Picture: tomato disease Daquan, prevention methods, please collect!

Tomato is one of the common vegetables, can be eaten raw, can also be cooked into good food to eat, now many people will grow tomatoes at home, but because many people are planting for the first time, have no planting experience before, when there are some diseases in tomatoes can not find out the cause, today to bring you tomato disease pictures and prevention methods, please collect!

Tomato bacterial wilt

1. Tomato bacterial wilt: tomato bacterial wilt is one of the common diseases of tomato, when the disease is serious, it will cause plant bacterial wilt and death, resulting in a serious reduction in yield or even no harvest.

two。 Symptoms of tomato bacterial wilt: first, the top leaves wilted and drooped, then the lower leaves withered, and the middle leaves finally withered.

3. Control methods of tomato bacterial wilt

(1) when buying tomato varieties, choose resistant varieties.

(2) implement rotation grafting.

(3) reduce the humidity and select the disease-free land with good drainage to raise seedlings and plant.

(4) weeding by ploughing and removing pathogens.

Tomato early blight

1. Tomato early blight: the most common area is in Northeast, North and East China, where there are obvious wheel patterns on the fruit, leaves or main stem, so it is also known as ring disease.

two。 Symptoms of tomato early blight: the seedlings are infected, with dark brown spots at the base of the stem and slightly sunken wheels.

3. Control methods of Tomato early Blight

The main results are as follows: (1) choose disease-resistant varieties such as Delia, Otili, Triumph 158 and so on.

(2) Chemical control of tomato early blight: spraying germicidal pesticides at the initial stage of the disease; when the disease is serious, remove central diseased plants, diseased leaves, etc.

(3) attention should be paid to heat preservation and ventilation in the greenhouse, which is helpful to reduce the air humidity in the greenhouse.

3. Tomato blight

1. Introduction to tomato blight: it is one of the common diseases of tomato seedlings in the process of growing. Both newly unearthed seedlings and large seedlings can occur.

two。 Symptoms of tomato blight: the stem base of the diseased seedling turned brown, the diseased part constricted and thinned, and the stems and leaves withered and died.

3. Control methods of Tomato Blight

(1) bed soil disinfection: the seedling bed was sprinkled with metalaxyl and mancozeb to disinfect the seedling bed.

(2) medicament selection: Jiyu green protection 500 times liquid, chlorothalonil, mancozeb, Bacillus subtilis and so on.

IV. Tomato virus disease

1. Tomato virus disease: generally occurs in autumn, mainly fern leaf and stripe virus.

two。 Symptoms of tomato virus disease: mosaic disease is very common, which can appear from seedling stage to adult stage; Fern leaf type plants are relatively short, and the whole plant is yellowish green; streak plough virus disease is mainly reflected in tomato leaves, stems, fruits and other parts, only appear under the condition of high temperature.

3. Prevention and Control of Tomato virus Disease

The main results are as follows: (1) there are many fitness cultivation techniques, such as seed disinfection, crop rotation, land purification, shading measures, formula fertilization and so on.

(2) Drug selection: at the initial stage of the disease, 20% morpholinoguanidine acetate copper wettable powder 500 times liquid, Haohaoke 2% aminooligosaccharide water agent 300 times liquid.

Tomato anthracnose

1. Tomato anthracnose: generally occurs in the middle and later stages of tomato fruit growth and during the period of storage, transportation and sales after harvest, it can also cause fruit rot and cause losses.

two。 Symptoms of tomato anthracnose: the infected fruit first appeared moist and faded spots, which gradually expanded into nearly round or amorphous spots, and in severe cases, the diseased fruit could rot and fall off in the field.

3. Control methods of tomato anthracnose

(1) do a good job of clearing the garden and turning the soil deeply after harvest.

(2) Drug selection: a preventive spray can be made in the young fruit stage.

VI. Tomato navel rot

1. Tomato navel rot: generally occurs in coastal (river) sandy soil areas and dry years, the disease is serious and often causes fruit black spots and rot.

two。 Symptoms of tomato navel rot: at first, water-immersed spots appeared in the navel, and then gradually expanded, resulting in the top of the fruit sunken and brown.

3. Control methods of Tomato navel Rot

The main results are as follows: (1) selecting disease-resistant varieties, pouring enough planting water and covering with sunshade net.

(2) Medicament selection: Aidoushuo or Lufenwei No. 3.

Conclusion: the above 6 kinds are the introduction of tomato diseases, hoping to help breeding pig friends in need. This article is integrated with the relevant professional websites.