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Results for “Phosphorus”
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Winery wastewater irrigation (Part 6): Effect on soil phosphorus
The objective of this study was to determine the effects of irrigation with diluted winery wastewater on soil P of four soils varying in parent material and clay content.
By Reckson Mulidzi & Carolyn Howell · 13 min read
Getting the most out of applied phosphorus (P) - understanding soil P relations in vineyard soils
The vineyard industry is evolving rapidly – new soil conditioners, precision tools and AI-driven decisions are becoming commonplace. Yet, as Jean-Baptiste Alphonse Karr famously wrote, “The more things change, the more they stay the same.”
By VIVIAN WHITE · 7 min read
Liming through drip irrigation
For optimal growth and yield, the soil pH has to be correct.
By Doronae · 4 min read
Management and re-use of treated winery wastewater (Part 2): Dairy and municipal wastewaters in New Zealand
Carolyn went to New Zealand to participate in a technical tour focussing on the management and re-use of treated winery wastewater, with particular reference to
By Carolyn Howell · 7 min read
Nitrogen and sulphur foliar fertilisation (Part 1): Background and context
PHOTO: Shutterstock.
By Astrid Buica, Aléta Bruwer & Wessel du Toit · 11 min read
Leafroll disease or deficiency symptom?
Grapevine leafroll disease is the most important viral disease of grapevines in South Africa. It is thought to have a significant impact on the sustainability of the wine industry, impacting both the qualitative and productive lifespan of our vineyards.
By Etienne Terblanche · 8 min read
Seaweed-based biostimulants in Vitis vinifera
Little is known about the impact of seaweed extracts in grape production and their influence on grapevine physiology, and stress adaptation mechanisms.
By Liam Samuels, Evodia Setati & Erna Blancquaert · 10 min read
Managing for optimum root health
Plant health is dependent on root health which is ultimately dependent on soil health.
By Prabashnie Ramouthar · 19 min read
Manganese deficiencies
During the past season, symptoms of manganese deficiency were relatively commonly observed in wine grapes in the Coastal Region areas.
By Hanno van Schalkwyk · 4 min read
Treated municipal wastewater for irrigation (Part 1): Irrigation application and water quality
This study’s objectives were to assess the quality of treated municipal wastewater (TMW) used for irrigation of commercial vineyards and to quantify the amount of plant nutrients applied via TMW irrigation.
By Carolyn Howell, Karla Hoogendijk, Philip Myburgh, Vink Lategan & Eduard Hoffman · 15 min read
