Content
- Why does the pear tree get yellow leaves?
- Characteristics of pest infestation
- Pear grid - a widespread disease of the pear tree
- What to do when the pear tree is affected?
- Prevention of pear grid
- Tips & Tricks
Why does the pear tree get yellow leaves?
Mind you, here is no mention of the autumn color of the leaves of the pear tree. This refers to the discoloration of the leaves in spring and summer by yellow, often bright orange spots. The disease is triggered by pear grid.
Characteristics of pest infestation
Pear grid - a widespread disease of the pear tree
Pear grate has spread throughout the country in recent years.
The trigger is a rust fungus that hibernates in juniper bushes and spreads its spores several hundred feet across the air. Only pear trees are endangered by the fungal attack.
The increase of the rust fungus explain experts with the increased planting of juniper bushes in gardens, parks and cemeteries.
What to do when the pear tree is affected?
The good news is that healthy, large pear trees handle the fungal attack quite well. However, it comes to lower harvests, because the tree can absorb less nutrients on the affected leaves.
The bad news is that so far nothing effective can be done against the pear grid on the pear tree.
Pick all affected leaves and discard them in the dustbin or burn them. Under no circumstances should these leaves be composted.
Prevention of pear grid
Two factors must coincide with the occurrence of pear grid, namely a juniper bush as a host plant and a pear tree less than half a kilometer apart.
The only effective control of the rust fungus is in the prevention, by removing all juniper bushes in the vicinity. As a result, the circulation circulation of the spores is interrupted.
In addition, the leaves of the pear tree must be carefully collected and disposed of in the fall. In the growths on the underside of the leaves are new spore nests that overwinter in juniper bushes and provide new fungus infestation next year.
Tips & Tricks
If your pear tree is attacked by the pear grid, it may help to strengthen it. Make sure you have a good fertilizer. Rake ripe compost or well-rotted manure into the ground. Healthy trees develop better resistance to fungal attack.