Now let’s talk about garden pests during the ripening period of fruits and berries.
15-20 days after the end of flowering of autumn-winter varieties of apple trees, the codling moth appears, for some time they crawl along the leaves and fruits, and then take root in the fruits. They eat out 2-3 seeds and move to neighboring fruits. The feeding period lasts about a month. Damaged fruits fall off along with the caterpillars. On the very first night, the caterpillars crawl out of the fallen fruits and rush to the places of pupation or crawl up the tree again, if they have not yet finished feeding. That is why it is necessary to carry out a daily collection of carrion, to put on trapping belts. During the hatching period of caterpillars, spray with infusions of wormwood, tops of tomatoes. With a large number of pests, carry out two sprayings with one of the pesticides: fury, Inta-Vir. The first – at the beginning of caterpillar hatching, the second – 12 days after the first treatment.
After the petals have completely fallen off, other pests of the garden appear during the period of ripening of fruits and berries – apple sawfly larvae, which gnaw a passage under the skin of the fruit – a mine. The mine is clearly visible in the form of a dark strip. Superficial injury by a first instar larva does not result in fruit drop, but causes stunted growth or malformed or lopsided fruit. After the first molt, the larvae leave the mine and move to another fruit, where they eat away the seeds and the central part of the fruit. A rusty-red liquid flows from the exit hole made by the larva. The disturbed larva has an unpleasant smell of bugs. One larva damages several fruits during its life. Damaged fruits fall off, only larvae infected with parasites can be found in fallen fruits. Therefore, you need to shake off damaged fruits.
Cherry slimy sawfly
In the second half of summer, the leaves of cherries, pears, plums and hawthorn can damage fat-like commas covered with black mucus up to 1 cmlarvae of the cherry slimy sawfly. They, holding tightly to the leaves, scrape off the pulp from the upper side of the leaves and the lower skin. Severely damaged trees appear burned. The period of harmful activity coincides with the laying of fruit buds on the cherry, and the destruction of foliage during this period is reflected in the harvest of the next year.
Control measures: spraying against larvae with infusion of tobacco, wormwood, soda ash solution (70 g on the 10 lwater). The cherry slimy sawfly can also be killed with Kinmiks insecticide.
Currants and gooseberries are damaged by a relatively large number of sawfly species, which in some years cause significant damage, exposing bushes and causing a strong reduction in yield. The most harmful in our area is the yellow gooseberry sawfly, which develops in our country in 2 generations. The harmful activity of the first generation caterpillar falls on the period of intensive development of berries and ends during the formation of large green gooseberry berries. False caterpillars, green, with numerous small black spots, eat leaves, leaving thick veins, and can quickly expose a medium-sized bush, which negatively affects the quality of the berries: the berries become smaller, often wither and fall off.
At the end of June, the second generation appears, the most numerous, which continues to feed on young leaves that have appeared on overgrown bushes, this entails an even more weakening of the bush. Damaged young shoots do not have time to lignify and are easily subjected to freezing. On weakened plants, few flower buds are laid for the next year’s harvest.
Control measures: shaking off the caterpillars on the litter or manually collecting them from the leaves. Spraying against larvae with infusions of ash, wormwood, tobacco, garlic and, in extreme cases, with a high number, treat with Kinmiks insecticide.
Currant glass jar
Often, dried shoots can be found on currant and gooseberry bushes in the middle of summer. Inside these shoots, a currant glass box is operating. White caterpillar 2-2.5 cm, lives inside the shoots for 2 years. It gnaws inside their smooth passages with black walls – wormholes.
Control measures: it is necessary to periodically inspect the plants until the first half of summer, cut the branches damaged by the currant glass case to a healthy part and burn them.
Shield and powdery mildew
Also on the branches of currants and gooseberries you can find a white flaky coating. These are the larvae-vagrants of the willow scale insect that hatched in May-June, having stuck to the bark, are covered with a grayish-white shield and in the process of further development lead a motionless lifestyle. Sucking the juice from the bark, scale insects greatly weaken the plants and cause oppression and death of the branches. Summer sprays against leaf sawflies are also effective against stray scale insect larvae.
To increase the resistance of currant and gooseberry plants to powdery mildew in the second half of summer, apply increased doses of phosphorus-potassium fertilizers in the form of top dressing. Carry out summer spraying 3-4 times with an interval of 8-10 days with a solution of linen soda ash (50 ggray hair +50 gsoap) or infusion of mullein or straw. The first processing in 7-10 days after flowering.
At this time, strawberry mites cause the greatest harm to strawberries. The number of ticks increases sharply in June and reaches a maximum in August. As a result of sucking out the juice, the leaves shrivel, acquire a yellowish-oily hue and usually die off. Bushes become dwarf, do not overwinter well. Strawberry mites spread throughout the plantation, moving from plant to plant along leaves and tendrils, with seedlings the mites spread over long distances. In case of severe mite infestation, immediately after harvesting, the leaves should be mowed, removed from the site and treated with colloidal sulfur. Mowed areas need to be watered, fed, loosened.
In July, young beetles of the raspberry-strawberry weevil, the strawberry leaf beetle, the second generation of the strawberry sawfly appear. With a large population of these pests, carry out processing after harvesting with rovikurt.
Sea buckthorn fly
In recent years, the sea buckthorn fly has been rampant on sea buckthorn. From this pest, the crop dies by 100%. The fly appears in the third decade of June – early July and lasts until mid-August. In early July, female sea buckthorn flies lay their eggs under the skin of not yet ripe fruits. After 8 days, white, legless larvae appear up to7 mm, which feed on the pulp of fruits for more than a month. One larva damages up to 5 fruits. In the 1-2 decade of August, the larvae gnaw through the skin and fall to the ground, go into the soil for 5-10 cm, form a false cocoon and hibernate in it.
During the mass summer of flies, sea buckthorn should be sprayed with 10% d.p. (75-90 g on the 10 lwater). Systematically loosen the soil in the near-stem circles in order to destroy the stock of larvae and false cocoons.