ISSN:0005-772X    

DOI:10.1080/0005772X.1979.11097742

出版商:Taylor&Francis    

年代:1979

数据来源: Taylor

ISSN:0005-772X    

DOI:10.1080/0005772X.1979.11097743

出版商:Taylor&Francis    

年代:1979

数据来源: Taylor

摘要:

In 1966 Dr. C. A. Johansen wrote f or Bee World a Digest on bee poisoning, its effects and prevention, with an annotated list of 92 insecticides. Since then, much work has been done in many countries to reduce the hazards of insecticides to bees. In this article Dr. Johansen explains some of the advances, and setbacks. He refers especially to the USA, where the large-scale methods of agriculture and the high degree of mechanization amplify some of the problems. But ignorance is the greatest enemy of all, and many bees are now being killed by insecticides in developing countries where availability of materials has outstripped knowledge about their proper use.

ISSN:0005-772X    

DOI:10.1080/0005772X.1979.11097744

出版商:Taylor&Francis    

年代:1979

数据来源: Taylor

ISSN:0005-772X    

DOI:10.1080/0005772X.1979.11097745

出版商:Taylor&Francis    

年代:1979

数据来源: Taylor

ISSN:0005-772X    

DOI:10.1080/0005772X.1979.11097746

出版商:Taylor&Francis    

年代:1979

数据来源: Taylor

ISSN:0005-772X    

DOI:10.1080/0005772X.1979.11097747

出版商:Taylor&Francis    

年代:1979

数据来源: Taylor

ISSN:0005-772X    

DOI:10.1080/0005772X.1979.11097749

出版商:Taylor&Francis    

年代:1979

数据来源: Taylor

ISSN:0005-772X    

DOI:10.1080/0005772X.1979.11097750

出版商:Taylor&Francis    

年代:1979

数据来源: Taylor