1. Which of the following conditions would tend to promote rapid mineralization

Question

1. Which of the following conditions would tend to promote rapid mineralization of organic matter?

a. poor drainage

b. warm, humid climate

c. cold climate

d. dry climate

e. cold and wet climate

2. Soil fungi play major roles in the processes of humus formation because they serve as decomposers of organic matter?

True

False

3. Ants are important because nest-building activity can improve

a. soil aeration

b. increase water infiltration

c. modify soil ph

d. encourage the microbial population

e. a, b, c, and d

4. Concentrations of microbial activity (hotspots) in the soil occur in the following locations except

a. the immediate vicinity of living

b. decaying bits of detritus

c. areas impacted by fungicide and herbicide

d. organic material lining earthworm burrows

e. fecal pellets of soil fauna

Explanation / Answer

1. (b) Warm and humid climate

Environmental conditions which favor soil microbiological activity will promote the mineralization. Warm temperatures, adequate soil moisture are some nessesary condtions.

2.True

Microbes such as fungi,bacteria decompose the organic material to form humus material.

3. (e) a, b, c, and d

Nest formation reduces bulk density which may increase the soil aeration and permeability.Chemical changes in the soil causes the shift of pH of soil towards neutral and also increase the nurient value of soil which increase the microbial activity.

4.(c) areas impacted by fungicide and herbicide

Effect of pesticides may make the microbes impaired and causes harm.

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