Evaluación de tres dosis de nitrógeno en el rendimiento de tres variedades de cebada maltera (Hordeum vulgare L.), en la estación experimental Tunshi.

Abstract

The objective of this research work was to evaluate three doses of Nitrogen on the yield of three varieties of malting barley (Hordeum vulgare L.) at the Tunshi Experimental Station. A randomized complete block experimental design with a 3 x 3 factorial arrangement and three replications was used. The statistical analysis was performed using ANOVA to separation from means using the LSD Fisher test at 10%. The treatments corresponded to three varieties of malting barley: Andreia, INIAP Alfa, and Cañicapa, with three doses of nitrogen fertilization: 0 kg N/ha, 75 kg N/ha, and 150 Kg N/ha, which were applied one week after planting: commercial yield kg/ha, the weight of 1000 grains, number of plants, tillers and spikes per m2, chlorophyll content by N-Tester sensor, days to germination, gleaning, and ripening, number of grains per spike. The best yield was obtained by the INIAP Alfa variety with a dose of 150 kg N/ha, obtaining a yield of 10141 kg/ha. In the agricultural optimum, the best doses for the INIAP Alfa and Andreia varieties were found to be 116 kg N/ha for a yield of 10692 kg/ha and 6765 kg/ha, respectively. For the Cañicapa variety, a dose of 87 kg N/ha was needed to obtain a yield of 8991 kg/ha. It was concluded that the doses of 75 kg N/ha and 150 kg N/ha obtained the best yields in the malting barley crop. It is recommended to crop the INIAP Alfa variety for its high yields.