plant disease and defences Flashcards
what does a nitrate deficiency do?
Stuns growth
because cannot make proteins
pale green/ yellow (because less chlorophyll)
less photosynthesis
What does a magnesium deficiency do
chlorosis - yellow leaves
less photosynthesis
stunted growth
magnesium makes chlororphyll
what is TMV
Tobacco mosaic virus
What does TMV effect
Tobacco
Tomatoes
Pepper
how is TMV transmitted
plant to plant contact
What are teh symptoms of TMV
leaves turn yellow/ white
in mosaic pattern
What is barley powdery mildew
fungus
what does Barley mildew effect
grass plants and Barley
how is Barley mildew transmitted
spores released and spread with wind
what are the symptoms of barley mildew
fluffy white growth
stops chlorophyll
No photosynthesis
Treatment for barley mildew
Fungicide
what is crown gall disease
bacteria
what is crown gall disease
bacteria
what does crown gall disease affect
most plants
hwo is crow gall disease transmitted
from infected soil
