KNOWLEDGE
CENTRE

Oranges [photo] 

The past three decades saw great developments in the intensive crop production industry. The increasing demand for good quality deciduous fruits and vegetables and more effective broad acre production has put greater emphasis on the quality of water soluble fertilizers, specialized liquid fertilizers and foliar products in the market place. 


KELP-P-MAX™ and K-HUMATE™ ensures better root development for sturdy seedlings.


Winterton irrigation farmer Leon Wortmann of Lew Farming CC obtained good wheat yields this past season by following the advice from the Omnia team. Terry and Marcel recommended the split-application of nitrogen (N) and sprays of OMNIBOOST™.


By Uys Meiring (Senior Technical Advisor: Specialities)

There is a close, reciprocal relationship between yield and quality of fruit. High yield almost always leads to the production of a poorer quality fruit. Despite the fact that factors such as climate, rootstock, origin of scion and irrigation affect the yield and quality of fruit, balanced fertilizer plays an important role in continuous production and high quality.


In our country with its low rainfall there are regions further west in the Northern Cape where table grapes are grown with as little as 50 mm to 150 mm of rainfall per annum. Grapes are also irrigated with water from the Orange Rivier.


Agriculture is globally the largest consumer of water and 59% of fresh water in South Africa is used for agricultural purposes. Part of this fresh water is used to irrigate citrus and therefore the agricultural sector has a responsibility to use water more effectively.


The reaction of vineyards to fertilizer inputs is highly dependent on irrigation management in irrigated areas and the two inputs cannot be separated from a management point of view. In general, greater reaction is found were water stress is confined to a minimum during the growing season.