It should be remembered right away that fruits attacked by fruit flies often fall prematurely, and those that remain on trees are not suitable for consumption or storage.Fruit damage caused by fruit feeding is the gateway to infection by fungi, which causes the fruit to rot.The most troublesome species of fruit are apples and plums. The former is a very common pest of apple trees.
A caterpillar of this species eats the corridor to the seed chamber of the fruit. Worm-eaten fruits fall prematurely and are unfit for consumption or storage.Since the caterpillar has a hidden lifestyle, it is difficult to combat. Good results are obtained when the grasping bands are installed on tree trunks at the end of June.We put corrugated paper bands about 1 meter above the ground and smoke a week after harvesting the fruit.Remember also about harvesting and removing infected, fallen fruit. The plum fruit mainly attacks plums, apricots, peaches, and sometimes also cherries.
The method of feeding the fruit fruit is similar to that of the apple fruit. The caterpillar cuts the pavement in the fruit, it chews through the sieve-vascular bundles, disrupting the flow of nutrients from the peduncle to the fruit. The fruits turn purple and fall off quickly. Older caterpillars eat up the flesh at the pit.Fighting outside commercial orchards is difficult, because the effectiveness of the treatment depends on the correct setting of the spraying date.We perform the chemical treatment when the eggs are in the so-calledthe black head, i.e. during the flowering of the locust tree.
Other dangerous pests are fruiting bodies: apple, pear and yellow-and-yellow, which feed on plums. The larvae of these hymenoptera bite into the fruit buds and dig into corridors under the skin, then bite into the seed box and eat its interior.The inside of the damaged fruit is filled with larvae droppings and an unpleasant smell.Symptoms of damaged fruit are a serpentine-shaped scar on the skin.
Ways to fight snails
Fighting fruiting bodies
The control of fruiting bodies on apple and pear trees consists in spraying trees 5-6 days after flowering with appropriate preparations.A very troublesome pest of sweet cherries is the waterworm.Fruits in which the white larvae of this fly are feeding, soften, rot and cannot be eaten or processed.
Late cherries are particularly affected. In order to reduce the disease, it is recommended to carefully harvest even infected fruit, which we destroy together with the larvae.We can also dig the soil in autumn under a strongly attacked tree and within a radius of about 1 - 1.5 meters from the crown.Chemical control is carried out a week after the emergence of the first flies (at the time of flowering of the locust tree), spraying only later varieties due to the grace period of used funds
