Pfeiffer R.K.2015-07-162015-07-161957Pfeiffer, R.K. (1957). General aspects of chemical weed control in tropical and sub-tropical countries. East African Agricultural And Forestry Journal, XXIII (1), 25-28. https://kalroerepository.kalro.org/handle/0/48210012-8325https://kalroerepository.kalro.org/handle/0/4821Weed control in general is discussed with emphasis on the use of selective herbicides, and it is contended that in tropical agriculture weeds are more important as a limiting factor than in temperate climates and often present a greater problem than pests and diseases.enhttp://creativecommons.org/licenses/by/3.0/Journal ContributionHerbicidesWeedsPestsCrops