5. Rice 1/2 Flashcards
Types of rice in AUS similar or dissimilar to that of south east Asia?
Dissimilar
Potential production of the rice industry as it stands today?
1 million tonnes
Rice production is heavily dependent on ….
Water allocation/availability
Rice grows in
Waterlogged/ semi aquatic conditions.
Rice PI stage prediction use the tool
PI predictor online.
Rice PI stage
Key Industry bodies of Rice in Aus (6)
- Rice Growers Association of Australia
- Rice Marketing board of NSW
- New South Wales Department of Primary Industries
- SunRice (Rice Research Australia)
- AgriFutures Australia
- Rice Extension
History of rice (5)
-1914, Japanese rice demonstration funded by vic government (Swan Hill)
- 1924, first commercial crop of rice, Griffith
- 1928, began statutory marketing arrangements through Rice Marketing Board.
- 1950, cooperative established, vertically integrated rice food business followed.
- 2003, Launch of a new breed of rice reduces water needs by 10%.
- Today, 800mil revenue p/a, >50% exports
Australian rice yield per ha
10 ton per ha
Australia’s Rice growing region
-Murray Valley Irrigation district (Denlinquin)
- Murrambidgee Irrigation Area (Leeton, Coleambaly)
Plant genus and species of rice and country/region they come from.
Asia: Oryza sativa
Africa: Oryza glabberrima
2 rice races are found
Japonica
Indica
Indica rice is grown in
Hot, tropical climates, grains are long, fluffy and do not stick together.
Japonica rice is grown in
Dry temperate climates such as Australia. Grains are sticky and moist after cooking.
Aerenchyma in rice help it too
Transfer oxygen to the roots of the rice plant.
Zadoks growth scale
0-99 scale of growth development that is recognised internationally for research.
It requires how many days from germination to get to panicle initiation?
60-100 days
International Rice Research Institute use their own growth stage scale to determine growth stage.
IRRI: 1,2,3,4,5
BBCH: 1-19, 21-24,43-53,54-77,83-99
Microspore stage is when
The pollen cells are starting to form in the anthers. Microspore stage occurs 12-14 days after panicle initiation. PI
Low temps over Microspore stage impede
sugar transfer from the plant into Microspores.
Rice tillers are generated over what periods?
Variable periods, and have varied growth characteristics due to this.
Rice grain partitioning towards the grain increased in
Drought conditions over maturity
Yield decreased occurred when drought conditions
delayed flowering.
