Special Topics on Orchid Diseases and insect pests

Picture 1 anthrax

As shown in the picture, there is also a yellow spot frame in the outer circle of the disease, indicating that the condition of the disease has not been brought under control. if the disease is not dealt with quickly, the orchid of the whole orchid room will be scattered.

Preventive medication for anthrax:

Pesticide name: 50% Shibao wettable powder; action characteristics: broad-spectrum fungicide; usage: 2000 times / 2-3 times / interval 8 days, spray / leaf back, leaf surface; also preventable: anthracnose, leaf spot, mildew, black spot, round spot, ring pattern

Pesticide name: 25% Spock milk; action characteristics: broad-spectrum germicidal fungicide; usage: 1500 times / 2-3 times / 8-day interval spray / leaf back, leaf surface; at the same time, it can prevent: anthracnose, leaf spot, mildew, black spot, round spot, ring streak.

Pesticide name: 80% mancozeb wettable powder; action characteristics: broad-spectrum protective germicidal powder; usage: 800 times / 3-4 times / 6-day interval spray / leaf back, leaf surface; also preventable: anthracnose, leaf spot, mildew, black spot, round spot, ring streak

Pesticide name: 77% can kill wettable powder; action characteristics: broad-spectrum protective fungicide; usage: 1000 times liquid / 3-4 times / interval 7 days, spray / leaf back, leaf surface; at the same time, it can be prevented: Brown spot, anthrax, leaf spot, ring spot, bacterial brown spot.

Therapeutic use and treatment of anthrax:

First, picture 1 clearly shows: in the picture, there is an uncontrolled condition. Pierce several holes in the wound with a toothpick, and then touch the germicidal powder with a brush. Both the positive and negative sides need to be rubbed evenly. This can completely control the infection and recurrence of a single point of illness. 100% effective.

Second, anthrax is a disease caused by mycelium. For example, various shapes of the disease are produced in the picture. When the disease is serious, the transmission rate is even faster than that of vesicular disease, mainly due to poor ventilation, and high humidity is the most likely to get sick.

Third, the use of drugs for single-point condition treatment: Mixianan "water milk" mixed with acyl morphine "powder" were directly mixed to form a paste state, which was used to deal with single-point illness directly.

Picture 2 anthracnose + ring disease

Prophylactic use of anthrax + ring disease:

Pesticide name: 77% wettable powder

Functional characteristics: broad-spectrum protective fungicides

Usage: 1000 times liquid / 3-4 times / interval 7 days, spray / leaf back, leaf surface; at the same time can prevent: Brown spot, anthracnose, leaf spot, ring disease, bacterial brown spot

Pesticide name: 25% Spock milk; action characteristics: broad-spectrum germicidal fungicide; usage: 1500 times / 2-3 times / interval 8 days, spray / leaf back, leaf surface; at the same time, preventable: anthracnose, leaf spot, mildew, black spot, round spot, ring streak

Pesticide name: 50% Shibao wettable powder; action characteristics: broad-spectrum fungicide; usage: 2000 times / 2-3 times / interval 8 days, spray / leaf back, leaf surface; also preventable: anthracnose, leaf spot, mildew, black spot, round spot, ring pattern

Pesticide name: 80% mancozeb wettable powder; action characteristics: broad-spectrum protective germicidal powder; usage: 800 times / 3-4 times / 6-day interval spray / leaf back, leaf surface; also preventable: anthracnose, leaf spot, mildew, black spot, round spot, ring streak

Anthrax + ring disease supplementary note:

1. The cross-infection of anthrax and wheel pattern is difficult to control. It is suggested that 1500 times mixed mancozeb 1000 times should be sprayed on the back and surface of leaves.

Second, the use of Dysenmeng zinc organic copper, inorganic copper, milk milk content of more than 20%, sterilization temperature of more than 29 degrees Celsius, if you must use, please halve the dosage

It can be sterilized at any time in spring, after dusk in summer, at any time in autumn, and when there is a little sunshine in winter morning.

Picture 3 anthracnose + physiological water deficiency

Prophylactic use of anthrax + physiological deficiency level:

Pesticide name: 25% propiconazole EC; action characteristics: broad-spectrum internal absorption fungicide; usage: 1500 times / 2-3 times / interval 8 days, spray / leaf back, leaf surface; also preventable: Brown spot, round spot, anthracnose, leaf spot, leaf tip blight

Pesticide name: 10% Gaoshui Fangsan granule; action characteristics: broad-spectrum internal absorption fungicide; usage: 3000 times / 2-3 times / interval 8 days spray / leaf back, leaf surface; at the same time, it can prevent: Brown spot, leaf spot, black spot, round spot, leaf blight, ring pattern, leaf tip blight, fouling mildew.

Anthrax + physiological water shortage supplement: as long as we have the intention to understand orchids and the characteristics of pesticides, our management work will be easy. Anthrax is no longer a key management work in our orchid garden, and we usually have mixed use at the same time in the prevention of stem rot, prevention and sterilization of rot or leaf spot, anthracnose and so on. This can take into account a lot of prevention work at the same time.

Second, physiological water shortage is generally dry in the air, and since it is an inland climate, it is necessary to artificially subsidize air humidity.

Third, another key cause of physiological water shortage is root injury. we must pay attention to the concentration in daily fertilization and medication, because the orchid pot we currently use cannot clearly see the reaction of Langen at a glance. By the time the orchid leaf reacts, it is too late to save it.

Fourth, it is an old saying that orchids grow roots first. The dryness and wetness of orchids depend on the test to control watering. Watering is the key work of flower cultivation. The principle is to water thoroughly, ventilate, and advise novice orchids to grow flowers with coarse materials.

Picture 4 anthracnose + round spot disease

Prophylactic use of anthrax + round spot disease:

Pesticide name: 40% Baikor wettable powder; action characteristics: broad-spectrum germicidal powder; usage: 1500 times / 2-3 times / 8 days interval, spray / leaf back, leaf surface; at the same time, it can be prevented: Brown spot, leaf spot, black spot, round spot, leaf blight, ring pattern, leaf tip blight, fouling mildew.

Pesticide name: 25% Spock milk; action characteristics: broad-spectrum germicidal fungicide; usage: 1500 times / 2-3 times / interval 8 days, spray / leaf back, leaf surface; at the same time, preventable: anthracnose, leaf spot, mildew, black spot, round spot, ring streak

Pesticide name: 50% Shibao wettable powder; action characteristics: broad-spectrum fungicide; usage: 2000 times / 2-3 times / interval 8 days, spray / leaf back, leaf surface; also preventable: anthracnose, leaf spot, mildew, black spot, round spot, ring pattern

Anthrax + round spot disease supplementary note: there are many kinds of germicidal fungicides introduced above. I hope your good cross-rotation will be enough to prevent and cure these ailments.

Picture 5 Leaf spot

Preventive medication for leaf spot disease:

Pesticide name: 40% Baikor wettable powder; action characteristics: broad-spectrum germicidal powder; usage: 1500 times / 2-3 times / 8 days interval, spray / leaf back, leaf surface; at the same time, it can be prevented: Brown spot, leaf spot, black spot, round spot, leaf blight, ring pattern, leaf tip blight, fouling mildew.

Pesticide name: 50% Shibao wettable powder; action characteristics: broad-spectrum fungicide; usage: 2000 times / 2-3 times / 8-day interval spray / leaf back, leaf surface; at the same time, preventable: anthracnose, leaf spot, mildew, black spot, round spot, ring streak

Pesticide name: 80% mancozeb wettable powder; action characteristics: broad-spectrum protective germicidal powder; usage: 800 times / 3-4 times / interval 6 days, spray / leaf back, leaf surface; also preventable: anthracnose, leaf spot, mildew, black spot, round spot, ring streak

Pesticide name: 77% can kill wettable powder; action characteristics: broad-spectrum protective fungicide; usage: 1000 times liquid / 3-4 times / interval 7 days, spray / leaf back, leaf surface; at the same time, it can be prevented: Brown spot, anthrax, leaf spot, ring spot, bacterial brown spot.

Leaf spot disease supplementary note: as long as we have the intention to understand orchids, after understanding the characteristics of pesticides, our management work will be easy. Leaf spot disease is no longer a key management work for our orchid fan. We usually have mixed use of prevention and sterilization of stem rot or round spot, anthracnose and so on at the same time, so that we can take into account a lot of prevention work at the same time.

Picture 6 Leaf Tip Blight

Prophylactic use of leaf tip blight at ordinary times

Pesticide name: 40% Baikor wettable powder; action characteristics: broad-spectrum germicidal powder; usage: 1500 times / 2-3 times / 8 days interval, spray / leaf back, leaf surface; at the same time, it can be prevented: Brown spot, leaf spot, black spot, round spot, leaf blight, ring pattern, leaf tip blight, fouling mildew.

Pesticide name: 25% propiconazole EC; action characteristics: broad-spectrum internal absorption fungicide; usage: 1500 times / 2-3 times / interval 8 days spray / leaf back, leaf surface; at the same time can prevent: leaf spot, round spot, anthrax, leaf spot, leaf tip blight

Pesticide name: 10% Gaoshui Fangsan granule; action characteristics: broad-spectrum internal absorption fungicide; usage: 3000 times / 2-3 times / interval 8 days, spray / leaf back, leaf surface; at the same time, it can prevent: Brown spot, leaf spot, black spot, round spot, leaf blight, ring pattern, leaf tip blight, fouling mildew.

Therapeutic medication and treatment of leaf tip blight: leaf tip blight is a combination of two diseases. Leaf tip dryness is caused by physiological lack of water, which is caused by root stagnation, rotten roots and poor ventilation. The reason, generally can understand the situation can be targeted at the treatment of sterilization.

Another condition is leaf blight, which is a relatively simple prevention and cure. Please use the germicidal spores described above in rotation.