University of Guilan Iranian Journal of Seed Sciences and Research 2476-3780 11 3 2024 09 22 Improve Barely yield and control important seed diseases under Zn-seed treatments and common fungicides Improve Barely yield and control important seed diseases under Zn-seed treatments and common fungicides 51 64 8792 10.22124/jms.2024.8792 FA Mehran Sharafizadeh Seed and Plant Certification and Registration Institute. Agricultural Research, education and Extension Organization (AREEO). Tehran, Iran Leila Zare Seed and Plant Certification and Registration Institute. Agricultural Research, education and Extension Organization (AREEO). Tehran, Iran Journal Article 2024 11 13 Barely seeds Cv. Goharan were exposed to six fungicide treatments Dividend star (2 per 1000), Carboxin Thiram (2.5 per 1000), Raxil (0.5 per 1000), Lamardor (0.2 per 1000), Rovral-TS (2.5 per 1000) and non-fungicide, and three Zn-seed treatments, Zn-Kavin, Zn-Zagorat and non-Zn seed treatment to evaluate yield and important barely's seed-borne diseases. Then, seeds were infected by loose smut, covered smut, and leaf brown stripe. After that, seed were cultivated in four replications in the field during two growing years based on complete randomized block design. After seed treated with three fungicide treatments (Raxil, Rovral-TS and Carboxin Thiram) was used along with Kavin and Zagorat Zn-seed treatments, mean grain yield (40 percent), biological yield (20 percent), and harvest index percent (20 percent) indexes significantly increased than control and two other fungicides. It was revealed that fungicides and Zn-seed treatments had no significant influence on barely seed germination percentage. Zn- seed treatments could not have affected on percentage of seed-borne disease. Some fungicides like Lamardo and Carboxin tiram decreased covered smut (6 percent), and, Carboxin tiram decreased covered smut (5 percent), and Rovral-TS decreased leaf brown stripe (20 percent) respectively, in comparison with control. In conclusion, it was suggested that two fungicide treatments Rovral-TS and Carboxin tiram were applied along with Kavin and Zagorat as Zn-seed treatments to boost yield and control three important barely's seed-borne diseases in the field. Barely seeds Cv. Goharan were exposed to six fungicide treatments Dividend star (2 per 1000), Carboxin Thiram (2.5 per 1000), Raxil (0.5 per 1000), Lamardor (0.2 per 1000), Rovral-TS (2.5 per 1000) and non-fungicide, and three Zn-seed treatments, Zn-Kavin, Zn-Zagorat and non-Zn seed treatment to evaluate yield and important barely's seed-borne diseases. Then, seeds were infected by loose smut, covered smut, and leaf brown stripe. After that, seed were cultivated in four replications in the field during two growing years based on complete randomized block design. After seed treated with three fungicide treatments (Raxil, Rovral-TS and Carboxin Thiram) was used along with Kavin and Zagorat Zn-seed treatments, mean grain yield (40 percent), biological yield (20 percent), and harvest index percent (20 percent) indexes significantly increased than control and two other fungicides. It was revealed that fungicides and Zn-seed treatments had no significant influence on barely seed germination percentage. Zn- seed treatments could not have affected on percentage of seed-borne disease. Some fungicides like Lamardo and Carboxin tiram decreased covered smut (6 percent), and, Carboxin tiram decreased covered smut (5 percent), and Rovral-TS decreased leaf brown stripe (20 percent) respectively, in comparison with control. In conclusion, it was suggested that two fungicide treatments Rovral-TS and Carboxin tiram were applied along with Kavin and Zagorat as Zn-seed treatments to boost yield and control three important barely's seed-borne diseases in the field. https://jms.guilan.ac.ir/article_8792_817b4a4505e31c7746aa8d2110775e5b.pdf