Phosphoric acid for dry or liquid agriculture? , which is better? The following example can lead us to the answer to this question, dry or liquid agricultural phosphoric acid. Phosphoric acid is a phosphorus exoic acid that consists of an exo group and three hydroxy groups that are covalently attached to a central phosphorus atom. It acts as a solvent, human metabolite, algal metabolite and fertilizer. It is a conjugated acid, a dihydrogen phosphate and a phosphate ion. Changes in the bioavailability of P (P) due to the use of liquid and powder sources of P, nitrogen (N) and zinc (Zn) fertilizers in alkaline soils Alkaline and calcareous soils pose significant challenges to phosphorus nutrition management due to the rapid stabilization of phosphorus in slightly soluble forms that are not readily available to plants. Three powder products, mono and diamonium phosphate (MAP, DAP) and triple superphosphate (TSP), with three liquid products, liquid MAP, ammonium polyphosphate (APP) and phosphoric acid (H 3 PO 4), as sources Phosphorus were compared. For wheat grown in four alkaline soils (calcareous gray and red soils, one vertosol and one pseudosol) sampled from the Air Peninsula (South Australia), Vimra and the central Mal (Victoria) in southern Australia. Soils were labeled with 32 P and P derived from fertilizer. The residual value of fertilizers was determined after 4 months. Liquid formulation of powder products works best in gray calcareous soils and in vertosol, which is measured by wheat growth, phosphorus uptake, P pools and changeable plants, and P dff. This increase in phosphorus yield is not related to the differential acidification of bulk soils. In more calcareous soils, large proportions of added DAP, MAP, or TSP are rapidly converted to plant immutable pools (possibly by precipitation of Ca-P compounds that are not available to plant roots, whereas conversely, formulations Liquid P minimizes.) Stabilization results show that one of the most likely hypotheses to explain the difference in performance between powder and liquid forms of fertilizers was that in relatively dry conditions and in high phosphorus-fixing soils, dissolution And phosphorus release is limited to outside the powder.
This creates localized areas in the soil with high concentrations of phosphorus, which leads to precipitation of insoluble Ca-P solid phases. In the context, in cases where powder fertilizers are used as granules rather than fine powder, the difference between the two forms of fertilizer is likely to be greater. The residual amount of the liquid formulation was equal to or greater than that of the powder products. Therefore, liquid fertilizers injected into the soil may improve phosphorus nutrition in a wide range of calcareous soils in rainfed agriculture around the world. In fact, field trials have been conducted in South Australia to confirm this important point. According to the results obtained from the above, liquid fertilizers containing phosphoric acid are better absorbed by the soil, or in other words, better deliver phosphorus to the soil. Following the example given in the case of dry or liquid agricultural phosphoric acid, we will look at the commercial source of phosphoric acid production.
Phosphate rocks are a commercial source used to produce phosphoric acid, phosphate fertilizers and some other chemicals. Phosphate ores can be used directly in some applications, while to increase ore to more than 29% P 2 O 5 when used as a raw material for the production of fertilizers, phosphoric acid and many other phosphate compounds. Used, need to increase. Phosphate fertilizers are the most important end product of phosphoric acid. Phosphoric acid production is the first step in making many phosphate fertilizers.
Phosphoric acid and phosphate compounds can be used directly in the chemical industry or as a key element in the production of many other chemicals needed in detergents, animal feed, food, beverages, surface cleaning (metal cleaning, coating), Used water purifiers, dentistry, toothpaste, fire extinguishers and many more. High purity phosphate compounds are also used in the production of food and medicine. Phosphorus is used as an element and some other phosphoric chemicals derived from phosphate rocks in pesticides, matches, fireworks as well as in many military applications.