What prompted the research?
Dr James Meyer (JM): It was conducted to evaluate whether the positive effects of microbe addition described in international literature could be replicated locally, and thereby challenge the limits imposed in South Africa on the reuse of agricultural wastewater for irrigation.
Growing demand for food has resulted in greater use of inorganic fertilisers, often with adverse effects such as soil degradation, acidification and reduced soil organic carbon. It has also reduced the effectiveness of inorganic fertilisers and thus an increase in the use of organic fertilisers, either alone or in combination with inorganic fertilisers, to mitigate these adverse effects.
Could you explain the methodology and main findings of the project?
JM: The research was conducted in collaboration with members of the South African Pork Producers’ Organisation and the Biotechnology Platform at the Agricultural Research Council. Three types of soil samples were obtained from three commercial piggeries in different provinces.
Each piggery supplied soil irrigated with biodegradable wastewater from the piggery, inorganic commercial fertiliser, and neither (ecological buffer zones). Additional compliance monitoring data were also obtained.
Dr Rian Pierneef (RP): The microbial DNA was extracted from these soil samples employing the sequencing library of the 16S rRNA V3-V4 regions. A bacterial barcode was sequenced to identify the bacteria in the soil and give an overview of species and diversity. This indicated the beneficial traits they might possess to improve soil quality and increase plant growth. There were clear differences in the soil’s bacterial composition among the various locations and treatment areas.
Denne historien er fra June 18, 2021-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
Denne historien er fra June 18, 2021-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
Understanding eye conditions in horses: causes and first aid
A horse can get a swollen eye from bumping it against a tree, shaking its head to keep flies away, or even snake venom
IPM requires a completely different mindset
You need to investigate any beneficial insects that may appear on your plants, or you can purchase them
Does parrot farming protect wild species?
Those in favour of commercial captive breeding argue that breeding parrots to sell can relieve pressure on wild populations. Researchers Neil D'Cruze and Rowan Martin review the evidence.
Bacterial and fungal diseases of garlic
Garlic can be prone to bacterial and fungal diseases, and it's important that farmers are proactive in preventing infection and practise appropriate management. Magda du Toit reports.
Responsible wastewater management: a crucial part of farming
The inadequate management of waste water is a challenge that the agriculture sector needs to deal with. Magda du Toit spoke to experts in waste and water management about a cost-effective treatment system.
Technology that can help protect South Africa's farms
Farm attacks, murders, livestock and crop theft, and other rural crimes are a growing concern in South Africa. As a result, more and more farmers are turning to advanced security technology to protect their lives, properties, and livelihoods. Sinenhlanhla Mncwango spoke to experts about the security strategies that producers can adopt to combat these threats.
The impact of theft on farms in South Africa
A high number of livestock are being stolen every year in South Africa. Insurance is expensive and farmers are battling to find solutions to the problem, says Dr Lindie von Maltitz, agricultural economics lecturer in the Faculty of Natural and Agricultural Sciences at the University of the Free State.
Staying afloat amid the cost-price squeeze
John Hudson, head of agriculture at Nedbank Commercial Banking, spoke to Glenneis Kriel about the importance of environmental and social sustainability for a prosperous agriculture sector.
Free State has no reason to mark Transport Month
Free State Agriculture (FSA) is very concerned about the extremely poor state of rural paved and gravel roads in the province and has very little, if anything, to celebrate during Transport Month, which takes place every October.
SA's food system ‘vulnerable to climate change'
The Just Transition Agenda for Food System Policymaking in SA webinar, hosted by the Institute for Economic Justice (IEJ) in October, highlighted the role that South Africa’s food system plays in contributing to climate change and how vulnerable it is to the impact thereof.
