Micronutrients uptake by wheat as affected by different N-sources and irrigation regimes in a sandy soil

摘要

The aim of this work was to study micronutrients uptake by wheat under different water supply in sandy soil. Three N-fertilizers were used namely ammonium sulfate (AS), urea formaldehyde (UF) and chicken manure (Ch. M). Treatments included three rates of nitrogen: 75, 100 and 125kg N/acre. Irrigation of the experiment followed at 30% (M<,1>), 50% (M<,2>) or 70% (M<,3>) available soil moisture depletion using sprinkler irrigation system. At maturity, yield and yield attributes were assayed. M<,2> irrigation regime gave the highest micronutrient-uptake under all N-rates and sources. Urea formaldehyde and chicken manure treatments recorded higher Fe, Mn and Zn uptake than ammonium sulfate treatment. M<,1> irrigation treatment gave higher Fe and Mn uptake compared to M<,2> or M<,3> irrigation treatments.