91. Hartig nets in soil produce by
92. Resistance to pests and diseases is often provided by
93. The change of NH+4 to NO-3 is called as
94. Journal 'Plant and Soil' is published from
95. Greatest damage to fertiliser is caused by
96. Neutralizing value of Dolomite is
97. 1 meq of Calcium is how much Ca?
98. Soil water potential per unit mass is expressed as
99. What are the main forces governing the formation of Metamorphic rock?
100. PO4-3 is the principle phosphate anion, when soil pH is
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