Avaliação de danos mecânicos e sua influência na qualidade de semente de arroz

Abstract

Mechanical damage may be visible as cracked seeds with cracks and breaks and may be separated during cleaning by appropriate machines according to their physical properties. Some of these internally caused damages may not be detected and make the seeds susceptible to pests and fungi that, through their propagation, decrease the physiological quality of the seeds. The objective of this work was to evaluate the mechanical damage caused to rice seeds during the harvesting and storage processes, affecting the final quality of the seed. The treatments were: T1: freshly harvested seeds, T2: harvested seeds harvested 2017, T3: harvested seeds harvested 2016 and T4: control with certified and treated seeds. With these tests the weight of a thousand grains, germination test, sanity test and tetrazolium test were evaluated. Treatment 4 (control) showed better results in germination, in the sanity test and in the tetrazolium test, with no damage to the seed. The use of certified seeds is the best method for planting a crop.