Currant aphid: how to fight, than to process
Aphid is not only a harmful parasite that draws all juices from currants, but also a carrier of dangerous infections. A fungus is far from the worst that a pest can bring. Incurable viruses can destroy an entire landing, ruin a crop and ruin the soil for a couple of years. Therefore, it is so important to deal with aphids in a timely manner, and we are ready to tell you how!
Currant aphid: what is dangerous?
Aphids feed on plant sap, which leaves leaves and young shoots turn yellow and weaken. Currants lose their immunity, and it becomes more sensitive to any disease. At the same time, aphids breed at a crazy speed - from a few to several thousand in a couple of weeks.
Because of aphids, flowers are poorly formed, bloom worse, and they become smaller. This naturally affects the fruiting of currants, and in the distant future - its readiness for winter. Clutches of aphids winter safely on the plant and are activated with the arrival of heat - by May-June.
In addition to the fact that aphids carry infections, its waste products attract other pests. They are especially loved by ants who have long lived with aphids in mutually beneficial symbiosis.
How to detect aphids?
The aphid is very small, so to notice it, you really need to take a closer look. There are different species, and they can be of different shades - but this is always an accumulation of small parasites. First of all, they gather on the back of currant leaves, because of which they often twist down.
When the aphids become too much, we can see strange whitish fragments on the bushes. Aphid changes its cover and thus discards the old. The sticky sweet pad that the parasites secrete is also collected on leaves and buds. At later stages, the leaves dry, the buds do not open, and the fruits do not form.
There are no traps for aphids, because it is a very small and ubiquitous parasite. But this does not mean that you can’t do anything - there are quite effective folk methods!
- The largest colonies are removed mechanically - manually with gloves or by the pressure of water from a hose. The main thing is not to damage the currants and not accidentally wash off the aphids on adjacent bushes;
- For washing the leaves, liquid soap or even a dishwashing detergent is excellent - a spoon per liter;
- To make any homemade solution more effective, add a spoonful of neem oil. This is a natural pesticide that effectively helps against aphids, ticks, thrips;
- Dilute 100 g of grated tar soap in a bucket of water and use immediately for spraying. Using the same principle, you can use laundry soap, but it needs more - 300 g. You can add a spoonful of soda ash;
- Pass 5 cloves of garlic through a press and mix in porridge with 2 tablespoons of vegetable oil. Leave the pulp for a day under the lid, add half a liter of water and a spoonful of liquid soap so that the oil dissolves better. Before spraying, dilute several tablespoons of the infusion with water;
- Prepare the infusion from a liter of water and 50 g of chopped onion, along with the husk. Add some laundry soap, strain and bring the volume to the necessary. By the same principle, you can use other hot foods - hot peppers, horseradish;
- Boil 250 g of ash in a bucket of water for about half an hour, let it brew and add a drop of soap for consistency. Use a solution for washing currants from aphids;
- Grind 2 cups of tomato leaves, pour them with 2 cups of water and let it brew for a day. Filter the mixture, dilute to a comfortable consistency, pour into a bottle and use to spray the leaves;
- Leave 200 g of dried tobacco leaves to infuse in a liter of water for two days. This is enough for 10 l of solution for washing bushes;
- Prepare an herbal infusion of chopped leaves and roots of chamomile, dandelions, marigolds or sorrel. You can use pine needles or potato tops. 200-400 g of grass is needed per liter of water - and insist 3-4 days;
- Pour 100 g of dry citrus peel with a liter of water for a day, boil, strain and dilute with a bucket of water.
Specialized chemicals on the one hand give the best result, and on the other, they tend to accumulate in plant tissues. Therefore, we recommend using insecticides only as a last resort, if simpler methods did not help.
By the way, industrial preparations can also be organic - based on pyrethrins, vegetable oils or fatty acids. More radical measures are often unnecessary because the aphid shell is very soft. It is quite effectively destroyed even by ordinary soap.
Other currant aphid control methods
A good way to reduce the risks of aphids in the garden is to attract its natural enemies. It is readily eaten by small birds - tits, kings, hemp. And also wasps, ladybugs and lacewings, the larvae of which are even sold on purpose.
Siderats and fragrant herbs, and in some cases nettles, also attract beneficial insects. And the aphid is scared away by a Dalmatian chamomile, garlic and onions, which can be planted in the aisles. At the same time, avoid the proximity of currants with linden, viburnum, mallow, cosmea and nasturtium.
First of all, aphids appear on young shoots, because they are not able to gnaw bark. Therefore, especially carefully process young branches and leaves.
- From time to time, you can wash the plantings with water with essential oils of thyme, tea tree or lavender;
- Regularly carry out preventive spraying of currants according to the calendar. But do not abuse, because even organic herbal solutions in high concentrations are harmful to young shoots;
- Perform the first treatment before the buds open, and at the same time begin preventative measures from ants;
- During budding, do not use chemical and aggressive drugs that can scare away bees;
- In the autumn, be sure to remove all plant debris and whitewash the shrub with lime mortar with copper sulfate.