ARTICLE
TITLE

Quality of Grapevines – Endogenous and Exogenous Factors and Their Differing Influences

SUMMARY

Viticulture as part of agricultural cropping systems needs specific growing conditions. In particular grapevines need a specific climate and monitoring due to plant diseases. Currently, production philosophy changed from a high yielding practice to a high quality production, accepting as a consequence also lower yields. Mineral nutrition of grapevines forms the grass-roots level of yield oriented as well as of quality oriented production. Under those circumstances it is necessary to know the nutrient demands of this crop to make the proper decisions for fertilization and quality to be achieved. The mineral nutrients (kg/ha) taken up by medium – heavy crop (75-100 hL must/ha) are as follows: N – 65-75, P – 5-10, K – 65-85. Bunches alone remove: N – 25-30, P – 2-4, and K – 40-50. Figures for total uptake may serve as a general guideline for fertilization. In practice uptake rhythm of the different nutrients is more important, which leads to a reasonable nutrient application. The accumulation of nutrients in berries revealed that specific parts of the organ serve as preferred sinks.

 Articles related

Klaus SCHALLER    

Viticulture has to take care for its environments. Many impacts are generated by activities with more or less environmental severeness. Fertilization has an influence on the close-by ecosystems through transport of nutrients, which may induce adverse cha... see more


C.L. Howell,P.A. Myburgh,E.L. Lategan,J.E. Hoffman    

Possible re-use of winery wastewater for irrigation was investigated in a field trial with micro-sprinklerirrigatedCabernet Sauvignon/99 Richter in the Breede River Valley region of South Africa. Irrigation withwinery wastewater diluted to 100, 250, 500,... see more


P.A Myburgh    

yield, growth and quality. Diurnal whole-plant transpiration, to be used in combination with a soilevaporation model to estimate vineyard evapotranspiration, was quantified by measuring sap flow ingrapevines. Sap flow was measured in grapevine trunks by ... see more


J. Wooldridge,M.P. Olivier    

In a trial under semi-controlled conditions, Merlot grapevines on 101-14Mgt and 110 Richter (110R)rootstocks were grown in virgin soils developed in highly weathered parent materials derived mainly fromgranite and metasediment (shale). Each soil was irri... see more


Lucía González-Arenzana,Javier Portu,Ana R. Gutiérrez,Pilar Santamaría,Isabel López-Alfaro,Rosa López    

This study was aimed to analyze the effects of the nitrogen foliar application, and elicitation used on microbial populations of musts. The nitrogenous compounds were raw and treated wastewater from mushroom industry and a commercial yeast derivate; the ... see more