Agriculture Reference
In-Depth Information
Table 2.3 (continued)
Nano-content
Claim
a
Patent title
Ref
hydroxyapatite phosphate
nanoparticles, allowing for
the slow release of the mac-
ronutrient to the soil
Composition and method for
sustained release of agricul-
tural macronutrients
Hydroxyapatite
nanoparticles (Rods with
20-40 nm diameter) have a
nitrogen-containing macro-
nutrient adsorbed on their
surface, which will slowly
release after application to
aqueous and terrestrial envi-
ronments. No claims on
efficacy
Kottegoda
et al. (
2013
)
Humic Acid
Production process for
blended high concentration
sustained-release fertilizer
Cross-listed to Category
1 urea
Zhang and
Yao (
2005
)
Kaolin
Compound fertilizer specific
for peanut and preparation
method thereof
Traditional fertilizer
containing nano-kaolin and
ground into a nanopowder
(no size information
provided)
Yang
et al. (
2012
)
Production process for
mixing polymer of nano-
subnano grade marsh dregs-
gangue compound
Composite nanoparticles
(50-200 nm) of kaolin, fer-
mentation residue, Al
2
O
3
,
and SiO
2
are prepared by
acid digestion of the mix-
tures. The particles can be
used as a water-retaining
additive or as a controlled-
release coating. Cross-listed
in Category 2 Si and Cate-
gory 2 Al
Zhang et al.
(
2005c
)
Layered double
hydroxides
Fertilizer, soil treatment
agent, soil treatment
method, and soil-less
medium
Layered nanomaterials
loaded with nitrate can be
used as a controlled-release
fertilizer
Gillman and
Noble (
2001
)
Compositions for sustained
release of agricultural mac-
ronutrients and process
thereof
Cross-listed to Category
3 hydroxyapatite
Kottegoda
et al. (
2011a
)
Metal
nanoparticles
Plant nutrient-coated
nanoparticles and methods
for their preparation and use
Metal nanoparticles (e.g.,
Ag) are coated with nutri-
ents (e.g., B), facilitating
transport and in some cases
treating a nutrient deficiency
Nilanjan
(
2013
)
(continued)
