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Estimates of rice production in Australia and Laos in 1998.
Australia |
Laos | |
Planting Method |
Aerial sowing (90%) |
Transplanting (100%) |
Rice area (ha) |
139, 902 |
650, 000 |
Total annual rice production (tons) |
1.32 million |
1.67 million |
Average yield (t/ha) |
9.42 |
2.7 |
Export (%) |
85 |
10 |
Percentage of cropped land (%) |
0.76A |
80 |
Irrigated land (%) |
100 |
8.3 |
A Calculated from ABARE's (2000) commodity report
Comparison of average minimum and maximum temperatures during 1 month of establishment at Yanco Agricultural Institute, Australia, and 6 provinces in Laos.
Month |
Location |
Country |
Min |
Across A |
Within B |
Max |
oC |
cv% |
cv% |
oC | |||
Nov |
Yanco |
Australia |
12.3 |
10.0 |
32.4 |
26.6 |
Dec |
Luang Namtha |
Laos |
15.0 |
8.2 |
16.9 |
24.6 |
Dec |
Oudomxay |
Laos |
11.5 |
16.0 |
26.3 |
24.5 |
Dec |
Houaphanh |
Laos |
11.1 |
11.9 |
28.4 |
20.8 |
Dec |
Xieng Khouang |
Laos |
8.3 |
22.1 |
38.6 |
21.6 |
Dec |
Vientiane |
Laos |
17.2 |
7.4 |
13.9 |
28.3 |
Dec |
Champassak |
Laos |
18.5 |
- |
- |
31.2 |
A Coefficient of variation across years relative to the mean
B Coefficient of variation within years relative to the mean
Figure 1 The long-term maximum and minimum temperatures of Yanco, Australia compared to six provinces in Laos. (A) Luang Namtha, (B) Oudomxay, (C) Houaphanh, (D) Xieng Khouang (E) Vientiane, and (F) Champassak.
Figure 2 Effect of temperature on biomass per seedling, 41 days after sowing from a sub-set of cultivars displaying variation in temperature response. Vertical bars indicate standard error.
Figure 1 (A) Average temperature from November 1 to December 31 and PI Nitrogen uptake for Amaroo crops sown early October 1-7 from 1990-2000, (B) nitrogen uptake plotted against grain yield for Amaroo crops from 1989-2000, and (C) average temperature plotted against grain yield. The correlation of (B) and (C) does not include 1996, which experienced yield reduction due to low temperature during the reproductive phase (late January -early February).
Figure 4 (A) Number of engorged pollen grains per anther regressed against intercepted pollen per stigma for Amaroo. (B) Number of engorged pollen grains per anther plotted against spikelet sterility (Gunawardena, unpublished).
Figure 5 Temperature variability between the microspore period in Yanco and alternative periods in five Laos provinces. Champassak data was not available.
