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Disease/Pest

area wise diseases

Crop Name:

Blackgram

Disease Name/Pest:

Cercospora Leaf Spot

Reported Area:

Panchalavaram of Amruthalur

Symptoms:

These Spots are pale brown in centre & red brownish margin & under favourable conditions severe leaf spotting defoliation occurs at the time of flowering & pod formation.

Causal_organism:

Cercospora canescens

Curative Measures:

Metiram 55% + Pyraclostrobin 5% WG (900-1050 g/ha).
Mancozeb 2.5g (or) Carbendazim 1g Chlorothalonil 1g.

Preventive Methods:

Leave sufficient space between plants to maintain good ventilation.
Mulch the plants to avoid transmission of fungi to lower leaves.
Intercrop with tall growing cereals & millets to avoid transmission between rows.
Crop rotation with non-host crops.
Make sure the soil is well drained.

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