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Western Region CCA Practice Exam Questions and Answers (Latest Update 2024)
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Western Region CCA Practice Exam Questions and Answers (Latest Update 2024)
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Western Region CCA Practice ExamQuestions and Answers (Latest Update
2024)
A sodic soil has... - Correct Answer ✅an exchangable sodium
percentage greater than 15
What tests must indicate an adequate level of in order to use
sulfuric acid and sulfur to reclaim an alkali soil - Correct
Answer ✅Calcium Carbonate
Which soil components, when found at high levels, reduce the
survivability of permanent crops in California? - Correct
Answer ✅When found at high levels, B, Cl, and Na (Boron,
Chlorine, and Sodium) reduce the survivability of permanent
crops in California.
A history of excessive manure applications can create -
Correct Answer ✅A history of excessive manure applications
can create Zinc deficiency AND excess salt accumulation.
National regulatory agencies are concerned about heavy
manure applications. Their major concerns include: - Correct
Answer ✅National regulatory agencies major concerns about
heavy manure applications are excess phosphate AND salts.
A farm with poor yields was sold, and was found to have very
high phosphate and very low potassium. It is likely that the
original farmer must have: - Correct Answer ✅A farm with
poor yields, very high phosphate, and very low potassium is
,Western Region CCA Practice Exam
Questions and Answers (Latest Update
2024)
likely to have had a farmer who assumed he always needed
phosphate, assumed his ranch would not respond to
potassium, and/or not checked his farm fertility with a soil
test.
Manure or compost when applied to irrigated cropland in an
arid climate such as the San Joaquin Valley will - Correct
Answer ✅Break down rapidly over a relatively short period of
time but are still beneficial to the soil
Which of the following is a true statement regarding salt
movement in soil? - Correct Answer ✅in soil, salts move with
water.
In order for elemental sulfur to be an effective soil
amendment for the purpose of flocculation the soil needs to
contain: - Correct Answer ✅Soil needs calcium carbonate in
order for elemental sulfur to be an effective soil amendment
for the purpose of flocculation.
Sodic soils often exhibit slow water infiltration rates. Non-
sodic soils can have the same problem if... - Correct Answer
✅irrigation water is very low in total salts.
Broadcast applications of dry fertilizers are not effective
until... - Correct Answer ✅Broadcast applications of dry
, Western Region CCA Practice Exam
Questions and Answers (Latest Update
2024)
fertilizers are not effective until irrigation or rainfall dissolves
fertilizer and moves it into the root zone.
A main advantage of cover crops is: - Correct Answer ✅A
main advantage of cover crops is reduced leaching and
conserved soil fertility.
Most ammoniacal nitrogen fertilizers have a long-term
reaction in the soil that is: - Correct Answer ✅acidic
Annual crops typically exhibit a growth rate curve
characterized by: - Correct Answer ✅characterized by initial
slow growth followed by rapid growth and then slow growth.
When a plant lacks Mn, Zn, Fe, or S, the most common
symptom is... - Correct Answer ✅Chlorosis, NOT interveinal
Nitrobacter oxidizes nitrite to: - Correct Answer ✅Nitrate
Root absorption of phosphorus is slow when... - Correct
Answer ✅soil temperatures are low
How can a grower correct soil salinity - Correct Answer
✅leaching
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