treatment for curly leaf in fruit trees?
- RangerLv 78 years agoFavorite Answer
As in Peach Leaf Curl that also attacks Almonds, Nectarines and Apricots?
It is caused by a fungus. You need to purchase a sulfer spray made just for this problem. There are two types on the market. One type is a 2 part spray that you must mix. It is very difficult to use and clogs the sprayer several times before you can get an adequate amount on the tree. With this spray you only need to spray twice a year. In the spring right after blossom drop and when the leaf buds start to swell and again in the fall after the leaves had dropped.
The second and better type is a Soap and Water based spray. It is easiest to use and does not clog the sprayer, but it washes off easily. You will need to reapply it every two weeks because the dew will wash it off.
- olofsonLv 45 years ago
To avert peach leaf curl, deal with peach and nectarine timber every yr after leaves have fallen (late November). Copper-headquartered fungicides including Bordeaux blend (a slurry made of hydrated lime and copper sulfate, tribasic copper sulfate, calcium polysulfides, metal copper, or artificial fungicides can be used. Nonetheless, to be robust, copper-containing compounds have got to have at the least 50% copper; these containing much less do not thoroughly manage leaf curl regardless of advertising claims. If timed adequately, a single fall/winter spray will in most cases avert losses. In areas of excessive spring rainfall or when spring rainfall is abundant, it can be a good idea to use a 2nd copper spray or a lime sulfur healing in spring, ideally before buds begin to swell, but certainly earlier than budbreak (when green colour is first visible). Although signs of leaf curl are visible especially in spring as new leaves improve, there may be little you can do to manipulate the disease at this time. Some people eliminate diseased leaves or prune contaminated shoots, but this has now not been shown to reinforce control. (Pruning in fall, however, can diminish the spore inoculum overwintering on the tree.) generally, diseased leaves fall off within a couple of weeks and are replaced by new healthy leaves, until it is wet. If leaf curl symptoms befell for your bushes in spring, be definite to treat the next fall, around late November, to prevent extra critical losses the subsequent 12 months.