Orchard factor | Assessment procedure | Risk criteria |
---|---|---|
1. Bare ground |
Inspect orchard in July Estimate bare ground under trees, taking into account mulch and weed cover |
100% bareground = overall herbicide = high risk overall grass or mulch = 0% bareground = no risk 20% or more bare ground in herbicide strip = moderate/high risk |
2. % crop <½ metre (knee height) from soil splash |
Select 20 trees at random and assess % crop <½ metre from soil Make assessment in July to identify at-risk orchards. Reassess near harvest |
15% or >= risk |
3. Rainfall | Monitor rainfall in 15 days up to harvest | 20 mm or > = risk |