Wetland plants indigenous to South Africa can remove excess nutrients from farm dams and assist in the purification of the water. SEAN ALTERN
The availability of usable fresh water is one of the main limiting factors to South African agriculture; the country experiences large annual and in-season variability in its supply of fresh water.
Farm dams are therefore an essential source of water for agricultural activities, as they bridge the gap between low- and high-flow periods by providing an efficient means for storing water.
Unfortunately, farm dams are prone to nutrient pollution, resulting in poor water quality. Increased nutrient levels lead to excessive algal growth, which can, in turn, result in the emission of harmful toxins. Furthermore, algal growth can cause major problems in farm dams by blocking irrigation systems.
This reduces the ability of these dams to provide safe, usable water for irrigation, as well as human and livestock consumption.
ENTER FLOATING WETLANDS
Floating wetlands are a budget-friendly and nature-based solution for improving water quality and increasing biodiversity. They comprise buoyant structures on which wetland plants are grown, and they use natural processes to remove nutrients and other agricultural chemicals from the water.
Plants require certain nutrients, especially nitrogen (N) and phosphorus (P), for growth. Under normal circumstances, they would obtain said nutrients from the soil through their roots.
Denne historien er fra April 01, 2022-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 April 01, 2022-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
ARC names best dairy producers of the year
The Agricultural Research Council (ARC) recently announced the winners of the 2024 National Master Dairyman Awards at an event hosted by AgriExpo in Stellenbosch, Western Cape.
Lion breeders to give up bone stockpiles?
The Ministry of Forestry, Fisheries and the Environment issued an official notice in mid-November in which it called on lion breeders to voluntarily hand over their lion bone stockpiles to the state as soon as possible.
Thousands of British farmers march on parliament against inheritance tax
Thousands of UK farmers gathered in London, England, on 19 November to demand the government repeal a proposed inheritance tax on agricultural land, which they argued threatened the future of family-run farms (see page 4), Al Jazeera reported.
Avocado frittata with sundried tomatoes, feta and olives
This wholesome, vibrant frittata is perfect for brunch or a light supper. Recipe and photo: The South African Avocado Growers' Association.
Feed, hay, and other costs are up, so it's time to get creative
Breeders and riding schools need to explore innovative ways to generate income in order to ensure their survival, says Dr Mac.
How to make polystyrene seedling trays last longer
While thinking about how to prolong the lifespan of polystyrene seedling trays that are exposed to harsh sunlight, Bill Kerr began to wonder if a coat of paint might offer a solution.
Living the 'culture' in agriculture
Creation Wines has won numerous awards, was ranked fourth in the World’s Best Vineyards in 2023, and more recently won the V d’Or award for the Best Brand Experience. The owners, Carolyn and Jean-Claude Martin, spoke to Glenneis Kriel about how their winery became a top tourism destination.
Time to take a deep breath on the slopes of the Magaliesberg
Around 100km from both Johannesburg and Pretoria in Gauteng and a tad over 40km from Rustenburg in North West, Farmer’s Weekly found a fine retreat on a working farm where couples may kindle their romance.
African penguins could be extinct by 2035 how to save them
Protecting the critically endangered African penguin is good for the environment, other animal species, and the economy, say Lorien Pichegru and Dr Alistair McInnes of Nelson Mandela University, Katrin Ludynia of the University of Cape Town, and Peter Barham of the University of Bristol in the UK.
An urgent need to confront Nassella in SA
South American grass species from the genus Nassella were unwittingly introduced to South Africa over 120 years ago and continue to invade montane veld. As Mike Burgess writes, research-based action is required.