Crop Diseases – Awareness & Solutions

Identifying, Preventing &
Controlling Crop Diseases

Potato is a versatile tuber crop originating from the Andes, serving as a major food source worldwide due to its high carbohydrate content and adaptability to various growing conditions. It is essential for diets, industries like chips and starch production, and sustainable farming as a high-yield, short-duration crop.

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Mosaic

Mosaic Disease (Tomato) is a viral disease caused by viruses like Tomato mosaic virus infection and Tobacco mosaic virus infection.

  • Leaves show light and dark green mottling (mosaic pattern)

  • Leaves may become distorted, wrinkled, or narrow

  • Plants show stunted growth

  • Fruits may be uneven in color and poorly developed

  • Spread through infected tools, hands, and plant contact

Using resistant varieties and maintaining field hygiene helps control the disease.

Product That Matches The Disease

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Septoria leaf spot

Septoria Leaf Spot (Tomato) (caused by the fungus Septoria lycopersici infection) mainly affects leaves.

  • Shows small, circular spots with grey centers and dark borders

  • Spots contain tiny black dots (fruiting bodies) in the center

  • Leaves turn yellow and drop early

  • Usually starts on lower leaves and spreads upward

  • Common in warm, wet, and humid conditions

Proper spacing, removing infected leaves, and timely fungicide application help control the disease.

Product That Matches The Disease

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Bacterial Soft Rot

Bacterial Soft Rot (Tomato) (caused by bacteria like Erwinia carotovora infection) is a destructive disease of fruits and plant tissues.

  • Causes soft, watery decay that spreads rapidly

  • Infected tissue becomes mushy, slimy, and foul-smelling

  • Fruits may collapse and leak fluid

  • Bacteria enter through wounds, cracks, or damaged areas

  • Common in warm, humid, and poorly ventilated conditions

Careful handling, avoiding injuries, and proper sanitation help prevent the disease.

Product That Matches The Disease

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Charcoal Rot

Charcoal Rot (Sunflower) (caused by the fungus Macrophomina phaseolina infection) is a serious soil-borne disease.

  • Plants show wilting and drying, especially in hot weather

  • Stem base develops black discoloration with charcoal-like powder

  • Inner stem tissues become shredded and weak

  • Leaves turn yellow, then brown and dry

  • Severe infection leads to premature plant death

Common in hot and dry conditions with moisture stress.

Crop rotation, proper irrigation, and resistant varieties help manage the disease.

Product That Matches The Disease

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Scab

Scab (Potato) (commonly caused by the bacterium Streptomyces scabies infection) mainly affects tubers.

  • Tubers develop rough, corky, raised lesions on the surface
  • Lesions may be circular, cracked, or scabby patches
  • Affects appearance and market quality, but usually not yield
  • In severe cases, lesions become deep and pitted

Conditions:

  • Common in dry, alkaline soils
  • Favored by low soil moisture during tuber formation

Management:

  • Maintain slightly acidic soil (pH < 5>
  • Ensure proper irrigation during tuber development
  • Use disease-free seed tubers
  • Practice crop rotation

Product That Matches The Disease

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Wart

Wart (Potato) (also called potato wart disease, caused by the fungus Synchytrium endobioticum infection) is a serious soil-borne disease.

  • Tubers develop irregular, cauliflower-like warty growths

  • Growths start small and enlarge into rough, brown, and spongy masses

  • Affected areas may turn black and decay over time

  • Infection can also occur on stems, stolons, and eyes of tubers

  • Severely infected tubers become unmarketable and deformed

Conditions:

  • Common in cool, moist soils

  • Pathogen can survive in soil for many years

Management:

  • Use resistant varieties

  • Plant certified disease-free seed tubers

  • Avoid movement of infected soil or tubers

  • Follow strict quarantine measures

  • Practice long-term crop rotation

Product That Matches The Disease

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Late blight

Late Blight (Potato) (caused by the fungus-like organism Phytophthora infestans infection) is one of the most destructive potato diseases.

  • Leaves show water-soaked pale green spots that turn brown to black
  • White cottony growth appears on the underside of leaves in humid conditions
  • Stems develop dark brown to black lesions
  • Rapid spread causes entire plant collapse
  • Tubers show brown, firm rot inside

Conditions:

  • Favors cool, humid weather with frequent rain or dew
  • Spreads quickly through wind, rain splash, and infected plant material

Management:

  • Use resistant varieties
  • Ensure proper field ventilation and spacing
  • Avoid overhead irrigation
  • Apply recommended fungicides (preventive sprays)
  • Remove and destroy infected plants promptly

Product That Matches The Disease

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Brown rot

Brown Rot (Potato) (caused by the bacterium Ralstonia solanacearum infection) is a serious vascular disease.

  • Plants show sudden wilting without yellowing (initial stage)

  • Lower leaves may later yellow and collapse

  • Stem may ooze milky bacterial slime when cut

  • Tubers show brown discoloration in vascular ring

  • Infected tubers develop soft rot with foul smell

  • Creamy bacterial ooze may come out from eyes or cut surfaces

Conditions:

  • Common in warm, moist soils

  • Spreads through infected seed tubers, soil, and water

Management:

  • Use certified disease-free seed tubers

  • Avoid waterlogging and contaminated irrigation water

  • Practice crop rotation with non-host crops

  • Remove and destroy infected plants

  • Maintain strict field sanitation

Product That Matches The Disease

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Dry rot

Dry Rot (Potato) (caused by fungi like Fusarium spp. infection) is a common storage and field disease.

  • Tubers develop sunken, dry, wrinkled lesions

  • Infected areas become hard, dry, and shriveled (not soft)

  • Internal tissue shows brown to dark dry rot

  • Cavities may form inside tubers with powdery fungal growth

  • Infected tubers become lightweight and mummified

Conditions:

  • Common in storage conditions with wounds on tubers

  • Spread through infected seed tubers and handling injuries

Management:

  • Use healthy, disease-free seed tubers

  • Avoid injury during harvesting and storage

  • Store in cool, dry, and well-ventilated conditions

  • Treat seed tubers with fungicides before storage

Product That Matches The Disease

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Black leg

Black Leg (Potato) (caused by bacteria like Pectobacterium atrosepticum infection and related species) is a serious bacterial disease.

  • Stem base turns black, soft, and rotten
  • Plants show wilting, yellowing, and stunted growth
  • Infected stems may become hollow and slimy
  • Tubers develop soft rot with foul smell
  • Plants may collapse easily when pulled

Conditions:

  • Common in cool, wet soils
  • Spread through infected seed tubers and water

Management:

  • Use certified disease-free seed tubers
  • Avoid waterlogging and improve drainage
  • Practice crop rotation
  • Remove infected plants promptly
  • Handle tubers carefully to avoid injury

Product That Matches The Disease

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What products does Ekhande Agro Fertilizers offer?

We provide high-quality fertilizers and crop protection solutions designed to enhance crop nutrition and productivity while promoting sustainable farming practices.

How can Ekhande Agro help improve crop yields?

Our products are formulated to ensure optimal crop nutrition, helping farmers achieve higher yields with lower input costs, while maintaining soil health.

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