Magnesium deficiency in crops can be corrected by the application of

Magnesium deficiency in crops can be corrected by the application of dolomite. Dolomite is a type of mineral that contains both calcium and magnesium. When it is added to soil, it can increase the levels of magnesium in the soil and therefore help to correct magnesium deficiency in crops. Limestone, on the other hand, contains calcium but not magnesium, so it would not be effective in correcting magnesium deficiency. Quicklime is a form of calcium oxide that is often used to raise soil pH, but it does not contain magnesium. Urea is a nitrogen fertilizer and does not contain magnesium either, so it would also not be effective in correcting magnesium deficiency in crops.