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  • Green bean micronutrients: requirements Green bean micronutrients or trace elements are often a forgotten aspect, not just in green beans but in general vegetable farming. Micronutrient deficiencies are rare…
  • Green bean planting times Green bean planting times are crucial since they are sensitive to frost They can be cultivated only when there is no longer any danger or…
  • Pests found commercial lettuce… Lettuce pests can be controlled in large commercial plantings. Due to the high planting densities and large fields, scouting is often neglected. Most pests are…
  • How to grow lettuce… According to botanists the current variety, Lactuca sativa, was developed from Lactuca scariola, which is a common weed in Europe, Abyssinia, East Asia and the…
  • The production of pumpkins… Pumpkins and squashes belong to the family cucurbitaceae and are related to calabashes, watermelons and muskmelons. Pumpkins and squashes probably originated in America from where…
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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…

Planting time of field grown tomatoes

Tomatoes are warm season crops. So unless your winters are warm, you will not be able to plant in the winter. The average farmer will plant as early as possible so that he can be first on the market. So being first is good for the bottom line, but there might be a late cold…

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…

Solving the mystery of the two main types of tomato plants

Solving the mystery of the two main types of tomato plants Indeterminate tomato varieties will grow ‘forever’.  So they can grow over two seasons. Determinate varieties die after about 100 days.  If you have a very short season to grow your tomato crop it is cheaper to buy a determinate variety, but if you want…

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…