Soybean plant diseases | Soybean diseases and there control

If you cultivated soybean then facing many problems, so today discuss how to control Soybean plant diseases.

Downy Mildew

Downy Mildew of soybean

It appears as yellow to white patches on the upper surfaces of old leaves. In severe outbreaks entire leaflets are discolored and which will become necrotic spots. Severely infected leaves fall prematurely. A grayish mold like growth is formed on the undersurface of the lesions.

Management

i) Grow resistant varieties

ii) Removed and destroy serious attack plants.

iii) Removed any weeds to improve air circulation.

Soybean plant diseases | Soybean diseases and there control

Brown stem root

Brown stem root is the major diseases of soybean. This disease is a  continuation of seedling blight, Spots various sizes occur on the stem or near the soil level and on the roots. During the summer season, soybean cultivar and types of the pathogen, leaves may develop brown and yellow discoloration between the veins.

Management

Infested soil should not be sown with soybean three to four years

Soybean Mosaic

Mosaic of soybean

This the most damaging symptoms of soybean. It depends on many variety virus strain, age, and environment of the plant infection.  Molting appears as light and dark green patches on individual leaves. Dark green enations may develop along the main veins. The petioles and internodes are shortened with green infections. Seed set is delayed and reduced greatly. Unifoliate leaves on seedling from infected seeds are chlorotic and roll while trifoliate leaves and reduced in size and show mottling and rugosity.

Management

i) Large size seed should not be cultivated

ii) Use pathogen-free seed

iii) Seed and soil treatment.

iv) The value of insecticides to reduce Soybean Mosaic virus  via controlling aphids uncertain

Soybean Rust (Soybean plant diseases)

Soybean rust is one of the most important diseases of possible soybean. It can spread and thin the leaves of the soybean tree. Tenor reddish-brown wounds first develop the bottom of the leaves. Small pustules develop pin the germ, which breaks open and releases masses of tan spots. Early defoliation and reduction in the number of pods, seeds, and seed weight results due to infection of rust.

Management

i) Grown residence variety.

ii) Spray Defoliation or Dithane M-45 @2.5kg per hain 100 liters of water.

 Damping off

Soybean damping off

Damping off, seed and plant deaths can be a serious disease, and there is great economic importance for soybean production. Germination seeds are very often covered with fungal growth. Infection and loss before the infection are common but difficult to detect. Other causes of disease can cause this problem, so it is important to closely monitor the determination of reason. This disease spreads through irrigation water.

Management

i) Plant varieties with partial resistance to Rhizoctonia.

ii) Seed treatment is very important so you can use Ziram or Caption @ 2.5gm/kg of seed

iii) Plant high-quality seeds combined with phensedyl seed treatment with effect for genuine fungus.

iv) Improve drainage facility in the field.

Brown Spot (Soybean plant diseases)

Brown spots may be caused by fungusSeptoria and also called septoria leaf spot. Small brown spots of varying sizes from pinpoint to about 5mm diameter appear on the leaves, and the leaves are yellow and prematurely shed in severe attacks. Which his often related to yellow patches, on one side of the page, more intensified than the other. There are indefinite margins of stem and pod wounds and are dark in the range in size from flecks to larges.

Management

i) Seed treatment with Zineb or Thiram @2.5gm/kg of seeds.

ii) Spray any copper fungicide @2.-3gm/liter of water.

iii) Planting seed should be diseases free seeds.

Root rot

Root rot of soybean

In many places where soybean is grown, the to cause of futithotha and stem ratch is a significant disease. It is an excellent saprophyte of different plant residues and survives for several years as saprophytic mycelium or sclerotia in absence of soybean. This diseases affected then plant should die. The bark of the primary and secondary roots and stems are shredded and show a large number of sclerotia. After severe rainfall, The symptom is usually seen after one to two weeks, and soil most commonly is silence.

Management

i) The Infected plant should be removed and destroyed.

ii) Seed treatment with Brassicol or Benlate @ 2gm/kg of seed.

iii) Soil treatment with Brassicol @2025kg/ha

iv) Spray Dithane Z-78 @200gm/100 liters of water.

Study: Soybean plant information

Study: Soybean insect pest management

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