Eficacia de la nutrición foliar con 2 soluciones nutritivas y 4 dosis, en el rendimiento del cultivo de papa (Solanum tuberosum L. var Cecilia) en la estación experimental Tunshi - ESPOCH.

Abstract

The present reserch raises: determine the efficacy of foliar nutrition with two and four doses nutrient solutions in crop yield of potato (Solanum tuberosum L. var Cecilia) in the experimental station Tunshi- ESOCH. Licto parish in Chimborazo province. Split plot design was used where the main plot was the Solucions factor (nutrient solution 1 and nutrient solution 2) and the doses used were small plots, the experiment had three replicates per treatment. Nutrient solutions (NS) changed their chemical composition during the phenological development of the crop. NS1 to stage 1 was; nutri-tha root, to stage 2 was ; nutri-tha plus and then nutri-tha calcium boron, for stage 3 was; nutri-tha magnesium + nutri-tha thicken and to stage 4; nutri-tha thicken. The NS2 was: for stage 1 nutri-tha root + nutri-tha calcium boron, for stage 2 nutri-tha plus + nutri-tha calcium boron, for stage 3 nutri-tha magnesium + nutri-tha calcium boron and then nutri-tha thicken + nutri-tha calcium boron, for stage 4; nutri-tha thicken + nutri-tha calcium boron.Dose factor was evaluated in high doses (7.5 cc/L), medium (5.0 cc/L), low (2.5 cc /L) and control (0.0 cc/L).Spray leaf was performed every 15 days. The response variables were: emergency, plant height, number of stems per plant, flowering, senescence, tuber yield per category, total return.It is concluded that the best agronomical doses was the high doses (7.5 cc/L of the NS1) with a total performance of 34,62 Tn/Ha, the best economical option is obtained when we go by the control to the low doses (2.5 cc/L of the NS1 ) because it presents a TMR of 247,48%. It is recommended to implement the study of the sheet of optimun irrigation to increase crop yield. Keyword: foliar nutrition, nutritive solutions, Cecilia crop potato.