International Sugar Journal

An assessment of controlled release fertiliser in the Herbert cane-growing region [of Australia]* [Full subscriber]

Loss of nitrogen from sugarcane fields is of serious environmental concern and also limits sugarcane production. Losses can be significant in high rainfall environments, where nitrogen is subject to surface runoff, leaching and denitrification. Large-scale field trials were established to compare the efficiency of controlled release (CR) nitrogen (N) (39-0-0 and 37-0-0) fertiliser against urea (46-0-0) in sugarcane crops grown in the Herbert valley. Rate response curves for CR N and urea were measured on clay and solodic soils. Fertiliser was applied and cane harvested using commercial equipment. Cane yield and CCS were measured in cane supplied to the mill.…

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