Influence of organic fertilization with vitivinicultural by-products on vine growth and fruit bearing in the Codru wine-growing region

Abstract

This study investigates the influence of organic fertilization using vitivinicultural by-products on vine growth and fruit bearing in the Codru wine-growing region. The research was conducted in the locality of Cricova, Republic of Moldova, using the wine grape variety Pinot Noir. The experimental design included three treatment variants: an unfertilized control, application of dried grape seeds, and organic fertilization with compost obtained from grape pomace mixed with cattle manure at a 1:1 ratio. Throughout the vegetation period, vine growth and fruiting parameters, overall plant condition, and cluster development were systematically monitored in relation to soil characteristics and agroclimatic conditions. The results revealed noticeable differences among the tested variants, indicating that the use of vitivinicultural by-products as organic fertilizers may support vine growth dynamics without negatively affecting vine productivitycan positively influence vine growth dynamics. The study highlights the potential of valorizing these by-products in sustainable viticulture and supports the implementation of circular economy principles within wine-growing systems.