Sulphur Coated Urea (SCU)
SCU (sulphur coated urea) fertilizer is produced by caspsulization of urea with the elements appropriate for soil, such as sulphur and sealant, which itself consists of various elements. A base of its special formula provides the plant with the nutritious content of urea fertilizer on a slow release basis over a 40-day output period. The necessity of replacing urea fertilizer by SCU fertilizer nitrogen is one of the main nutritious elements which the plant receives through urea fertilizer.
Urea 46%This type of fertilizer usually is available to the public in a white, crystalline, organic form. It is a highly concentrated nitrogenous fertilizer and fairly hygroscopic. This also means that this fertilizer can be quite difficult to apply. Urea is also produced in granular or pellet forms and is coated with a non-hygroscopic inert material.
It is highly soluble in water and therefore, subject to rapid leaching. It is, however, quick acting and produces quick results. When applied to the soil, its nitrogen is rapidly changed into ammonia. Similar to ammonium nitrate, urea supplies nothing but nitrogen and the application of urea as fertilizer can be done at sowing time or as a top-dressing, but should not be allowed to come into contact with the seed.
Ammonuim NitrateThis fertilizer type also comes in white crystalline salts. Ammonium nitrate salts contains 33% to 35% nitrogen, of which half is nitrate nitrogen and the other half is the ammonium form. As part of the ammonium form, this type of fertilizer cannot be easily leached from the soil. This fertilizer is quick acting but highly hygroscopic, thus making it unfit for storage.
Origin: Russia and Ukraine