How to control sunflower leaf blight with loose tail

Loose-tailed sunflower leaf blight is a common disease caused by fungal infection, which has a great impact on the growth of loose-tailed sunflower, which makes the leaves dry and the serious ones lead to the death of the whole plant. Serious diseases often occur in rainy days in summer and autumn. In the north, it mostly occurs in the shed with high humidity and high temperature.

The symptoms, regularity, prevention and treatment of the disease are introduced as follows:

Symptoms: the pathogen first infected the leaf tip and leaf edge, the infected area showed brown spots or patches at the initial stage of the disease, the spots or patches gradually expanded and connected with each other in the middle stage, and the leaves showed gray dry in the later stage.

Second, the regularity of the disease: the pathogenic bacteria overwintered on the diseased plants or in the soil, and spread by conidia through wind, rain, spray and watering, and the bacteria invaded from the plant injury □. High temperature, high humidity and unventilated environment are easy to suffer from this disease.

Third, prevention and control methods: strengthen the inspection of epidemic disease, do not introduce diseased plants; strengthen ventilation, avoid rain and spray during the onset of the disease; cut off the damaged branches and leaves in time to prevent further infection, and apply daconine ointment on the injured □ after pruning; if there is a disease, use 70% methyl topzine 800 liquid or 75% chlorothalonil 1000 times liquid spray alcohol, spray 3 to 4 times every 7 to 10 days, can effectively control the disease.

Fourth, diseases and pests and their control: if the environment is dry and poor ventilation, red spiders and shell insects are easy to occur, so 800 times omethoate should be sprayed regularly. Often spraying water on plants can not only keep them green, but also clean the stomata on the leaves.

Control of loose-tailed sunflower leaf blight

Loose tail sunflower (scientific name: Chrysalidocarpus lutescens H. Wendl.): also known as yellow coconut, Aoi Murasaki. Tufted evergreen shrubs or small trees of the genus Palmaceae. The stem is smooth, yellowish green, without burr, covered with wax powder when tender, with obvious leaf marks and ringed striations. The leaf surface is slippery and slender, pinnatifid, long 40~150cm, petiole slightly curved, apex soft.

Sex likes warm, humid, semi-overcast and well-ventilated environment, afraid of cold, weak cold tolerance, young trees potted for interior decoration; native to Madagascar, Africa, and now commonly cultivated in some garden units in southern China; it has related therapeutic effects on hemoptysis, metrorrhagia and so on.

Loose-tailed sunflower leaf blight is a common disease caused by fungal infection, which has a great impact on the growth of loose-tailed sunflower, which makes the leaves dry and the serious ones lead to the death of the whole plant. The symptoms, regularity and control methods of the disease are introduced as follows: first, the disease symptom bacteria first infect the leaf tip and leaf edge, and the infected area shows brown spots or patches at the initial stage of the disease, and the spots or patches gradually expand and connect with each other in the middle stage. In the later stage, the leaves showed gray dry. The pathogenic bacteria overwintered on the diseased plant or in the soil, spread by conidia through wind, rain, spray and watering, and invaded from the plant wound. High temperature, high humidity and unventilated environment are easy to suffer from this disease. Third, the prevention and control method strengthens the epidemic disease inspection, does not introduce the diseased plant; strengthens the ventilation, avoids the rain and spray during the disease period; cuts off the damaged branches and leaves in time to prevent further infection, and the wound is smeared with daconine ointment after pruning; if a disease occurs, it can be sprayed with 1000-fold solution of 70% methyl topzine or 75% chlorothalonil, once every 7 to 10 days, and spraying 3 to 4 times continuously, which can effectively control the disease. Control map of sunflower leaf blight with loose tail

Loose tail sunflower (scientific name: Chrysalidocarpus lutescens H. Wendl.): also known as yellow coconut, Aoi Murasaki. Tufted evergreen shrubs or small trees of the genus Palmaceae. The stem is smooth, yellowish green, without burr, covered with wax powder when tender, with obvious leaf marks and ringed striations. The leaf surface is slippery and slender, pinnatifid, long 40~150cm, petiole slightly curved, apex soft.

Sex likes warm, humid, semi-overcast and well-ventilated environment, afraid of cold, weak cold tolerance, young trees potted for interior decoration; native to Madagascar, Africa, and now commonly cultivated in some garden units in southern China; it has related therapeutic effects on hemoptysis, metrorrhagia and so on.

Loose-tailed sunflower leaf blight is a common disease caused by fungal infection, which has a great impact on the growth of loose-tailed sunflower, which makes the leaves dry and the serious ones lead to the death of the whole plant. The symptoms, regularity and control methods of the disease are introduced as follows: first, the disease symptom bacteria first infect the leaf tip and leaf edge, and the infected area shows brown spots or patches at the initial stage of the disease, and the spots or patches gradually expand and connect with each other in the middle stage. In the later stage, the leaves showed gray dry. The pathogenic bacteria overwintered on the diseased plant or in the soil, spread by conidia through wind, rain, spray and watering, and invaded from the plant wound. High temperature, high humidity and unventilated environment are easy to suffer from this disease. Third, the prevention and control method strengthens the epidemic disease inspection, does not introduce the diseased plant; strengthens the ventilation, avoids the rain and spray during the disease period; cuts off the damaged branches and leaves in time to prevent further infection, and the wound is smeared with daconine ointment after pruning; if a disease occurs, it can be sprayed with 1000-fold solution of 70% methyl topzine or 75% chlorothalonil, once every 7 to 10 days, and spraying 3 to 4 times continuously, which can effectively control the disease.