DEQ (Section 3)

The best way to prevent erosion is to remove
the minimum amount of ______ and re-establish it as soon as possible.

A critical area is ______ to stabilize with vegetation.  Whenever possible, critical areas should not be ______.

A non-critical area is an area on which vegetation can be established without ______.

Sensitive areas are those areas next to ______, ______, ______, ______ ______, or other landscape features that are vulnerable to damage by sediment.

Permanent vegetative stabilization is required when it is necessary to stabilize an area for more than ______.

Legumes furnish ______ to the soil, an important plant nutrient.

When assessing a site prior to selecting plant materials, consideration should be given to:

Consideration should be given to on-site soil conditions such as:

A 50 pound bag of 20-10-5 contains ______ pounds of phosphorus.

Topsoil should be ______ at the beginning of grading operations for later use.

When slopes are steeper than ______:______ (horizontal/vertical), structures may be more effective to control erosion than vegetation.

It is necessary to add ______ to lower acidity (increase the pH).

Soil pH should be no lower than ______ for most grasses and no lower than ______ for legumes.

The amount of lime and/or fertilizer required for good vegetative growth can be determined through ______ ______.

Three factors that contribute to soil slippage are:
a.) high ______ ______
b.) slope ______
c.) poor ______

Droughty soil can be corrected by:
a.) selecting ______ resistant plants
b.) ______ silt and clay soil or ______ matter with the droughty soil

The problem of wet soil can be handled by:
a.) selecting plants ______ to wet conditions
b.) installing artificial ______ or subsurface ______

Four methods for establishing vegetation are:
a.) ______
b.) ______
c.) ______
d.) ______

Sprigging involves planting ______ plants in the treated area.

Sod must be closely ______ together and ______ in place on steep slopes or in areas of concentrated flow.

Immediately following seeding, a mulch of ______ ______ should be applied at ______ tons/acre.

______ insulates the soil from intense heat and cold, and conserves ______.

On steep slopes or areas of concentrated flow, ______ or ______ may be required to properly secure the seeding.

The two types of maintenance required for vegetation stabilization are:
______ and ______

Areas planted in the fall should be inspected in the ______.