Published in Scientific Papers. Series B, Horticulture, Vol. LXIV, Issue 1
Written by Adriana BĂDULESCU, Alina FLOREA, Dorin SUMEDREA
Organic fertilizer obtained from marc is a green technology that converts organic wastes into rich nutrient organic fertilizer available for plant. This work shows how to optimize the fertilization technologies of grapes and their influence on the evolution of some biometric characteristics (number of fruit/plant, the average mass of the fruit, mean weight for 100 grape beans, production) and biochemical grape indicators (total acidity, total sugar content, anthocyanins and polyphenols content). The experimental factors underlying it the organization scheme are: A Factor - grapes varieties: ʻFeteasca Neagraʼ, ʻPinot Noirʼ, ʻMerlotʼ; B factor - quantity of marc used as an organic fertilizer, with three graduations: 3, 4, respectively 5 kg marc/plant. In all three varieties studied, the dose of 5 kg marc/plant induced a higher production and ensured statistically compared to the doses of 4 and 3 kg/plant, respectively. On the average of the studied cultivars, the dose of 5 kg marc/plant induced a higher production, which was with 0.53 kg/plant higher compared to the treatment by 3 kg marc/plant. That meant a harvest increase of over 2.4 tons per hectare.
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