Complete Picture Guide to Tomato Diseases and Their Prevention and Treatment Methods, Worth Saving

Tomatoes are one of the common vegetables; they can be eaten raw or cooked into delicious dishes. Many people now grow tomatoes at home, but because many are first-time growers with no previous growing experience, when tomatoes develop certain diseases they cannot find the cause. Today we bring you the complete picture guide to tomato diseases and their prevention methods, so please save it!

1. Tomato bacterial wilt

1. Introduction to tomato bacterial wilt: Tomato bacterial wilt is one of the common tomato diseases. When it occurs severely, it can cause plants to wilt and die while still green, leading to severe yield reduction or even total crop failure.

2. Symptoms of tomato bacterial wilt: The top leaves first wilt and droop, then the lower leaves wither, and the middle leaves wither last.

3. Prevention and treatment methods for tomato bacterial wilt

(1) When buying tomato varieties, choose disease-resistant varieties.

(2) Implement crop rotation and grafting.

(3) Reduce humidity and choose disease-free plots with good drainage for raising seedlings and transplanting.

(4) Cultivate and weed to remove the pathogen.

2. Tomato early blight

1. Introduction to tomato early blight: It occurs most often in Northeast China, North China, and East China. Distinct concentric rings appear on fruits, leaves, or main stems, so it is also called target spot disease.

2. Symptoms of tomato early blight: When seedlings are infected, dark brown lesions form at the base of the stem, slightly sunken and with concentric rings.

3. Prevention and treatment methods for tomato early blight

(1) Choose disease-resistant varieties such as Diliya, Outili, and Kaixuan 158 for planting.

(2) Chemical control of tomato early blight: Begin spraying fungicides at the early stage of the disease; when the disease is more severe, remove the central diseased plants and diseased leaves;

(3) In greenhouses, pay attention to heat preservation and ventilation, which helps reduce the air humidity inside the greenhouse.

3. Tomato damping-off

1. Introduction to tomato damping-off: It is one of the common diseases of seedlings during tomato growth, and both newly emerged seedlings and larger seedlings can be affected.

2. Symptoms of tomato damping-off: The stem base of diseased seedlings turns brown, then the diseased part constricts and becomes thin, and the stems and leaves wilt and die.

3. Prevention and treatment methods for tomato damping-off

(1) Seedbed soil disinfection: Spread medicinal soil made of metalaxyl plus mancozeb on the seedbed to disinfect the seedbed.

(2) Chemical choices: Jiyu Lvhu 500-fold solution, chlorothalonil, mancozeb, Bacillus subtilis, etc.

4. Tomato viral disease

1. Introduction to tomato viral disease: It generally occurs in autumn and mainly consists of fern leaf virus and streak virus.

2. Symptoms of tomato viral disease: Mosaic-type disease is very common, and symptoms can appear from the seedling stage to the adult plant stage; fern-leaf-type plants all appear relatively short, and the whole plant takes on a yellow-green color; streak virus disease mainly appears on multiple parts of the tomato such as leaves, stems, and fruits, and only appears under high-temperature conditions.

3. Prevention and treatment methods for tomato viral disease

(1) Seed disinfection, crop rotation to purify the land, shading measures, formula fertilization, and many other health-promoting cultivation techniques.

(2) Chemical choices: At the early stage of the disease, use 20% moroxydine hydrochloride and copper acetate wettable powder 500-fold solution, or Haohan Gaoke 2% amino-oligosaccharin aqueous solution 300-fold solution.

5. Tomato anthracnose

1. Introduction to tomato anthracnose: It generally occurs in the middle and late stages of tomato fruit growth, and can also cause fruit rot during storage, transportation, and sales after harvest, causing losses.

2. Symptoms of tomato anthracnose: Infected fruits first show small, wet, discolored spots, which gradually expand into nearly round or irregular lesions. In severe cases, diseased fruits can rot and drop in the field.

3. Prevention and treatment methods for tomato anthracnose

(1) After harvest, do a good job of clearing the garden and deep-plow and sun the soil.

(2) Chemical choices: A preventive spray can be applied once at the young fruit stage.

6. Tomato blossom-end rot

1. Introduction to tomato blossom-end rot: It generally occurs in sandy loam areas along the coast (rivers) and in dry years, and when severe it often causes black spots and rot on the fruit.

2. Symptoms of tomato blossom-end rot: It first appears as a water-soaked lesion at the blossom end, which then gradually expands, causing the top of the fruit to become sunken and brown.

3. Prevention and treatment methods for tomato blossom-end rot

(1) Choose disease-resistant varieties, water thoroughly when transplanting, and use shade netting coverage.

(2) Chemical choices: Aiduoshou or Lufenwei No. 3.

Summary: The above 6 are the introduction to the complete guide to tomato diseases. We hope it can help fellow growers in need. This article is compiled from relevant professional websites.