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How to Crop

Preventing hybridisation to protect natural resources

Some farming enterprises, such as wild harvesting, require particular care to ensure long-term sustainability and protect the environment.

Growing a pecan tree in your garden

Pecans are not only delicious; they are amongst the healthiest nuts available, says vegetable specialist Bill Kerr.

Preparing a good seedbed for tomatoes

Tomato seedlings grow best in a well-drained seedbed under full sun and protected from strong wind. Irrigation should be frequent but light.

Controlling fleabane in wheat and maize

This winter weed is widespread throughout Southern Africa. It has small seeds and is a shallow germinator.

Tomato pests to look out for

This crop is targeted by a wide range of pests. Infestation will vary from place to place, and from season to season, but some form of pest control will invariably...

Using manure as fertiliser: Mistakes to avoid

Livestock manure is a popular form of fertiliser, particularly when budgets do not allow for commercial fertiliser. But Dr Gerhardus Nortjé, a senior lecturer at Unisa, says that because manure...

Irrigating your home garden

If you apply too much water, you’re in danger of leaching nitrogen out of reach of the plant roots, says vegetable expert Bill Kerr.
Soil samples

Fertilisation: basic principles that every farmer should know

Achieving optimal yields is greatly dependent on providing crops with the right nutrition at the right time. Understanding the role of fertilisers and ensuring the correct application can make the...
watermelon

Know your watermelon varieties

The watermelon (Citrullus lanatus) originated in Africa, where tribes in arid areas used it as an emergency water source.
NASA plant physiologist Ray Wheeler checks onions being grown using hydroponic techniques.

Getting started with hydroponics

This new series will outline the basics of growing nutritious vegetables without the use of soil.
Balloon vine

Know your invasive species

This article looks at the beefwood, balloon vine and other species that, by law, have to be controlled or eradicated.
Keep earthworms to improve soil quality

Keep earthworms to improve soil quality

Earthworms play a crucial role in improving soil quality, and every farmer should try to maintain a healthy population of these remarkable creatures.

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