ergot of cereals

Question 1

Ergot pathogen

Answer 1

Casual agent- clavicles purpurea, ascomycete
facultative parasite, ascu formed in perithecium
hosts- rye, wheat, barley, oats

Question 2

Significance of ergot

Answer 2

yield losses low, but importance is due to sclerotia produced in spike is poisonous to people and animals when ingested “ergotism”

Question 3

The problem with Ergot in cereals

Answer 3

termination of gestation in animals 
loss of limbs 
gangrene
convulsions
greater than .1% are considered to be dangerous

Question 4

Disease ergot in cereals cycle

Answer 4

germinate ein spring by forming perithecia . Ascospores are released and infect flowers of grasses

Question 5

honey dew droplets

Answer 5

formed on where and contribute additional inoculum. sclerotium is ormed in infected flowers, replacing seed
mixed in with seed when harvested

Question 6

Pattern of infestation

Answer 6

wheat plants on edges of field, as infect transmit disease closer to the source of inoculum

Question 7

control of ergot

Answer 7

1-2 years
deep plugging to bury sclerotia
harvet edges separately
clean seed to remove Sclerotia

Question 8

LSD

Answer 8

hallucinogenic drug derived from ergot . it is a white powder but as a street drug it is a liquid