Efecto de la fuente nitrogenada en la producción de biomasa de maíz (Zea mays L)bajo condiciones de invernadero

Spanish

Abstract

N in the agroecosystem is the limiting nutrient for most crops, including corn. A plant well fertilized with N obtains good yields. N promotes photosynthesis, flowering, and even the number of seeds and weight per ear. In the fertilizer market, there are nitrogenous sources, which present various concentrations and forms of N, making it necessary in the current context to determine which sources have better absorption conditions and efficiency of use by the plant.

This experiment evaluated the response of corn to the application of 250 kg N ha-1, testing different nitrogen sources, including urea, ammonium nitrate and ammonium sulfate, under greenhouse conditions. The results show that, among the nitrogen sources, there were no significant differences, however, ammonium sulfate presented better performance for the height of corn, with 71.7 cm, stem diameter 1.61 cm, fresh biomass 83.7g/plant and dry biomass 15.16 g/plant. We can conclude that nitrogen fertilizers positively influence the growth of corn, it being important to consider the source used and the existing amount of N in the initial stages of the crop, being at this stage the source used relative, due to its high mobility of the nutrient in the soil and its easy availability for the plant