Resumen en español

Of the grain cereals, maize (Zea mays L.) is one of the most important due to its participation in food security, in the municipality of cerete its importance is not alien since it contributes not only to food security but also also in the economy of the ceretans, whose soils have high agricultural potential, but fertilization practices are scarce, this is why the need to relate zincbased foliar fertilization with the physiological and crop yield components with the search to improve the growth and development of maize crop. For this, a trial was established in the municipality of cerete, where 3 doses of zinc were evaluated under a randomized complete block design, the variables evaluated were: Plant Height (AP), Number of Leaves (NH), Foliar Area ( AF), Dry Mass, Cob Length (LM), Rows by Cob (HM), Grains by Rows (GH), Weight of 1000 grains (P 1000 G) and Yield (RTO). The general results showed that for the variables of the physiological component AP, NH, AF and MS did not respond significantly to zinc doses, in the same way the variables of the performance component LM, HM, GH, P1000 G and RTO did not have increasing trend with increasing doses of zinc.