Simple diagnosis of crop diseases
Crops must have suitable environmental conditions during their growth and development. If they are affected by adverse environmental conditions or suffer from parasite infestation, the normal growth and development of the plants will be disturbed and destroyed, and a series of physiological functions and organizational structures will occur. Changes, as well as abnormal appearance in the external form, eventually lead to reduced yield, deteriorated quality, and even death. This phenomenon is called disease. The cause of the disease is called the cause or pathogen. According to different causes, crop diseases can be divided into infective diseases and non-invasive diseases.
Accurate diagnosis is a prerequisite for effective prevention and control. The diagnosis of crop diseases generally begins with on-site investigations and symptom observations; for some common diseases, based on site investigations and symptom observations, basic and error-free diagnosis can be made. Infectious diseases caused by fungal, bacterial, viral, nematode and other pathogenic organisms are contagious. They tend to spread from point to film and gradually spread to the surface. The time of emergence of diseased strains is early. In the evening, the symptoms vary greatly depending on the type of disease. The diseased department often has a layer of moldy, powdery, granular, cotton (filament)-like, and jelly-like substances.
Non-infectious diseases are non-infectious and often occur at the same time in large areas of the field, and are distributed evenly. They do not spread as invasive diseases. There are certain regularities in the site of disease, usually at the tips of the leaves, leaf margins, etc. Symptoms usually manifest as discoloration, necrosis, withering, deformity, etc., and are recoverable. Once the conditions are improved, normal conditions can be restored, especially for some of the patients.
If the on-site investigation and symptom observation cannot be confirmed, collect the diseased specimen and send it to the local plant protection station or plant hospital for laboratory diagnosis.
We mainly export European Chinese onions, garlic and ginger.
Fresh yellow onion and red onion size 60-80mm 70-90mm 90-110mm 10kg/net bag, 20kg/net bag or 25kg/net bag (2019 new crop onion)
Peeled yellow onion and red onion size 60-80mm 70-90mm 90-110mm 10kg / box, 20kg / box, filled with nitrogen, storage time of 90 days.
Frozen onion, frozen onion cube, frozen onion ring 10kg/box or 20kg/box Save for 2 years.
We also offer garlic, ginger and peeled garlic
Our onions have been sold in the Netherlands, the UK, Poland, and Italy, and the quality is very good.
Looking forward to your response, I am very happy to quote you.
garlic.Ginger.onion.peeled onion.peeled garlic.frozen onion pieces
henan junzhian food co., ltd , https://www.junzhianfood-onion.com