Utilization of Stevia Rebaudiana Agro-Industrial Residue and Poultry Litter as a Sustainable Alternative For Organic Fertilization In Maize

Objective: To evaluate the effects of composting Stevia rebaudiana associated with poultry litter on the development of maize (Zea mays L.), aiming to promote sustainable practices for soil fertility management and the utilization of agro-industrial residues as alternative sources of organic fertilization. Theoretical Framework: Organic fertilization is an essential practice for agricultural sustainability, as it improves soil structure and fertility, stimulates microbial activity, and enhances nutrient cycling. Plant- and animal-based composts, when combined, exhibit synergistic effects on nutrient availability and crop yield, reducing dependence on mineral inputs and mitigating environmental impacts. Method: The experiment was carried out in a randomized block design with nine treatments and three replications, using different proportions of S. rebaudiana compost and poultry litter (100:0, 75:25, 50:50, and 25:75), in addition to an unfertilized control. Plant height, number of leaves, ear length, weight, diameter, and average yield per hectare were evaluated. Data were subjected to analysis of variance (ANOVA), and means were compared using the Tukey test at a 5% probability level, employing the R statistical software. Results and Discussion: Treatments with higher proportions of poultry litter showed significant increases in all evaluated variables, with yield gains of up to 37% compared to the control. Organic fertilization promoted nutritional balance and enhanced microbial activity, resulting in improved plant development. Research Implications: The integration of plant and animal residues through composting proved to be an efficient strategy to increase productivity and improve soil quality. Originality/Value: The study highlights the innovative potential of Stevia rebaudiana compost associated with poultry litter as a sustainable and economically viable alternative for organic fertilization.