Wisconsin Pesticide Applicator Test Commercial
Category 6.0
Terms in this set (147)
What determines whether a A weed is any unwanted plant
given plant is a weed?
What are the two main The primary goal is to minimize weed competition and
goals of weed the other main goal is to limit the weed's reproduction in
management? order to manage the weed population in years to come.
Grasses are considered monocots, meaning they have a
single seed leaf, they also have narrow leaves with
parallel veins and a fibrous root system. Broadleaf plants
Distinguish grasses from
have two seed leaves and are therefore called dicots,
broadleaf plants and
they have broad leaves with veins that form a net
herbaceous from woody
patterns. Broadleaf plants can be further classified into
plants
herbaceous and woody, where the woody plants have a
thick layer of dense tissue called bark, which
herbaceous plants lack.
Annual plants live for less than a year, they produce
many seeds in one growing season, and then die.
Summer annuals winter as seeds, and winter annuals
winter as a low-growing plant, both summer and winter
annuals are easiest to control when they are small.
Describe the life cycles and
Biennial plants live for two growing seasons, they
propagation of annual,
germinate from seed in the spring or summer and winter
biennial, and perennial
as a rosette of leaves. They flower in their second year,
plants
produce seeds and then die. Both annuals and biennials
reproduce only by seed. Perennial plants live for at least
2 years and sometimes longer, they may reproduce by
seed or vegetatively through several different
mechanisms.
, To kill annuals or biennials, you must kill the whole shoot.
Controlling these weeds with tillage or herbicides will
What is needed to kill kill them plus stop seed production, which will reduce
annual, biennial, and future weed problems. The most effective way to kill
perennial weeds and when perennials is to destroy the underground vegetative
is it easiest to do so? structures by either repeatedly tilling the soil or by using
a herbicide that translocates to destroy all of the plant
parts.
All weeds may start as seedlings and it is most effective
How should you time
to treat the plants at this stage because less energy is
herbicide application with
required to kill the plants at this stage than at any other.
respect to a plant's life
Biennials and Annuals are controlled by a fall or early
cycle and which timing is
spring treatment, and perennials are controlled best with
most effective?
a fall treatment as well.
Soil organic matter and clay particles can adsorb soil-
What are the effects of soil
applied herbicides, meaning more herbicide will be
texture and organic matter
required in these types of soils because the herbicide
content on application of
will be bound to the soil particles and will not be
soil herbicides?
available to be absorbed by the weeds.
Do not apply herbicides to areas where they may leach
How do you keep soil into groundwater, or run off into water sources or
herbicides from moving off cropping areas. Also avoid applying herbicides to areas
target? where desired tree and shrub roots may extend and DO
NOT apply herbicides to frozen soils.
Soil treatments are commonly used when a site requires
residual non-selective control, such as electric
How and when should you transformer stations, rail ballasts and signpost bases.
apply soil herbicides? They can be applied any time that the soil is not frozen,
and some soil applied herbicides need to be
transported by rain to be absorbed by the plant.
Foliar sprays are not recommended for large brush
When are foliar sprays
because of the potential for drift. Foliar sprays should be
appropriate and not
operated from the ground close to the plant and can
appropriate?
either be applied through broadcast or spot application.
, Foliar treatments can be made from the time the leaves
are fully expanded until they begin to turn color in the
fall, but are most effective when applied to fully
What are the factors in
developed foliage of an actively growing plant. They
timing a foliar spray?
should be applied at a temperature between 60 and 80
degrees F, and should have adequate time to soak into
to plant, thus applying right before it rains is ineffective.
How are adjuvants used Adjuvants may be necessary to use for better absorption
most effectively? by foliage that is extremely waxy or hairy.
Foliar applications are put directly onto the foliage of a
growing plant. Basal bark applications are used to
What are the similarities and
control shrubs, canes and thickets or trees up to 5 inches
differences between foliar,
in diameter and are applied to the lower 18 inches of the
cut-surface, and basal bark
stems. Cut-surface treatments are used to control plants
applications?
with thick bark or when they have trunks larger than 5
inches in diameter at the base.
A pesticide is any substance used to directly control
Define and explain pest populations or to prevent or reduce pest damage.
"pesticide". Pesticides can range from anything such as an
insecticide to a herbicide to a fungicide.
What is the difference Organic means the compound contains the element
between organic and carbon, it does not mean it is natural. Inorganic means
inorganic? that the it is derived from minerals that occur in nature.
Chemical name: complies with accepted guidelines
established by chemists.
What is the difference Common name: normally appear on the label before or
between the different types above the chemical name and refers to an active
of pesticide names? ingredient.
Trade name: the name given by the manufacturer,
appears in large letters at the top of the label
Selective herbicides only harm certain plants and leave
Compare selective and
others unharmed. Non-selective herbicides are toxic to
non-selective herbicides:
most or all plants.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller TheAlphanurse. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $15.99. You're not tied to anything after your purchase.
