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  • 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…
  • Sweet potato soil requirements Sweet potato soil requirements are similar to many other vegetable crops. Good high quality soil is the first step towards good yields, it is not…
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Trellising and staking field grown tomatoes

harvesting ripe field grown tomatoes

Determinate variety tomatoes need to be trellised. Unlike processing tomatoes which are not trellised and in most very large commercial farms, harvested by mechanical means, which means processing tomatoes are only harvested once.  Determinate fresh tomatoes ( such as the standard beefsteak tomato varieties) are harvested during a period of 90-120 days depending on the…

Harvesting field tomatoes

Harvesting field grown tomatoes is a labour intensive process.  Unlike processing tomatoes which can be harvested mechanically, field grown trellised tomatoes has to be harvested by hand. The sorting can be done mechanically. Tomato fruit ripen according to temperature.  The ripening process is initiated by the hormone ethylene. In long life tomatoes, ethylene release is…

Field grown tomatoes – the basics

Basic horticulture of growing tomatoes The common tomato or scientifically classified as Solanaceae Lycopersicon lycopersicum (L) Karst. ex Farw. is one of the most popular vegetables planted both by commercial farmers, small scale farmers and home gardeners.  It is actually a pleasure to grow tomatoes as there are so many varieties available today that marketing…