In warm years, a rust tick causes great damage to greenhouse and ground tomatoes in our region.
In the last century, the pest was distributed mainly in the dry and hot areas of our country. And only recently, due to global warming, he began to develop new territories, gradually moving north and west.
First, the tick affects plants in the open ground. And later, on plant residues, garden tools, and with irrigation water, it goes into the premises of the protected ground.
A rust tick cannot be examined with the naked eye; its length is only 0.14 – 0.24 millimeters. It has a spindle-shaped body, which has a brownish-yellow hue and is often covered with a thin waxy coating.
Over 40 days of life, the female of this pest manages to lay up to 50 eggs on the surface of leaf plates and petioles. She has offspring near the veins, between cracks in the skin and near the hairs.
At temperatures above +27 degrees and increased dryness of the surrounding air, the larva undergoes a full development cycle in just a week.
The insect usually feeds on all the aerial parts of the tomato, including the leaf apparatus, fruits, and stems. First, oblong dirty brown spots form on foliage and stems, which subsequently darken and acquire a purple tint. In this case, the leaves in damaged areas begin to shine due to the death of tissues and their separation from the inner layers of the epidermis.
A rusty tomato tick is able to invade the leaves and stems of plants, where it continues to suck out nutritious juices from them. At such leaves, the edges begin to fade quickly, and they themselves curl around the main vein. It ends with the complete withering away of greenery.
In severe cases, most of the leaves on the plant become brittle, and the stems massively brown and become covered with cracks along their entire length.
At the same time, hard cork-like growths form on the fruits, which makes them lose edibility. As a result of the life of the tick, the productivity of tomato bushes drops sharply, and severely affected plants die.
For the winter, the female pests hide in the greenery of plants of the nightshade family. For example, a pest likes to spend the cold season on a dope ordinary, black nightshade, and bindweed.
It remains unclear when the insects leave for the winter and what exactly provokes their migration in the winter months. Agronomic scientists do not yet exactly know the start date for tick activation in the spring, as well as when the females are taken for egg-laying. In this regard, it is the agrotechnical measures of a preventive orientation that are most effective for combating a rusty tomato mite.
In hot regions, where the risk of encountering this pest is significant, you must strictly follow all crop rotation rules. Generally speaking, plants of the solanaceous family are best placed in opposite parts of the plot and, if possible, plant backstage crops such as corn, sunflower, sorghum, and so on.
In the premises of the closed ground in between planting, thorough spring cleaning should be carried out. It consists of the removal of all organic residues – on containers, tools, elements of the greenhouse design, trellis, from row spacing, and so on – outside the premises.
After this, thoroughly rinse all parts of the greenhouse with a disinfectant detergent. For information on how to disinfect the premises in the greenhouse.
Unoccupied greenhouses, greenhouses, and greenhouses are preferably periodically treated with sulfur drafts.
The natural enemy of the rust mite is the predatory mite p. Amblyseius, which must be brought into the greenhouse at some point to destroy the pest. Of the chemicals in the fight against ticks, Vertimek, Atellik, Karbofos, Kemifos, Fufanon, Fitoverm well help.