Page 40 - Agronomy-Soil.Sci-Horticulture objective AFO

Q. A simple technique has been developed in India by using the
following organism as biofertilizers: (IBPS AFO Mains AFO 2013)

a. Azotobacter and Nostoc
b. Azolla and Rhizobium

c. Azolla and Azotobacter
d. Azotobacter and Rhizobium

e. None of these

Azotobacter and Rhizobium

Q. Which one of the following is an explosive fertilizer? (IBPS
AFO Mains AFO 2013)

1. Ammonium nitrate

2. Urea

3. Sodium nitrate

4. Both B & C

5. None of these

a. Ammonium nitrate

Q. Volatilization of ammonia in the soil increases with the
increase in (IBPS AFO Mains AFO 2013)

a. CEC of soil
b. The clay content of soil

c. NaCO3 content of the soil
d. CaCO3 content of the soil
e. Moisture content of the soil

e. The moisture content of the soil

Q. Which of the following compounds can make the colour of the
soil white: (IBPS AFO Mains AFO 2013)

1. Nitrogen

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