Fertilizers common to crop production in Indiana usually contain nitrogen in one or more of the following forms: nitrate, ammonia, ammonium or urea. Each form has specific properties that determine ...
Urine contains water, urea and salts. Urea is produced in the liver when excess amino acids are broken down. Urea is the main waste product removed in the urine, as it is not reabsorbed in the kidney.
Formaldehyde is an essential ingredient in the production of urea fertilizer, but an Environmental Protection Agency occupational exposure value ruling on the substance, could threaten its use in ...