Respuestas del maíz (Zea mays L.) a la fertilización orgánica y química durante la etapa de desarrollo vegetativo en la zona de Santa Ana -Manabí

Abstract

Maize (Zea mays L.) is one of the most important species in the world, because it is one of the basic foods and with great economic importance, as well as one of the main ones in Ecuador. The main objective of this research work was to evaluate the response of corn to organic and chemical fertilization during the vegetative development stage of the crop. This research work was carried out in the Experimental Campus of the Faculty of Agricultural Engineering. Vea used a Randomized Complete Blocks experimental design with three replicates and 30 experimental units. As study factors were the sources of fertilization: Compost, Urea + Triple Super Phosphate (SPT) + Potassium Chloride (KCl), Compost + Urea + Triple Super Phosphate (SPT) + Potassium Chloride (KCl) and fertilization doses. Chemistry N-P-K of 66-23-30; 132-46-60; 198-69-90 and a control without fertilizer application, in which growth variables, relative chlorophyll content and foliar nitrogen concentration were evaluated. The results determined that there are better responses to organic and chemical fertilization, in the treatments of C+ U+SPT+KCl and U+SPT+KCl with doses of NPK 198-69-90 for most of the variables evaluated with the exception of content. Of foliar N since it did not respond to the tested factors or to the combination of them, the sources much less the tested doses had an effect on the foliar N content.