Plant diseases Flashcards
what causes plant disease (5)
bacteria
fungi like blackspot
virus like TMV
insects like aphids
mineral defeciency
what are common symptoms in plants from disease
stunted growth
discoloured and spotty leaves
pests
malformed leaves
decay
growths - tumour
how to test plant for diseases
garden manual
monoclonal antibody testing kit
laboratory kits
what are the symptoms of TMV
curled leaves
stunted growth
yellow spots
why do the plants get those symptoms from TMV and Rose black spot
less chlorophyll to photosynthesize
how do aphids effect plants
pierce phloem tubes with adapted mouthpiece
what happens to plants as a result of aphids
wilting because it sometimes pierce xylem by accident
yellow leaves because not enough for respiration and chlorophyll not fully formed
what are the two common mineral defeciences
nitrate and magnesium
what is in nitrates needed for plants
the nitrogen in nitrates are found in amino acids to make proteins therefore without nitrate it can’t make proteins like enzymes
what is magnesium used for in plants
used to make chlorophyll therefore with not enough leaves will yellow
