The effect of nitrogen on the growth and development of grafted cuttings from the nursery

Abstract

The complex of agrotechnical measures that ensures a high yield of standard planting material and a favorable impact on the growth and development of woody plants is represented by both the grafting technique and the nutritional elements applied in the nursery. This paper studies the effect of nitrogen on the growth yield of vine school plants in the soils of Stefanesti Arges, for four cultivars of table grapes Argessis, Norocel, Memory and Stefanesti, grafted on SO4-4 rootstock. After forcing, the grafted cuttings were paraffined with silver paraffin planted in a protect (solar) space, and subjected to 2 fertilization treatments with increased doses of nitrogen: 100 of the Optimal Dose and 75% of the D.O. Increased amounts of nitrogen positively influenced vegetative growth but inhibited root development, regardless of the cultivar. The length of the main shoots oscillated between 43.36 when applying 100% DO fertilization to the Argessis cultivar and 17.88 cm for 75% D.O. fertilization to the Memory cultivar. On the other hand, the total 100% D.O. fertilization led to a decrease in the diameter of the roots, for the first 3 main roots measured. From a nursery production standpoint , N, P, K are the nutrients that often need to be applied as fertilizer for optimal plant growth in the controlled space. In-depth studies are needed over several years to establish the effect of nitrogen on profitable yields from the school of vines