Please enable JavaScript.
Coggle requires JavaScript to display documents.
crop sci, disease control - Coggle Diagram
crop sci
disease control
Blight Fungus Spread from
ground
keepers
Potato clamps
planting of infected seed;
potato dumps
Asexual and Sexual phase
Spreads rapidly in moist warm conditions
Epidemic can be very severe in a 7 to 21 day period
oospores survive in soil
Potato Blight Trial 2002
Untreated
13.5 total yield p\ha
100.0 blight
3.9 saleable yield t/ha
Location : Co. Meath
Fluazinam
31.5 total yield p\ha
21.6 blight
32.4 saleable yield t/ha
Infinito
-
most important disease in country affecting crops
Reduced tuber yield
disease also affects tuber quality
Potato Blight
devastating fungal
disease
total crop loss is
possible
warm
humid weather
Irish
summer conditions
blight
monitored by
Meteorological service
control of potato blight
Frequent spraying with fungicides
19th Century Practices
Burgandy Mixture
8kg CuSO4 + 10 kg
washing soda in 900 litres
Phytotoxic esp in dry years
Bordeaux Mixture
10 kg CuSO4+ 12.5kg
Ca(OH)2 in 1100 litres water
21st century practises
Dithiocarbamates
Early- mid season
Fluazinam
good all season
good on
tuber blight
Newer products also in the market
Zorvec
spraying in 7-10 day intervals depending on
disease pressure