birth/death dates, nationality, and primary specialization; run from 400- 2500 words; list publications; and feature a section of further reading. All five volumes of the set begin with a list of entries and a chronology of major advances, and volume five ends with several indexes based on the scientist's specialization, gender, nationality/ethnicity, and subject. Over 400 scientists garner photographs. Diversity and internationalism are hallmarks of the set. Suitable for high school and college. c. Book News Inc.

Alfabetisk ordnet opslagsværk over naturvidenskabsmænd og -kvinder fra hele verden; med angivelse af egne værker og værker om