The Colorado potato beetle is the main enemy of potatoes and other nightshade crops. It is quite difficult to deal with it, since at different stages of its development the insect infects both the ground and underground parts of the potato. It is best to start thinking about control methods before landing. Below we will look at the most effective ways of pre-sowing tubers that will help keep your crop from Colorado potato beetles.
Gardeners resort to folk remedies for processing potatoes in the first place. The reason for this is the safety and availability of such methods. Over the years of fighting the Colorado potato beetle, experienced agronomists have noticed that these insects cannot tolerate some plants and avoid areas with potatoes where they grow. Pests are not friendly with garlic, cilantro, mattiola, calendula, red beets and beans.
It is best to plant a bush of spring garlic between the holes during planting of potato tubers. It will not interfere with nightshade culture. Plant the garlic in a checkerboard pattern for good results. You can also plant it around a potato patch with matthiola or calendula.
In addition, the Colorado potato beetle does not tolerate wood ash, so it has long been customary to add this agent directly to the holes or dip the seed potatoes into it. It is best to use birch ash. Before planting potatoes, it will not hurt to stock up on onion peels, because the insect does not like it either. The husk is crushed and poured into the holes.
Get rid of the Colorado potato beetle and fraudulent methods. Before planting the bulk of the seeds in the garden, they make a deceptive sowing. When a sufficient number of insects have appeared at an early germination, the plants are dug up and burned. 1-2 weeks before the intended landing, several holes 10 centimeters deep are dug on the site. The edges of the pits are sprinkled with hot slag from a furnace or wood ash. Beetles wake up, fall into holes and stay in them. After that, you only need to harvest the insects.
You can also catch beetles in glass jars. Before or immediately after planting, you will need to chop fresh potato tubers and place them in a container. Banks are laid out in the garden, deepening them into the ground. After a while, the containers are taken out and the Colorado beetles are destroyed. They also make bait from tubers poisoned with urea. Slices are laid out in early spring on the site, and insects are poisoned by them.
Synthetic poisons are widely used to treat seed tubers, but before using them, you need to know some general rules. Chemicals are not removed from the soil for a long time, therefore, only mid-early, mid-season and late varieties are suitable for processing. It is better not to process early potatoes with such products. On average, the period of elimination of the poison takes 60 days. Also, worry about your safety immediately before performing the procedures. Be sure to wear rubber gloves, and to prepare the solution, use special containers that are designed specifically for field work and will not be used for harvesting.
One of the most famous preparations for pre-sowing treatment of tubers is called Prestige. This tool has shown its effectiveness in the fight not only against the Colorado potato beetle, but also against other pests and diseases. After planting, the treated tubers form a protective environment around them. Thus, the young plant absorbs active components from the soil and the already ground part of the potato also becomes protected. The prestige is evenly distributed over all organs of the plant, without accumulating in one part of it.
To work, you need 100 milliliters of Prestige and 5-6 liters of water. The ready-made solution is enough to process 100 kilograms of seed. The procedure is carried out using a hand sprayer. Before that, the potatoes are laid out on a thick film in one layer. Be sure to wear a respirator and protective suit to prevent poisons from getting on your skin or respiratory tract. There are other chemicals that can be used to combat pests and fungi.
Excellent performance in the three-component insectofungicide Celest Top. For 1 ton of material, you will need 400 milliliters of the drug. The systemic insecticide Kruiser is highly concentrated. For 1 ton of seeds, 200-220 milliliters of the drug is enough.
For better protection, experts recommend spraying not only potatoes, but also the soil before sowing. Before planting, you can add the drug Aktara. With a consumption of 300 milliliters per 1 ton of seeds, the effect will last 2 months. The bottom of the ridges can also be sprayed with Voliam Flexy and Force products. Voliam Flexy needs to be taken 700 milliliters per 1 ton, and Force - 10-15 kilograms. In this case, the Colorado potato beetle will die even before it reaches the tubers themselves.
How to protect your crops from these harmful insects? What measures should be taken? Find out from the video below.
Potatoes are the favorite food of the Colorado potato beetle. This gluttonous insect destroys the aerial part of the root crop over large areas in a few days. There are many methods for the destruction of this arthropod leaf beetle. One of the most effective and affordable ways to protect the future crop is to process potatoes with tar. Such a simple and inexpensive tool effectively copes not only with the potato beetle, but also helps to keep crops from other pests.
After overwintering underground, Colorado beetles begin to appear on the surface already when the temperature rises to + 10-14 ° C, which occurs in central Russia in late April and early May. After that, adult females actively lay eggs on young, freshly sprouted potato shoots.
The main food for the "Colorado" is potato tops, which are eaten in large quantities by both larvae and adult beetles. Their development from eggs begins during the period when buds and flowers appear on the bushes, it is at this moment that unprocessed potatoes are planted most vulnerable and suffer from the invasion of pests.
If nothing is done at such a time, then Colorado beetles are able to eat almost 80% of the green mass of the bushes, which will entail a strong decrease in crop yield.
On a note!
The danger of the Colorado potato beetle lies in its extraordinary voracity and high reproduction rate. One female during the spring-summer season can lay up to 500 eggs, from which red fast-growing larvae hatch, feeding exclusively on young potato leaves and flowers.
Treatment of planting tubers can be done using commercial preparations with insecticidal and often fungicidal properties. Pre-dressing of root crops before planting protects not only from the Colorado potato beetle, but also from other pests that destroy cultural crops, and in addition, many save them from fungal mold.
Increasingly, they resort to biological products, the treatment with which guarantees stable protection of potato bushes from most gluttonous pests, while remaining absolutely harmless to warm-blooded people and humans. Such a vegetable crop is considered environmentally friendly. The advantage is an increase in germination and yield.
In the old fashioned way, especially when there are not so many potatoes, they try to give preference to proven folk recipes. They are time consuming, but financially inexpensive and safe for health.
When planting tubers, you can use treatment with drugs that are safe enough for human health and the environment. These are biological compounds. They work well if you start using them on time. With the active spread of pests on the site, it will make them inactive, reduce the intensity of eating green mass.
Most often you can find "Bicol", "Fitoverm", "Agravertin". After 7-10 days, the pests die. However, such non-toxic preparations are not able to have an effective effect on the clutches of eggs that will be on potato bushes. For this reason, it is advisable to use them after the appearance of the larvae of Colorado beetles, and repeat the treatment a little later.
Processing potatoes before planting is one of the ways to increase yields, used not only by farms, but also by amateur summer residents. This method has both advantages and disadvantages regarding the oversaturation of potatoes with chemicals. Pre-planting treatment of tubers solves the following tasks:
1. Disinfection. Protects potatoes from fungal and bacterial diseases, reduces the activity of pests. It is done before germination or a couple of days (hours) before planting. In this case, special preparations, for example, Fitosporin ", can be replaced with folk remedies that are easy to prepare at home.
Processing potatoes with potassium permanganate: pour the sprouted tubers with a solution (1 gram of potassium permanganate per 1 liter of water) and stand for 20-30 minutes. Additionally, wet tubers can be dipped in wood ash. Once dry, the seed is ready for planting.
Disinfection with copper sulfate:
Application: make a solution in a non-metallic container (glass, wood or enamel), soak the tubers for 1-2 minutes before planting (preferred method) or spray in plastic wrap. Dry before disembarking. 2-3 days after treatment, you can additionally use growth stimulants, which will be discussed later.
Ash processing of potatoes. In addition to disinfection, it saturates the tuber with potassium.
Application: dip potatoes in ash solution in a net or basket. Dry before planting. An alternative method is to process the soil by pouring 2 tablespoons of ash into one hole.
Treatment with a mixture of fertilizers. It is done before germination.
Application: mix all the components in an enamel container, after cooling to room temperature, lower the tubers, stand for 20-30 minutes, remove. The potatoes are ready for sprouting.
2. Stimulation of growth. Presowing treatment of tubers with growth stimulants activates the development of sprouts and accelerates the emergence of seedlings. It is advisable to process the potatoes 1-2 days before planting in the ground.
There are no folk remedies, more often than others three drugs are used:
3. Protection from pests. Treatment of potatoes before planting from the Colorado potato beetle, wireworm, bear, scoop, May beetle and other pests is carried out with special insectofungicidal preparations, for example, "Prestige", "Aktara", "Maxim", "Masterpiece", "Matador" and others.
For processing, the tubers are laid out on a film spread on the ground, then the selected agent is diluted according to the instructions and sprayed over the potatoes with a spray bottle. All tubers should be wetted. Next, the potatoes are shaken in a film so that it is processed from all sides.
Principle of action - during germination, the agent is absorbed into the tops and leaves from the tuber, protecting the bush from pests. After some time, the active substances are decomposed without residue (theoretically).
It is to insectofungicidal preparations that the most questions in terms of environmental safety. For example, the poison of the most popular Prestige product disintegrates in the soil only 40-60 days after germination. The Prestige treatment is suitable for medium-late and late varieties. According to the reviews of some summer residents, insectofungicidal preparations worsen the taste of potatoes, and there is no guarantee that there will be no chemistry left in the tuber.
Before use, be sure to read the instructions for the selected product, strictly follow the dosage, processing technology and other manufacturer's recommendations.
Combined drugs that can simultaneously perform a disinfecting, stimulating and protective function have appeared on the market. This simplifies the pre-planting processing of potatoes and reduces the cost (often the price of universal means is slightly lower than each separately), but the issue of safety remains.
Prestige is most often used for these purposes. It has gained popularity for its effectiveness in protecting plants from pests, scab, and fungal diseases. It is not recommended to use it when planting early ripening potato varieties.
Good results are obtained with Tabu. To spray 100 kg of potatoes, you need to dissolve 8 ml of the drug in one liter of water. You can process tubers laid out in the holes. The consumption rate in this case is 4 ml per 10 liters of water. This amount is enough to process 1 are. The remedy protects from the Colorado potato beetle for up to 1 month from the moment of germination, and from the wireworm - throughout the entire period.
The systemic fungicide Matador Grand protects tubers from the Colorado potato beetle, wireworm, whitefly, aphids and all kinds of diseases.
Terradox — a tool that allows you to get rid of soil pests: bear, weevil, soil flies, false wireworm and others. It is non-toxic to plants, long-term protection, fast speed of action.
In addition to the funds mentioned, the following drugs should be named:
Treatment with biological products guarantees the protection of plants from pests and does not harm humans.
There are disadvantages of processing tubers:
A very interesting way to protect potatoes from pests is to dip the tubers in a solution prepared with the addition of birch tar. It is prepared at the rate of one tablespoon of tar per one liter of water.
When starting to plant potatoes, you should remember about protective measures to preserve the future harvest.Using modern means for processing seed material, you can maintain high yields. It is important not to exceed the consumption rates of drugs indicated in the instructions.