31. In crop logging, during growing season, plant tissue is sampled every . . . . . . . . days and analysed for N, sugar, moisture and weight of the young sheath tissue
32. Terai soil comes under which soil order?
33. If one kg nutrient worth Rs. 6 produces extra crop worth Rs. 20, the Value Cost Ratio (VCR) is
34. Five stages of soil development is given by
35. Urea hydrolysis in the soil produces
36. The anion exchange capacity (AEC) increase as soil pH
37. The weathered material transported by means of water and deposited in river basins are termed as
38. Barkhan & Inselberg are formed due to action of
39. Select the wrong pair from the following given below
40. Softest mineral is
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