2024 Author: Gavin MacAdam | [email protected]. Last modified: 2023-12-16 13:38
The multi-colored fruit roll is almost ubiquitous and loves to feast on quince, pears and apple trees, as well as cherry plum with plums, sweet cherries with cherries and delicate apricots. In addition, from time to time it attacks almonds, rose hips, thorns, hawthorn, hazel, elm and maple. Caterpillars are considered to be especially harmful - they damage not only the blossoming buds, but also flowers and buds with leaves, braiding them with a delicate cobweb and gradually pulling them into bizarre glomeruli
Meet the pest
Fruiting multi-colored leaf rollers are butterflies with wingspan ranging from 14 to 20 mm. The main halves of their wings are characterized by a yellowish-white color, and their outer parts are painted brown-violet or black-brown and intersect with narrow stripes of a yellowish-grayish hue. And the hind wings of gluttonous pests are painted in grayish-brownish tones.
Eggs of fruit-bearing multi-colored leaf rollers reach the size of 0, 63 - 0, 86 mm and are distinguished by an oval shape. At the same time, the eggs of the summer generation are colored in light yellow shades, and the wintering eggs are orange or milky white. Caterpillars growing up to 16 - 18 mm in length are characterized by a yellowish-greenish color and are endowed with brown heads. The front legs and prothoracic scutes are brownish, and on the abdominal legs, two-tier crowns consisting of 35 - 37 claws can be seen. Dark brown pupae, 8 to 9 mm in size, are equipped with tergal spines of impressive size and short cremasters, which look like gradually thinning lobes bent to the ventral sides.
Eggs can overwinter either singly or in small groups. Each group includes three to six eggs. They hibernate only near fruit buds. The revival of caterpillars, immediately starting to feed, falls on the stage of budding.
After about twenty-twenty-five days, the harmful parasites pupate right in the places of their feeding. Each pupa develops on average about two weeks. And the duration of the summer of butterflies is about one and a half months, covering the period from mid-June to the end of July. For twenty to thirty days of her life, each female manages to lay up to two hundred and fifty eggs. And after another eight or eleven days, caterpillars of the second generation begin to revive. They live and feed between two leaves tied by a cobweb, among leaves rolled into balls or under the cover of foliage on fruits. Pests that have finished eating pupate in the same place where their development took place. As a rule, this occurs in the period from the second decade of August to the end of September. And after twenty-twenty-five days, harmful butterflies fly out, laying wintering eggs. For each year, two generations of parasites have time to develop.
How to fight
So that sick and old branches of fruit trees do not have time to turn into a real breeding ground for pests, they must be cut off in time.
Also, in the fight against fruit multi-colored leaf rollers, various biological products have proven themselves very well. However, the trees are also sprayed with insecticides. As a rule, pome breeds are treated with insecticides before the start of flowering in the spring (at the “rose bud” stage), and stone fruits are treated immediately after flowering. Such a measure helps to get rid of the first generation caterpillars. Treatments against caterpillars of the second generation are carried out in the summer (usually in mid-July), and pheromone traps can be used to track the number of pests.
The most effective insecticides in the fight against fruit multicolored leaf rollers are "Desant", "Fufanon", "Tagor", "Di-68", "Ditoks" and "Rogor-S". They are usually consumed in 10 ml for every ten liters of water, and the consumption rate for each tree varies from two to five liters.
Recommended:
Bunchy Grape Roll - The Enemy Of Grapes
The bunchy grape leafworm lives almost everywhere where there are vineyards. She especially actively harms them in the southern regions of Russia. The berries damaged by this parasite either dry up or rot, and along with these destructive processes, the last hopes for a plentiful excellent harvest are fading away
Angry Currant Currant Roll
The crooked currant leafworm lives everywhere and is very partial to berry crops. Most often, it damages currants, blackthorns, mountain ash, various fruit crops, wild rose and hawthorn. Spruce, hazel, buckthorn, birch, oak, larch, barberry, as well as ash, poplar and maple do not escape her attention. So that the destructive activity of harmful caterpillars does not lead to the loss of most of the crop, these gluttonous parasites must be actively combated
Dangerous Mesh Roll
Mesh Roll is a great fan of plums with cherries and apple trees with pears. True, sometimes she is not averse to feasting on leaves of currant and raspberry berries, and a little less often she can attack even beautiful roses and some forest species. Harmful larvae are very harmful to fruits, eating out rather solid areas on their surfaces. To save the long-awaited harvest, these dangerous pests must be dealt with
Fruit Sapwood Is A Dangerous Enemy
Fruit sapwood is almost ubiquitous and damages all fruit crops. True, he loves apple trees most of all. Slightly less often, it can be found on elm plantings, as well as on hawthorn with dogwood. Both the beetles and the larvae of these parasites continuously feed on the not yet dead tissues of noticeably weakened fruit crops. The trees attacked by them freeze in winter, noticeably retard in growth and are characterized by a significant decrease in yield and a deterioration in the quality of the harvested fruits. The emergence
Dangerous Pear Fruit Gall Midge
Pear fruit gall midge, which damages young pear fruits, is found almost everywhere. Fruits, attacked by voracious larvae, first grow at an incredible speed, significantly outstripping healthy ones in size. And after the larvae, which have eaten them entirely, begin to move into the soil, the brown damaged pears shrivel and crack, and after a while they completely dry out. If you do not fight this garden pest, crop losses can easily reach 50
