Abstract:
The fertilization of vine plantations aims at amplifying and intensifying the
productive capacity of fruitful vineyards, in close correlation with the effect-efficiency-
effort triad. A system of balanced fertilization, which can ensure efficiency and
economy, and also keep the environment free of pollutants, requires knowledge of
interrelations between soil, plant and fertilizer material. Obtaining some higher and
stable grape crops can be achieved by knowing all the factors involved in growth and
vine development, starting with genetic, biological, agro-phyto-technical factors and
continuing with the eco-pedologic ones that may be considered restrictive. The paper
shows the evolution of some forms of accessible nutrients and of some agrochemical
soil indices under the influence of additional fertilization in a vineyard from a
relatively homogeneous area in terms of pedologic factors, respectively Husi Vineyard.
The fertilizers used were Cx 15-15-15 and Cx 5-15-25, use fractionally in two
phenophases, bursting of buds and intense growth of the shoots, in doses of 100 150
and 200 kg/ha a.s. At the end of vegetation, in 2014, there were determined and
analyzed the content of soil with phosphorus and potassium, accessible forms, humus
content, degree of saturation in bases, carbon content, micro-elements content - B, Zn,
Cu, Mn. The use of phasal fertilizer led to the improvement of phosphorus and
potassium content, up to values of 57 and 420 ppm respectively (200kg/ha a.s.),
comparable to the optimum values. The other agrochemical indicators varied in
relation to dose and NPK ratio, confirming the effect of basic fertilization in
completion to the additional fertilization.
