Efecto del uso de biofertilizantes sobre los parámetros productivos y rendimiento de col (Brassica oleracea var. capitata L.)

Abstract

Cabbage (Brassica oleracea var. capitata) is one of the most important commercial vegetables worldwide; however, in many cases a decrease in productivity has been observed, together with an increase in production costs and dependence on external inputs, which consequently represents a deterioration in the quality of life of farmers and damage to the environment. In this sense, the objective of this research was to evaluate the effect of the use of biofertilizers on the productive parameters and yield of cabbage (Brassica oleracea var. capitata). The effect of a commercial Azotobacter biofertilizer was evaluated, which was applied at the 25-day-old seedling level individually or combined with inorganic fertilizer (NPK) in presentations of 80-40-40 NPK kg.ha-1, 120-60- 60 NPK kg.ha-1 and 160-80-80 NPK kg.ha-1. A significant effect of the use of Azotobacter + F2-120-60-60 NPK kg.ha-1 on plant height was observed, which was evident from the evaluations at 30, 60 and 90 days after transplanting with means of 17.75; 32.30 and 52.68 cm, respectively. This treatment also showed the best results in diameter, pellet weight and yield, with 20.5 cm diameter pellets being obtained, with an average weight of 4.2 kg and an average yield of 116.8 t.ha1, while that with the rest of the treatments the yield varied from 66.9 to 77.5 t.ha-1, which represented a decrease of 42.9 and 33.7%. Based on the results, it was shown that the use of conventional inorganic fertilizers in combination with Azotobacter-based biofertilizers promotes the productive parameters of this crop, so it is concluded that this could be a viable option in the production of cabbage