摘要:

An experiment to assess the economics of manual and pre‐emergence herbicide treatments to control weeds in hybrid maize was carried out at Egerton University, Njoro, Kenya in 1988–9. All weed control methods were profitable, although two weedings by jembe hoe before flowering, the most commonly used method in the Kenya highlands, gave the greatest net profit and net gain. Plots treated with full herbicide rates did not yield significantly more than those treated with half rates, and net profit was about the same for both. Maize with weed control showed slightly increased levels ofBusseola fuscacompared to maize without weed control.

ISSN:0143-6147    

DOI:10.1080/09670879209371686

出版商:Taylor & Francis Group    

年代:1992

数据来源: Taylor

摘要:

Field trials were conducted to control rodent pests of wheat crop by improving bait acceptability through taste enhancers (additives). Egg shell, egg yolk, yeast, minced meat, sheep blood and chicken blood were mixed 2% by weight individually in a bait base of broken rice and wheat flour. Brodifacoum and bromadiolone bait with egg shell additive ranked first, and egg yolk second, in preference over other additive poison baits and poison bait without additive. Poison baiting yielded 93.3% and 86.7% reduction in rodent population with brodifacoum and bromadiolone (0.005% each), respectively. Three baitings, at tillering, flowering and maturity stage of the crop, gave 91.0% tiller damage reduction with brodifacoum and 86.0% with bromadiolone as compared to control (untreated). It is concluded that three poison baitings containing egg shell additive should be initiated at tillering stage followed by flowering and maturity of the wheat crop for increased yield.

ISSN:0143-6147    

DOI:10.1080/09670879209371687

出版商:Taylor & Francis Group    

年代:1992

数据来源: Taylor

ISSN:0143-6147    

DOI:10.1080/09670879209371689

出版商:Taylor & Francis Group    

年代:1992

数据来源: Taylor

摘要:

IIE Guides to Insects of Importance to Man; No. 3, Coleoptera.R. B. Madge, R. G. Booth and M. Cox. International Institute of Entomology and The Natural History Museum, London, 1990. £25.00, paperback. ISBN 0 85198 6781.

ISSN:0143-6147    

DOI:10.1080/09670879209371690

出版商:Taylor & Francis Group    

年代:1992

数据来源: Taylor

摘要:

Combating strlga In Africa.Workshop proceedings,International Institute of Tropical Agriculture(IITA), Ibadan, Nigeria, (August 1988). Edited by Sun Kwo Kim. IITA.

ISSN:0143-6147    

DOI:10.1080/09670879209371691

出版商:Taylor & Francis Group    

年代:1992

数据来源: Taylor

ISSN:0143-6147    

DOI:10.1080/09670879209371692

出版商:Taylor & Francis Group    

年代:1992

数据来源: Taylor

ISSN:0143-6147    

DOI:10.1080/09670879209371693

出版商:Taylor & Francis Group    

年代:1992

数据来源: Taylor

ISSN:0143-6147    

DOI:10.1080/09670879209371665

出版商:Taylor & Francis Group    

年代:1992

数据来源: Taylor