121.
In 1843, Agricultural Experiment Station at Rothamsted, England was started by

122.
Which of the following nutrients is available at neutral pH value?

123.
One atmosphere means

124.
ATP consumption (photosynthesis) & production (respiration) are which kind of reaction respectively?

125.
Biogas contain . . . . . . . . % of N.

126.
C-axis spacing of illite is

127.
. . . . . . . . toxicity is probably the important growth limiting factor in acid soils, particularly when pH < 5.0 to 5.5

128.
Passive factor of soil formation includes

129.
Indicator plant for monitoring K-deficiency is

130.
Which one of the following occupies the highest volume percent in a fine sandy loam surface soil in good condition for plant growth?

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