Relative efficiency of ammonium polyphosphate and orthophosphates for wheat and their residual effects on succeeding cowpea fodder

Venugopalan, M. V.; Prasad, Rajendra

doi:10.1007/bf01055435

Cited by 17 publications

(11 citation statements)

References 8 publications

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“…However, higher plant P uptake related to polyphosphate applications was found by Blanchar and Hossner (1969). Higher yields have been reported in several crops, e.g., wheat (Venugopalan and Prasad, 1989), rice (Rao et al, 1991), chickpea (Billore and Bargale, 1991), soybean (Jain and Kushwaha, 1993), and gram (Ghosh et al, 1996), but without further explanation of the mechanisms by which polyphosphate sources influenced soil P availability for an increased P uptake and higher yields.…”

Section: Introductionmentioning

confidence: 94%

Hydrolysis rates of inorganic polyphosphates in aqueous solution as well as in soils and effects on P availability

Torres‐Dorante

Claassen

Steingrobe

et al. 2005

Z. Pflanzenernähr. Bodenk.

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PNSS P04/94PSummaryÐZusammenfassung Applications of polyphosphate-based fertilizers have been reported to have a positive impact on crop yields as compared to orthophosphate sources. Since plants take up P mainly as orthophosphate, hydrolysis rates of polyphosphates into orthophosphates will determine their fertilizer ability. Laboratory and soil incubation experiments were performed to evaluate hydrolysis rates of pyrophosphate (PP), tripolyphosphate (TP), and trimetaphosphate (TMP) in water as well as in two soils having different P-fixing capacities. P availability was characterized by measuring the orthophosphate (ortho-P) and polyphosphate (poly-P) concentration in soil solution as well as the calcium-acetate-lactate (CAL)extractable amounts of both forms. In water, PP was completely hydrolyzed within 15 d, whereas TMP was hydrolyzed only to about 30% after 90 d. In the two soils, polyphosphates hydrolyzed during the incubation period increasing ortho-P concentration in soil solution as well as in CAL extract. At the end of the incubation, no significant differences in ortho-P concentration in soil solution and CAL extract were found in the sandy soil, whereas in the silty-loam soil, polyphosphate applications resulted in higher soil-solution ortho-P concentration. Although polyphosphate hydrolysis is mainly affected by the soil-specific enzymatic activity, it seems that polyphosphates and/or hydrolysis products are preferentially adsorbed/precipitated compared to ortho-P in the silty loam, thereby influencing the P availability from polyphosphate sources.

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Section: Introductionmentioning

confidence: 94%

Hydrolysis rates of inorganic polyphosphates in aqueous solution as well as in soils and effects on P availability

Torres‐Dorante

Claassen

Steingrobe

et al. 2005

Z. Pflanzenernähr. Bodenk.

View full text Add to dashboard Cite

show abstract

“…In the silty-loam soil, the CAL-extractable ortho-P was quite similar for all P sources, which is in accordance with results from Subbarao and Roscoe (1975), who did not found significant differences in available soil P after application of ortho-P and poly-P compounds in a slightly acid soil. Dick and Tabatabai (1987a) concluded after an evaluation of one cyclic poly-P and four linear poly-P compounds that none of these products was superior to an ortho-P-containing fertilizer in enhancing soil extractable P. In contrast, Venugopalan and Prasad (1989) recorded after ammonium poly-P applications higher soil ortho-P concentrations compared to a diammonium phosphate treatment in a sandy soil.…”

Section: Ortho-p and Poly-p Concentrations In Soil Solution And In Camentioning

confidence: 99%

Fertilizer‐use efficiency of different inorganic polyphosphate sources: effects on soil P availability and plant P acquisition during early growth of corn

Torres‐Dorante

Claassen

Steingrobe

et al. 2006

Z. Pflanzenernähr. Bodenk.

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Polyphosphate-based fertilizers are worldwide in use, and their effect on crop yield is often reported to be similar to orthophosphate products, although some studies showed higher yields with polyphosphate applications. However, information on how these fertilizers may influence plant P acquisition is very limited. A pot experiment was carried out under controlled conditions with corn (Zea mays L.) growing on a sandy soil (pH 4.9) and a silty-loam soil (pH 6.9) differing in P-sorption properties. The objective was to evaluate phosphorus fertilizer-use efficiency (PFUE) of several polyphosphate (poly-P) compounds (pyrophosphate [PP], tripolyphosphate [TP], and trimetaphosphate [TMP]) using orthophosphate (OP) as a reference. Focus was put on evaluating plant parameters involved in plant P acquisition, i.e., root length and P uptake per unit of root length. Furthermore, soil P availability was characterized by measuring ortho-P and poly-P concentrations in soil solution as well as in CAL (calcium-acetate-lactate) extracts. The P availability was differentially influenced by the different P sources and the different soils. In the silty-loam soil, the application of poly-P resulted in higher ortho-P concentrations in soil solution. In the same soil, CAL-extractable ortho-P was similar for all P sources, whereas in the sandy soil, this parameter was higher after OP application. In the silty-loam soil, poly-P concentrations were very low in soil solution or in CAL extracts, whereas in the sandy soil, poly-P concentrations were significantly higher. Phosphorus fertilizer-use efficiency was significantly higher for poly-P treatments in the silty-loam soil and were related to a higher root length since no differences in the P uptake per unit of root length among poly-P and OP treatments were found. However, in the sandy soil, no differences in PFUE between OP and poly-P treatments were observed. Therefore, PFUE of poly-P compounds could be explained by better root growth, thereby improving plant P acquisition.

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“…The polymer dispersity index (PDI) value of APP1 was higher than 1.0, indicating that it can release phosphorus more slowly with hydrolysis reaction in soil . Previous studies showed that the wider the distribution of the degree of polymerization of water-soluble APP, the higher the utilization rate of phosphorus for crops . Thus, APP1 can be used in combination with MAP to provide fast- (fast-P) and slow- (slow-P) available phosphorus for crops.…”

Section: Methodsmentioning

confidence: 99%

“…In Figure a, the ion chromatographic peaks from P1 to P8 successively represented phosphate ions in different forms of phosphorus polymerization from PO 4 3– to P 8 O 25 . − Figure b points the specific composition of different phosphorus species which can act as fast phosphorus and slow phosphorus in the fertilizer application process to improve phosphorus utilization.…”

Section: Methodsmentioning

confidence: 99%

“…Hill et al concluded that the P mobility of monoammonium phosphate (MAP) in the soil column was lower than APP . The research results of Venugopalan and Prasad showed that the wider the distribution of the degree of polymerization of water-soluble APP, the higher the utilization rate of phosphorus in crops . Xie et al established a method for the determination of water-soluble APP with different degrees of polymerization distribution .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Solid–Liquid Phase Equilibrium of Ammonium Dihydrogen Phosphate and Agricultural Grade Ammonium Polyphosphate (Degree of Polymerization Ranging from 1 to 8) for Mixed Irrigation Strategy

Zhou

et al. 2022

ACS Omega

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Water-soluble ammonium polyphosphate (APP) has the advantages of good solubility and slow-release characteristics and has the potential to be used in combination with monoammonium phosphate (MAP) as a high phosphorus content slow-release fertilizer to improve the utilization rate of phosphorus during irrigation. Herein, the effects of the APP1 concentration and temperature (278.2−313.2 K) on the solubility of MAP, solution density, and pH value in the ternary equilibrium system (APP1− MAP−water) were measured. The simplified Apelblat model, two empirical polynomials, and rational two-dimensional functions can describe the experimental solubility data, solution density, and pH value well, respectively, with reliable modeling parameters (R 2 > 0.99). In the OptiMax1001 reactor, the focused beam reflectance measurement (FBRM), the particle-view measurement (PVM), and the ReactIR 15 probes were used to observe and reverse verify that they can be synergistically codissolved to achieve economic efficiency. Basic thermodynamic data and models can guide their collaborative application in irrigation to improve the phosphorus utilization rate.

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Relative efficiency of ammonium polyphosphate and orthophosphates for wheat and their residual effects on succeeding cowpea fodder

Cited by 17 publications

References 8 publications

Hydrolysis rates of inorganic polyphosphates in aqueous solution as well as in soils and effects on P availability

Hydrolysis rates of inorganic polyphosphates in aqueous solution as well as in soils and effects on P availability

Fertilizer‐use efficiency of different inorganic polyphosphate sources: effects on soil P availability and plant P acquisition during early growth of corn

Solid–Liquid Phase Equilibrium of Ammonium Dihydrogen Phosphate and Agricultural Grade Ammonium Polyphosphate (Degree of Polymerization Ranging from 1 to 8) for Mixed Irrigation Strategy

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