61. . . . . . . . . nitrogen present is the soil air.
62. 8-bit images having PIXEL value in the range between
63. Split application of K is useful in high rainfall areas to save on
64. In soil taxonomy, Great group is defined largely on the basis of
65. Nepheline is igneous in origin which is rich in
66. Slickensides in black soil are found in
67. Granite and basalt are
68. Most impotant source of sulphur for Indian soils is
69. Magnesium is a component part of
70. . . . . . . . . refers to a condition in which a crop needs more of a given nutrient yet has shown no deficiency symptom
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