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Vegetables

Hi-tech onion business delivering 200t a day!

Hi-tech onion business delivering 200t a day!

Willem, Jaco and Kolver Mulke produce onions on a large scale near Douglas on the border between the Free State and the Northern Cape. Sabrina Dean visited their high-tech operation...
baby carrots

A guide to growing baby carrots

There’s always a market for baby vegetables, and carrots are no exception. In the past, top-shaped baby carrots were the most popular in the frozen range.
Carrots: get your numbers right!

Carrots: get your numbers right!

Hot weather is unfavourable for carrot germination. Depending on the soil’s condition and structure, it also promotes the growth of soil fungus diseases, especially when heavy rain falls, as is...
Preparing to plant carrots: seeds and soil

Preparing to plant carrots: seeds and soil

Carrots have a very deep root system and a mass of fine feeder roots.
Dealing with pumpkin flies

Dealing with pumpkin flies

Pumpkin flies, which are slightly larger than houseflies, are similar to the fruit flies so well-known to fruit farmers.
How to control cucurbit viruses

How to control cucurbit viruses

It is also important to control aphids as these are the primary vectors of viruses. Apart from spreading viruses, they are up to no good anyway!
Witlof: a new entrant to SA’s leafy vegetables market

Witlof: a new entrant to SA’s leafy vegetables market

Witlof, also known as Belgian endive, is a notoriously difficult vegetable to grow, but Koue Bokkeveld grower Fanie van der Merwe has mastered the art, producing 1t of witlof a...
Why pumpkins need space to grow

Why pumpkins need space to grow

There is no one-size-fits-all recipe for growing pumpkins. This is especially true of spacing, where many factors have to be considered.
Learning about cucurbiits

Learning about cucurbits

Cucurbits are a group of plants belonging to the gourd family (Cucurbitaceae). They include pumpkins and squashes (Cucurbita spp), melons (Cucumis melo), cucumbers (C. sativus) and watermelons (Citrullus lanatus).
Understanding genetic chimera in a crop

Understanding genetic chimera in a crop

Farmers often draw my attention to ‘weird signs’ on a plant, fearing them to be the start of a devastating virus. A closer examination often reveals the cause to be...
African Bollworm

Dealing with the African bollworm

The African bollworm (Helicoverpa armigera) has many host crops. The caterpillar, which is spiny when young, has a light stripe on the sides and usually turns green to match the...
Producing onions out of season

Producing onions out of season

You can trick onions into providing an out-of-season crop ready for market when the price is just about at its peak by planting small bulbs called ‘sets’.

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