Straighthead in Australian rice crops (2006)

Batten, G Campbell, L Dunn, T Lewin, L.G Dunn, B


This IREC Farmers Newsletter focuses on the Straighthead that is estimated to loose the rice industry in excess of $1 million a year in yield loss. The symptoms and consequences of straight head include the  distortion of panicles and florets with the end result of sterility, which equates to yield loss. It generally occurs where stubble is incorporated and some varieties are more susceptible or tolerant to straight head than others. Further studies are required to understand the cause of the problem. This report presents the Australian studies to date and the effects varietal types, mid season draining, organic matter reduction, nitrogen rate effects, micronutrient effects on straight head, the development of a safer method  to induce straight head and soil redox potential.