Arshine:What is Triple Super phosphate
Triple
superphosphate (TSP) was one of the first high-analysis phosphorus (P)
fertilizers that became widely used in the 20th century. Technically, it is
known as calcium dihydrogen phosphate and as monocalcium phosphate, [Ca(H₂PO₄)₂
.H₂O].
Despite its excellent history as a P source, its use has declined as other P
fertilizers have become more popular.
Production
The
concept of TSP production is relatively simple. Manufacturers make nongranular
TSP typically by reacting finely ground phosphate rock with liquid phosphoric
acid in a cone-type mixer. Granular TSP is made similarly, but the resulting
slurry is sprayed as a coating onto small particles to build granules of the
desired size. The product from both production methods then cures for several
weeks as the chemical reactions are slowly completed. The chemistry and process
of the reaction will vary somewhat depending on the properties of the phosphate
rock.
Agricultural
use
Chemical
Properties
TSP has several agronomic advantages that made it such a popular P source for
many years. It has the highest P content of dry fertilizers that don’t contain
nitrogen (N). Over 90 percent of the total P in TSP is water soluble, so it
becomes rapidly available for plant uptake. As soil moisture dissolves the
granule, the concentrated soil solution becomes acidic. TSP also contains 15
percent calcium (Ca), providing an additional plant nutrient.
A
major use of TSP is in situations where several solid fertilizers are blended
together for broadcasting on the soil surface or for application in a
concentrated band beneath the surface. It’s also desirable for fertilization of
leguminous crops, such as alfalfa or beans, where no additional N fertilization
is needed to supplement biological N fixation.
Non-agricultural
uses
Monocalcium
phosphate is an important ingredient in baking powder. The acidic monocalcium
phosphate reacts with an alkaline component to produce carbon dioxide, the
leavening for many baked products. Monocalcium phosphate is commonly added to
animal diets as an important mineral supplement of both P and Ca.
source Arshine:https://www.arshinefeed.com/
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