Ginger leaf blight mainly harms ginger foliage, how to prevent ginger leaf blight?

1. Pay attention to the reasonable ratio of fertilizer, and apply phosphorus and potassium fertilizers, especially potassium fertilizers, in the process of applying nitrogen fertilizers. 2. Drug prevention and control can be treated with 70% methyl tobuzine 1000 times, or 75% chlorothalonil 1000 times, in the early stage of the disease of the whole plant foliar spray prevention, spray once every 7 10 days, spray 3 times. 3. Continuous cropping should be avoided in production, and crop rotation of more than 2 or 3 years should be implemented if feasible.

4. It is best not to plant ginger in low-lying land, and ginger fields should be selected with higher terrain and convenient drainage and irrigation.

Pesticides. Because after my ginger is sprayed with pesticides, it will not have leaf blight, so it can be controlled by pesticides.

It can be treated with pesticides, and some pesticides can solve the situation of ginger leaf blight.

Leaf blight:

Ginger leaf blight is a fungal disease, mainly for the damage to the leaves, the initial yellow-brown lesions on the diseased leaves, gradually expand to the whole leaves, the diseased part gives birth to small black spots, and the whole leaves turn brown and die when it is severe.

The prevention and control methods are:

2.In autumn, the diseased leaves are completely removed and burned intensively to reduce the infection of the following year**.

1.Strengthen cultivation management and control the occurrence of diseases. The planting land should be well drained, the soil should be fertile, and organic fertilizers and phosphorus and potassium fertilizers should be added. Control the planting density to ventilate and transmit light, reduce foliar moisture, and reduce the chance of infestation.

Switch to drip irrigation or running water irrigation to reduce the spread of germs.

<> prevention and control of turmeric leaf yellow leaf blight with carbendazim, methyl tobuzin, and fungus toxinqing. You can use 800 times of 50% carbendazim wettable powder, or 1000 times of 70% methyl tobuzin wettable powder, or 500 times of 5% bacterial toxin water agent. It is recommended to alternate the use of the drug, spraying once every 7-10 days, 2-3 times in a row.

Strictly grasp the amount and concentration of pesticides, and do not dilute pesticides with well water.

1. What kind of medicine to take for turmeric leaf yellow leaf blight?

1. Turmeric leaf yellow leaf blight is prevented and controlled by carbendazim, methyl tobuzin, and fungus toxinqing. It can be sprayed with 800 times of 50% carbendazim wettable powder or 1000 times of 70% methyl tobuzin wettable powder, 500 times of 5% bacterial toxin clear water. Spray once every 7-10 days, 2-3 times in a row.

It is advisable to alternate the use of the drug to avoid the development of resistance.

2. Master the dosage and concentration of pesticides, spray the liquid evenly when spraying, and the walking speed, the width and speed of the spraying width should be uniform. Do not work against the wind, especially when spraying pesticides with a motorized sprayer, it should be forbidden to spray against the wind, but should be sprayed downwind upwind.

3. Do not dilute pesticides with well water, the well water contains a large amount of calcium and magnesium substances, diluting pesticides will destroy the emulsification and suspension properties of the agent, reduce the efficacy or even completely lose it, not only affect the prevention and control effect, but also easy to produce pesticide damage.

2. What is the cause of turmeric leaf blight?

1. The pathogen of turmeric leaf blight is gingercoccus cococcus, which overwinters on the diseased residue and produces ascospores in spring, which spreads through wind and rain, insects or agricultural operations. High temperature and high humidity are easy to develop diseases, and the disease is serious when continuous cropping, plant growth is too dense, plant growth, poor ventilation, and excessive nitrogen fertilizer.

2. At the beginning of the disease, the leaves are dark green, gradually thickening and shiny, and the yellow spots between the leaf veins gradually expand, making the whole leaf yellow and withering, and the surface of the lesions is black and small.

3. When is the prevention and control effect of turmeric leaf yellow leaf blight good?

1. Turmeric leaf yellow leaf blight is serious in July and August, and the prevention and control effect is better at this time. The plants can be sprayed 2-3 times continuously with 1:1:150 times of Bordeaux solution before July to prevent the occurrence of diseases.

2. Agricultural prevention and control measures are to do a good job in the disinfection of ginger, timely cultivation and weeding, topdressing and decomposing fertilizer, increasing potassium fertilizer, soil cultivation, and keeping the soil moist.

3. The drug prevention and control measures are to use 300-400 times of carbendazim 50-400 times to fill the nest after receiving the female ginger, or spray 800-1000 times of 50 carbendazim for prevention and control.

Turmeric leaves are a common phenomenon encountered in the planting process, as long as it occurs in a small area, it will generally not affect the plant, but if it occurs in a piece, it will cause a reduction in yield, and there is even a danger of no harvest. Generally, this situation may be the reproduction of bacterial viruses, which can be prevented and controlled with difenoconazole or carbendazim, and at the same time, it is most reliable to find the best to prevent and control it

Causes of yellowing of ginger leaves.

Improper fertilization:The yellowing of ginger leaves may be infected with ginger fever, which is manifested as the first day or fresh leaves turn yellow overnight and spread widely and quickly. This is a fungal virus, most often caused by the use of organic fertilizer (manure) is not fully decomposed, fermentation in the soil to produce ammonia gas, causing a large number of fungal viruses.

Land sterilization is not in place:Before sowing, the ground is deeply ploughed and leveled, and at the same time the soil is sprayed with chlorinated soil fumigant, and then covered with a film to disinfect and kill fungi. (It can be eliminated if the temperature is above 20 for a week).

Delay in film removal:Yellow leaf disease occurs during the growth period, and it is also possible that the film is removed too late, and the soil is too high due to the mulching, which causes the ginger to die due to unadaptation. (Hint: Removing the membrane should be done in time and choosing a cloudy afternoon is the best).

Weather factors lead to:Rainy weather is the high incidence period of yellow leaf disease, because humid and high temperature weather is the most likely to lead to the rapid reproduction of bacterial viruses. At the same time, especially after heavy rain, the ginger field is not well drained, there is more water accumulation and a long time of soaking, which will cause damage to its roots, and finally cause the whole plant to die, and the initial appearance is yellowing of leaves. Therefore, it is necessary to check and sort out the drainage system at any time, and at the same time drain it in time when it causes water accumulation.

At the same time, ginger has a long growth period, and the amount of fertilizer is large, in addition to the application of foot fertilizer, top dressing is also very important, stage top dressing can meet the needs of its growth nutrients, in our south of the rain is abundant, in order to prevent nutrient leakage and loss, the method of topdressing is generally used in a small amount and many times. The first time is to raise seedling fertilizer, in the ginger seedlings 8 10 cm when the human and animal manure is added, the second time is to raise seedling fertilizer, generally in late June, can be applied to rotten rapeseed cake fertilizer. The third time can be applied cooked vegetable cake fertilizer and ash manure, and at the same time, it can be covered with pig manure in the cattle pen to keep the soil moist; The fourth and fifth top dressing is strong ginger fertilizer, which is applied in late July and late August respectively, which can greatly promote the rapid expansion of rhizomes, usually applied with human and animal urine, and can also be watered with nitrogen fertilizer when it lacks fertilizer and yellows.

Summary: This method of fertilization should pay attention to the fact that the fertilizer concentration should not be too large, and should not be poured on the leaves to prevent burns to the root system and ginger leaves, which is also one of the reasons for the yellowing of ginger leaves.

You can choose special pesticides for **, or regular watering, or you can spray some ** drugs to control the temperature.

You can understand the specific cause of the disease, and at the same time, you should choose drugs for **, or prune off dead leaves, and pay attention to fertilization.

In case of this situation, we must prevent it in advance, pay attention to the amount of watering, the amount of fertilizer, be sure to spray pesticides, and carry out it in time.

You can spray pesticides, be sure to pay attention to the fertilization, not too much fertilizer, pay attention to the watering, pay attention to environmental problems.

Generally, there are about two kinds of rotten flowers and leaves, one is caused by pests and diseases and extremely changing temperatures, and the other is overwatering during the breeding process. After it is found that the leaves of the cultivated one-leaf lotus have rotted, they should be treated as soon as possible. You need to find a clean pair of scissors first, and the soil on the plant lacks organic fertilizer, which is likely to cause damage to the roots of the plant, which cannot absorb the fertilizer well, and the nutrients will not be reflected on the leaves.

Mainly calcium deficiency. If the soil of the plot where ginger is planted is acidic, when trace element fertilizer is applied to the ginger field, the calcium ions in the fertilizer will react with the acid ions in the soil to form a precipitate, which cannot be absorbed by the ginger. or partial application of nitrogen, phosphorus and potassium elemental fertilizers, the soil is heavy and acidic; Heavy stubble for many years, many diseases and residues in the field; In fields with insufficient fertility, extensive tillage, and weeds, plant resistance is reduced, and the disease is severe.

Ginger with bacteria, fertilizer is not fully decomposed, organic fertilizer with bacteria or fertilizer mixed with the disease residues of undergraduate crops are susceptible.

After going to the ground, the young shoots can germinate quickly, and the seedlings are planted neatly after planting, so it is a very important technical measure to germinate ginger seeds in advance when cultivating ginger, and the good budding is a particularly critical step related to the high yield of ginger. In other words, small sprouts that are about the same length and thickness are the most suitable large ginger buds. Those large ginger buds that are more than 2 cm long and about 1 cm thick, and have roots at the base are actually a little too large, although they were unearthed early, but the final yield is not as good as the middle buds and small sprouts of ginger.

Layer by layer of green sand and then covered with film, the thickness should be grasped at 30-40 cm, the temperature should be controlled at 20-30 degrees, and the buds can emerge in 8-10 days, and then according to the size of the buds, the quality is divided into grades, and the average amount of seeds per mu is 300-500 kg. And those broken ginger sprouts are taken out and not used. Then there are those gingers that have not sprouted and put them aside and germinate them a second time.

If you don't want to germinate twice, you can also plant it directly, it is slower to sprout, and when it sprouts in the ground, it will grow ginger.

In such a situation, you should water and fertilize in time, and you should also maintain sufficient light, and you should also choose phosphate and nitrogen fertilizers, and you should also maintain ventilation at ordinary times.

Drainage should be carried out. When ginger leaves are like this, it may be that there is too much water in the soil.

Ginger is a delicious ginger food. It's spicy and soft. Use it with a spicy concentration to spread the wind and cold.

Therefore, "walking without raising" is a good method, often used in conjunction with ephedra, cactus, perilla leaves, and cold winds. It has the effect of sweating and soothing the body surface. Sliced ginger and brown sugar can be used in hot soups, not only for cold winds and cold winds, but also for stomach chills and aches.

Ginger has the effect of calming the stomach and relieving vomiting. Can be used for all kinds of vomiting. Banxia stomach flu vomiting, bamboo milk yellow stomach vomiting.

Ginger has the best inhibitory effect on salmonella, which is easy to contaminate summer food with bacteria and easily cause acute gastroenteritis. Consuming ginger in moderation can play a preventive and ** role. The absorption of ginger feet can significantly inhibit the fungus, carbuncle and venom of several bruises.

In fact, ginger is a very important medicine for external wind. For the cold wind, the light ginger soup can play a role in perspiration, and now there are Chinese and Western ginger cola drinks. The most popular is to combine ginger from traditional Chinese medicine with western medicine gum and replace traditional ginger water with sugar.

When ginger is iron deficient, symptoms will begin in the young leaves, yellowing will occur between the veins and in the leaf's fine reticular tissue, while the veins may remain green. The veins are distinctly dark green, with yellow and yellow-green interveins. In severe cases, the leaves gradually turn white, necrotic spots appear, and the leaves gradually wilt, which may lead to growth or plant death.

This disease is the worst enemy of ginger production. Mild disease affects ginger production, severe disease does not ginger, ginger farmers should attach great importance to this, often observe the growth of ginger, once the above diseases are found, we must attach great importance to drug prevention and control, yellow leaf disease should be sprayed turmeric leaves, carbendazil esters, etc., once every 5 days, 2 3 times in a row, fertilization in the ginger growth period, should use as much decaying organic fertilizer as possible to supplement some phosphorus elements, potassium fertilizers and trace elements; If the fertilizer used is of substandard quality (e.g. chloride content is too high); or excessive application of chemical fertilizers, such as compound fertilizers, which can cause the burning of yellow roots and leaves; Do not apply volatile nitrogen fertilizers to avoid damage to ginger leaves caused by volatile ammonia.

First of all, these infected plants or leaves should be cleaned up, and then some relevant pesticides should be sprayed, and the soil conditions should be paid attention to when watering and fertilizing.

If you want to be the best, then you can pay attention to the watering situation, and you will also apply some corresponding pesticides, and you should also pay attention to the situation of chemical fertilizers, do not use too many chemical fertilizers, otherwise it will lead to root burning and yellow leaf disease.

It is necessary to fertilize and prune so that the plants can be provided with nutrients and can grow better.

It may be leaf blight, the leaves of leaf blight turn yellow at the beginning, and the yellow part gradually turns brown and dies. It extends from local to the whole leaf vein, showing brown to reddish-brown leaf margin lesions, with wavy edges and dark color. The prevention and control method is to spray 25% carbendazim wettable powder 600 800 times liquid on ginger seedlings in the early stage of the disease, or 1:

2: 200 times Bordeaux solution, or 600 times 70% zebsen zinc, depending on the condition, every 15 to 20 days, spray 2 3 times. If an appropriate amount of new high-lipid film is added to the spraying solution, the effect of pest control is better.

What is the disease of yellow and dry ginger leaves?

When the disease invades, ginger leaves turn yellow and dry, and may be infected with leaf blight. After discovery, it is necessary to prune the yellow leaves and spray chlorothalonil solution for treatment; Lack of nutrients and release can turn ginger leaves yellow, which needs to be alleviated by applying nitrogen-rich compound fertilizers; Hardening of the soil can also make the ginger leaves yellow and dry. The soil should be loosened in time and enough organic fertilizer should be added to reduce soil erosion.

Disease invasion. Ginger leaves are dry and yellow, which may be affected by diseases such as leaf blight and root rot. When ginger is infected, yellow-brown spots appear on the leaves, which then gradually spread throughout the leaves.

In severe cases, the entire leaf will turn brown and dry. It is necessary to remove the yellow leaves and spray chlorothalonil solution for **.

Lack of nutrients. Let's continue to dive into the topic of this issue.

Ginger needs more nutrients during the vigorous growing season. If the nutrients are lacking, it can cause ginger to grow poorly, causing the leaves to turn yellow and dry out. Apply compound fertilizers rich in nitrogen, phosphorus and potassium in time to supplement nutrition and restore ginger green leaves as soon as possible.

Soil hardening. Ginger is suitable for growing in loose, fertile, well-drained, and breathable soil. If the soil is severely hardened, it will cause the leaves of the tree to turn yellow and dry. At this time, the soil around the root system should be loosened in time, and enough decaying organic fertilizer should be added to reduce its effects.

Stagnant water. After heavy rain, a lot of moisture is produced in the soil, which can damage the roots of the ginger and turn the leaves yellow. Dig drainage ditches in time to drain the stagnant water in the soil and avoid ginger root rot.

Through our introduction, I believe that you have a deeper understanding of what causes ginger leaves to yellow and dry up and what precautions are taken when maintaining.