Insect pest risk
|High risk||Moderate risk||Low risk|
||Seed dressings protect seedlings unless pest pressure is extreme.|
||Moisture stress makes budding crops more susceptible to damage.||Locally dry winter resulting in low RGB populations + little or no immigration from long distance sources.|
||Feeding damage to the back of heads predisposes the plant to secondary head rots in the event of wet weather.|
|Slugs and snails|
|Black field cricket||Damaging||Present||Damaging|
|Slugs and snails||Damaging||Damaging|
|Green vegetable bug||Present||Damaging||Damaging||Damaging|
|Present||Present in crop but generally not damaging|
|Damaging||Crop susceptible to damage and loss|
Key IPM considerations for sunflowers
- Sunflowers are susceptible to seedling damage because damaged sunflower seedlings lack the capacity to regrow or tiller.
- The use of synthetic pyrethroids to control RGB will kill beneficial insects that may otherwise suppress helicoverpa and looper populations. Regular monitoring is essential.
- Bees are important pollinators of sunflowers. Consider bees in management options and only spray late afternoon when bees are less active
- Snails may also cause grain contamination at harvest