Desempenho agronômico de genótipos de mandioca em condição de colheita super precoce no cerrado amapaense

Abstract

Cassava is essential in the diet of the people of Amapá, playing an important role in the food industry. However, genetic erosion emerges as a significant bottleneck, resulting in the extinction of cassava genotypes with agronomically important characteristics. It becomes imperative to collect and evaluate local genotypes to implement strategies aimed at using the genetic variability of local germplasm for the cassava industry. Thus, the objective was to evaluate the agronomic performance of cassava genotypes harvested at four months of cultivation. The experiment was conducted at the Federal Institute of Amapá, using a randomized block experimental design, with five replications, and the data were subjected to analysis of variance and Tukey's test (p<0.05). The genotypes BRS Formosa, Brs Jurará, Faria, Manivão, and Araguarí were evaluated based on the variables of seed manihot mass, root productivity, leaf mass, number of leaves, and plant height. Among the evaluated genotypes, the BRS Formosa genotype stood out with the best average root productivity, reaching 25.3 t/ha, and also showed exceptional results in leaf mass production, with averages of 9.0 t/ha. The genotypes BRS Formosa with 12.7 t/ha, Manivão 9.9 t/ha, and BRS Jurará 12.3 t/ha, are the most productive in seed manihot mass, playing a fundamental role as propagation material and animal feed. Promisingly, the evaluated genotypes from agricultural units linked to family farming stood out, highlighting the potential of communities as preservers of diversity.