Evaluación del efecto de dos compensadores de horas frío en el rendimiento del cultivo de papa (Solanum tuberosum L.) variedad única pera

Abstract

The present study, based on the production of (Solanum tuberosum L.) single pear variety by seed-tuber that was previously induced with chilling time compensators: Dormex and Urea, and a control that was not treated with any inductor, was developed in the Santa Marianita sector of the Mocha canton, province of Tungurahua, with the purpose of evaluating the effect of the chilling time compensators on the yield of the crop of potato (Solanum tuberosum L.) single pear variety. The response variables evaluated were: plant height, number of aerial stems, number of tubers per plant, longitudinal and central diameter, weight of tubers per plant, days to sprouting, days to harvest and yield. A completely randomized block experimental design was used in group analysis with 3 replications. The data obtained were analyzed using Tukey's test at 5%, giving the following results: in plant height, T2D1 (Dormex 50 cc/L) with 84.40 cm plant height and the control with 74.73 cm was the one with the lowest yield. In number of aerial stems per plant, T2D1 (Dormex 50 cc/L) had 12.33 stems, standing out from the rest and, unlike the control, only 6.80 aerial stems. In number of tubers per plant, T2D1 (Dormex 50 cc/L) had 42.80 tubers, being superior to the control, which only obtained 27.07 tubers per plant. In equatorial diameter, T2D1 (Dormex 50 cc/L), with 9.39 cm, occupied first place while the control only obtained 7.78 cm. In polar diameter, T2D1 (Dormex 50 cc/L) ranked first with 7.67 cm, while the control was last with 6.31 cm. In tuber weight per plant, T2D1 (Dormex 50 cc/L), with 2145.40 g, was far superior to the Witness, which had 1614.07 g. In days to sprouting, group 2 (Dormex) sprouted at 27 days, group 1 (Urea) at 29 days and the control at 35 days. In days to harvest, group 2 (Dormex) was at 120 days, group 1 (Urea) at 128 days and the Witness at 150 days. Finally, in yield, T2D1 (Dormex 50 cc/L) was the best treatment for the first category with an average of 3541.31 kg/ha, for the second category with an average of 1595.70 kg/ha, for the third category 1494.20 kg/ha and for the fourth category with an average of 221.11 kg/ha