What should I do if I have white rust in mustard greens?

Use 35% methyl pyridin seed dressing by seed weight. Or spray 500 times of 58% methalene-manganese-zinc wettable powder, 600 700 times of 50% copper methalene, or 500 times of 64% alum wettable powder, 250 300 times of 40% aluminum triethylphosphonate (frost blight) wettable powder, 800 times of Pulik water solution, 130 160 grams of 72% manganese-zinc and frost urea wettable powder, 100 130 grams of 69% manganese-zinc enyl wettable powder, 70% manganese-zinc · Ethylene aluminum wettable powder (Jin Taisheng) 280 400 grams mu, 35% downy mildew hydrochloride wettable powder (frost plague buster) 120 200 grams mu, 20% copper pine ester acid copper emulsifiable concentrate (copper Xi) 125 150 grams mu, 50% enoylmorpholine wettable powder (Anker) 30 40 grams mu, every 7 10 days 1 time, continuous control 2 3 times.

At the beginning of mustard white rust, the lesions are light yellow-green, mainly born on both sides of the leaves, mainly on the back of the leaves, and then the lesions expand into white, slightly raised small marks, and finally after maturity, the epidermis is ruptured and scatters a lot of white powder, and when the lesions are severe, the lesions cover the entire leaf surface, causing the leaves to turn yellow. Reinfection is carried out by spreading through diseased leaves, stems, pods and infected seeds, or by wind-borne transmission through sporangia left in the soil from previous stubble.

Prevention and control measures: before sowing and non-cruciferous vegetables are rotated, the residues are removed before land preparation, and plant electronic fertilizer is sprayed to form a soil that promotes planting disease resistance, reduces the residue of pathogens in the soil, and at the same time, plant electronic fertilizer is used to separate from virus infection, without affecting the germination and swelling function, strengthening the respiration intensity, and improving the seed germination rate; When sowing, strip sowing is adopted, the sowing density is strictly controlled, and scientific sowing is conducive to ventilation and light transmission, which can reduce the occurrence of white rust. After sowing, the seedlings should be reasonably fertilized to strengthen ventilation and light transmission, scientifically irrigate to avoid water accumulation, and spray double the leaf protection and strong stem king at the bud stage, so as to promote the thick stem of the plant, the hypertrophy of the leaves, and the fresh and tender leaf color. It should be noted that at the beginning of the disease, it should be sprayed once every 7 days, and the targeted agent should be sprayed every 7 days, and the mixture of 600 times of the intelligent factor film should be sprayed for 2 or 3 times, which can improve the utilization rate of the active ingredients of the agent and improve the control effect.

Water spinach has white rust, which mainly produces lesions on the back of the leaves, and the front of the leaves will appear pale yellow or yellow spots at first, and then gradually turn brown, and the lesions will become larger, and the back of the leaves will also grow round or oval white blisters. 1. Select fields with high and dry terrain, and cultivate deep furrows and high furrows, and there will be no water accumulation when the rain stops. 2. After sowing, use a nurse to cover the soil, and spray an insecticide before transferring, which is an important measure to prevent and control pests and diseases; 3. The organic fertilizer used should be fully decomposed, and should not be mixed with the residues of the crop.

White rust refers to a disease that is prone to occur during the planting period and is fungal. In fact, the plant is sick, the leaves of many green vegetables are easy to be infected, light green dots can be seen on the leaf surface, which will gradually develop into yellow round lesions, and white blisters grow at the lesions on the back of the leaves. If you cut and harvest frequently, you can avoid insects.

If there are bugs. Sprayed with garlic liquid, chili liquor and white vinegar, the effect is still very ideal.

Water spinach has strong adaptability and can be planted in various environments, but because it likes fertilizer and water, it is best to choose loam soil with more clay weight and strong water and fertility retention. According to the moisture-loving and fertilizer-tolerant characteristics of water spinach, water spinach can be planted in a place with fertile soil and close to water sources, which can be planted and sown or cuttings. Because cuttings are relatively troublesome, most growers use seed sowing.

Generally speaking, water spinach likes a warm environment, the suitable outside temperature for growth is between 15 35, higher than 35 or lower than 10 slow growth and the stem fiber increases and thickens, the taste is very poor, the northern planting can be sown in April and August, and the south can be sown in March and July. It was well promoted. Water spinach is a vegetable with low pest and disease effect.

In the field management, only one or two sprays of low-level insecticides can be used to get a good harvest.

Enoylmorpholine, manganese zinc frost urea, manganese zinc methyl frost, downy mildew carb hydrochloride, ethyl phosphorus aluminum manganese zinc, downy mildew pesticides. These drugs can be used to prevent white rust.

Frost urea manganese zinc should be used, this drug has a very fast effect, and the effect is 5 times that of ordinary drugs, so it should be used.

We need to spray with 5% potassium permanganate solution, and then ventilate in time, be sure to water more.

Summary. It grows quickly and needs plenty of water**, and the soil should be kept moist at all times. Loam soil is more suitable for the perfect growth of quinoa.

Because of its short growth period, stems and leaves are its products, and it is necessary to apply fast-acting nitrogen fertilizer in time. Caused by a fungal infection. The temperature difference between day and night is large, the condensation time is long, and it is easy to get sick.

Continuous stubble, low-lying, poorly drained land, overplanted land, over-irrigated land, and land with insufficient fertilizer.

Is this amaranth white rust? What recipe is good?

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It is amaranth white rust, spray 800 times of 25% methacrylin wettable powder at the beginning of the disease, or 600 times of 50% methamanine copper wettable powder, or 58% methamaline and manganese zinc wettable orange touch powder 500 times, or 64% alum wettable powder 500 times, spray 50 60 liters per mu, every 10 15 days 1 time, prevention and control 1 to 2 times. ”

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What is the principle of chrysanthemum and what medicine is good to use?

Cold-tolerant vegetables, like cold potatoes, mild climate, sensitive to heat. The seeds germinated normally in 10 hoods, and the suitable temperature was 15 -20 and the suitable growth temperature was 17 -20. Seeds above 29 organisms are poorly planted by hand, with small and few leaves, thick and old texture.

It can withstand short-term low temperature of about 0; The light requirements are not strict, and it can withstand low light. Artemisia quinoa is a shallow-rooted vegetable.

It grows quickly and needs plenty of water**, and the soil should not be kept moist as often. Fertile soil is more suitable for the perfect growth of Artemisia quinoa. Because of its short growth period, stems and leaves are its products, and it is necessary to apply fast-acting nitrogen fertilizer in time.

Caused by a fungal infection. The temperature difference between day and night is large, the condensation time is long, and it is easy to get sick. Continuous stubble, low-lying, poorly drained land, overplanted land, over-irrigated land, and land with insufficient fertilizer.

Poor grip of the tube cover and poor plant growth are serious diseases. Preliminary studies have found that the complexity of Artemisia quinoa leaf blight may be related to pathogenic bacterial infection, water accumulation in the field, sudden change in temperature of the wood chain, improper fertilization, and herbicide application. Changes in temperature are also responsible for leaf blight, which can easily be caused by a sudden invasion of cold air or a sudden sunny weather after sustained high temperatures.

In the early stage of the disease, 40% sulfur suspension can be used 500 times, 70% methyl tobuzin wettable powder 500 times, or 50% iprodione wettable powder 1500 times, sprayed 2 3 times every other week.

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<> amaranth white rust is a common disease that occurs on amaranth and mainly damages leaves. In the early stage of the disease, it is manifested as a small faded green spot on the front of the leaf, and after enlargement, the lesion is yellow-green, with a nearly round or irregularly shaped small spot with an inconspicuous edge. When the disease is severe, the lesions are connected into patches and become bullous spots, and many blisters make the leaves uneven and the leaves yellow.

Severe onset in rainy, foggy, and sultry weather; Excessive application of nitrogen fertilizer, over-planting and poor ventilation and light transmission are also prone to disease.

1. Amaranth white rust

1. Amaranth white rust is a common disease that occurs on amaranth, mainly harming leaves. At the beginning of the disease, small fading green spots are produced on the front of the leaves, and after enlargement, the lesions are yellow-green, nearly round or irregularly shaped, and the edges are not obvious. The dorsal part of the lesion leaf produces a nearly round or irregularly shaped, slightly raised white blistering spot, which is the spore pile of the pathogen.

In the later stage, after the epidermis of the dorsal vesicular plaque of the leaf is broken, it exudes a white powder, that is, the roe deer sac of the pathogen; When the onset of amaranth white rust is severe, the lesions are connected into patches and become bullous spots, and many blisters make the leaves uneven and the leaves yellow.

2. Severe illness in spring, summer and autumn when it is rainy, foggy and sultry; The disease of continuous cropping, low-lying and poorly drained fields was earlier and more severe. In cultivation, the disease is severe in the fields with too dense planting, poor ventilation and light transmission, and excessive nitrogen fertilizer application.

2. What causes amaranth white rust?

1. Amaranth white rust is caused by the infection of amaranth white rust fungus, which is a common disease that occurs on amaranth.

2. Amaranth white rust fungus prefers low temperature and humid environment. The suitable onset temperature is 0 -25; The optimal environment for the onset of the disease is temperature 10 -30 and relative humidity above 90%. The onset is severe in the middle and late stages of growth, and the incubation period of the disease is 7-10 days.

3. When is the prevention and control effect of amaranth white rust good?

1. The main incidence period of amaranth white rust is from May to October, and the control effect is better during this time period.

2. In the early stage of the disease, mancozeb, copper hydroxide, downy mildew carb hydrochloride and other agents can be sprayed for prevention and control, warning 7-10 days spray 1 time, continuous spray 2-3 times. At the same time, spray 30-50 ml of production-increasing bacteria or 6000-9000 times of phytophanin per mu, and use it alternately, the effect is better. Note that amaranth needs to be stopped 15-20 days before harvesting.

Round, oblong to amorphous blisters on the dorsal surface of the leaf corresponding to the lesion. Because they are buried under the host epidermis, the color of the blisters is often related to the leaf color of the growing site before breaking through the host epidermis. The pathogen of white, dirty white or pale yellow amaranth rust that grows on the green part of the leaf will survive in the soil with oospores and the diseased residues, and can be attacked by air, rain and agricultural operations when the conditions are suitable.

The occurrence of white rust is directly related to humidity, and the surface of the host has a water film before the stubble is harvested, and the residual branches and leaves are removed in time. Strengthen fertilizer and water management, reasonable dense planting, avoid partial application of nitrogen fertilizer, and increase the application of phosphorus and potassium fertilizer. Water water frequently, correctly grasp the reasonable field humidity, drain water in time after rain, reduce humidity and inhibit bacteria.

Diseased strains are found. >< the main incidence of amaranth white rust is in May and October, and the incidence is severe in the rainy, foggy and sultry years of spring, summer and autumn. The disease of continuous cropping, low-lying and poorly drained fields was earlier and more severe. The size of over-dense, ventilated and light-transmitting blister spots varies greatly in cultivation, generally 1 10 mm in diameter. After ripening, the host epidermis ruptures from the top, revealing a white powder, the sporangia of Amaranth white rust fungus. When the disease is severe, the blisters are densely covered with leaves or commissures, resulting in yellow-green leaves, concave and convex sporangia are the main infection methods of the pathogen, which is a white powdery substance, which can be spread by air flow or rainwater sputtering, which is the main way for the spread of the disease, and also the main way of long-distance transmission to adjacent fields, so it is found in the field to be infected.

The pathogen of white rust is widely present in the soil or on the diseased plants of amaranth in the form of mycelium, and can overwinter or summer in the soil or on the diseased plants of amaranth. When the temperature in the amaranth field is low and the humidity is high, the hyphae of white rust will form sporangia and open white rust, although it mainly damages the leaves of amaranth, but as the disease progresses, it can sometimes damage the petioles and young stems of amaranth. For example, if the stalk is harmed by white rust, it will become bent and deformed, and the thickening will be obvious, and it will generally increase by more than 1 time.

Caused by amaranth rust fungus infection and environmental factors. First, amaranth white rust is caused by amaranth white rust fungus infection, which is a common disease that occurs on amaranth. Second, Amaranth white rust fungus prefers low temperature and humid environment, and the incidence probability is greatly increased.

It is because there is no simple disinfection of the soil when planting, and there are many weeds around, and there is no prevention of pests and diseases in the process, so it leads to this phenomenon.

It may be that the soil is not selected correctly, or it may be that the water is not watered enough, the water and fertilization are not replenished in time, and the care is not taken care of in time.

The most important reason may be that there is an error in the rod insertion method, it is very likely that it has been infested by insects, and the roots have rotted.

This is likely to be due to pests and diseases, or the lack of timely spraying of pesticides, and such situations should be dealt with in a timely manner.

It may be that the soil is not so wet, and the sun is not so long, or the fertilizer is not so suitable.