tan spot, septoria,ergot

Question 1

2 types of spores produced by tan spot

Answer 1

ascospores (sexual)
Condidia spores (asexual)

Question 2

the difference between leaf lesions in tan spot and leaf lesions in septoria tritici blotch?

Answer 2

tan spot is oval/diamond in she a well as you can see the pycnidia but with septoria tritici blotch it is very visible on the leaf lesions

Question 3

2 methods for controlling septoria and why they are used?

Answer 3

• crop rotation that includes non cereal crops for at least 1 yr bc after 1 yr the viability is reduced of disease
• destroy volunteers like wheat and rye bc they can be hosts for the disease

Question 4

ergot is becoming more of a problem in MB. 2 reasons why this is a major issue for farmers.

Answer 4

it reduces the grade / quality of grain as well it is toxic to man and animals

Question 5

management for avoiding ergot bodies in your grain

Answer 5

avoid grasses, tillage

Question 6

how do kernels look when effected by tan spot

Answer 6

reddish colour like a smudge

Question 7

symptoms of tan spot?

Answer 7

tan lesions with dark central spot
presence of yellow halo
blotches have pointed ends

Question 8

disease management for tan spot

Answer 8

crop rotation

wide row spacing so its harder to spread through rain splash as easily

Question 9

septoria the two casual agents?

hosts?

Answer 9

septoria tritici blotch
stagonospora nodorum
what barley oats

Question 10

symptoms of septoria

Answer 10

yellow bordered lesions
pycnidia are visible and black dots
spread between veins