What is angular leaf spot of cotton?

Bacterial Blight, also called Angular Leaf Spot, is a disease caused by the bacterium, Xanthomonas citri pv. malvacearum (“Xcm” will be used throughout this bulletin). Bacterial Blight was first described in the United States in 1891 and continues to be a major disease of cotton throughout the world.

Which is associated with black arm of cotton?

Cracking of the stem and gummosis is also observed in infected plants. The resultant breaking of the stem which hang typically as a dry black twig is referred to as the ‘black arm’. The pathogen also reportedly causes blackening of the veins and veinlets, giving a typical ‘blighting’ appearance.

Which disease of cotton is caused by Xanthomonas campestris pv Malvacearum?

bacterial blight of cotton
Xanthomonas citri pv. malvacearum is the causal agent of bacterial blight of cotton (Gossypium hirsutum L.). Xanthomonas citri pv. malvacearum infects plant tissues and organs of cotton during all stages of development beginning with the seedling stage [1].

What is the function of leaf spot?

Effect on plant growth Leaf spots reduce the surface area available on leaves for photosynthesis and so can result in smaller growth and yield of plants. Weakened plants may produce lesser fruit. Virus caused leaf spots reduces chlorophyll in the leaves, resulting in less photosynthetic activity.

Which is the angular leaf spot of cotton paper?

1. Angular leaf spot of Cotton Paper- 403 C Plant pathology PRESENTED BY- YUNUS KHAN MSC FINAL YEAR 4TH SEM SUBMITTED TO – DR. SHARAD BISSA ASST. PROF DEPT. OF BOTANY, JNV UNIVERSITY JODHPUR 2.

What causes angular spots on the leaves of a cucurbit?

What is Angular Leaf Spot This is a leaf disease that results from pseudomonas syringae pv. Lachrymans. It is caused by bacteria that is host-specific, which primarily targets plants that belong to the family of cucurbits. Its symptoms will start out as small, but they can quickly escalate into a bigger problem when you do not treat them.

How to get rid of angular spots on cotton plants?

Dry and hot weather retards disease development. Use of healthy seed from healthy plants. Delinting seeds with concentrated sulphuric acid then floating the delinted seeds in water and removal of the floating seeds. Disinfections of seeds with 1000 ppm streptomycin sulphate solution overnight. Killing of volunteer seedlings.

What kind of plants have angular leaf spot?

Angular Leaf Spot is a Seed-borne Disease Identifying Angular Leaf Spot’s Damage Host Plants As a host-specific disease, angular leaf spot infests only those plants that belong to the family of cucurbits. To be specific, its common hosts include cucumber, melon, zucchini, pumpkin, cantaloupe, summer squash, and strawberry plants. Symptoms