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How to Crop

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.
Get intercropping right to achieve the highest yield

Get intercropping right to achieve the highest yield

Careful plant selection and good process management will help ensure success.
Growing tomatoes: know the varieties

Growing tomatoes: know the varieties

Tomatoes are an important part of our diet, as well as being highly nutritious. Bill Kerr tells us more about this versatile fruit, and the varieties that are most suitable...
Syringa Tree

Syringa berries are highly toxic

Syringa berries are highly toxic to livestock as well as children and dogs, warns Prof Cheryl McCrindle of the University of Pretoria. No specific treatment is available, so caution is...
Home gardens: irrigate sensibly and economically

Home gardens: irrigate sensibly and economically

Most home vegetable gardens are irrigated incorrectly. Here’s how to get it right, says Bill Kerr.
Soya bean crop

The nitrogen replacement value of soya bean

Maize following this leguminous crop usually shows no nitrogen deficiency symptoms.
Growing leeks in your garden

Growing leeks in your garden

No garden is complete without this underrated and versatile vegetable, says Bill Kerr.
Dealing with anthracnose

Dealing with anthracnose

This fungal disease can wipe out a dry bean crop. Here’s how to prevent, and treat, this problem.
Maize cultural practices

Maize cultural practices

Soil tillage, particularly primary tillage, is the foundation of every crop production system and the main cost factor in maize production.
Enjoy the taste of fresh garden peas!

Enjoy the taste of fresh garden peas!

These days, most people opt for frozen peas for convenience. They don’t know what they’re missing, says Bill Kerr. Fresh peas are far tastier and sweeter.

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