Effects of non-mercurial fungicides on the germination and vigor of cotton, rice and soybean seeds

Abstract

This research was carried out with the main objective of studying the performance of cotton, rice and soybean seeds when treated with non-mercurial fungicides, by means of germination and vigor tests. The fungicides used were: Arasan (Thiram 75% i.a.), Panoctine (Guazatine 35% i.a.) and Terracoat (23.2% PCNB + 5,8% Terrazole). The dosage of the first product was 100 g/100 kg of seeds, whereas for the others two were 200, 400 and 600 cm³ of the commercial product/100 kg of seeds were utilized. Under the conditions of the experiment, the three dosages of Panoctine were toxic for rice seeds and the highest dosage of this product (600 cm³/100 kg) lowered cotton and soybean seed vigor. Arasan and Terracoat had no effect on germination and vigor of rice and soybean but had a beneficial effect on cotton seed vigor.