81. Fertiliser P reacts in soil to form compounds with
82. Fibrous clay is
83. In DTA (Differential Thermal Analysis), which are used as inert material?
84. Match the following columns:
Column I (OM)
Column II (N Content %)
a. Compost
1. 0.50
b. FYM
2. 0.89
c. Night soil
3. 5.50
d. Bird guano
4. 7-8
| Column I (OM) | Column II (N Content %) |
| a. Compost | 1. 0.50 |
| b. FYM | 2. 0.89 |
| c. Night soil | 3. 5.50 |
| d. Bird guano | 4. 7-8 |
85. The phosphorus in plant seeds is mainly
86. A soil can be considered as Organic soil if it contains . . . . . . . . % organic matter.
87. CEC of vermiculite is
88. Optimum dose should not be exceeded because it means
89. Charge of brucite layer is
90. Sulphur content (%) in potassium sulphate is
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