51. Which of the followings is a secondary mineral
52. Bone meal is well suited for
53. Which one of the following values given in terms of redox-potential of soils (mv) represents a highly reduced condition of the soil
54. The presence of VAM enhances up take of nutrients in general but particularly of
55. In which form N will be lost from soil at pH < 6.5?
56. Which rock is volcanic (extrusive) in native
57. Intracellular deposits of which element is known as plant opals
58. 'Annals of Agriculture' a book was written by
59. Which plant nutrient move from soil to the roots by root interaction, mass flow and diffusion in equal proportion
60. Carbonic Anhydrase, Superoxide dismutase enzyme activity is related with which element?
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