81. Match the following columns:
Column I (Available nutrients)
Column II (Extractant)
a. Boron
1. 0.15% Cacl2 Solution
b. Nitrogen
2. Hot water
c. Sulpher
3. Alkaline KMNO4
| Column I (Available nutrients) | Column II (Extractant) |
| a. Boron | 1. 0.15% Cacl2 Solution |
| b. Nitrogen | 2. Hot water |
| c. Sulpher | 3. Alkaline KMNO4 |
82. Which of the following is the seed gall nematode?
83. MLO first discovered by
84. Blood meal contains
85. Most widely used fungicide for smut fungi is
86. IFFCO was formed in the year of
87. Urea has chemical composition
88. The ascus is a sexual fruit of ascomycetes having a globose shape but no ostile (opening) is known as
89. The phosphorus content as P is plough layer of one hectare of soil containing 0.1% P2O5 is
90. Most of the plants obtain nitrogen from soil in the form of
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