Brinjal, one of the most important Horticultural crops, globally faces threat from Pests and Diseases. This blog explains the main threat in the brinjal crop called “Alternaria Leaf Spot”, leading to significant yield losses if left unchecked. In this article, we'll explore effective measures to control and manage Alternaria Leaf Spot Disease.
What is Alternaria Leaf Spot?
Alternaria Leaf Spot is a fungal disease that affects brinjal (eggplant) plants. It is caused by the fungus Alternaria alternata and Alternaria solani. The disease is most common in warm, humid weather and can cause significant yield losses. If the infection is mild, there may be little to no yield loss. However, if the infection is severe, it can lead to significant yield losses, up to 70% in some cases.
Short Description of Alternaria Leaf Spot
Here is the detail information related to the Alternaria Leaf Spot :
|
Type of Infection |
Fungal Diseases |
|
Common Name |
Alternaria Leaf Spot |
|
Causal Organism |
Alternaria alternata |
|
Affected parts of the plant |
Leaves |
Favorable factors of Alternaria leaf Spot in Brinjal crop
The optimal temperature range for Alternaria leaf spot development is between 20-30°C (68-86°F). High relative humidity (above 90%) is essential for spore germination, infection, and disease development.
Symptoms of Brinjal crop affected by Alternaria Leaf Spot
Main symptoms of plant affected by Alternaria Leaf Spot Disease are :
- Small, round, brown spots on the leaves, which may have concentric rings
- Spots may enlarge and coalesce, causing leaves to wilt and drop
- Fruit may also be infected, developing sunken, brown lesions.
Bio and Organic products for control of Alternaria Leaf Spot Disease in Brinjal crop
Here are the best recommendations of bio and organic products.
|
Products |
Bio/Organic |
Dosage |
|
BIO |
3 grams/ liter |
|
|
ORGANIC |
1.5 - 2 gm/ liter |
|
|
BIO |
1.5 - 2 lit/ Acre |
Chemical control methods for Alternaria Leaf Spot Disease in Brinjal crop
Here are the best recommendations of Chemical control measures.
|
Products |
Technical Names |
Dosages |
|
Propiconazole 25 % EC |
2 ml boost mix in 1 Litre Water |
|
|
Sulphur 80 % WDG |
750 to 1000 grams per acre |
|
|
Thiophanate Methyl 70% WP |
2 gms/ litre |
|
|
Copper Oxychloride |
2gm/ltr |
|
|
Difenconazole 25 % EC |
120 ml - 150 ml / Acre |
|
|
Hexaconazole 5% SC |
3 ml/ liter of water |
|
| Azoxystrobin 18.2% + Difenoconazole 11.4% SC |
1 ml/ liter of water |
Also Know effective strategies for managing Cercospora leaf spot in brinjal in our detailed guide here.
FAQs on Brinjal Alternaria Leaf Spot Control
Q. What is the mode of infection of Alternaria Leaf Spot?
Q. Is Alternaria Leaf Spot a Fungal Disease or Bacterial Disease?
Q. What is the price of an All in One product?
Q. Is this product applicable to specific crops or any crops?
A. The products that are recommended for any type of crop, not specific crops.
Do you know the secret to protecting your brinjal plants from aphids? Uncover it here.
