




The Bureau of Meteorology map of winter rainfall (June to August 2009) illustrates that winter rainfall over the grains belt was mixed (map 1). Most of Western Australia, South Australia and Victoria received average to above average winter rainfall. The majority of southern and central New South Wales also received average rainfall. However, most of northern New South Wales and Queensland received below to very much below average winter rainfall.

Details of rainfall received in the April to August growing period are provided in table A.
The Australian Bureau of Meteorology, in its latest seasonal rainfall outlook (26 August 2009) for the September to November period, indicates there is a moderate to strong shift in the odds favouring below average spring rainfall across parts of eastern and southern Australia. However, there is an increased chance of above average spring rainfall for south-west Western Australia.
For spring, the chance of exceeding average rainfall is less than 40 per cent across the northern half of Queensland, southern New South Wales west of the Great Divide, much of South Australia and Victoria, and large parts of Tasmania. Chances drop to around 25 per cent in vast areas of the South Australian grains belt. In contrast, the chances of exceeding average spring rainfall are between 60 per cent and 65 per cent throughout south-west Western Australia.
The national outlook for maximum temperatures over spring shows a moderate to strong shift in the odds toward warmer than normal conditions across most of Australia. The chance of average spring maximum temperatures exceeding the long-term average is more than 60 per cent across most of the continent, with 65 per cent chances in northern New South Wales and 70 to 85 per cent across Queensland.
A April - August rainfall in major grain growing regions |
|||||||
|---|---|---|---|---|---|---|---|
average a |
2007 |
2008 |
2009 |
2007 |
2008 |
2009 |
|
mm |
mm |
mm |
mm |
% of average |
% of average |
% of average |
|
| Queensland | |||||||
| Central Highlands (35) | 145 |
162 |
121 |
107 |
112 |
83 |
74 |
| Maranoa (43) | 156 |
133 |
106 |
138 |
85 |
68 |
89 |
| West Darling Downs (42) | 162 |
157 |
124 |
177 |
97 |
77 |
109 |
| East Darling Downs (41) | 192 |
181 |
119 |
183 |
94 |
62 |
95 |
| Moreton South Coast (40) | 333 |
290 |
258 |
384 |
87 |
77 |
115 |
| New South Wales | |||||||
| North West Plains (W) (52) | 168 |
157 |
123 |
161 |
93 |
73 |
96 |
| North West Plains (E) (53) | 195 |
191 |
131 |
171 |
98 |
67 |
88 |
| North West Slopes (N) (54) | 208 |
221 |
130 |
163 |
106 |
63 |
78 |
| North West Slopes (S) (55) | 221 |
262 |
180 |
166 |
119 |
82 |
75 |
| Northern Tablelands (N) (56) | 239 |
272 |
174 |
274 |
114 |
73 |
115 |
| Central West Plains (S) (50) | 185 |
174 |
116 |
168 |
94 |
63 |
91 |
| Central West Plains (N) (51) | 175 |
144 |
107 |
183 |
82 |
61 |
105 |
| Central West Slopes (N) (64) | 223 |
255 |
153 |
149 |
114 |
69 |
67 |
| Central West Slopes (S) (65) | 235 |
232 |
157 |
190 |
99 |
67 |
81 |
| Central Tablelands (N) (62) | 234 |
337 |
176 |
170 |
144 |
75 |
73 |
| Central Tablelands (S) (63) | 331 |
346 |
203 |
271 |
104 |
61 |
82 |
| Riverina (W) (75) | 155 |
133 |
98 |
142 |
86 |
63 |
92 |
| Riverina (E) (74) | 208 |
163 |
128 |
170 |
79 |
62 |
82 |
| South West Slopes (N) (73) | 259 |
229 |
180 |
234 |
88 |
69 |
90 |
| South West Slopes (S) (72) | 386 |
312 |
275 |
377 |
81 |
71 |
98 |
| Southern Tablelands (GM)(70) | 255 |
299 |
160 |
203 |
117 |
63 |
80 |
| Victoria | |||||||
| North Mallee (76) | 139 |
154 |
114 |
142 |
111 |
82 |
102 |
| South Mallee (77) | 163 |
168 |
132 |
175 |
103 |
81 |
107 |
| North Wimmera (78) | 198 |
188 |
154 |
216 |
95 |
78 |
109 |
| South Wimmera (79) | 257 |
263 |
208 |
292 |
102 |
81 |
113 |
| Lower North (80) | 197 |
166 |
133 |
165 |
84 |
67 |
84 |
| Upper North (81) | 243 |
223 |
177 |
219 |
92 |
73 |
90 |
| Lower North East (82) | 391 |
359 |
299 |
395 |
92 |
77 |
101 |
| Upper North East (83) | 546 |
445 |
333 |
395 |
82 |
61 |
72 |
| North Central (88) | 354 |
307 |
254 |
275 |
87 |
72 |
78 |
| Central Western (89) | 295 |
305 |
238 |
301 |
103 |
81 |
102 |
| South Australia | |||||||
| Upper South East (25B) | 224 |
216 |
203 |
237 |
97 |
91 |
106 |
| Murray Mallee (25A) | 146 |
141 |
130 |
107 |
97 |
89 |
73 |
| Murray River (24) | 160 |
145 |
150 |
159 |
91 |
94 |
99 |
| East Central (23) | 339 |
301 |
299 |
347 |
89 |
88 |
102 |
| West Central (22) | 252 |
279 |
256 |
339 |
111 |
101 |
134 |
| Lower North (21) | 228 |
173 |
203 |
228 |
76 |
89 |
100 |
| Upper North (19) | 158 |
97 |
121 |
129 |
61 |
77 |
82 |
| Western (18) | 187 |
117 |
116 |
158 |
63 |
62 |
85 |
| Western Australia | |||||||
| North Coast (8) | 277 |
146 |
231 |
244 |
53 |
83 |
88 |
| Central Coast (9) | 608 |
430 |
461 |
437 |
71 |
76 |
72 |
| Northern Central (10) | 232 |
158 |
207 |
199 |
68 |
89 |
86 |
| South Coast (9A) | 602 |
459 |
478 |
462 |
76 |
79 |
77 |
| South Central (10A) | 271 |
218 |
248 |
204 |
80 |
91 |
75 |
| South East (12) | 130 |
73 |
75 |
98 |
56 |
58 |
76 |
| Tasmania | |||||||
| Northern (91) | 525 |
534 |
436 |
721 |
102 |
83 |
137 |
| Midlands (93) | 229 |
199 |
150 |
380 |
87 |
65 |
166 |
| a Average from 1913 to 2009. | |||||||
Spring minimum temperatures are also forecast to be warmer than average across most of the country, with the exception of Tasmania and areas east of the Great Divide. The chances of increased minimum temperatures are between 60 per cent and 80 per cent over most of Australia, and more than 80 per cent in parts of Western Australia.
If the seasonal outlook from the Bureau of Meteorology is realised, it is likely to have a negative effect on yields, particularly in the southern and eastern states.
A number of organisations provide forecast yields for grains, including wheat and sorghum. The shire scale wheat forecasting system of the Queensland Department of Primary Industries and Fisheries combines starting soil moisture conditions with the seasonal outlook, including the most recent trend in the Southern Oscillation Index (SOI). The probability of exceeding average wheat yields at the beginning of September (map 2) is close to average in most regions, with the exception of large areas of Queensland, parts of central New South Wales and central Victoria.

Almost the entire central Queensland and south-west Queensland cropping region show a forecast median yield much below the long-term average (20 to 40 per cent below). Most areas in south-east Queensland have forecast yields similar to the long-term average. In New South Wales, the chances of exceeding long-term average yields is close to average throughout the state, with the exception of parts of north-west New South Wales and the central west, where yields are forecast to be 20 to 40 per cent below average. Throughout Victoria, the chances of exceeding long-term median yields are around average, with the exception of parts of the southern Mallee and central north, where yields are forecast to be 20 to 40 per cent below average. In both South Australia and Western Australia, the chances of exceeding median yields are average throughout the entire winter cropping region.

Winter cropping regions in Western Australia, South Australia and Victoria received average to above average winter rainfall. Conversely, most of Queensland and northern New South Wales received below to very much below average winter rainfall, with August being a particularly dry month across both states. The lack of rainfall, combined with above average temperatures, have resulted in crops in many areas of the two states (including southern and central New South Wales) suffering moisture stress in the critical spring growth phase.
Total winter crop production in 2009-10 is forecast to be around 36 million tonnes (table B). This is an upward revision from ABARE’s June 2009 forecast of 34.8 million tonnes. Dry seasonal conditions have resulted in a downward revision of forecast production for both New South Wales and Queensland. However, this has been more than offset by upward revisions for Victoria, South Australia and Western Australia. The total area sown to winter crops in 2009-10 is estimated to have increased by 2 per cent to slightly more than 22.2 million hectares (table C).
B Winter crop production - Australia a |
||||||
|---|---|---|---|---|---|---|
New South Wales |
Victoria |
Queensland |
Western Australia |
South Australia |
Australia |
|
Kt |
Kt |
Kt |
Kt |
Kt |
Kt |
|
| 1997-98 | 8 558 |
3 398 |
1 637 |
12 097 |
5 360 |
31 116 |
| 1998-99 | 9 718 |
3 495 |
2 322 |
12 232 |
6 305 |
34 159 |
| 1999-00 | 11 495 |
5 139 |
2 222 |
13 311 |
4 751 |
36 981 |
| 2000-01 | 10 834 |
6 232 |
1 340 |
8 726 |
7 486 |
34 696 |
| 2001-02 | 11 171 |
5 873 |
1 142 |
12 050 |
8 927 |
39 240 |
| 2002-03 | 3 505 |
1 955 |
836 |
6 812 |
4 227 |
17 402 |
| 2003-04 | 10 768 |
6 945 |
1 473 |
16 683 |
7 450 |
43 395 |
| 2004-05 | 10 724 |
4 203 |
1 383 |
12 472 |
5 849 |
34 711 |
| 2005-06 | 11 867 |
6 170 |
1 426 |
13 922 |
7 518 |
40 985 |
| 2006-07 | 3 837 |
1 787 |
907 |
8 253 |
2 792 |
17 613 |
| 2007-08 | 4 000 |
4 711 |
1 195 |
10 750 |
4 713 |
25 433 |
| 2008-09 s | 9 653 |
3 081 |
2 190 |
13 563 |
4 599 |
33 149 |
| 2009-10 previous | 9 823 |
5 189 |
2 104 |
11 415 |
6 169 |
34 771 |
| 2009-10 f | 9 123 |
5 549 |
1 687 |
12 977 |
6 549 |
35 961 |
| % change 2008-09 to 2009-10 | -5 |
80 |
-23 |
-4 |
42 |
8 |
| a State production includes wheat, barley, oats, canola, lupins, field peas, chickpeas, faba beans and lentils. Australian totals also include triticale, linseed and safflowerseed. f ABARE forecast. s ABARE estimate. Note: Previous refers to the numbers published in the previous issue of the Australian crop report. |
||||||
Of the major winter crops, wheat production is forecast to increase by around 6 per cent to 22.7 million tonnes in 2009-10. Barley production in 2009-10 is forecast to be around 7.9 million tonnes, a 16 per cent increase from the previous season. Canola production is forecast at around 1.7 million tonnes in 2009-10, 8 per cent less last seasons harvest, reflecting an expected decline in yields, particularly in Western Australia.
C Winter crop area - Australia a |
||||||
|---|---|---|---|---|---|---|
New South Wales |
Victoria |
Queensland |
Western Australia |
South Australia |
Australia |
|
000 ha |
000 ha |
000 ha |
000 ha |
000 ha |
000 ha |
|
| 1997-98 | 4 543 |
2 315 |
1 213 |
7 141 |
3 047 |
18 260 |
| 1998-99 | 4 927 |
2 454 |
1 420 |
7 419 |
3 376 |
19 582 |
| 1999-00 | 4 955 |
2 670 |
1 337 |
7 464 |
3 342 |
19 763 |
| 2000-01 | 5 398 |
2 706 |
1 126 |
7 390 |
3 667 |
20 280 |
| 2001-02 | 5 309 |
2 684 |
788 |
7 173 |
3 866 |
19 817 |
| 2002-03 | 4 782 |
2 928 |
774 |
7 174 |
3 965 |
19 623 |
| 2003-04 | 6 070 |
3 126 |
1 039 |
7 689 |
4 034 |
21 982 |
| 2004-05 | 6 456 |
3 130 |
878 |
7 936 |
4 018 |
22 444 |
| 2005-06 | 5 554 |
2 908 |
967 |
7 390 |
3 882 |
20 728 |
| 2006-07 | 5 616 |
3 054 |
792 |
6 474 |
4 152 |
20 117 |
| 2007-08 | 6 315 |
3 397 |
879 |
7 262 |
4 142 |
21 954 |
| 2008-09 s | 5 946 |
3 191 |
1 203 |
7 406 |
3 985 |
21 757 |
| 2009-10 previous | 6 148 |
3 114 |
1 322 |
7 304 |
3 970 |
21 879 |
| 2009-10 f | 6 120 |
3 170 |
1 348 |
7 528 |
4 020 |
22 207 |
| % change 2008-09 to 2009-10 | 3 |
-1 |
12 |
2 |
1 |
2 |
| a State areas include wheat, barley, oats, canola, lupins, field peas, chickpeas, faba beans and lentils. Australian totals also include triticale, linseed and safflower. f ABARE forecast. s ABARE estimate. Note: Previous refers to the numbers published in the previous issue of the Australian crop report. |
||||||
Climate variability is an important factor contributing to changes in Australian crop production, with rainfall variation the main contributor to changes in crop yields from one year to another.
Crop forecasts by ABARE are based on a combination of variables, including discussions with people ‘on the ground’ and using in-house analysts’ professional judgment in assessing the significance of weekly and monthly rainfall data for the principal crop producing regions. A number of organisations provide model-based yield forecasts for grains, including wheat and sorghum, which incorporate climatic information and forecasts provided by the Bureau of Meteorology. For example, the shire scale wheat forecasting system of the Queensland Department of Primary Industries and Fisheries combines starting soil moisture conditions with the seasonal outlook, including the most recent trend in the Southern Oscillation Index (SOI). This information forms part of the base information used by ABARE.
Early in the growing season, ABARE generally uses a 10 year moving average yield as a starting point for crop forecasts in each state. The 10 year average yield takes account of productivity improvements, farmers’ adaptation to changing climatic conditions, and recent trends and variations in rainfall and temperature. ABARE also incorporates three month seasonal outlooks released by the Bureau of Meteorology in its crop production forecasting system. Yield forecasts are formulated by adjusting 10 year averages in accordance with rainfall to date and the climatic (rainfall and temperature) outlooks.
Total summer crop area is forecast to fall by around 5 per cent to slightly more than 1 million hectares in 2009-10 (table D). Below to very much below average winter rainfall in key growing regions of northern New South Wales and southern Queensland is forecast to result in a decline in the area planted to grain sorghum. Availability of irrigation water remains a critical issue for cotton and rice. Total summer crop production is forecast to fall by 16 per cent to around 2.9 million tonnes in 2009-10, reflecting a forecast decline in grain sorghum production.
Australian cotton plantings in 2009-10 are forecast to increase by 19 per cent in 2009-10, to 195 000 hectares. The increase reflects an improvement in irrigation water availability compared with last year and that irrigated cotton delivers a higher gross margin per megalitre of water used than alternative irrigated summer crops. Cotton lint and cottonseed production in 2009-10 are forecast at 375 000 tonnes and 531 000 tonnes, respectively.
With a continued lack of irrigation water for rice growing, the area planted to rice in 2009-10 is forecast to remain similar to the small area planted in 2008-09, at around 8000 hectares.
At this early stage of the season, the total area planted to grain sorghum is forecast at 662 000 hectares in 2009-10, which is an 8 per cent decline from the area sown last year, reflecting below to very much below average winter rainfall in key growing regions. However, additional plantings are possible in 2009-10 if higher than currently expected rainfall is received between now and the end of the planting window. Assuming average yields, grain sorghum production in 2009-10 is forecast to decline by 20 per cent to 1.9 million tonnes.
D Summer crop plantings and production - Australia a |
||||||||
|---|---|---|---|---|---|---|---|---|
New South Wales |
Queensland |
Australia |
||||||
' 000 ha |
Kt |
' 000 ha |
Kt |
' 000 ha |
Kt |
|||
| 1996-97 | 655 |
2 774 |
689 |
1 485 |
1 431 |
4 374 |
||
| 1997-98 | 617 |
2 588 |
640 |
1 139 |
1 335 |
3 823 |
||
| 1998-99 | 885 |
3 228 |
721 |
1 712 |
1 741 |
5 097 |
||
| 1999-00 | 742 |
2 882 |
771 |
2 031 |
1 591 |
5 025 |
||
| 2000-01 | 825 |
3 366 |
816 |
1 786 |
1 761 |
5 286 |
||
| 2001-02 | 777 |
3 146 |
794 |
1 772 |
1 633 |
4 933 |
||
| 2002-03 | 509 |
1 582 |
521 |
1 199 |
1 097 |
2 868 |
||
| 2003-04 | 436 |
1 766 |
708 |
1 806 |
1 211 |
3 679 |
||
| 2004-05 | 493 |
1 984 |
773 |
1 788 |
1 340 |
3 889 |
||
| 2005-06 | 760 |
2 765 |
615 |
1 512 |
1 442 |
4 387 |
||
| 2006-07 | 332 |
1 036 |
520 |
1 079 |
912 |
2 181 |
||
| 2007-08 | 378 |
1 650 |
756 |
2 826 |
1 205 |
4 584 |
||
| 2008-09 s | 371 |
1 380 |
672 |
1 998 |
1 118 |
3 487 |
||
| 2009-10 f | 369 |
1 235 |
620 |
1 618 |
1 060 |
2 944 |
||
| % change 2008-09 to 2009-10 | -1 |
-10 |
-8 |
-19 |
-5 |
-16 |
||
| a State production includes sorghum, rice, cottonseed, maize and sunflowers. Australian production also includes soybeans, peanuts, mung beans and navy beans. f ABARE forecast. s ABARE estimate. | ||||||||