urea fertilizer

Product Description

Urea (COCNH) Form

This form of fertilizer nitrogen usually undergoes a three-step change before it is taken up by crops. First, enzymes in the soil or plant residue convert the urea N to ammonia N. Next, the ammonia reacts with soil water to form ammonium N. And finally, through the action of soil microorganisms, the ammonium is converted to nitrate N.

Like nitrates, urea dissolves in and moves with soil water and thus can be lost through leaching if not converted to ammonia and then ammonium. The conversion to ammonia takes only 2 to 4 days when soil moisture and temperature are favorable for plant growth. Lower temperatures slow the process, but it will continue even down to freezing. Consequently, leaching losses are seldom experienced under field conditions.

When ammonia is formed from urea applied on the soil surface, some will be volatilized (escape into the air), the amount depending on a combination of soil conditions. Greatest loss can be expected when soil pH is above 7. soil temperature S high and soil moisture low. Ammonia formed from urea applied under the soil surface, on the other hand, s rapidly converted to ammonium. which will neither move with water nor be lost to the air.

Product Specification