11. Which of the following elements is not major nutrient element?
12. Fertilizer control order issued in
13. Actinomycetes are mainly
14. Match the following columns:
Column I (Methods of measuring soil moisture)
Column II (Useful range kpa)
a. Tensiometer
1. 0 to < -1500
b. Resistance blocks
2. 50 to < -10000
c. Neutron scattering
3. -100 to< -1500
d. Pressure membrane apparatus
4. 0 to -85
| Column I (Methods of measuring soil moisture) | Column II (Useful range kpa) |
| a. Tensiometer | 1. 0 to < -1500 |
| b. Resistance blocks | 2. 50 to < -10000 |
| c. Neutron scattering | 3. -100 to< -1500 |
| d. Pressure membrane apparatus | 4. 0 to -85 |
15. How much farmyard manure is required for obtaining 60 kg nitrogen for a crop?
16. Lignins mainly decomposed by
17. The concept of pH is suggested by the scientist
18. The space between fertiliser stacks and walls for should be about
19. Match the following columns:
Column I (Fertilisers)
Column II (N Content %)
a. CAN
1. 82
b. Anhydrous ammonia
2. 25
c. Urea
3. 33
d. Ammonium nitrate
4. 46
| Column I (Fertilisers) | Column II (N Content %) |
| a. CAN | 1. 82 |
| b. Anhydrous ammonia | 2. 25 |
| c. Urea | 3. 33 |
| d. Ammonium nitrate | 4. 46 |
20. Match the following columns:
Column I (Bacteria)
Column II (Functions)
a. Nitrobacter
1. Fixation of atmospheric nitrogen
b. Ammonifying bacteria
2. Formation of NH4+ nitrogen
c. Denitrifying bacteria
3. Formation of NO3-
d. Rhizobium sp.
4. Formation of N2
| Column I (Bacteria) | Column II (Functions) |
| a. Nitrobacter | 1. Fixation of atmospheric nitrogen |
| b. Ammonifying bacteria | 2. Formation of NH4+ nitrogen |
| c. Denitrifying bacteria | 3. Formation of NO3- |
| d. Rhizobium sp. | 4. Formation of N2 |
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