Potassium sulfate improved early growth of wheat under controlled conditions

Abstract

Experiments were conducted to evaluate NPK fertilizer effects on early growth of wheat (Triticum aestivum variety Azar-2). Chemical fertilizers including urea (100, 200, 300, 400, 500 and 1000 mg.L-1), triple superphosphate (10, 20, 30, 30 and 60 mg.L-1) and potassium sulfate (100, 200, 300, 400 and 800 mg.L-1) were used along with control in three replications. The used concentrations imitate possible status of the fertilizers in the soil solutions. The results showed that fertilizers did not alter seed germination percentage. However, there was a significant influence on seedling performance. Seedling growth under potassium sulfate applications was significantly enhanced, which was followed by triple superphosphate, but urea decreased the values. The root to shoot ratio was influenced by potassium sulfate and the ratio was decreased in all concentration. Triple superphosphate did not significant effects on seedling properties, while urea decreased seedling performance. It was concluded that the response of wheat to the fertilizers application was different and among the used materials potassium sulfate could be effective on seedling growth of wheat.