Evaluación de dos tipos de fertilizantes químicos (granular y soluble), en el desarrollo vegetativo de (Pinus radiata D. Don) en etapa de vivero.

Abstract

The aim of this research was to evaluate two types of chemical fertilizers: granular and soluble, on the vegetative development of Pinus radiata D. Don in the nursery stage, in order to improve the vegetative quality of this species of forest importance. This research was carried out at the forest nursery of the Facultad de Recursos Naturales, where a Randomized Complete Block Design (RCBD) was established, composed of 3 treatments; T1 = Agrodey: granular 10N-30P-10K; T2 = Niphopos: soluble 10N-30P- 10K at a dose of 2.50 gr/plant, including the control T3 = without fertilization; with 10 replications and a total of 90 experimental units. The variables evaluated for quality and vegetative development were: hardiness index, height (cm) and collar height diameter (mm) at 15, 30 and 45 days before fertilization. For the analysis of variance and separation of means, Tukey's test was used at a reliability level of 5%. The results obtained in our research indicated that soluble fertilization (Niphopos 10N-30P-10K) showed highly significant differences in the growth and quality of Pinus radiata D. Don plants, with an increase in plant height. Don, with an increase in height proportional to its growth in diameter of: 0.52 cm (h); 0.39 mm (Dac) respectively and a robustness index of 6.24 values higher than the other treatments studied in the different periods of evaluation, with a profitability index of 1.36 whose value indicates that for every dollar invested there is a profit of 0.36 ctvs. Concluding that soluble fertilization based on fertigation is an easy source of nutrient assimilation for the roots in pine. Therefore, the use of soluble fertilization is recommended as it helps to improve vegetative development and quality.