Initial Growth of Corn Using Human Urine, Cassava Wastewater and Cattle Manure as Source of Nutrients

Abstract

The present study aimed to analyze the initial growth of the corn hybrid AG 1051 cultivated in soil fertilized with human urine, cassava wastewater and cattle manure. The experimental design was completely randomized with four replicates and eight treatments: T1 (Control -without fertilization), T2 (HU -Human urine), T3 (CW -Cassava wastewater), T4 (BM -Cattle manure), T5 (BM + HU -Cattle manure + Human urine), T6 (BM + CW -Cattle manure + Cassava wastewater), T7 (HU + CW -Human urine + Cassava wastewater) and T8 (HU + CW + BM -Human urine + Cassava wastewater + Cattle manure). ESI (emergence speed index) and E% (emergence percentage) were determined by daily counting all seedlings emerged in a period of seven days and, at 15 DAS (days after sowing), plant height was measured. The use of cattle manure led to higher ESI and E% compared with the other treatments, as well as the variable plant height. For production variables, T5 caused highest increment in shoot dry phytomass and there were no significant differences between treatments for shoot dry phytomass. It was concluded that T4, T6 and T5 led to higher performance in the initial growth stage.