This month’s technical newsletter concerns Anthracnose disease which has been widespread during recent years.
Below is a video of a golf green taken on the 25/07/18. The previous day there was no sign of Anthracnose and the symptoms appeared overnight. As is the way nowadays agronomy work often begins with a WhatsApp video.
What can be done about the outbreak of Anthracnose?
Preventing Anthracnose occurring in the first place is essential. When the symptoms can be seen the plant is already dead.
- A fungicide spray will only help in that it can stop the spread of the disease to adjacent healthy plants.
- As the disease only occasionally affects Bent, minimizing the quantity of annual meadow grass in the sward
is the best approach. This of course is not always possible practically, so keeping the stress away from annual
meadow grass will help. The green in the video contains approximately 45% Bent, 10% Fescue and around
40% annual meadow grass, yet the disease has had a profound affect on the sward.
- In dry conditions a full wetting agent programme is essential to prevent drought stress. In extreme
conditions as experienced this year additional applications over and above the recommended monthly
programme may be necessary. Use a moisture meter to monitor soil moisture and irrigate regularly to keep
soil moisture above 15%.
- Adequate Fertiliser input. The green in the video had received 20Kg per Ha of nitrogen so far this year, all of
which was applied as liquid and no granular. Normally, around 40 Kg of N would have been applied in an
- Hitas Products offer a disease diagnostic and agronomy service- if you have customers with Anthracnose
problems on their greens get in touch and we can write specific programmes for them to minimize the
severity of the disease.