CCA Crop Management Systems 3

Question 1

In integrated crop management (ICM), pest control decisions are primarily based on:

Accepted Answer

Economic thresholds and multiple pest management tactics

Answer

ICM uses economic thresholds to decide when intervention is justified, combining biological, cultural, and chemical methods.

Question 2

A soybean field with a history of sudden death syndrome (SDS) would BEST benefit from which management strategy?

Accepted Answer

Selecting SDS-tolerant varieties and improving soil drainage

Answer

SDS is driven by Fusarium virguliforme infection favored in wet, compacted soils, so varietal tolerance and drainage are the primary management tools.

Question 3

What distinguishes precision agriculture from conventional crop management?

Accepted Answer

It applies inputs at variable rates based on within-field spatial variability

Answer

Precision agriculture uses GPS, sensors, and data analytics to apply inputs only where and in amounts they are needed across variable field zones.

Question 4

Which tillage system is most likely to cause long-term degradation of soil structure on a sloping field?

Accepted Answer

Conventional moldboard plow tillage

Answer

Moldboard plowing inverts the entire soil profile, destroys aggregates, eliminates surface residue, and dramatically increases erosion risk on slopes.

Question 5

The main purpose of a living mulch system in crop production is to:

Accepted Answer

Maintain a living ground cover between crop rows to suppress weeds and reduce erosion

Answer

Living mulch keeps the soil covered with a low-growing species between crop rows, suppressing weeds and protecting soil from erosion.

(CCA) Certified Crop Advisor Practice Test

(CCA) Certified Crop Advisor Practice Test

CCA Crop Management Systems 3