realenglishfruit

Top fruit tree growing advice and information from Real English Fruit

Peach leaf curl disease

Peach leaf curl

If you grow peaches, nectarines and apricots, this is the main problem. It can be avoided bycovering your peach tree or your apricot tree with a double layer of garden fleece from late January until the middle of May, every year.
Peach leaf curl disease is caused by a fungus, Taphrina deformans. It will attack the tree species of peach, nectarine and apricot. The symptoms are the development of large reddish blisters on the leaves. The tree is seriously weakened as photosynthesis bythe leaves is seriously affected. Eventually the tree is starved to death as it is no longer able to make essential carbohydrates, through photosynthesis. Leaves tend to fall prematurely and growth comes to a complete standstill.
The fungus attacks the tree from late January until the middle of May. After May the fungus is no longer producing spores and therefore cannot cause new infections.

How to avoid these troubles

Actions to be taken immediately are the complete removal of leaves affected. This applies to the fallen leaves as well as the affected leaves still attached to the tree. Make sure the leaves are all collected up, put in a plastic bag and then put in the non-recycling bin. The fungal spores survive over winter on the fallen leaves!
Make sure the tree is well watered and does not stand in a carpet of weeds and grass. Apply a full watering can of water twice a week, particularly during the summer months. Mulch the tree with well rotted farmyard manure. The area to be mulched must be of a minimum size of one square yard.

Never let the tree go short of water! By late January cover the tree with a double layer of garden fleece. Fasten the fleece securely. Make sure the wind cannot affect it or lift it off. Keep your eye on the tree and if a tear develops in the fleece after particularly bad weather, repair the damage properly. This fleece needs to stay in position until the second week of May. After that time, carefully remove the fleece.

Never prune the tree during the autumn and winter months when the leaves have fallen. It is at that time that new infections occur very quickly. Prune during the middle of May or during late August, making sure that the old wood is removed to make room for new shoots to form. This is essential as the fruits of peach and nectarine are formed on one year wood only. Seal the pruning cuts with “Prune and Seal”, a compound available from your garden centre. The foliage of a well pruned tree dries up quickly, with less chance of new infections.

One response to “Peach leaf curl disease

  1. Woolly Green June 22, 2012 at 11:57 am

    we used to have several apricot trees and completely agree that winter covering with fleece made all the difference! thanks for this interesting post 🙂

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