in agroecosystems. Despite several decades of
research, it is hardly possible to enhance the use efficiency
with fewer percentages from 30% to 35% through coating
of widely used nitrogenous fertilizer (urea) with neem,
tar, starch etc [1]. In addition to the organic substances,
inorganic substrates such as zeolite, montmorillonite and
halloysite minerals have also been introduced to regulate
the release of N from conventional urea. These minerals
are quite useful but their extraction and purification is
time consuming and a costly affair [2]. This necessitated
searching for an alternate substrate to regulate the release
of N from urea.