Matching your rice variety to your N Management (2000)

Hume, I Beecher, G Dunn, B

2000

Detailed research into the effect on nitrogen (N)fertiliser on four varieties reveals that the main differences between the tested varieties is due to length of season, and not due to grain type (ie. long grain v medium grain).  The higher yield of Namaga compared to Amaroo was seen in these experiments at low and medium N rates because of a greater percent grain.  At very high pre-flood N rates (240 Kg N/ha), Namaga and Amaroo had the same yield.   Treat all short straw rice similarly in regards to nitrogen application.  Possibly increase pre-flood N rates in Langi by a half bag per acre to obtain the same N uptake at PI as Amaroo and Namaga.