Effect of Breaks and NitrogenFertiliser on Shoot Development, Maintenance, and Cane Yield in an Irrigated Plant Crop of Q117

摘要

A rotation experiment established at the BSES Sugar Experiment Station in the Burdekin in 1994 was returned to sugarcane in late August 1998. The experiment comprised six pre-history treatments, three of which were continual sugarcane with either trash retained, trash removed, and trash removed plus fumigation immediately prior to returning to sugarcane. The other three treatments were 42 month breaks of other crops, pasture, or bare fallow. All pre-history treatments were split to four rates of nitrogen fertiliser - 0, 50 kg/ha basal, 50 basal plus 130 kg/ha at 90 days after planting, and 0 basal plus 180 kg/ha at 90 days. Shoot and stalk development and maintenance, and crop yield were measured. There was no yield difference between any of the breaks and fumigated continual sugarcane, but these treatments outyielded continual sugarcane by around 30 t/ha or 26