THE USAGE OF SMALL VOLUME FERTILIZERS AND BIOSTIMULATORS FOR INCREASING THE BIOPRODUCTIVITY OF THE VINE GROWING SYSTEM PUBLISHEDAlin Dobrei, Florin Sala, Alina Ghiţă, Mihaela Mălăescu
The large production of biomass which is harvested every year from the vine growing soils requires finding some modern methods, as less pollutant as possible, which would give back to the soil at least a part of the substances which the grape vine has extracted from it. The necessity of obtaining profit constrains the vine growing exploitations to permanently improve their technologies, but at the same time to take into consideration also the concept of durable vine growing. The purpose of the present research was to identify modern methods of fertilization which use chemical products in as small amounts as possible, but which at the same time assure the growing or maintaining the bioproductivity of the vine growing system at an appropriate level of efficiency. The experimental variants have consisted in using different combinations of three types of foliar chemical fertilizers and biostimulators which have replaced the classical chemical fertilizers frequently used in vine growing. These fertilizers can’t permanently replace the classical fertilizers, but used temporarily they assure a series of advantages, not only of economic nature, but also regarding the reduction of soil contamination and of vineyard products by the chemical compounds. The research has been carried out in the vineyard and ampelografic collection of S.D. Timişoara, on some breeds of table grapes in the case of which the commercial aspect is an essential factor regarding the consumer’s choice. We were mainly interested in observing the influence of these experimental variants on some quantitative but mostly qualitative aspects of production, and also their influence on the endurance of the breeds at low temperatures and freeze. The research had as a support the project: Elaboration of competitive models of vine growing technologies, in accordance with the pedo climatic conditions, grape sortiments and the principles of durable vine growing. Project IDEI, code 1128, Nr.-355/01.10.2007. Leader of project: Prof. Univ. Dobrei Alin.
fertilisation; foliar fertilisers; biostimulators; quantity; quality; table grapes