Desprendimento de poeira no recobrimento de sementes de milho

Abstract

The objective of this study was to evaluate the use of seed coating technology with polymer films as adhesion of seed treatments with agrochemicals seeking to reduce generation of dust from seeds. Corn seeds Dow 1788, R3C gauge , round shape without treatment were used and treated with fungicide Maxim Quattro dose of 20 mL, nematicide Avicta at a dose of 70 mL and insecticide Cruiser 350 FS at a dose of 120 m , with or without polymers over 60,000 seeds. The polymers tested were 322 Disc AG and AG 9.8187 at doses of 70 and 90 mL and FloRite 1197 at a dose of 100 mL/60,000 seeds . The seeds were treated in a WN5 Niklas machine, batch , eight seconds of injection products , 10 seconds of shaking and 5 second discharge , totaling a cycle of 23 seconds per batch . After treatment , the samples were placed in paper bags and the fifteenth day after the treatment was done to evaluate the release of dust " dust off " test using the dust meter equipment " Dustmeter " Heubach following the protocol of rules to the European Code of Practice - COP established and certified by SGS Group . The experimental design was completely randomized, with a 7 x 1 ( treatments x hybrid) with three replications . The tests showed that there was shedding of dust in all treatments, therefore the use of polymers reduced significantly the shedding dust.