Bulletin
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Authors: fan | Edit: lirui
During this monitoring period, Australia was in a seasonal transition phase for wheat production, positioned between the end of the previous harvest and the next sowing window. National remote‑sensing signals primarily reflected land preparation and pre-sowing activities. CropWatch agrometeorological indicators show that national cumulative rainfall totaled 90 mm, 12% below the 15-year average; mean temperature was 24.0°C, close to normal; and photosynthetically active radiation reached 960 MJ/m², 3% below average. As a result, national potential accumulated biomass was 535 g DM/m², representing a 7% decline from the long‑term norm, indicating a moderate suppression of overall growth potential during the quarter. CropWatch monitoring shows that the national cropland planting fraction (CALF) was 23%, consistent with the seasonal characteristics of a fallow period; the Maximum VCI (VCIx) was 0.77, at a moderate level. Despite generally unfavorable moisture conditions and reduced potential biomass, the Crop Production Index reached 1.11, suggesting that, buffered by regional contrasts and management measures, the overall production outlook was better than the recent norm.
Regionally, moisture conditions were relatively favorable in the Southeastern wheat area (RAIN +14%), supporting the build-up of pre-sowing soil moisture. In the Wet temperate and subtropical zone, rainfall was abundant, potential accumulated biomass was the highest, and cropland cover remained stable; however, excessive wetness may constrain field operations and increase disease pressure. In contrast, the main risks were concentrated in the Subhumid subtropical zone and the southwestern wheat area: the former experienced combined deficits in moisture and heat stress, accompanied by low CALF and VCIx values; the latter recorded the most severe precipitation shortfall (−45%), highlighting a pronounced risk of insufficient soil moisture before sowing. Overall, agricultural conditions in Australia from January to March 2026 can be characterized as a "pre‑sowing transition period for wheat, with moderately constrained moisture conditions but clear signs of late‑period recovery." Subsequent developments will depend on whether rainfall can sufficiently replenish soil moisture to ensure timely sowing.
