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  • Organic phosphorus and plant… The fraction of organic phosphorus that is available for plants is very small and not enough for the plant to grow properly. Compared to nitrogen…
  • Blosyrus inaequalis beetle in… Blosyrus inaequalis is mostly found in Siri-Lanka and India, but lately also in the northern parts of South Africa. So far the economical damage cause…
  • Sweet potato weevil (Cylas… Sweet potato weevil((Credit of featured image by Author Graham Wise from Brisbane, Australia https://commons.wikimedia.org/wiki/File:Cylas_formicarius_(14576849194).jpg)) can be devastating in Africa. losses between 73((N.E.J.M.Smit,“The effect of the…
  • Propagating, planting and harvesting… Planting material Sweet potatoes are propagated vegetatively through vines (or runners) which are cut up in cuttings, each 300-400mm long. Most other crops are propagated…
  • Butternut fertilizer application tables… Butternut((Featured image by: Butternut Citrouille Courge - Photo gratuite sur Pixabay)) (Cucurbita moschata) fertilizer requirements can be calculated if you know your soil type and…
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Weed Management and control

open field vegetable growing weed control

Successful open field crop production depends on good weed management practices.  Controlling weeds forms part of the total crop management program which includes other activities such as pest and disease management and general hygiene.  The planning of a weed management control program is much easier than planning pest and disease management programs.  The reasons are that…