Seafood Value Chain

An argument can be made that every effort should be made to convert low-value fish into foods for direct human consumption rather than the inefficient conversion into fishmeal and then food fish via aquaculture. This argument is based on economic and ethical (Sustainable Development) ideas. For example, the small trash fish form part of the…

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Biodiversity

The issues of climate change and biodiversity are deeply intertwined. The United Nations Framework Convention on Climate Change and the Convention on Biological Diversity, the international treaties charged with solving two of the biggest problems of the 21st century, were both due to hold make-or-break meetings in 2020. COVID-19 – yet another crisis with strong connections to the other two –…

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Vines

By choosing the right cultivars and adapting their irrigation regimes in young vineyards, winegrowers may mitigate the expected effect of climate change in coming years. This is according to Dr Hanlé Theron, who recently obtained her doctorate in viticulture from Stellenbosch University. She studied under the supervision of Dr Kobus Hunter at the Agricultural Research…

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A roadmap to resilience for Western Cape agriculture

The Western Cape has been prone to numerous climate-related extremes such as droughts, heavy rain, floods, storms (with strong wind and hail), wildfires and plant and animal pest and disease outbreaks over the last number of years. These are a natural feature of the climate of the Western Cape and will continue as part of…

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Water scarcity

“Water scarcity is the next big threat we face in the coming months as the Coronavirus pandemic spreads, particularly in our country where there is a wide gap between ‘first’ and ‘third’ worlds. Not having access to water to frequently wash hands, could mean the difference between life or death for some.” There is another…

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Drip irrigation

The purpose of an irrigation system is to apply the desired amount of water, at the correct application rate and uniformly to the whole field, at the right time, with the least amount of non-beneficial water consumption (losses), and as economically as possible. Irrigation systems in use are classified as follows: Flood or gravity irrigation…

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Aquaponics

The integration of aquaculture and the hydroponic cultivation of plants has been examined repeatedly over the past five decades with a wide variety of system designs, plant and aquatic animal species, and experimental protocols. Closed, recirculating systems have generally been identified as the most appropriate aquaculture system types for integration with hydroponics because nutritional and…

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Shade house

A Shade house is a structure enclosed by nets or any other woven material to allow required sunlight, moisture and air to pass through. It creates an appropriate micro-climate conducive to the plant growth. It is also referred to as shade net house or net house. What is shade cloth? Shade cloth was developed over…

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