Less water with late water- results from delayed permanent water experiment. (2009)

Dunn, B Gaydon, D Dunn, C

2009

This IREC Farmer Newsletter article presents an overview of the 1st year trial of the use of delayed permanent water in rice production in Southern NSW. It was acknowledged that delaying of permanent water resulted in reduced water use however whether water productivity ($/ML) is increased will depend on grain yield and would not be determined until post harvest. It is suggested that research into nitrogen management greenhouse gas emissions of the delayed flood practice is necessary. The article describes the experiment with overviews of measuring the benefits, the irrigation treatments, nitrogen managements, weed controls, irrigation use and crop growth. The final recommendation included the necessity to research into nitrogen management and greenhouse gas emissions using the delayed flood practice.