Kernal Bunt Disease
Causal Organism= Neovossia indica
Symptoms=
· The kernal bunt disease is characterized by the occurrence of partially infected grain in the ear.
· The diseased grains, if crushed, given black spore mass which has peculiar stinking smell.
· Only a few grains are attacked in the ear.
· Infection takes place only in the flower buds soon after the oars have emerged of the boot leaf.
Favourable
condition =
Optimum temperature= 15-35 degree
Relative humidity= 82%
PH= 6.0-9.5
Disease cycle =
Perennation= through seed, soil
Primary infection= through seeds, farm equipment.
Secondary infection= through contaminated seeds, and spread thought wind.
Disease cycle Diagram of Kernal bunt disease:
Management =
Cultural method
· Proper tillage application applies in field.
· Proper weed management application applies in field.
· Remove all infarcted part of the plant.
· Use disease registrant varieties. E.g., WHD 943, PWD 291 etc.
· Proper spacing maintain between row to row and plant to plant
· Proper light or ventilation maintain in the field.
· Proper field sanitation application applies in field.
Chemical method
· A single spray of till / folics 25EC 200 ML / area in 200 L of water at ear emergence stage should be given to the wheat crop must for seed production only.
