1
Aquatic Pest Control Questions and
Correct Answers
Question: what is the best way to control troublesome plankton and
filamentous algae
Answer: nutrient management.
Question: is chemical control recomended for algae?
Answer: not practical for large areas. $ and control is not adequate. for
smaller water bodies - can help with repeated applications. combine with
nutrient managemetn
Question: Macrophytic (Chara & Nitella)
Answer: leave em alone - beneficial
removal can allow eurasian watermilfoil to move in
If bad though - chemical control - see algae
Question: american eelgrass
Answer: excellent wildlife food
- growth excessive in July & August
- hand pull, rake or screen
not recommended - systemic products work best
Question: Brazilian Elodea
Answer: prevent spread by inspecting boats and fish buckets.
manual pulling, raking and dragging.
remove all fragments from water
Pretest - Stuvia US
, 2
manual pulling chill too for small pop
mechanical for large & harvest
draw down effective for 3 yrs
systemic herbicide in early summer
Question: Canadian eloda
Answer: beneficial - fish like
often miststaken for Brazilian
hand pull or systemic herbicide
Question: coontail
Answer: beneficial young fish like
manual pull, rake or screen
avoid fragmentation
systemic herbicide - early spring
contact herbicide - shallow roots are limited - not best
Question: fanwort
Answer: manual harvesting -small pop
raking and dragging
mechanical - larger
fragment grower
tiploid grass carp
systemic herbicide
Question: hydrilla
Answer: exotic bad news
Pretest - Stuvia US
Aquatic Pest Control Questions and
Correct Answers
Question: what is the best way to control troublesome plankton and
filamentous algae
Answer: nutrient management.
Question: is chemical control recomended for algae?
Answer: not practical for large areas. $ and control is not adequate. for
smaller water bodies - can help with repeated applications. combine with
nutrient managemetn
Question: Macrophytic (Chara & Nitella)
Answer: leave em alone - beneficial
removal can allow eurasian watermilfoil to move in
If bad though - chemical control - see algae
Question: american eelgrass
Answer: excellent wildlife food
- growth excessive in July & August
- hand pull, rake or screen
not recommended - systemic products work best
Question: Brazilian Elodea
Answer: prevent spread by inspecting boats and fish buckets.
manual pulling, raking and dragging.
remove all fragments from water
Pretest - Stuvia US
, 2
manual pulling chill too for small pop
mechanical for large & harvest
draw down effective for 3 yrs
systemic herbicide in early summer
Question: Canadian eloda
Answer: beneficial - fish like
often miststaken for Brazilian
hand pull or systemic herbicide
Question: coontail
Answer: beneficial young fish like
manual pull, rake or screen
avoid fragmentation
systemic herbicide - early spring
contact herbicide - shallow roots are limited - not best
Question: fanwort
Answer: manual harvesting -small pop
raking and dragging
mechanical - larger
fragment grower
tiploid grass carp
systemic herbicide
Question: hydrilla
Answer: exotic bad news
Pretest - Stuvia US
