Germinação de algodoeiro com semeadura em diferentes períodos após o tratamento químico de sementes

Abstract

The cotton crop has been expanding its participation in the economy and job creation in Brazil every year. For an optimal physiological and profitable performance, the plant stand of the culture becomes an essential factor in the establishment of the culture and as a means of improving the germination of the cotton plants, the chemical treatment of seeds offers the producer an option to reduce the interference of the biotic factors that may infer damage in the emergence phase of cotton plants This study aimed to verify whether the treatment of seeds with carbedazim + thiram and cyantrinilipole insecticide associated with storage for different periods could trigger the imbibition process, thus causing germination of seed before sowing and showing differences in the variables germination, seedling height and root size. The experiment was carried out in the municipality of São Desidério - BA in the year 2022. A completely randomized design was used in a 3X3 factorial scheme with four replications, with the cultivar factor being composed of the cultivars TMG31B3RF®, IMA5801B2R® and FM944GL® and the period factor being 0 , 24 and 48 hours after treatment Subsequently to the analysis and data collection, it was observed that the interaction between seed treatment and storage of treated seeds in the periods did not present a significant result, that is, they did not interfere with germination, seedling height and root size. However, when analyzing the physiological qualities of the seeds, we identified the particularities of each cultivar, where the IMA5801B2R® cultivar had the highest PMS and the largest average root size with 109.3mm and the FM944GL® cultivar had the highest germination index with 83, 8% of the seeds emerged and the highest seedling height with 127.7 mm.