Soil and seed quality of flax grown in a conservation management system

Abstract

The aim of this work was to evaluate the edaphoclimatic conditions for the cultivation of brown flax in Dourados-MS, aiming at the best performance of the plant in the production of the seeds. Soil and seed assessments were conducted on experimental crops present in UFGD, with three brown flax genotypes: Caburé and Aguará-INTA and UFSC-Brazil. Undisturbed and disturbed soil samples were collected at two depths (0-0,16; 0,16-0,30 m) to determine soil physical and chemical properties. Random plants were selected for seed evaluation: number of capsules, number of seeds, number of seeds / capsule, acid number and oleic acid of seeds. The experimental design was a randomized block in a factorial scheme (genotype x soil depth), in three replications. The data were submitted to the Shapiro Wilk test and the variance analysis (P<0.05). The means were compared by the Tukey's test (p <0.05). The soil physical attributes were not limiting to the development of flax. The climatic factors of the region (low precipitation and high temperature) negatively influenced the reproduction phase of the genotypes. The seeds quality seeds was similar among the genotypes with emphasis on the UFSC genotype, which presented the highest number of seeds, yield, and intermediate values of acidity and capsules.