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05 November 2021 | Story Leonie Bolleurs | Photo Supplied
Andries van der Merwe was presented the Koos van der Merwe AFMA Student of the Year Award as the most outstanding final-year student in Animal Nutrition in 2021/2022.

Since childhood, a love of animals, nature, and agriculture has been instilled in Andries van der Merwe. He used to accompany his father, the local veterinarian in Postmasburg, helping where he could. “I can still vividly remember the first C-section I helped him with when I was about 12,” he says. 

A few years later, Andries decided to enrol for his studies at the University of the Free State (UFS) in order to get his grades up to study veterinary medicine one day. “But when I reached my third year and started with the subject Animal Nutrition, I saw that I could make a bigger difference and contribution to the agricultural sector through nutrition. The moment I realised this, my mind was made up to study towards becoming an animal nutritionist,” he says.

Viable alternative to the excessive use of antibiotics

His master’s thesis on the use of tannins as a feed additive to increase the production efficiency of ruminants (sheep, cattle, and goats) is also looking for a viable alternative to the excessive use of antibiotics to treat certain non-specific ailments such as diarrhoea and skin diseases.

With his work having the potential to one day make a difference in the agricultural sector, as well as some encouragement from his supervisor, Dr Ockert Einkamerer, Senior Lecturer in the Department of Animal Science, Andries entered and won AFMA’s Student of the Year competition. 

During a virtual symposium on 18 October 2021, the Animal Feed Manufacturers Association (AFMA) presented Andries with the Koos van der Merwe AFMA Student of the Year Award as the most outstanding final-year student in Animal Nutrition in 2021/2022.

“I have no idea what could have impressed the judges”, says Andries, who competed with students from universities across South Africa. 

Making a contribution to animal feeding in South Africa

“I am the second student from the UFS to win this award. Gert Daniel Jacobus Scholtz received the award in 1998 – my birth year,” says Andries. 

“It is an enormous honour for me to receive this highly prestigious award. I believe that the exposure I receive due to this reward will help me to secure a position where I can make a valuable contribution to the industry much quicker,” he adds.

De Wet Boshoff, Executive Director of AFMA, commended Andries: “I wish to congratulate you on behalf of the Animal Feed Manufacturers Association (AFMA) on winning the award. I believe it will encourage you to – through further studies and your career in the future – make a contribution to animal feeding in the Republic of South Africa.”

The award consists of a certificate and a cash amount of R20 000 sponsored by AFMA.

Andries is planning on completing his master’s degree. “I am considering a PhD and a Master’s of Business Administration. The latter is to ensure that I will be a vital part of any company in the industry,” he says.

“What is meant to happen will happen … you just need to have faith,” he believes.

News Archive

Sunflowers are satellite dishes for sunshine, or are they?
2016-07-20

Eighty-six percent of South Africa’s
sunflowers are produced in the
Free State and North West provinces.

Helen Mirren, the English actress, said “the sunflower is like a satellite dish for sunshine”. However, researchers at the University of the Free State (UFS) have found that too much of this sunshine could have a negative effect on the growth of sunflowers, which are a major source of oil in South Africa.

According to Dr Gert Ceronio from the Department of Soil, Crop, and Climate Sciences at the UFS, extremely high soil temperatures play a definite role in the sprouting of sunflower seedlings. Together with Lize Henning, professional officer in the department, and Dr André Nel from the Agricultural Research Council, he is doing research on biotic and abiotic factors that could have an impact on sunflowers.

Description: Sonneblom 2 Tags: Sonneblom 2

Various degrees of deformity (bad-left
to none-right) in seedlings of the same
cultivar at very high soil temperatures.
Photo: Dr Gert Ceronio

Impact of high temperatures on sunflower production

The Free State and North West provinces, which produce 86% of South Africa’s sunflowers, are afflicted especially by high summer temperatures that lead to extremely high soil temperatures.

Dr Ceronio says: “Although sunflower seeds are able to germinate at temperatures from as low as 4°C to as high as 41°C, soil temperatures of 35°C and higher could have a negative effect on the vegetative faculty of sunflower seedlings, and could have an adverse effect on the percentage of sunflowers that germinate. From the end of November until mid-January, this is a common phenomenon in the sandy soil of the Free State and North West provinces. Soil temperatures can easily exceed the critical temperature of 43°C, which can lead to poor germination and even the replanting of sunflowers.”

Since temperature have a huge impact not only on the germination of sunflower seeds, but also on the vegetative faculty and sprouting of sunflower seedlings, Dr Ceronio suggests that sunflowers should be planted in soil with soil temperatures of 22 to 30°C. Planting is usually done in October and early November. Unfortunately, this is not always possible, as soil moisture is not optimal for growth. Farmers are then compelled to plant sunflowers later.

Impact of herbicides on sunflower growth

“High soil temperatures, combined with the herbicide sensitivity of some cultivars, could lead to the poor development of seedlings," says Dr Ceronio.

The use of herbicides, such as ALACHLOR, for the control of weeds in sunflowers is common practice in sunflower production. It has already been determined that ALACHLOR could still have a damaging effect on the seedlings of some cultivars during germination and sprouting, even at recommended application dosages.

“The purpose of the continued research is to establish the sensitivity of sunflower cultivars to ALACHLOR when exposed to high soil temperatures,” says Dr Ceronio.

 

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