2024 Author: Gavin MacAdam | [email protected]. Last modified: 2023-12-16 13:38
The pea scoop is an unusually beautiful and very colorful garden pest. Despite its name, she loves to feast on far not only peas - potatoes, corn, onions, flax, sugar beets, other legumes, as well as a huge number of other vegetable, garden and field crops are also very attractive to her. The pea scoop will not refuse from some weeds. Such a variety of taste preferences of this pest induce many summer residents to take active measures against it
Meet the pest
The pea scoop is a very attractive butterfly with wingspan ranging from 36 to 42 mm. Its black-brown front wings are decorated with transverse yellowish lines. The kidney-shaped and round spots are grayish-brown, and right between them you can see black triangles.
The size of light yellow pea scoop eggs is about 0.75 mm. The length of the tracks can be up to 29 to 43 mm. The caterpillars themselves are incredibly beautiful: nature has generously decorated their green little body with two dorsal stripes of bright yellow color and a black velvety back. The size of dark brown pupae wintering in cocoons in the soil ranges from 18 to 19 mm.
Butterflies start flying out in May. The period of their departure takes a fairly substantial period of time and often lasts until mid-September. Flowering plants provide additional food for these butterflies. Females begin to lay eggs in groups of one layer and in fairly regular rows. As a rule, in one clutch there are from 50 to 400 eggs and such ovipositions are located mainly on the lower sides of the leaves.
The revival of voracious caterpillars occurs approximately 8 to 10 days later. For a whole month, these parasites damage the juicy leaves. Then, the caterpillars of the first generation, which completed their development, migrate en masse into the soil around July for subsequent pupation. The years of the second generation butterflies are celebrated approximately in August-September. At the same time, caterpillars of the second generation also develop, forming dense cocoons in the soil, in which they subsequently pupate and remain until the onset of spring. Two whole generations of pea scoops develop in one year.
How to fight
The pea moth population is capable of reducing some parasites. On caterpillars, up to several dozen riders, as well as tahin flies, regularly parasitize. You can also meet regularly and eulofid, chalcid and braconid. And eggs are often infected with trichograms.
At the beginning of the laying of eggs and the emergence of butterflies, a two-time release of trichograms is an excellent measure of control against each generation of pests. And at the beginning of the revival of voracious caterpillars, the use of biological products will do a good job. Insecticides are recommended only as a last resort. Usually for spraying use "Decis", "Zolon", "Phosphamide" and "Metaphos". Khostakvik and Aktellik have also proven themselves quite well. The first edging is usually carried out at the budding stage. With an interval of seven to eight days, the second and third treatments are carried out, also marginal. Whole plantings are processed only if the pea scoop begins to multiply en masse. In this case, the last processing is always carried out three to four weeks before the start of the harvest.
Some agrotechnical measures can also provide good help in the fight against the pea scoop, the main among which are the destruction of weeds, cultivation and autumn plowing of the soil. As for the rules of crop rotation, it is not recommended to place pea crops in areas where any legumes previously grew.
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We Fight The Pea Moth
The pea moth with great pleasure relishes not only on peas, but also on lentils. And although only one single generation of this parasite develops in Russia per year, it can cause considerable damage. Only timely measures and all kinds of preventive measures will help to cope with such a scourge
Pea Powdery Mildew
Powdery mildew attacks late pea crops with particular force. Most often this happens in the central black earth regions. In addition to peas, this attack is capable of affecting some other legumes (rank, broad beans and vetch). Powdery mildew can be noticed immediately, as soon as the peas bloom, and this ailment develops until the end of its growing season. Infected crops begin to lag behind in development, and the harvest is characterized by rather small volumes and very low quality
Pea Anthracnose
Pea anthracnose is the spotting of the stems of this crop, as well as of its leaves and beans. In appearance, this ailment resembles ascochitis. However, in comparison with ascochitosis, anthracnose affects peas much less frequently. And plants can be affected by them throughout the growing season. Pea anthracnose was first discovered in Western Siberia. And this is not surprising, since its development is most often observed in the northern regions, characterized by wet and cool summers
We Fight The Pea Weevil
Pea weevils love to feast on peas and live almost everywhere. They usually enter pea crops together with the sown seeds. A considerable number of them fly to crops and from wintering places. Especially many pea caryopses can be seen at the end of May, when antennae begin to form on the plants, as well as during the period of bud formation and at the very beginning of flowering. Crops begin to colonize with these parasites, usually from the edges, slowly covering the remaining area
Pea Rust
Pea rust is a common disease. In addition to peas, it affects lentils, rank, clover, alfalfa and other legumes. The development of this harmful ailment is largely facilitated by abundant dew with frequent precipitation, as well as temperatures in the range from twenty to twenty-five degrees. Only hot and dry weather can hold back the development of the pathogen. If the peas are severely affected by rust, then the beans are noticeably underdeveloped, and the dried leaves fall off rather quickly. Shortage ur
