The cultivation of peas to prevent pests and diseases is the key, what pests and diseases should be

The sowing time is too early, the temperature is high, and the pea grows fast, so that the pea seedlings are prone to overgrowth, and the seedlings are slender. The sowing time is too late, and the temperature is getting lower and lower later, which has a certain impact on the germination of peas, although peas are vegetables that grow in winter, the sun is about 2 hours in the germination, soak in warm water for 7-8 hours to fully absorb the water and wash off the impurities, drench the water, wrap it in a wet towel and put it indoors, and control the temperature to 30 degrees Celsius.

About one, watering once a day in the morning and evening, 3-5 days to bud and sow seeds.

Peas are generally sown together with wheat and are planted around mid-September to October of the lunar calendar every year. In the second half of April and the beginning of May of the lunar calendar of the next year, it will be stored in the granary. And the land is not too wet.

This means that peas are usually the first crops planted in the spring. The earlier you plant, the earlier you can ripen and harvest, as it reduces the chance of damage from high temperatures during the rainy season. That is to say, if you miss the combination of the tongue, you will be damaged by various unfavorable phenomena, so planting peas in October of the ancient calendar is the best time.

Peas do not have strict soil requirements, and can be planted on well-drained sandy soil or newly cultivated land, and it is advisable to loosen neutral soil with high organic matter. Pea is a spring-sown annual or autumn-sown climbing herb.

It has never been good, so named for its stalk climbing. As a food for humans and animal feed, peas are now the fourth soybean crop in the world. After nine replanting, the temperature is high, there should be no problem, or it will affect the yield.

If you want to plant bean seedlings and beans to sell, the diseases of peas are mainly powdery mildew and downy mildew.

Before sowing, the seeds can be disinfected by dipping them in chemicals. Carbendazim can be used after sowing.

If there is a diseased plant, it should be immediately uprooted and burned with other diseased residues, and it should be rushed to seize time, use science and technology, and step on the greenhouse to maximize benefits.

The pests and diseases that should be paid attention to on pea tips are brown spot, downy mildew, powdery mildew, root rot, anthracnose, etc., which have a great impact on the growth of peas and must be prevented and controlled in time.

It should be noted that some aphids, leaf flies, mosquitoes, etc., these two pests and diseases are the most important, and this insect is also very scary, and these two pests and diseases spread very quickly, and there will be some germs, so you should pay attention.

Brown spot disease. Symptoms: Leaves, stems, and pods can all be damaged.

When the leaf is susceptible, it is light brown to black-brown at first, round, with obvious circumference, and then scattered small black spots with the size of a needle tip on the lesion; lesions on stems, brown to black-brown, spindle or oval, slightly concave, light in the middle, darker in the periphery; The lesions on the pod are round to irregularly shaped, **light brown, the edges are dark brown, and they expand inward and spread to the seeds, causing seeds to carry bacteria; The seed lesions are not obvious, and they are dirty yellow or gray-brown when the humidity is high. Brown spot disease is a common disease, and black spot disease, basal rot and brown spot disease are often mixed in production. It is prone to disease when the terrain is low-lying and waterlogged, the drainage is poor, and the soil water content is large; High temperature, high humidity, rain, and insufficient light are prone to disease.

For example, downy mildew, powdery mildew, brown spot, wilt, root rot, rust, anthracnose, leaf miner flies, aphids and so on.

Leaf miners, aphids, root rot, bud blight, rust, anthracnose, powdery mildew, brown spot, root rot, wilt and so on.

What pests and diseases can occur when growing peas? How can it be prevented?

Peas are a common vegetable, very popular with people, and are basically grown in rural areas, but vegetables can be harmed by pests and diseases when they are planted. So what are the common pests and diseases when growing peas? Let's find out together.

Root rot. From small plants to adult plants, it can be sick, and it is most infected by firearms, mainly on firearms, mainly harming the roots and lower stems of plants, and the leaves of diseased plants begin to turn yellow first, and gradually develop to the median position, causing the whole plant to wither. The roots also turn black-brown or earthy red, and the nodules and root hairs are significantly reduced.

The disease is mainly spread by the fungus through the soil, diseased residues and seeds, through the invasion of seeds and roots, and the disease is usually severe in drought years. Prevention method: It can be prevented by mixing chemicals or mixing soil, and carbendazim and chlorothalonil root prevention can be used when the disease occurs.

Brown spot disease. Mainly damage leaves, stems, pods, when the leaves are sick, light purple spots appear, spots spread rapidly in high temperature and high humidity environment, covering the whole leaf, diseased leaves wither and die, and some appear brown irregular shape of the ring pattern. Mainly because the fungus overwinters in the seeds, the wind and rain spread, the seeds are scattered too early or are affected by low temperature and cold, the soil is viscous, the humidity is high, and the nitrogen fertilizer is sandy, and Wangzhuang may also cause this disease.

Prevention method: Implement non-leguminous vegetables and 2-3 crop rotations, and at the same time require seed disinfection, pickled buds, induce production, and proper dense planting when sowing. In the early stage of the disease, it can be continuously sprayed with benzomyl, nail vomiting, and leukophanium blue control, once a week, 2 3 times.

Powdery mildew. Light yellow spots appear in the early stage of the disease, gradually expand to irregularly shaped pink spots, and in severe cases, they are covered with white powder on both sides of the leaves, and eventually wilt and die, and later the pink spots turn gray and cut into many small black umbrella-like particles. Prevention method:

At the beginning of the disease, spray powdered cyanoxin, carbendazim prophylaxis**, spray 2 3 times continuously every 10 20 days.

Broad bean. Commonly known as arch leaf insects, leaf maggots and other polyphagous pests, more than 100 kinds of hosts, mainly harmful to vegetables, celery, cabbage, radish, etc. Prevention method:

When vegetables are harvested, the remaining fallen leaves and weeds in the field can be removed in time, buried less or buried deeply, pest reduction technology, and 31% abiparimine and 5% abibimycosm oil can be used for prevention. Introduce the prevention methods of common pea pests and diseases. I hope it will be helpful to everyone.

Powdery mildew. It is caused by the infection of pea powdery mildew fungus, mainly in leaves, stems and vines, and mostly starts in leaves. At the beginning of the leaf surface, small white powdery yellowish dots appear, and then expand into irregular pink spots, which are connected with each other, and the surface of the diseased part is covered with white powder, and later spread to the stem.

Brown streak, agricultural control: can be rotated with non-leguminous crops for more than 3 years, and seeds, soaked in warm water for 4-5 hours, and then moved into 55 warm water for 5 minutes, put in cold water to cool, dry and sowing. Appropriate dense planting, increase potassium fertilizer.

Downy mildew mainly damages the leaves and stems of peas, generally originating from the leaves, when there are light yellow dots on the leaves, it means that the pest is occurring, and will gradually move from the leaves to the stems. Brown spot disease, which mainly damages the stems and leaves, the disease of the leaves presents irregular light purple dots, which are easy to spread in high temperature and low temperature environments, and will cause the leaves to turn yellow in the middle and late stages. Root rot, this disease is harmful to the pea roots, once the roots are damaged, then the normal growth of the plant will inevitably be affected.

Generally, the bottom leaves turn yellow, and in the middle stage, the whole plant begins to turn yellow, and in the later stage, the roots will be completely damaged. Black shallow fly, mainly is to harm the leguminous plant, the leaves of the damaged plant turn yellow, the stem is hollow, the leaves fall off, the plant withers due to less water, and the middle and late stage of the damage leads to the flowers, English, and leaves fall too early, and the production is reduced. Prevention and control methods:

Disinfection of seeds is to directly kill some bacteria, diseases and pests at the beginning of planting. Do not plant peas in a row on a piece of land, plant some other crops to reduce the occurrence of pests and diseases. Effectively fertilize sparse planting, improve the balance of supply and demand of chemical fertilizers, apply more phosphorus and potassium fertilizers, apply less basal fertilizers, and spray brassica on time to improve disease resistance.

The pests and diseases that will occur when planting peas are, black loon fly, brown spot, root rot, powdery mildew, leaf miner fly, ** method, you can spray the drug, bury the medicine in the soil, and disinfect the seeds before planting.

When planting, pesticides must be sprayed in time, and the right medicine should be prescribed, and water and fertilize should also be selected, and phosphate and nitrogen fertilizers should be selected.

Pea disease and pest control requirements, in accordance with the "prevention first, comprehensive control combined" policy, give priority to the use of agronomic control, physical control, biological control, supplemented by chemical control of harmless control principles, the general season cultivation focus on the prevention and control of aphids and powdery mildew, off-season cultivation focus on the prevention and control of seedlings of bean fly and powdery mildew.

In fact, if such a situation occurs after planting, it can only be sprayed with chemicals, and the seeds should be treated in advance to avoid such insect pests.

1. Remove fallen flowers and fallen flowers in the field in time, and remove the damaged curly leaves and peanings to reduce the source of insects. Plough the land in time to weed and loosen the soil to kill the overwintering larvae and pupa. Winter and spring irrigation can be used in areas where conditions permit.

2. Set up black lights in the bean field to trap and kill adults. 3. Use 150 375 ml of 10% cypermethrin EC per hectare and spray 450 750 liters of water evenly. Or start from the bud, spray buds and flowers once every 10 days, which can be controlled as a pest, and if you need to treat other pests, you should spray comprehensively.

Peas like mild climate, cold resistant not heat-resistant, seed germination temperature is 18, 20, seedling can withstand a 5, low temperature, flowering and pod-bearing period to 15, 18, is appropriate, if higher than 25, it affects fertilization, low pod rate, snow peas for long sunshine vegetables, most varieties of sunshine requirements are not strict (1) pea variety selection and sowing period snow peas are cold resistant but not heat-resistant, Guangdong is suitable for sowing from mid-September to the end of November, often cultivated main varieties are, 1 lotus yang double flower, branching, dark green leaves, single flower or double flower, White, the pod is dark green, the seeds are round, yellowish-white, good quality, strong resistance to powdery mildew, more resistant to storage, 2 large pods and peas, the leaves are green, the leaves are connected to the stem with purple and red spots, the flowers are purple-red, solitary, the pods are large and long, the mature seeds are brown, the quality is crisp and tender, the taste is sweet, the fiber is less, but it is not resistant to storage, the resistance to powdery mildew is weak, 3 safflower medium flower, the flowers are red, single or twin, the pods are large and long, the pod fiber is slightly more, the quality is slightly worse, but it is resistant to storage.

Rust mainly damages leaves. In the early stages of the disease, yellowish-white spots appear on the leaves, with prominent blisters, fragments, and rust powder within the spots. With the development of the disease, dark brown spots appear at the lesion, dark brown powder appears after rupture, and finally the leaves wither yellow, which is extremely harmful.

Rust, mainly spores, overwinters on soil or other diseased residues. The following year continued to do harm. After harvesting, the disease residue is collected and incinerated in time, the soil is deeply turned white, and disinfected once before planting.

When planting, increase the application of phosphorus and potassium fertilizers to improve the disease resistance of the plants, and spray triamcinolone acetonide when the disease occurs to eliminate the disease. Viral diseases have different symptoms at the time of onset, such as leaf atrophy and open pulse atrophy, each with different characteristics. At the onset of the disease, the flowers and leaves are mottled, and some of the leaves become smaller, or the leaves are curled and not extended, and the plant is short.

It is mainly transmitted by insects, but it can also be caused by high temperature climates, arid environments, poor plant drainage, heavy soil viscosity, and excessive nitrogen fertilizer application. Anti-poison or poison netting was sprayed at the beginning of the disease. Anthracnose can occur and grow into plants at the seedling stage, and the cotyledon can be spotted at the seedling stage.

When the temperature is too high, the lesions appear pink and sticky; Leaf spot disease occurs when the adult plant is infected, and the petiole and stem spots appear reddish-brown. When exposed to high temperatures and humidity, the stems and vines can also be spotted. As the disease worsens, the plant decays and dies.

Disinfect seeds and soil before planting, avoid continuous cropping, and rotate with non-leguminous crops for more than 2 years. Strengthen field management, remove and burn diseased plants in time, deepen the soil to prevent the spread of pathogens again, and irrigate the roots with carbendazim wettable powder when the disease occurs.

Purple-brown spots appear on the sides of the leaves, then expand into rounded shapes. Dark green or dark brown mildew spots appear on the surface of the spots. It is easy to develop the disease under high temperature and high humidity, and the disease is more serious than that of rotation, and it is also serious when the ventilation and light transmission are poor.

Lentils are also susceptible to leaf spot during planting. This disease is more serious in continuous cropping areas and can seriously affect lentil yields. In this case, lentils should be rationally applied with potassium fertilizer to enhance their disease resistance.

Solutions such as methyl tobuzin or carbendazim can also be sprayed appropriately. In the process of growing lentils, in order to obtain high yields, it is necessary to properly prevent various pests and diseases. Rust and leaf spot are common diseases during lentil maintenance and should be prevented by spraying with appropriate chemicals.

Reasonable dense planting: lentils are very strong in fertilizer absorption and climbing ability, once planted too densely, it will cause the leaves to grow too vigorously and grab the sun. At this time, it is easy to attract the patronage of borers, and the general planting plant spacing is 33 35 cm, the row spacing is 130 150 cm, and it is appropriate to plant 700 800 plants per mu;

Control methods: before wintering, weeds and debris are all removed, the soil is turned deeply, the eggs are eliminated, aphids reproduce the fastest under the conditions of 23 27 temperature and 75 85 humidity, strengthen management, create an environment that is not conducive to the growth of aphids, and can also use natural enemies to control, and can also be sprayed with chemical agents.