Disease in chickpeas a serious concern and can have dramatic yield implications if not monitored and appropriate control measures are taken when risk is high. To determine the risk associated with Ascochyta blight in chickpeas, a disease decision support checklist has been developed as a working tool for producers.
Fungicide Decision Support Checklist for Chickpeas
Select an option in each section above to calculate your risk score.
Source: Scouting and Management of Ascochyta Blight in Chickpea, Saskatchewan Ministry of Agriculture
Disease Risk Categories
Total Risk Value < 15:
Your risk is low and Ascochyta blight should not have a negative impact on your crop if you remain diligent about scouting and applying fungicides when necessary. Consider the following recommendations:
- Apply fungicide if the crop is at the seedling stage and a fungicide has not yet been applied.
- Delay fungicide application if there has been no new lesion development and there is no rain in the forecast.
Total Risk Value is 20 to 45:
Your risk is low to moderate. Continue to scout for new lesion development as your crop matures. Consider the following recommendations:
- Apply fungicide if it has been close to 14 days since the last application.
- Delay fungicide if less than 14 days since last application and there is no rain in the forecast.
Total Risk Value is 50 to 75:
Your risk is moderate and disease is either increasing in your crop due to favourable weather conditions, or because Ascochyta blight was established before a fungicide was applied. Some yield loss due to disease will occur. Consider the following recommendations:
- Apply fungicide if it has been close to 14 days since the last application.
Total Risk Value > 80:
Your risk is high and Ascochyta blight will impact your yield and seed quality. Consider the following recommendations:
- Apply fungicide if crop is in the flowering to early pod stages and there is a potential for suitable yield.
- Do not apply fungicide if disease is severe and there is little chance for economic return.
Source: Scouting and Management of Ascochyta Blight in Chickpea, Saskatchewan Ministry of Agriculture
