THE INFLUENCE OF ENVIRONMENTAL RESOURCES SPECIFIC TO THE CULTIVATION YEAR OVER THE GRAPEVINE GROWTH AND YIELD

Abstract

The ecological offer holds an important role in establishing the grapevine areas. The pedo-climatic conditions influence the intensity of the physiological and biochemical processes inside the plant, determine the length of the vegetation period, influence the hydro-mineral feeding system, the quality of crops, and offer singularity to the grapes and wines obtained on a certain area, expressed by the specificity of the viticultural area. Grapevine cultivation with superior productive results requires, besides the biological characteristics of the cultivated soil, the continuous appreciation of the ecological favourableness of the space used for this purpose, in order to identify and then apply the most appropriate counter measures according to the variation of the pedoclimatic conditions.

Grapevines are multiannual plants, hence the significant importance of the influence of the annual ecological offer over production, especially its quality.The knowledge of morphological, physiological and biochemical particularities determined by the pedoclimatic conditions is important for the elaboration and support of viticultural technical activities. Grapevines have the ability to adapt to various environmental conditions, however extremely high temperatures (over 35⁰ C) or heatwaves often associated with drought may affect the grapevine physiology and yield.

This study was focused on the influence of the environmental resource variation over the intensity of certain physiological processes (photosynthesis, transpiration, stomatal conductance), as well as over the growth and fruit bearing of certain grapevine varieties cultivated in Dealurile Craiovei viticultural region.