41. Which textural triangle is followed in india?
42. Under electron Microscope, shape of kaolinite is
43. For the first time who isolated bacteria from root nodule?
44. Indian agriculture is operating at a negative balance of plant nutrients
45. According to USDA land Capability Classification, land are classified under . . . . . . . . broad groups.
46. Mineralisation releases nutrients in soils are tied up in
47. 'Hartig Net' is seen after infection of which Mycorrhizae?
48. Seeds of pulses are inoculated with bacteria to
49. The occurrence of quartz in high amounts makes a rock
50. Chemical formula of siderite is
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