🌿 Cotton Disease Identification & Management
Bacterial Blight / Angular Leaf Spot
Bacterial Disease of Cotton • Identification • Symptoms • Management
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Early Symptoms
This is one of the important bacterial diseases of cotton. शुरुआती अवस्था में पत्तियों पर दिखाई देने वाले छोटे धब्बों को ध्यान से देखें।
- Small water-soaked spots may appear.
- Later, the spots may become brown or black.
- The spots often appear in an angular shape bounded by leaf veins.
- Under severe infection, several spots may merge together.
- In severe cases, leaves may dry up and fall.
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Stem Symptoms
When the disease becomes severe, the following symptoms may appear on the stem:
🟤 Long Dark Lesions
Long, dark-colored lesions may appear on the stem.
⚫ Stem Blackening
Under severe infection, the stem may become dark or black.
🌱 Weak Branches
Affected branches may become weak.
🖤 Black Arm
Severe stem symptoms may be observed as the Black Arm symptom.
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Boll Symptoms
Disease symptoms may also appear when the infection reaches the bolls.
🔴 Small Dark Spots
Small dark-colored spots may appear on the boll surface.
📉 Affected Development
संक्रमित टिंडे का सामान्य Affected Development हो सकता है।
⚠️ Boll Rot
In severe cases, boll rot may develop.
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Management
This is a bacterial disease.
Do not consider ordinary fungal fungicides to be the appropriate treatment. Follow local agricultural expert recommendations according to the disease situation.
1
Remove Plant Debris
Do not leave infected plant debris in the field and maintain good field sanitation.
Do not leave infected plant debris in the field and maintain good field sanitation.
2
Use Healthy Seed
Use healthy, certified seed.
Use healthy, certified seed.
3
Seed Treatment
Carry out appropriate seed treatment according to local agricultural recommendations.
Carry out appropriate seed treatment according to local agricultural recommendations.
4
Avoid Excess Moisture
Avoid excessive field moisture and prolonged leaf wetness.
Avoid excessive field moisture and prolonged leaf wetness.
5
Avoid Unnecessary Work in Wet Crops
Avoid unnecessary movement and crop handling in the field during rain or when the crop is wet with dew.
Avoid unnecessary movement and crop handling in the field during rain or when the crop is wet with dew.
6
Do Not Save Seed from Diseased Fields
Do not save seed from a diseased field for use in the following year.
Do not save seed from a diseased field for use in the following year.
7
Copper / Bactericidal Management
In severe situations, seek recommendations for approved copper/bactericidal management from the local agriculture department or agricultural expert.
In severe situations, seek recommendations for approved copper/bactericidal management from the local agriculture department or agricultural expert.
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Identification Tip
Look for these signs:
अगर धब्बे नसों के बीच angular दिखाई दे रहे हैं और शुरुआत में पानी जैसे (water-soaked) दिखते हैं, तो bacterial blight / angular leaf spot की संभावना देखें।
अगर धब्बे नसों के बीच angular दिखाई दे रहे हैं और शुरुआत में पानी जैसे (water-soaked) दिखते हैं, तो bacterial blight / angular leaf spot की संभावना देखें।
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Important Precaution
Use any chemical only according to its recommended label and local agricultural advice.
For accurate disease identification, consider field conditions, symptoms, and advice from a local agricultural expert.