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AEPS 315 Final Flashcards Complete Guide
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AEPS 315 Final Flashcards Complete Guide Quiz 4 Nutrient and Soil Management 1. Compared to conventional soils with farmyard manure application, organic soil management results in an increase in: Correct: Enzymatic activity Incorrect: phosphorus potassium soil pH Previous Pl...

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  • October 16, 2024
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AEPS 315 Final Flashcards Complete Guide

Quiz 4

Nutrient and Soil Management

1. Compared to conventional soils with farmyard manure application, organic soil management results
in an increase in:

Correct:
Enzymatic activity

Incorrect:
phosphorus
potassium
soil pH

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2. In the Mäder et al. (2002) study, soil enzymes were highest in:

Correct:
biodynamic system

Incorrect:
- conventional synthetic fertilizer system

,- organic system
- conventional farmyard manure system

3. Proteolysis goes in this order:

Correct:
Protein -> amino acids -> ammonia

4. The number of earthworms will be highest in:

Correct:
- Permanent bluegrass/clover pastures

Incorrect:
- No-till soybeans
- No-till corn
- Conventional soybean

5. Which statement is wrong with regard to organic and conventional soils?

Correct:
None of the other statements is wrong

ALL ARE CORRECT

Incorrect:
Organic soils have more weed pressure than conventional soils

Organic soils have more aggregation than conventional soils

Organic soils have more biological activity than conventional soils

6. Which statement is TRUE with regard to essential micro-nutrients?

Correct:
Micro-nutrients are mostly needed for enzymes

Incorrect:
Micro-nutrients are less important than macro-nutrients

Micro-nutrients are mostly needed in the structure of major organic compounds (e.g., sugars)

Plants can still survive without micro-nutrients

7. Which statement is wrong with regard to micro-nutrients?

Correct:
Micro-nutrient deficiencies are widespread in organic systems

,Incorrect:
Salts or chelates of micronutrients might be allowed if deficiencies are documented by visual
observation or tissue analysis

Rock dust is a good source of micro-nutrients

Copper sulfate or copper hydroxide are allowed as algicides/fungicides, but not herbicides

8. The 3 pillars of sustainability are:

Correct:
Economic

Social

Environmental

9. Cation exchange capacity is highest in:

Correct:
Soil humus

Incorrect:
Chlorite

Sand

Kaolinite

10. Among the following materials, which one would generally have the highest nitrogen concentration?

Correct:
Blood Meal

Incorrect:
Compost

Bone Meal

Alfalfa meal

Slides 5a: ORGANIC NUTRIENT MGMT

Roles of MACROnutrients

(N) Nitrogen

Amino Acids, Protein Synthesis, Nucleic Acids

, (K) Potassium

Enzyme Activation, Winter Hardiness, Water Relations, N Uptake and Protein Synthesis, Disease
Resistance, Translocation, Starch Synthesis

(Ca) Calcium

Membrane Function, Cell Regulation

(P) Phosphorous

ATP, used in early life cycle, Root Formation, Nucleic Acids

(Mg) Magnesium

Chlorophyll, Co-factor in ATP Metabolism

(S) Sulfur

Amino Acids

ROLES OF MICROnutrients

1. (Fe) Iron

Chlorophyll, Cytochromes, Enzymes

2. (Mn) Manganese

Formation o fAmino Acids, Chloroplast Membrane, Enzyme Systems

3. (Cl) Chlorine

Photosynthetic Phosphorylation, Charge Balance, Osmotic Pressure

4. (B) Boron

Synthesis of Amino Acids and Proteins, Nodule Formation

5. (Cu) Copper

Nitrate Reduction, Photosynthesis Electron Transfer

6. (Zn) Zinc

Enzymatic Activities

7. (Mo) Molybdenum

Nitrate Reductase, N Fixation

8. (Ni) Nickel

Part of Urease (needed in N fixation)

Na? Sodium?

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