Tag Archives | symptoms

Severe acute respiratory syndrome (SARS) Symptoms, Causes and recent developments

Lack of information about SARS has added greatly to people’s fear of the disease. When the first cases of SARS were reported back in mid-March, not only were scientists unsure where SARS came from, they also knew very little about what has caused it, how it was spread or what differentiated those who are able […]

Write a short note on Symptoms of Bacterial Blight of Rice

This disease is caused by the bacterium Xanthomonas oryzae. The symptoms of the disease are distinguished in three phases. Blighting phase- Straw to yellow coloured strips with wavy margin appear on leaves followed by drying and twisting of tips.

Write a short note on Symptoms of powdery mildew of pea

The attack of pathogen Erysiphe polygoni is marked by minute discoloured patches from which a powdery mass radiates on all sides. These floury white patches first appear on both surfaces of leaves, tendrils, pods and stem.

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