GENERAL KNOWLEDGE

Detailed explanation-1: -Of the commonly used dry fertilizers, urea contains the highest percentage of nitrogen and is rapidly replacing ammonium nitrate. When surface applied, urea is the most readily volatilized of the dry nitrogen materials. After application to the soil, urea will hydrolyze (combine with water) to form ammonium carbonate.

Detailed explanation-2: -Urea is the most important nitrogenous fertilizer in the market, with the highest Nitrogen content (about 46 percent). It is a white crystalline organic chemical compound. Urea is neutral in pH and can adapt to almost all kinds of soils.

Detailed explanation-3: -The agricultural industry widely uses urea, a white crystalline solid containing 46 percent nitrogen, as an animal feed additive and fertilizer. Here, we’ll focus on its role as a nitrogen fertilizer.

Detailed explanation-4: -However, the cost of nitrogen per lb for urea ($0.67) is actually less than the cost of nitrogen per lb for ammonium nitrate ($0.79). This is because urea has more nitrogen than ammonium nitrate relative to the overall mass.

Detailed explanation-5: -Hence, ammonia is the richest source of nitrogen on a mass percentage basis.