Evaluación de la aplicación de extracto de algas marinas (Ascophyllum nodosum) y ácidos húmicos en el cultivo de brócoli (Brassica oleracea Var. Italica)

Abstract

The present research work was carried out on the property of Mrs. Gloria Chicaiza, located in the Quinta Niña María neighbourhood, belonging to the parish of La Matriz in the canton of Píllaro, province of Tungurahua. The objective of the research was to determine the type of organic fertilizer and the appropriate dose that would increase broccoli crop yields. The study factors used were: seaweed extract (F1) and humic acids (F2) at a concentration of D1 (1 g/L), D2 (1.5 g/L) and D3 (2 g/L), with a frequency of application of 15 and 30 days after transplanting for each treatment. The experimental design used was a split plot design, with the main plot being the organic fertilizers and the subplots the doses structured in randomized blocks with a total of 6 treatments with 3 replications. In addition, an analysis of variance (ADEVA) was used to determine differences between treatments, Tukey's test and the Kruskal Wallis test at 5% with which the means of the treatments were compared. Based on the statistical analyses carried out, it was determined that the treatment with the best results was the organic fertilizer based on humic acids F2 at a concentration of D3 of 2 g/L, which registered average values of 4.64 cm in stem diameter, 12.58 cm in the diameter of the pellet, 0.36 kg in the weight of the pellet and 13342, 66 Kg/ha of crop yield, however in the plant height variable there are no significant differences, so the highest results are shared by the F1D3 treatment (seaweed extract with a dose of 2 g/L) with an average of 82.79 cm and the F2D3 treatment (humic acids with a dose of 2 g/L) with an average value of 82.10 cm.