2024 Author: Gavin MacAdam | [email protected]. Last modified: 2023-12-16 13:38
Gooseberry rust affects gooseberries and currants the most. Initially, it develops on sedge, on which the pathogen fungus overwinters, and from which spores are subsequently transferred by the wind to gooseberries and currants. With a sufficiently strong lesion with this ailment, half (or even more) of the berries often fall off, and the shrubs themselves lose from 40 to 78 percent of the leaves
A few words about the disease
When this ailment occurs, yellow pads of rather large sizes are formed on the leaves, ovaries and flowers of gooseberries and currants. In these pads, the development of spores of the fungus-causative agent of the disease occurs. A little later, the pads take the form of tiny goblets, which is why the name of the disease. The causative agent of this misfortune is a diverse basidiomycete mushroom.
As a rule, lesions of berry bushes are found in the spring. Damaged leaves look rather ugly and begin to fall off prematurely, and the berries on the bushes are underdeveloped and one-sided. Drying quickly, these berries fall off with ease.
How to fight
First of all, it is recommended to grow gooseberry and currant varieties that are resistant to this ailment. The currant variety called "Dove" has proven itself especially well. When choosing sites for planting these berry crops, low and wetlands should be avoided whenever possible. It is best to prefer areas free from intermediate hosts (in particular, from sedges). The soil around the bushes is carefully loosened, the waterlogged areas are drained, and all fallen leaves are raked up with their subsequent burning. Alternatively, fallen leaves can be embedded in the soil.
In order to avoid contamination of berry crops with goblet rust, sedge thickets located near the sites must be mowed (approximately at a distance of two hundred meters). And the areas where sedge grew are drained.
You can increase the resistance of gooseberries and currants to goblet rust by feeding them with fertilizers in early spring or in autumn.
A one-percent solution of Bordeaux liquid and a number of other fungicides helps to cope well with goblet rust. During the blooming period, the first spraying should be carried out; the second, most important treatment coincides with the budding period; and immediately after flowering, the third spraying is carried out. If the gooseberry and currant bushes are very strongly affected by the disease, it is permissible to carry out the fourth treatment ten days after the third. And instead of the first two sprays before flowering, it is not forbidden to carry out one so-called "blue" - for this, a three percent solution of Bordeaux liquid is used at the stage of bud swelling.
Bordeaux liquid can be replaced with copper sulfate or drugs such as Captan, Tsiram and others. The bio-preparation "Fitosporin", as well as preparations "Hom", "Ordan", "Baylon", "Topaz", "Oksikhom" and "Abiga-Peak" are quite suitable for spraying.
You can fight goblet rust without the use of chemicals. For this, 200 g of tobacco dust is poured with two to three liters of hot water and insisted for two to three days. At the same time, an infusion is prepared from one glass of garlic cloves, which is also filled with two liters of hot water. Next, both pre-strained infusions are poured into a pre-prepared ten-liter bucket and a teaspoon of ground red (hot) or black pepper, as well as a tablespoon of liquid soap, are added to the composition. The solution is insisted again for an hour or two, filtered again and sprayed with vegetation (until the buds open). And the cake remaining after straining is scattered around the berry bushes and slightly dripped. A couple of weeks later, when the leaves bloom, the bushes are additionally sprayed with onion peel infusion - it will relieve stress from the plants and give them strength.
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