INFLUÊNCIA DE DIFERENTES DOSES DE CONDICIONADOR DE SOLO NA CULTURA DA QUINOA (Chenopodium quinoa willd) EM SOLO ARENOSO

Abstract

Soils with sandy characteristics are one of the main limiting factors in agricultural production. This type of characteristic influences water and nutrient retention capacity and makes soils prone to erosion and degradation. In this context, soil conditioners can be a viable alternative to facilitate nutrient absorption by plants. This study aimed to evaluate the development of quinoa (Chenopodium quinoa Willd) under different doses of a mixed mineral fertilizer soil conditioner. The experiment was conducted in the field at the Federal Institute of Goiás – Posse Campus. A completely randomized design (CRD) was adopted, in a 5x4 factorial scheme, with 5 treatments (addition of mixed mineral fertilizer doses in the proportions of 0, 2 l/ha, 4 l/ha, 6 l/ha, and 8 l/ha), with four repetitions consisting of 20 replicates and a single data collection date (90 days after emergence). At the end of the experiment, at 90 days after emergence, the morphological characteristics were evaluated: plant height (PH), stem diameter (SD), panicle dry matter weight (PDMW), panicle fresh matter weight (PFMW), leaf fresh matter weight (LFMW), and leaf dry matter weight (LDMW). It was found that the treatment with 6 l/ha showed better average values for fresh and dry panicle weight compared to the control treatment, and the treatment with 8 l/ha showed the highest averages for plant diameter and height, indicating that under the conditions in which the work was conducted, these doses are recommended to optimize quinoa development.