Missouri Certified Crop Adviser Exam Nutrient Management Questions and Correct Answers/ Latest Update / Already Graded

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Missouri Certified Crop Adviser Exam
Nutrient Management Questions and
Correct Answers/ Latest Update / Already
Graded
List the macronutrients

Ans: carbon, hydrogen, oxygen, nitrogen, phosphorus, and
potassium


List the secondary nutrients

Ans: calcium, magnesium, and sulfur


List the micronutrients

Ans: boron, chlorine, copper, iron, manganese, molybdenum,
zinc


List the macronutrients that are obtained from the air as water and
carbon dioxide

Ans: carbon, hydrogen, and oxygen


List the mobile nutrients


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Ans: nitrogen, phosphorus, potassium, and magnesium


List the immobile nutrients

Ans: calcium and sulfur


chemical uptake form of Nitrogen (N)

Ans: ammonium ion (NH4+) or nitrate ion (NO3-).


Chemical uptake form of Phosphorus (P)

Ans: phosphate ion (H2PO4-, HPO42-).


Chemical uptake form of Potassium (K)

Ans: potassium ion (K+).


Chemical uptake form of Calcium (Ca)

Ans: calcium ion (Ca2+).


Chemical uptake form of Magnesium (Mg)

Ans: magnesium ion (Mg2+).


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Chemical uptake form of Sulfur (S)

Ans: sulfate ion (SO42-).


Chemical uptake form of Boron (B)

Ans: boric acid (H3BO3) or borate ion (H2BO3-).


Chemical uptake form of Chlorine (Cl)

Ans: chloride ion (Cl-).


Chemical uptake form of Copper (Cu)

Ans: cupric ion (Cu2+).


Chemical uptake form of Iron (Fe)

Ans: ferrous ion (Fe2+) and some ferric ion (Fe3+).


Chemical uptake form of Manganese (Mn)

Ans: manganous ion (Mn2+).




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Chemical uptake form of Molybdenum (Mo)

Ans: molybdate ion (MoO42-).


Chemical uptake form of Zinc (Zn)

Ans: zinc ion (Zn2+).


Plant residue as a nutrient source

Ans: Contains the essential elements that are returned to the
soil system as the plant residue decomposes and rainfall
leaches soluble nutrients from the plant residue.


Organic matter as a nutrient source

Ans: Soil organic matter can retain cationic nutrients by cation
exchange and chelation, and can be a source of nutrients (N, P,
S) when decomposed.


Soil minerals contribution to soil nutrients

Ans: Soils contain minerals that slowly dissolve to release
nutrients to the soil solution. Some soil minerals (e.g. clays,
carbonates, hydroxides) can also retain nutrients by adsorption
on their surfaces.


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