Effect of different seed treatments on maize seed germination parameters under optimal and suboptimal temperature conditions

Abstract

The aim of this study was to determine the effect of different seed treatments on germination parameters of three maize genotypes under optimal and suboptimal temperature conditions. Seed was treated with recommended doses of three commercial pesticide formulations: metalaxyl-m 10 g/L + fludioxonil 25 g/L, metalaxyl 20 g/kg + prothioconazole 100 g/kg and thiacloprid 400 g/L. Testing was conducted at 25°C and 15°C. Results of the study indicate that there are differences in response of maize genotypes to applied seed treatments, as well as to a specific treatment at optimal and suboptimal temperatures. Some treatments, depending on the mixing partner and temperature conditions, can affect final germination. In other cases, germination rate can be accelerated or prolonged, but with no effect on final germination. In order to provide fast and uniform emergence under different temperature conditions, further examination of the response of maize genotypes to specific seed treatments would be beneficial.

Cilj istraživanja je bio da se utvrdi efekat različitih tretmana na parametre klijanja semena tri hibrida kukuruza na optimalnim i suboptimalnim temperaturama. Seme je tretirano preporučenim dozama komercijalnih pesticidnih formulacija: metalaksil-m 10 g/L+ fludioksonil 25 g/L, metalaksil 20 g/kg + protiokonazol 100 g/kg i tiakloprid 400 g/L. Ispitivanja su vršena u pesku, na 25°C i 15°C. Rezultati ispitivanja ukazuju da postoji razlika u reakciji genotipova kukuruza na primenjene tretmane, kao i na dati tretman u uslovima optimalnih i suboptimalnih temperatura. Neki tretmani, u zavisnosti od preparata koji se mešaju i temperaturnih uslova, mogu uticati na konačnu klijavost. S druge strane, brzina klijanja može biti promenjena, ali bez uticaja na konačnu klijavost. Kako bi se obezbedilo brzo i ujednačeno nicanje u različitim temperaturnim uslovima, dalja analiza reakcije različitih hibrida na date tretmane bi bila od koristi.