81. During Urea hydrolysis pH of the soil system attains a value
82. Nutrient movement slows down in a dry soil due to
83. Harvest index is 100% for
84. Lithosol, Regosol come under
85. Total Mn of a soil sample after digestion with HF (not upto dryness) can be measured through
86. The Standard sea-level pressure at 45° latitude at a temperature of 15°C is
87. Red soils to India are poor in
88. One number of fertiliser sale points in India are
89. Downey mildew of pearlmillet may be suppressed by increased soil levels of
90. Town compost contains merely
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