The first image are the symptoms of the early infections and developmental stage of Xanthomonas bacterial disease.
On the fruits initially the symptoms will be brownish water soaked patches and late turn black making fruits crack in star shape. Translucent irregular shaped water soaked spots with yellow ring are observed on leaves, Black larger sized patches are observed on stems and twigs.
The second image is the infection of Anthracnose disease. The skin on fruits is sunken, irregular black which later develops into the fruits attacking the arils finally.
Management of both diseases may be done with following methods and sprays
1. Adopting clean methods of cultivation with good orchard sanitation.
2. Spray with Borogold 1.5 – 2 gm/L + Plantomycin 1 gm/L and after 5 days Ecomonas 10 gm/L + Econeem plus 1 % - 1 ml/L
a. https://www.bighaat.com/products/borogold-fungicide-preventive-fungicide-broad-spectrum + https://www.bighaat.com/products/plantomycin-bactericide-aries-agro
after 5 days
b. https://www.bighaat.com/products/ecomonas-pseudomonas-florscense-biopesticide + https://www.bighaat.com/products/econeem-plus-azadirachtin-10000-ppm-biopesticide
after 5 days
3. Spray 2 % Bordeaux mixture for effective control of Xanthomonas blight and anthracnose infections.
K SANJEEVA REDDY,
Senior Agronomist, BigHaat.
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