Despanojado y densidad de la población en una cruza simple androestéril y fértil de maíz

de-tasseling and plant density in a single androsterile and fertile cross of maize. the objective of this work was to determine the effect of de-tasseling on the productivity of single crosses of maize. an experiment was established the spring - summer seasons of year 2004 in rancho almaraz of the faculty of superior studies in cuautitlán of the national autonomous university of mexico (fesc-unam) located at 2,240 masl in cuautitlán izcalli, mexico. a randomized complete block design was used in the field that included three repetitions. statistical analysis was carried out in as a factorial considering the factors genotype (2), population density (3) and the treatment of de-tasseling and without detasseling (2), as well as the interactions. grain yield showed highly statistical differences for de-tasseling, and significant differences for genotype and population density, and the interaction de-tasseling x population density. the single cross version male sterile produced 8,873 kg/hectare, 17.9% higher than the fertile version, which yielded 7,521 kg/h. the population density of 80,000 plants/h and yield of 9,640 kg/h was statistically higher than the yield obtained with 50 000 plants/ha (7193 kg/h). the check without de-tasseling (9,429 kg/h) was statistically superior than the de-tasseling.