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05 June 2023 | Story Leonie Bolleurs | Photo Supplied
Prof Bahta
For the past three years, Prof Yonas Bahta has studied the resilience of smallholder livestock farmers in agricultural drought, and the competitiveness of agri-food commodities.

The agricultural sector is marked by farmers’ daily struggles, including price hikes, climate change effects, and pest and disease outbreaks.

Prof Yonas T Bahta, Associate Professor and astute National Research Foundation (NRF) C2-rated researcher in the Department of Agricultural Economics at the University of the Free State (UFS), found that smallholder farmers who received drought relief support saw an improvement in their welfare. The study also found that economic capital, social capital, human capital, and natural capital substantially affected the welfare of smallholder farmers.

Agricultural drought

These findings came from the study, titled: The resilience of households to agricultural drought in the Northern Cape province of South Africa. Prof Bahta’s aim with this study was threefold – to assess household resilience to agricultural drought among smallholder livestock farmers, to evaluate the welfare of smallholder farming households affected by agricultural drought, and to identify factors influencing agricultural drought resilience and food insecurity among smallholder livestock farmers.

During his investigation, he found that only 9% of the smallholder livestock farmers were resilient to agricultural drought. According to him, farming households with access to credit, farmers who received assistance from the government (such as training and feed) during drought, and farmers who are part of a cooperative proved to be more resilient to agricultural drought.

When it comes to food security, he discovered that assets, social safety nets, and indicators of adaptive capacity had a positive influence on households' ability to withstand food insecurity. Alternatively, climate change indicators negatively impacted households’ resilience to food insecurity.

For the past three years, he has studied the resilience of smallholder livestock farmers in agricultural drought. He believes that resilience – the ability to bounce back from adversities – is crucial.

According to him, both the smallholder livestock sector (farmers) and the agrifood industry need to develop resilience to effectively cope with and recover from agricultural drought, macroeconomic stability (inflation), competitiveness, productivity, and other related factors.

Competitiveness of agri-food commodities

Prof Bahta also launched investigations into the competitiveness of agri-food commodities in South Africa as well as Namibia.

The studies were titled: Competitiveness of Namibia’s Agrifood Commodities: Implications for Food Security and Competitiveness of South Africa’s Agrifood Commodities.

In these studies, he respectively looked at the competitiveness of South Africa’s and Namibia’s agrifood products, the factors that influence it, and its implication for food security.

In both countries, he discovered a combination of comparative advantage and disadvantage.

“South Africa and Namibia exhibited a trade structure that was less concentrated and not dependant on international trade in the agri-food industry, having minimal impact on Namibia's food security. The productivity of agriculture and GDP per capita positively influenced the comparative advantage of South Africa, whereas land productivity and GDP per capita influenced the degree of food insecurity in Namibia,” explains Prof Bahta the main research findings.

Research outputs

The study on the resilience of smallholder livestock farmers was supported by funding from the National Research Foundation. To explore the competitiveness of agri-food commodities, Prof Bahta collaborated with the Namibia University of Science and Technology (NUST), benefiting from their strong existing academic relationship. The UFS Office for International Affairs played a key role in facilitating this study, with research partnerships existing between the universities of both countries.

According to Prof Bahta, the findings of these two studies have resulted in the publication of more than 13 articles in journals ranking in the highest (Q1) and second highest categories (Q2) in the specific field. A paper will also be presented at the upcoming International Food and Agribusiness Management Association (IFAMA) international conference in New Zealand from 17 to 20 June 2023.

Furthermore, five popular articles on the main findings of the studies (written in non-technical language) were also published on these topics, focusing on the farmers and policy makers (as a policy brief and popular) as the target audience. These articles looked at, among others, the impact of policy intervention on food insecurity in times of shock; coping strategies of smallholder livestock farmers during food insecurity shocks; measuring the resilience of female smallholders in South Africa; and farming for success.

This study also resulted in the graduation of three master's students (two with distinction) and three honours students.

Looking ahead, Prof Bahta emphasises the necessity for conducting similar studies targeting both commercial and smallholder farmers, focusing on crops and livestock in various provinces across South Africa. He also feels that connections need to be established with universities besides NUST.

News Archive

UFS physicists publish in prestigious Nature journal
2017-10-16

Description: Boyden Observatory gravitational wave event Tags: Boyden Observatory, gravitational wave event, Dr Brian van Soelen, Hélène Szegedi, multi-wavelength astronomy 
Hélène Szegedi and Dr Brian van Soelen are scientists in the
Department of Physics at the University of the Free State.

Photo: Charl Devenish

In August 2017, the Boyden Observatory in Bloemfontein played a major role in obtaining optical observations of one of the biggest discoveries ever made in astrophysics: the detection of an electromagnetic counterpart to a gravitational wave event.
 
An article reporting on this discovery will appear in the prestigious science journal, Nature, in October 2017. Co-authors of the article, Dr Brian van Soelen and Hélène Szegedi, are from the Department of Physics at the University of the Free State (UFS). Both Dr Van Soelen and Szegedi are researching multi-wavelength astronomy.
 
Discovery is the beginning of a new epoch in astronomy
 
Dr van Soelen said: “These observations and this discovery are the beginning of a new epoch in astronomy. We are now able to not only undertake multi-wavelength observations over the whole electromagnetic spectrum (radio up to gamma-rays) but have now been able to observe the same source in both electromagnetic and gravitational waves.”
 
Until recently it was only possible to observe the universe using light obtained from astronomical sources. This all changed in February 2016 when LIGO (Laser Interferometer Gravitational-Wave Observatory) stated that for the first time they had detected gravitational waves on 14 September 2015 from the merger of two black holes. Since then, LIGO has announced the detection of two more such mergers. A fourth was just reported (27 September 2017), which was the first detected by both LIGO and Virgo. However, despite the huge amount of energy released in these processes, none of this is detectable as radiation in any part of the electromagnetic spectrum. Since the first LIGO detection astronomers have been searching for possible electromagnetic counterparts to gravitational wave detections. 
 
Large international collaboration of astronomers rushed to observe source
 
On 17 August 2017 LIGO and Virgo detected the first ever gravitational waves resulting from the merger of two neutron stars. Neutron star mergers produce massive explosions called kilonovae which will produce a specific electromagnetic signature. After the detection of the gravitational wave, telescopes around the world started searching for the optical counterpart, and it was discovered to be located in an elliptical galaxy, NGC4993, 130 million light years away. A large international collaboration of astronomers, including Dr Van Soelen and Szegedi, rushed to observe this source.
 
At the Boyden Observatory, Dr Van Soelen and Szegedi used the Boyden 1.5-m optical telescope to observe the source in the early evening, from 18 to 21 August. The observations obtained at Boyden Observatory, combined with observations from telescopes in Chile and Hawaii, confirmed that this was the first-ever detection of an electromagnetic counterpart to a gravitational wave event. Combined with the detection of gamma-rays with the Fermi-LAT telescope, this also confirms that neutron star mergers are responsible for short gamma-ray bursts.  
 
The results from these optical observations are reported in A kilonova as the electromagnetic counterpart to a gravitational-wave source published in Nature in October 2017.
 
“Our paper is one of a few that will be submitted by different groups that will report on this discovery, including a large LIGO-Virgo paper summarising all observations. The main results from our paper were obtained through the New Technology Telescope, the GROND system, and the Pan-STARRS system. The Boyden observations helped to obtain extra observations during the first 72 hours which showed that the light of the source decreased much quicker than was expected for supernova, classifying this source as a kilonova,” Dr Van Soelen said.

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