Efeito de inseticidas na qualidade fisiológica de sementes de arroz submetido ao armazenamento

Abstract

It is known that the seed is one of the main agricultural inputs and its quality is one of the main factors for the establishment of the species. The objective of this work was to evaluate the influence of seed treatment with insecticide and its performance during rice seed storage. The work was conducted at the Seed Analysis Didactic Laboratory (LDAS) of the Eliseu Maciel Agronomy Faculty of the Federal University of Pelotas (UFPel), Pelotas, RS. Rice seeds of cultivar 424 RI were used. The following treatments were used: control, Cruiser Opti (400mL per 100kg of seeds), Fipronil Nortox (150mL per 100kg of seeds), Fortenza 600 FS (10,20,40,60.80 and 100mL per 100kg of seeds), the evaluations were carried out. during storage periods 0, 60, 90, 135 and 180 days after treatment. Seed quality was monitored through germination, cold and emergence tests. Under the conditions for carrying out the work, we can conclude that: Fortenza 600 FS 600 FS at doses of 60 and 80 ml/100 kg of seeds provides greater germination, maintaining this behavior up to 180 days after treatment. However, Fipronil Nortox did not differ from the witness. For the cold test, Fortenza 600 FS 600 FS at doses of 60 and 100 ml 100 kg of seeds presents superior performance when compared to the others, for the period evaluated (0 to 180 days after treatment). Fortenza 600 FS 600 FS provides better emergence of rice seeds from 40 ml per 100 kg of seeds and superior to Cruiser Opti and Fipronil Nortox, in the period analyzed (0 to 180 days after treatment).