Evaluación de dos formulaciones de fertilización química en forma edáfica en dos épocas de aplicación, con tres dosis de fertilización foliar, en el cultivo de cebolla colorada (Allium cepa. Var. Burguesa)

Abstract

The present research proposes: to evaluate two formulations of chemical fertlization in edaphic form in two seasons of application, with three doses of foliar fertilization, in the cultivation of red onion (Allium cepa. burguesa. variety), Riobamba creek, Chimborazo province; using a randomized complete block (BCA) statistical model, with thirteen treatments and three replicates. The following parameters were evaluated: plowing, number of leaves, plant height, days at harvets, bulb shape, net bulb weight and yield per hectare, and an economic analysis was performed based on the Cost Benefit ratio. The best results in terms of height, number of leaves, trait weight per net plot and yield obtained in the formulation of DAP + Urea + Muriato of K 75% sowing + 25% rascadillo + 5 cm3.L-1 of foliar fertilizer (T2), which presents a contribution of 105 Kg N.ha-1, 120 Kg P2O5.ha-1 and 135 Kg K2O.ha-1 in the sowing and 35 Kg N.ha-1, 40 Kg P2O5.ha-1 and 45 Kg K2O.ha-1 in the rascadillo + 2,13 Kg K2O.ha-1 of foliar fertilization, in addition is rented formulation greater benefit (B/C) of $ 2,21 and a profitability of 121%. From an agronomic and economic point of view with a fertilization dose of 140, 160 y 180 Kg.ha-1 of nitrogen, phosphorus and potassium respectively, it is recommended to use the compound formula of DAP + Urea + Muriato de K 75% planting + 25% rascadillo + 5 cm3.L-1 of foliar fertilizer, which presents a contribution of 105 Kg N.ha-1, 120 Kg P2O5.ha-1 and 135 Kg K2O.ha-1 at planting and 35 Kg N.ha-1, 40 Kg P2O5.ha-1 and 45 Kg K2O.ha-1 in the + 2,13 Kg K2O.ha-1 leaflet of foliar fertilization (T2) yielding a yield of 49,86 t.ha-1.

Keywords: CHEMICAL FERTILIZATION - COLORED ONION - FOLIAR FERTILIZATION.