Evaluación de la aplicación de un bioestimulante para encallamiento y brotación sobre Juglans regia y Malus doméstica

Abstract

Asexual propagation by grafting, in addition to shortening the time to obtain seeds,also seeks to improve production, reduce susceptibility to diseases caused by nematodes and thus increase plant vigor. The present study tries to find alternatives, such as the use of biostimulants, that contribute to improving the production of apple and walnut plants with a sustainable approach, easily accessible to producers of these fruit items. Therefore, the objective was to evaluate the effect of the application of Agrostemin on Juglans regia and Malus domestica. The effect of four doses (1.0, 1.6, 2.0 and 2.5 g/L) of Agrostemin, a biostimulant product obtained from natural extracts of a marine algae (Ascophyllum nodosum), was evaluated. The results did not show an effect of the Agrostemin dose on the grafting percentage of both apple and walnut grafts, but the percentage of stranding was affected by the type of crop, being higher in applegrafts, with the highest percentages observed. in these grafts treated with 1.0 and 1.6 g/L of Agrostemin. Regarding the time of appearance and number of lateral shoots, they were not affected using the biostimulant Agrostemin, but thelength of the shoots was mainly during the initial stages of shoot formation. Also,the number of leaves per branch was affected using Agrostemin, being higher in the apple graft treated with 1.6 g/L and in the control, while in walnut grafts the best results were achieved with the application of 1.6. and 2.5g/L. Basedon the results, the use of Agrostemin in a dose of 1.6 g/L is suggested since the best results were obtained in terms of the percentage of stranding, shoot length and number of leaves per branch