CROPPING

WA crop estimate drops by 700,000 tonnes

RECENT frosts and a dry spring have resulted in Western Australia’s crop estimate to fall below the 20 million tonne mark.

Staff writer
 Crop production in WA is estimated to have fallen 700,000 tonnes in the past month but is still on track for a record year.

Crop production in WA is estimated to have fallen 700,000 tonnes in the past month but is still on track for a record year.

The September Grain Industry Association of Western Australia (GIWA) Crop Report has the state's crop production at 19,307,000 tonnes, down 720,000 tonnes from the August figure.

GIWA said in its September report that the recent severe frost events in the central grainbelt have shifted attention away from the lack of spring rain, but the lack of useful spring rain north of the Great Eastern Highway and the lower rainfall regions is now likely to have more impact on reducing final tonnage in the state than the recent frost events.

GIWA expects the very cold temperatures experienced in early September will reduce deliveries by growers in the worst hit areas by at least 50 per cent on what was expected prior to the frost events.

There were also several frost events in late August over a much wider area of the state that have taken the top off crops that were at vulnerable growth stages.

More recently there were some cold mornings that will impact grain yields for crops that were flowering in regions away from the worst hit locations. The worst hit areas are obvious now, although the full extent of the impact from these frosts will not be evident for a few more weeks yet.

GIWA also noted that in the lower rainfall regions, the soil profile has dried out to a point where the capacity for crops to recover from the frost will be limited.

At the same time as frost was reducing grain yield potential, the continuing dry conditions have started to bite and crops in the northern grain growing regions, that were not impacted as much by the frost, have lost a lot of potential in the last few weeks.

The worst case scenario has developed in the northern grain growing regions. Here, the very high potential with a lot of top growth on the crops has contributed to sucking the profile dry and without any useful spring rain to date and warm temperatures, it is shaping up to be just an "okay" year rather than one of the best for a very long time.

On a more positive note, GIWA said the Esperance Port zone has largely escaped the worst of the frost to date and the lack of hot winds have let crops continue to fill.

Overall, the region is still looking at a very good year. The same can be said for the Lakes District where the grain yield potential is above to well above average. The south and west Albany Port zones are recovering from the waterlogging and with a mild finish, will end up with more grain than thought possible a month ago.

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