Abstracto
- Looking to mitigate the low implementation of techniques for the agronomic management of crops, the nutritionalbalance between what is provided by the soil, the requirements of the crop and the efficiency of fertilizers, the xcessive use of compound sources and the unavailability of studies on fertilization recommendations; the evaluation of four fertilization recommendations was made in paprika, cultivar Nathalie, during 2014-B and 2015-A, in the Research Center La Selva de Corpoica, sector Llanogrande, municipality of Rionegro (Antioquia, Colombia), at 2,020 meters above sea level and with 14 ° C average atmosphere. The treatments (T) were: T1: 250 N, 75 P2O5, 180 K2O, 90 MgO; T2: 170 N, 50 P2O5, 120 K2O, 60 MgO; T3: 100 N, 40 P2O5, 80 K2O, 40 MgO and T4: 60 N, 25 P2O5, 50 K2O, 25 MgO, the sources used were: Urea, DAP, Potassium Chloride and Magnesium Sulfate. In a split plot design, using the culture development environment as the main plot ("Open" and "Protected" field with plastic roof) and as sub-plot the treatments, distributed in complete blocks at random with three repetitions. For the variables relative crop growth rate (TCR) and yield, significant differences were found (p <0.005) in the two evaluated conditions. Under the Open condition, higher height, stem diameter and production were recorded [47% higher (74, 0 tn / ha) to the Protected (34.7 tn / ha)] and there were no significant differences between the four fertilization treatments evaluated. Based on the results for the particular conditions of soil and agroecology of C. I. La Selva, T3 treatment is recommended that allows to restore and maintain soil fertility under a rational use of simple fertilizers.
