As marginal cropping and low-input farming grow, sunflowers are gaining recognition as a suitable crop to cultivate rotationally with maize. Producers in dryland producing regions find sunflowers appealing due to their general drought tolerance and capacity to provide relatively constant harvests under adverse weather conditions and promising income due to sunflower oil’s application in food preparation, biofuel production, and cosmetics and skin care products. Sunflower flour and cake are fed to animals and the seeds are used for bird seed and human consumption.
However, sunflower production is challenged by various insect pests. The sporadic occurrence of the false chinch bug (Nysius natalensis) and the disease sclerotinia head and/or stalk rot, caused by the fungus Sclerotinia sclerotiorum, plays a role in the decline of sunflower plantings.
In South Africa, the region between 24°S and 30°S is the primary growing region for sunflowers. Up to 80% of the country’s sunflower production occurs in regions that have a semi-arid environment with variable and infrequent rainfall, low humidity and intense summertime sun radiation.
In the eastern highveld districts of Mpumalanga and the eastern portions of the Free State, the crop is often sown between November and December.
In the western regions of the Free State and North West, planting dates might be extended until mid-January; in the northern portion of the production area, planting takes place in January and February.
The northern region’s late planting date is determined by the area’s late rainfall.
Sunflower planting is frequently delayed past the customary dates by delayed spring rains throughout the whole summer rainfall area.
Denne historien er fra December 08, 2023-utgaven av Farmer's Weekly.
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Denne historien er fra December 08, 2023-utgaven av Farmer's Weekly.
Start din 7-dagers gratis prøveperiode på Magzter GOLD for å få tilgang til tusenvis av utvalgte premiumhistorier og 9000+ magasiner og aviser.
Allerede abonnent? Logg på
New farmers' seedling pitfalls
Inexperienced farmers may be tempted to grow seedlings from seed themselves, but they have much to gain by trusting a seedling grower at a nursery to perform this task for them instead
South African avocado production: a success story
Avocado production in South Africa has expanded markedly since the industry's humble beginnings over 80 years ago. From a small grove planted in 1938 in what was then Nelspruit, the industry has blossomed to seven million trees planted on 20 000ha. Dr Guy Witney, project manager at Great Brak Avos, spoke to Annelie Coleman about the country's avocado production.
Unlocking value through livestock exports
Exporting livestock might sound like a daunting business that's better left for big companies, but Gerrie Ferreira, who farms near Oudtshoorn in the Western Cape, has been doing it successfully for almost 30 years, sometimes in partnership with other breeders. He spoke to Glenneis Kriel about the huge potential this market holds, and offers some advice for farmers who are contemplating going this route.
An agribusiness's dedication to community upliftment
For agribusiness NWK, located in Lichtenburg, North West, corporate social investment is an important part of creating a positive influence alongside financial returns. Johan Bezuidenhout, NWK’s group manager of corporate marketing and communication, spoke to Annelie Coleman about why the company chooses to invest millions of rands in the area it operates in every year.
Empowering dreams, transforming lives
Since its launch in 2013, the Agri's Got Talent competition has revolutionised the lives of many farmworkers by unlocking their hidden talents and fostering a culture of empowerment. Glenneis Kriel spoke to various finalists about how the contest has changed their lives.
Foreign investment: agriculture maintains its appeal
South Africa remains a popular destination for foreign investors, despite an often negative outlook from its citizens. It is a gateway to Africa, and with its counterseasonal production to the Northern Hemisphere and favourable weather, local agriculture is especially well placed to attract foreign interest, bringing with it hope for rural communities
The real value and message of COP29 for SA agriculture
While the 2024 Conference of the Parties may have disappointed those who hoped for real progress, it's more important for South African agriculture to highlight its role in carbon mitigation
Improving efficiencies in feed and grain milling
Bühler, a Swiss-based company that provides solutions and equipment for various industries, including food and animal feed processing, has pledged that by 2025, it will deliver scalable solutions that will reduce energy, waste and water by 50% in the value chains of its customers.
Tips for better olive production
At an SA Olive Association field day in November, industry experts shared ways to improve olive production efficiencies, from soil preparation to harvesting.
More effort needed to protect vulnerable cheetah
On International Cheetah Day, commemorated every year on 4 December, emphasis was placed on the vulnerability of the species.
