Exam 16: Practical Nutrient Management

Soil test interpretations have been developed so that for most fields testing "high" in a nutrient,addition of that nutrient will not increase yield enough to more than pay for the cost of applying the nutrient.

If soil test results for P are available,the optimum amount of P fertilizer to apply to a crop can be best recommended by __________.

When banding fertilizer,the material should be placed about 1 or 2 cm below the seed being planted.

A grass cover crop grown on cropland over the winter season in a humid temperate region can be expected to ______

Buffer strips are usually a last-resort mechanism of pollution control because of their expense and unfavorable side-effects.

Land application of treated sewage sludge is an effective means of recycling nutrients back to the soil from which they were originally taken.

Fertilization to supply the nutrient element nitrogen is often accomplished by which type of application?

In recent years,a soil test for nitrogen has been developed and widely used in humid regions in predicting how much nitrogen will need to be applied to supplement natural mineralization in the soil.This test is called the _______.

Routine soil testing on a regular basis allows landowners to monitor most changes in soil quality.

Fertilization to supply the nutrient element sulfur is often accomplished by which type of application?

Concentrated animal production as is practiced in modern industrial agriculture usually results in ______.

Broadcast application usually requires less fertilizer to achieve a given level of plant response than does banding.

Many years of research have confirmed that the quadratic (parabolic curve)model is the best method of making fertilizer recommendations based on response curves,especially if environmental quality is a high priority.

Within the technical capabilities of the particular lab,most soil test results can be best interpreted as indicating the _______________________.

Fertilization to supply the nutrient element potassium is often accomplished by which type of application?

The primary means to avoid non-point source nitrogen and phosphorus pollution in agricultural watersheds is to avoid applications that bring the available supply of these nutrients in soils to amounts higher that can be used by crop plants.

Buffer strips principally function in nutrient management to _______.