Evaluación de tres densidades de siembra al voleo en cuatro materiales de cebada maltera (Hordeum vulgare L.) en la Estacion Experimental Tunshi

Abstract

The aim of this research was to evaluate three different broadcast sowing densities of four malting barley (Hordeum vulgare L.) materials under field conditions. This study was carried out at Tunshi experimental station of ESPOCH. The methodology implemented was a randomized complete block design, bifactorial, with 3 replications, where Factor A was the sowing densities (100, 125 and 150 kg of seed per hectare) and Factor B was the barley material (var. ABI Voyager and three lines 2IK16-0671, 2IK16-0710 and 2IK16-0812). The Tukey test at 5% was used for mean comparisons. The following variables were evaluated: number of live plants, days to thinning, days to heading, days to lodging, days to heading, days to flowering, days to physiological maturity, plant height, ear length, number of grains per ear, number of tillers, number of effective ears, humidity in percentage, weight in grams, caliper in grams, thousand gram seed weight, hectoliter weight, rust severity and economic analysis of the treatments. The results highlight the 21K16-0812 line with higher earliness as well as the sowing density of 150 kg.ha-1, similar in the interactions 21K16- 0812x100 kg.ha-1 and 21K16-0812x125kg.ha-1. The highest yield was with a density of 150 kg.ha-1, being the best cost benefit for ABI Voyager with a planting density of 125 kg.ha-1. In this context, it is concluded that the best barley material was 21K16-0812 for being early and the sowing density of 150 kg/ha for having higher yield, as well as an acceptable cost benefit.