131. Which of the following small grain crops has an exceptional tolerance to law leaves of soil copper supply?
132. Which chemical is used as extractant during sulfur estimation by Chesnin & Yein method?
133. The external surface area of 1 g of colloidal clay is at least . . . . . . . . times that of 1 g of coarse sand
134. Capillary pores are
135. Which of the following method will be followed where information are unavailable for research purpose?
136. Almost 95% of Indian soils are low or medium in
137. 2 : 1 : 1 type of clay mineral contain and extra sheet of . . . . . . . . as compared to 2 : 1 type of clay minerals
138. Main objective of puddling in paddy is to
139. Which of the following is a micronutrient?
140. Which type of fertilization enhances manuring properties of Green Manures?
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