Efecto de 3 formas de fertilización en cultivo de Maíz variedad DAS 3383, La Troncal-Ecuador

The effect of 3 forms of edaphic fertilization, in corn (Zea mays) variety DAS 3383, on the variables (Plant height 30, 60, 90 DDS (cm); Cob insert height 70 DDS (cm) was evaluated; Cob length (cm); Cob diameter (cm); Rows of grain per ear; Weight 1000 grains (g); Cob / Grain ratio; Yield (Kg / ha-1); Economic analysis). The treatments were: T1= Supermagro enriched fertilizer: day 8 (25%), day 23 (25%), day 38 (50%); T2 = Conventional fertilizer 30 g / plant: day 8 (8-20-20% NPK), day 23 (15-3-20% NPK), day 38 (21-0-24% NPK); T3 = Witness (Without fertilizer), with 4 replicas. The experiment was carried out at the farm “Las Mercedes” of the La Troncal-Ecuador canton, lasted 130 days, under a Completely Randomized Block Design (DBCA), the data analysis was carried out through ANOVA, with Tukey’s test with (p<0.05), the calculations were performed in the InfoStaf Statistical Package version 2019. The results showed significant differences in favor of the treatment (T2) Conventional Fertilizer for the variables plant height day 30 with 96.40 cm, height Insertion of the ear 70 days with 89.05 cm, diameter of the cob 4.76 cm, weight of 1000 grains 340.25 grams and yield of 9.67 Ton/ha, being the same that in the economic analysis determined the best marginal return rate, leaving a marginal rate of 9.08% representing that for every U$ 1.00 invested the producer can recover his invested dollar and obtain an additional U$ 0.09.