If the autumn is still far away, and the leaves of the currant and gooseberry suddenly and unevenly yellow in June-July, there is some kind of problem with the shrub. And if at the same time the leaves are still curled and dry - it is time to quickly search for the causes and eliminate them.
And the reasons for the unexpected yellowing of these foliage, in general, unpretentious berry bushes can be several - fortunately, many of them are removable. We will not address such obvious causes of yellowing of the leaves, such as prolonged rainy weather, insufficient lighting of the bushes or sharp temperature jumps outside. Let's look at the most likely answers to the question “why the leaves turn black currant and gooseberry” and together decide what to do in each case.
Gooseberry leaves and currants turn yellow due to improper watering
If yellow leaves appeared on currants and gooseberries in late spring or early summer, maybe the fact is that the plants lack water? This is especially likely in dry arid weather or in the early stages after the planting of young seedlings. Do you water your plantings right?
Gooseberries and currants need to be regular watering, especially in the first months after planting, especially if the weather is hot.
If the temperature indicators of spring and summer are normal, three shrubs per season will be enough for these bushes:
- In late May - early June, during active growth of green mass and the appearance of ovaries.
- At the end of June, when the berries ripen on the bush (without watering, you get a low crop, the berries will be small and dry, with thick skin).
- After harvesting (lack of moisture in the soil at this time has a negative effect on the budding of flower buds, that is, next year you can go without a crop).
If the thermometer that the week keeps steadily above 25 ° C, and you have not seen rain for a long time, additional moisture will not prevent your plants at least once a week (especially if the soil is sandy).
Gooseberries more successfully withstand drought than currants, and black currants tolerate a lack of moisture in the soil much worse than red.
Water the shrubs correctly - water heated by the sun at the root, to a depth of at least 30-40 cm. Two buckets of water are enough for one shrub, but with tracking so that the water does not spread outside the tree circle (you can dig a shallow groove in a circle) .
- How to water the trees and bushes in the gardenHow much water does a fruit garden need for good growth and development?
Gooseberry leaves and currants turn yellow due to lack of nutrients
Lack of nitrogen in the soil is another common reason that the leaves of the currant and gooseberry turned yellow, seemingly for no apparent reason. Normally, this macro element promotes the growth of the vegetative mass, and is also a component of chlorophyll, without which such an important process as photosynthesis is impossible. That is why the leaves suffer from a shortage or excess of nitrogen.
With a lack of nitrogen in the gooseberry and currant oxygen starvation occurs, due to which the plant begins to slow down its growth, the leaves grow dull and yellow, not reaching the desired size, the lower leaves curl and fall off. Nitrogen deficiency often occurs in soils with high acidity and abundant weeds.
What to do with a lack of nitrogen? Of course, apply the appropriate fertilizer:
- Ammonium nitrate, where 35% of nitrogen is contained in ammonium and nitrate forms.
- Urea and carbamide are amide fertilizers containing 46% nitrogen.
- Ammonium sulfate, or ammonium sulphate, where not less than 20% of nitrogen.
Nitrogen fertilizers are applied in spring and summer, necessarily sealing them deep into the soil; in the autumn of their use is impractical.
- Nitrogen, phosphorus, potassium - signs of deficiency and excess in plantsWhat is the result of an excess or deficiency of nitrogen, phosphorus and potassium? Learn from our infographics!
Gooseberry leaves and currants turn yellow due to disease
Unfortunately, if the above reasons for the yellowing of the leaves of berry bushes are easily eliminated, then the fight against possible diseases leading to drying, twisting and yellowing of the shoots and leaves of currants and gooseberries will have much longer and more thoroughly.
So, what diseases can cause the leaves to turn yellow and fall off?
Currant and Gooseberry Rust. Several types of this fungal disease can manifest themselves differently - either small reddish spots on the leaves of the gooseberry and currant leaves, or yellow-orange "warts" on the underside of the leaf. After some time, the berries and foliage of the diseased bush dries out and fall prematurely.
Verticillosis (Verticillous wilting) currants and gooseberries affect the root and vascular system of berry bushes, as a result of which they receive less nutrients, start to grow poorly, and the leaves turn yellow, dry and fall off, starting from the lower tier. If not to take measures, within 2-3 years the bush can die.
Anthracnose currants and gooseberries. This fungal disease is characterized by the appearance of circular brown spots on the leaves on both sides, which gradually merge, as a result of which the leaves turn yellow and fall prematurely abundantly. Due to the general weakening of the bush, its winter hardiness and productivity may significantly decrease.
Mosaic currants and gooseberries. This disease is caused by a virus and appears on the leaves in the form of rounded, diffuse pale yellow spots with a light green center, located along the veins. Over time, the spots merge, the sheet turns completely yellow, the affected tissue between the veins becomes white and dries.
To some extent or other, yellowing and drying of leaf blades can cause other diseases - for example, sphere library, or American powdery mildew.
- Diseases of currants and gooseberries - descriptions with photographs and methods of treatmentThis article will help you identify the disease of red and black currants, as well as gooseberry.
Unfortunately, it is impossible to completely cure currants and gooseberries from the aforementioned ailments, and preventive measures, which include:
- thorough autumn harvesting of the plot from plant residues and litter;
- selection of varieties that are initially resistant to these diseases;
- prophylactic treatment of the bushes with a 1% solution of Bordeaux liquid (or other copper-containing preparations) at the stages of leaf blooming, bud formation and after flowering;
- timely removal of fading and yellowed leaves;
- the use of fungicides according to the instructions;
- digging up and burning heavily damaged plants.
Gooseberry leaves and currants turn yellow due to pests
Not only gardeners, but also numerous garden pests want to be treated with currants and gooseberries. And if you are waiting for the berries, then insects as food will suit other parts of plants, including the leaves. Check the berries - are there any other signs of damage by parasites?
For example, sucking the nutrients out of the leaves, as a result of which they will turn yellow and dry, spider mite. The bright-orange females that came out from the wintering grounds are clearly visible on the underside of young leaves. Later, you can easily recognize the damaged plant by spider nests, twisting the tops of young shoots - during the summer the pest gives several generations. Plants are more affected by pests in dry weather. As a result, not only the leaves are damaged, the yield is also noticeably reduced, when the unripe berries fall off.
Also a lot of trouble currants and gooseberries can deliver aphid. Both adult insects and their larvae actively suck out literally all the juices from plants, and during the season aphid gives several generations of offspring. Moreover, individually this small pest does not "work." If you notice one - look around a whole colony nearby. The appearance of aphids is accompanied by the appearance of blistering on the upper side of the leaves, their reddening, yellowing, twisting and further dropping.
Currant glass maker, despite its “narrow profile” name, it will ruin your gooseberry bushes too. Insect is dangerous at the stage of caterpillars, which literally bite into the stalks, disrupting the feeding of leaves. As a result, damaged shoots and leaves fade, turn yellow and die.
Pest control measures are mechanical, biological and chemical. They include:
- mandatory collection and destruction of fallen leaves;
- loosening the soil under bushes, sheltering it with a thick layer of mulch;
- the cutting and burning of all insect infested and weakened shoots and leaves;
- processing plants infusion of onion, garlic, mustard, tobacco;
- timely sprinkling of currants and gooseberries with insecticides.
- Pests currants and gooseberries - photo, description, than to treat the bushesLearn how to protect your favorite berries from dangerous insects.
As you can see, for a gooseberry with a currant, as well as for other plants, correct and timely care is the main thing. Follow the rules of planting, watering and feeding garden crops, do not forget about disease prevention - and the berries will surely please you with bright healthy foliage and good harvest.