CONTROLE DE QUALIDADE DO SISTEMA ON FARM: ANÁLISES ESTATÍSTICAS COM BASE EM LAUDOS TÉCNICOS E AVALIAÇÃO EM CAMPO DO MICRORGANISMO Bacillus subtilis

Abstract

The present study evaluated the production and quality control of the microorganism Bacillus subtilis in an on-farm system, aiming to ensure its viability, safety, and agronomic efficacy. The methodological approach was developed using statistical tools such as multiple regression analysis, Pearson's correlation analysis, ANOVA, pivot tables, and frequency analysis, through data collection involving technical reports and field validation results. Quality control ranged from morphological analysis under a microscope, essential for confirming the microorganism's identity and purity, to the monitoring of microbiological and environmental parameters, such as colony-forming units (CFU/mL), sporulation, pH, temperature, contamination, and process errors. The results indicated that final temperature and initial pH have a significant positive correlation with B. subtilis concentration, while operational errors increase the risk of contamination and reduce the microorganism's viability. Field trials demonstrated efficacy in controlling plant pathogenic nematodes (Meloidogyne javanica and Pratylenchus brachyurus) and contributed to increased corn and soybean productivity, in addition to improving plant uniformity and resistance. The conclusion is that the structured quality control of the On Farm system guarantees performance comparable to commercial products, constituting a sustainable, economical, and viable alternative for farmers.