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Pesticides: Right-of-way & Natural Areas Questions With Correct Solutions, Already Passed!!

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Definition of a weed: - ️️Unwanted plants: A plant can be a weed in one spot but not a weed in a different spot. Two main goals of weed management: - ️️1. Minimize weed competition. (They compete with desirable species) 2. Limit the weed's reproduction (This makes them more manageable in years to come) How do you distinguish grasses from broadleaf plants? - ️️*Grasses (or monocotsthey have a single cotyledon at germination)*: -have narrow leaves with parallel veins -fibrous root system -reproduce mostly by seed, stolons, or rhizomes -the growing point is usually at or below soil surface --growing point is at top of the plant once it reaches the flowering stage -usually produce tillers (secondary stems) form buds at the base of the primary stem *Broadleaves (dicots- two cotyledons at germination)*: -have leaf veins that form a net-like or branching pattern -generally have a tap root -growing point is visible at tip of shoot -most species reproduce by seed, but some have vegetative buds either in the crown or on the taproot, and some reproduce by spreading roots -*are further classified as either herbaceous or woody plants* How do you distinguish herbaceous plants from woody plants? - ️️*Two types of broadleaf plants* Herbaceous Plants: -lack hard, bark layer Woody Plants: -have a thickened layer of dense tissue (bark) on the outside of stems -trees, shrubs, vines Describe the life cycles and propagation of *annual* plants: - ️️Annual weeds live less than 12 months and can produce lots of seeds in a single growing season. Many of these seeds germinate the following year, but others may not germinate for severalyears. Annuals are most troublesome in cultivated areas and disturbed sites (e.g. newly planted areas). *Summer annuals* germinate from seed int eh spring, flower and produce seed during the summer, and die in late summer or fall. They overwinter as seed and are most serious in spring-seeded ornamentals. *Winter annuals* germinate from seed in the fall, overwinter as low-growing plants, flower and produce seed the next spring, and then die. Describe the life cycles and propagation of *biennial* plants: - ️️Biennial weeds life for two growing seasons. Germinate from seed in spring/summer and produce a "rosette" of leaves on the soil surface. Biennials overwinter in this rosette stage. The following year they flower, produce seed, and die. Describe the life cycles and propagation of *perennial* plants: - ️️Perennial plants live for at least two years, and sometimes much longer. They may reproduce by seed alone, or may spread vegetatively by: stolons, rhizomes, spreading roots, tubers, or bulbs. Perennials that germinate from seed often don't flower during their first year. The top growth of herbaceous perennials flexed back each winter, so their survival depends on storing food in underground vegetative structures. They resume growth the following year, in which they flower and set seeds. They continue to do this every year thereafter. Outline what you need to kill *annual* plants and when is it easiest to do so? - ️️Annual weeds are generally the easiest to control, but due to abundance and high seed production, it can be costly. Both summer and winter annuals are easiest to control when they are small. Annuals and biennials reproduce only by seed. Controlling these weeds with tillage or herbicides will kill them and stop seed production, which will reduce future weed problems. To kill annuals or biennials, you must kill the whole shoot. Tillage or and herbicides are often more effective than mowing because mowing may not remove all the growing points (in grasses, the growing point remains at ground level and in protected within the stem during the seedling and tillering growth stages).

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Pesticides: Right-of-way & Natural Areas
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Pesticides: Right-of-way & Natural Areas

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Right-of-Way Pest Management
(Category 6)
Why should you monitor your control strategies? What information should be recorded?
- ✔️✔️Controls should be recorded and evaluated so that adjustments can be made
when necessary.

Records should include: control measures, and the starting date for each. Rate for any
pesticides that were applied. Identification of equipment and crew. Environmental
conditions. Evaluation of effectiveness. Problems encountered or complaints reported.
Any damage claims.

List the four categories of control methods and briefly explain each. - ✔️✔️-Biological:
Focuses on enhancing the effects of natural enemies of pests.

-Cultural: Creates. optimal growing conditions for the pests you want to preserve, or
unfavorable conditions for the pests.

Mechanical: May be mechanical or manual removal (cutting, etc.) ]

Chemical: Use herbicides and or Pesticides

how does shading work as a cultural control? where is it often used? - ✔️✔️Works to
block sunlight from unwanted plants to keep them from growing. Often used in aquatic
ecosystems to control weeds by shading them with black plastic, adding dye to the
water, or other methods of blocking sunlight.

How have public attitudes changed about vegetation and its control in right-of-ways? -
✔️✔️Now only certain plant species are considered undesirable- as in the past ALL
woody vegetation was considered undesirable. So now, others are usually left on the
right-of-way for other benefits.

________ is the use of available tactics or strategies to manage pests so that
acceptable control can be achieved. - ✔️✔️IPM (Integrated Pest Management)

why must weeds and woody plants be managed on rights-of-way? - ✔️✔️For safety,
access to facilities, decrease maintenance costs, reliability of service, and for other
benefits like aesthetics, wildlife, and environmental protection

True or False: The first component of an effective pest management program is pest
identification - ✔️✔️True

, When identifying a pest, what other information should be collected about the pest? -
✔️✔️Pest life cycles, physiology, reproductive potential, and the past control results

List several examples of different sites that might have site specific requirements -
✔️✔️-Urban, suburban, or rural areas
-Dry upland or lowland and wetland areas
-Popular tourist, scenic areas, or recreational areas
-Wildlife habitat such as. critical nesting habitat or winter feeding grounds


Why is it important to protect wetlands? - ✔️✔️-Because they are declining
-They are valuable ecosystems
-They protect wildlife
-They minimize bank and shoreline erosion
-They Improve water quality
-They Provide recreational activities
-They act as water storage during flooding

List four stages of weed development and briefly describe each. - ✔️✔️Seedling -
small, vulnerable plantlets

Vegetative - rapid growth producing stems, roots, and foliage, uptake of water and
nutrients is rapid

Seed production - energy directed toward production of seed, uptake of water and
nutrient is slow and directed towards flower, fruit, and seed structure

Maturity - little or no energy production or movement of water and nutrients

List the three plant types and briefly describe each. - ✔️✔️Annuals - grow from seed,
mature, and produce seed in one year or less

Biennials - plants with two-year life cycle

Perennials - plants that live more than two years and may live indefinitely

Monocot vs. dicot plant - ✔️✔️Monocot - only have one leaf

Dicot - have two leaves when they emerge from the seed

True or false: Grasses may be annual or perennial. - ✔️✔️True

How does a sedge differ from a grass? - ✔️✔️Sedges have triangular stems and three
rows of leaves, while grasses only have one leaf.

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