scholarly journals Changes in Phosphorus Fractions on an Acidic Soil Induced by Phosphorus Fertilizer, Organic Matter and Lime

2001 ◽  
Vol 3 (2) ◽  
Author(s):  
A Hartono ◽  
P.L.G. Vlek ◽  
A Moawad ◽  
A Rachim
Keyword(s):  
Cow Manure ◽  
Organic P ◽  
Incubation Experiment ◽  
Phosphorus Fertilizer ◽  
Phosphorus Fraction ◽  
Inorganic P ◽  
Exchangeable Aluminum ◽  
P Application ◽  
P Immobilization ◽  
Moderately Resistant

One month of incubation experiment was implemented to evaluate the changes of phosphorus fraction in inorganic P (Pi) and organic P (Po) induced by phosphorus fertilizer (KH2P04),cow manure ( manure) and CaC03 (lime). A 0.5 kg oven-dried weight of arable layers of Latosol from Darmaga, Bogor was used in this study. The rates of manure were 0, 12.5 and 25 ffha, lime were 0, 1, 3 times the CaC03 equivalent required to neutralize exchangeable aluminum amounting to 0, 3.01, 9.03 t/ha respectively and the rates of phosphorus fertilizer in KH2P04 were 0, 40 and 80 kg Plha. All treatments increased resin-Pi (biologically available P). Application of phosphorus fertilizer also increased NaHC03-Pi which is also included as biologically available PI whi!e manure and lime only tended to increase this fraction. Phosphorus fertilizer and manure application were able to enhance NaOH-Pi (moderately resistant P related to AI-P and Fe-P ) but lime did not affect it.Phosphorus fertilizer, manure and lime increased HCI-Pi (moderately resistant P related to Ca-P).The changes of NaHC03-Pi to resin-Pi and P immobilization by microorganism, which was indicated by the increase of NaHCOrPo (readily mineralizable), can be attributed to the decrease of NaHC03- Pi. The increase of NaOH-Pi by phosphorus fertilizer and manure indicated that the complexation of P fixation sites by PO6 and organic acids likely had occurred.

scholarly journals Changes in Phosphorus Fractions on an Acidic Soil Induced by Phosphorus Fertilizer, Organic Matter and Lime

2001 ◽  
Vol 3 (2) ◽  
pp. 1-7
Author(s):  
A Hartono ◽  
P.L.G. Vlek ◽  
A Moawad ◽  
A Rachim
Keyword(s):  
Cow Manure ◽  
Organic P ◽  
Incubation Experiment ◽  
Phosphorus Fertilizer ◽  
Phosphorus Fraction ◽  
Inorganic P ◽  
Exchangeable Aluminum ◽  
P Application ◽  
P Immobilization ◽  
Moderately Resistant

One month of incubation experiment was implemented to evaluate the changes of phosphorus fraction in inorganic P (Pi) and organic P (Po) induced by phosphorus fertilizer (KH2P04),cow manure ( manure) and CaC03 (lime). A 0.5 kg oven-dried weight of arable layers of Latosol from Darmaga, Bogor was used in this study. The rates of manure were 0, 12.5 and 25 ffha, lime were 0, 1, 3 times the CaC03 equivalent required to neutralize exchangeable aluminum amounting to 0, 3.01, 9.03 t/ha respectively and the rates of phosphorus fertilizer in KH2P04 were 0, 40 and 80 kg Plha. All treatments increased resin-Pi (biologically available P). Application of phosphorus fertilizer also increased NaHC03-Pi which is also included as biologically available PI whi!e manure and lime only tended to increase this fraction. Phosphorus fertilizer and manure application were able to enhance NaOH-Pi (moderately resistant P related to AI-P and Fe-P ) but lime did not affect it.Phosphorus fertilizer, manure and lime increased HCI-Pi (moderately resistant P related to Ca-P).The changes of NaHC03-Pi to resin-Pi and P immobilization by microorganism, which was indicated by the increase of NaHCOrPo (readily mineralizable), can be attributed to the decrease of NaHC03- Pi. The increase of NaOH-Pi by phosphorus fertilizer and manure indicated that the complexation of P fixation sites by PO6 and organic acids likely had occurred.

Phosphorus forms and related soil chemistry of Podzolic soils on northern Vancouver Island. I. A comparison of two forest types

2000 ◽  
Vol 30 (11) ◽  
pp. 1714-1725 ◽  
Author(s):  
Barbara J Cade-Menun ◽  
Shannon M Berch ◽  
Caroline M Preston ◽  
L M Lavkulich
Keyword(s):  
Vancouver Island ◽  
Organic P ◽  
Poor Growth ◽  
Inorganic P ◽  
Soil P ◽  
Podzolic Soils ◽  
Phosphorus Forms ◽  
P Immobilization ◽  
Low Levels ◽  
Soil Colloids

When cedar-hemlock (CH) and hemlock - amabalis fir (HA) forests of northern Vancouver Island are clearcut and replanted, growth of replanted trees is often poor on CH clearcuts but not adjacent HA clearcuts. This poor growth can be overcome with nitrogen (N) and phosphorus (P) fertilization, which suggests differences in nutrient cycling between CH and HA forests. The objective of this study was to investigate soil P in mature, uncut stands of CH and HA forests. The results suggest that there are no inherent differences in soil P concentration between the CH and HA forests. The diversity of P forms as revealed by 31P-NMR spectroscopy was typical of cool, moist acidic forests with high P immobilization. Diester phosphates were found throughout the soil profile, albeit at very low levels in the mineral horizons. Phosphorus forms and cycling were vertically stratified down the profile. Most of the P in the LF horizon was in organic forms typical of litterfall. In the more humified H horizon the P forms were more typical of soil organisms. The high C/N and C/P ratios in the LF and H horizons at the CH site are consistent with microbial immobilization. In the upper Bhf horizon, inorganic P was predominantly nonoccluded. Organic P was present, mainly as orthophosphate monoesters, which were probably adsorbed on soil colloids. In the lower Bhf horizon, most P was occluded in amorphous sesquioxides, with low levels of organic P, mainly as orthophosphate monoesters.

scholarly journals Effect of Two Different Sugarcane Cultivars on Rhizosphere Bacterial Communities of Sugarcane and Soybean Upon Intercropping

2021 ◽  
Vol 11 ◽  
Author(s):  
Yue Liu ◽  
Huichun Yang ◽  
Qi Liu ◽  
Xiaowen Zhao ◽  
Sasa Xie ◽  
...  
Keyword(s):  
Bacterial Communities ◽  
P Uptake ◽  
Organic P ◽  
Inorganic P ◽  
Sugarcane Varieties ◽  
P Mineralization ◽  
Rhizosphere Environment ◽  
Uptake And Transport ◽  
Rhizosphere Bacterial Communities ◽  
Sugarcane Industry

Intercropping of soybean and sugarcane is an important strategy to promote sustainable development of the sugarcane industry. In fact, our understanding of the interaction between the rhizosphere and bacterial communities in the intercropping system is still evolving; particularly, the influence of different sugarcane varieties on rhizosphere bacterial communities in the intercropping process with soybean, still needs further research. Here, we evaluated the response of sugarcane varieties ZZ1 and ZZ9 to the root bacterial community during intercropping with soybean. We found that when ZZ9 was intercropped with soybean, the bacterial diversity increased significantly as compared to that when ZZ1 was used. ZZ9 played a major role in changing the bacterial environment of the root system by affecting the diversity of rhizosphere bacteria, forming a rhizosphere environment more conducive to the growth of sugarcane. In addition, our study found that ZZ1 and ZZ9 had differed significantly in their utilization of nutrients. For example, nutrients were affected by different functional genes in processes such as denitrification, P-uptake and transport, inorganic P-solubilization, and organic P-mineralization. These results are significant in terms of providing guidance to the sugarcane industry, particularly for the intercropping of sugarcane and soybean in Guangxi, China.

Fate of applied phosphorus in an effluent-irrigated Pinus radiata plantation

Soil Research ◽  
1999 ◽  
Vol 37 (6) ◽  
pp. 1095 ◽  
Author(s):  
R. A. Falkiner ◽  
P. J. Polglase
Keyword(s):  
Pinus Radiata ◽  
Sorption Isotherms ◽  
Average Concentration ◽  
Organic P ◽  
Retention Capacity ◽  
Inorganic P ◽  
Eastern Australia ◽  
Soil Irrigation ◽  
And Migration ◽  
Total P

We examined the fate of applied phosphorus (P) in a young Pinus radiata plantation in south-eastern Australia, spray-irrigated with secondary-treated municipal effluent. Measurements included changes (before irrigation, and after 5 years) in total P, total organic P, total inorganic P, labile P, and sorption and desorption characteristics. During the first 5 years a total of 363 kg/ha of P was applied at an average concentration of 5.4 mg/L. Irrigation changed the forms and distribution of P throughout the profile (0–1 m). Increases in labile inorganic P (membrane-exchangeable, bicarbonate-extractable, and in soil solution) were confined mostly to the 0–0.5 m horizon, and wholly within the 0–0.7 m horizon. In addition, large amounts of organic P (204 kg/ha) were mineralised within the surface 0.7 m, due to stimulation of decomposer activity by increased soil water. Mineralisation, therefore, provided a significant and additional input of inorganic P to soil. Irrigation and P additions changed both the placement and curvature of soil sorption isotherms. Retention capacity (0–0.5 m), calculated from P sorption isotherms, decreased by 180 kg/ha. Desorbable P, determined by sequential extraction with dilute acid, increased by 184 kg/ha. Thus, these 2 independent methods of measuring the changes in exchangeable P gave the same result. Of the total inorganic P added to the soil (in effluent and mineralised), 25% remained in the exchangeable form; the rest was retained unavailable for short-term exchange and migration through soil. After 5 years, fluxes (kg/ha) of P in the 0–0.7 m horizon were: input in effluent less storage in vegetation (323), change in total organic P (–204), change in total inorganic P (517), net change in total P (313). Thus, 97% of the net amount of P added in effluent was recovered in the surface 0.7 m. Results have implications for the way in which P retention capacity is calculated under effluent irrigation.

Do methanotrophs drive phosphorus mineralization in soil ecosystem?

2020 ◽  
Author(s):  
Santosh Ranjan Mohanty ◽  
Adarsh Kumar ◽  
Rakesh Parmar ◽  
Garima Dubey ◽  
Ashok Kumar Patra ◽  
...  
Keyword(s):  
Consumption Rate ◽  
Organic P ◽  
Soil Ecosystem ◽  
Inorganic P ◽  
Sodium Phytate ◽  
Feeding Cycle ◽  
Consumption Rates ◽  
Phosphorus Mineralization ◽  
Absolute Control ◽  
P Sources

Experiments were carried out to elucidate linkage between methane consumption and mineralization of P from different phosphorous sources. The treatments were no CH4 no P amendment absolute control, with CH4 no P amendment control, with CH4 + inorganic P as Ca3(PO4)2 and with CH4 + organic P (sodium phytate). P sources were added at 25 µg P g-1 soil. Soils were incubated to undergo three repeated CH4 feeding cycle referred as feeding cycle I, feeding cycle II, and feeding cycle III. CH4 consumption rate k (µg CH4 consumed g-1 soil d-1) was 0.297 ± 0.028 in no P amendment control, 0.457±0.016 in Ca3(PO4)2, and 0.627 ± 0.013 in sodium phytate. Rate k was stimulated by 2 to 6 times over CH4 feeding cycles and followed the trend of sodium phytate > Ca3(PO4)2 > no P amendment control. CH4 consumption stimulated P solubilization from Ca3(PO4)2 by a factor of 2.86. Acid phosphatase (µg paranitrophenol released g-1 soil h-1) was higher in sodium phytate than no P amendment control. Abundance of 16S rRNA and pmoA genes increased with CH4 consumption rates. The study suggested that CH4 consumption drive mineralization of unavailable inorganic and organic P sources in the soil ecosystem.

Dynamics of phosphorus fractions in soils treated with dairy manure

Soil Research ◽  
2020 ◽  
Vol 58 (3) ◽  
pp. 289
Author(s):  
L. B. Braos ◽  
A. C. T. Bettiol ◽  
L. G. Di Santo ◽  
M. E. Ferreira ◽  
M. C. P. Cruz
Keyword(s):  
P Uptake ◽  
Dairy Manure ◽  
P Availability ◽  
Organic P ◽  
Triple Superphosphate ◽  
P Fractions ◽  
Inorganic P ◽  
Soil P ◽  
Plant P Uptake ◽  
Inorganic P Fractions

The evaluation of phosphorus (P) transformations in soil after application of manure or mineral P can improve soil management and optimise P use by plants. The objectives of the present study were to assess organic and inorganic P forms in two soils treated with dairy manure and triple superphosphate and to establish relationships between soil P fraction levels and P availability. Soil organic and inorganic P fractions were quantified using a pot experiment with two soils, a typical Hapludox and an arenic Hapludult, with three types of fertiliser treatments applied (no fertiliser application, application of dairy manure, and application of triple superphosphate, by adding 100 mg P dm–3 in the form of fertiliser in the two latter treatments) and four incubation times (15, 45, 90, and 180 days). Inorganic P was fractionated into aluminium-bound, iron-bound, occluded, and calcium-bound P. Organic P was extracted sequentially using sodium bicarbonate, hydrochloric acid, microbial biomass, sodium hydroxide, and residual organic P. After incubation, maize plants were cropped to quantify dry matter yield and absorbed P. Application of dairy manure resulted in a significant increase in most of the organic P fractions, and application of triple superphosphate led to a significant increase in inorganic P fractions. Both fertilisers raised labile organic P fractions in the two soils. The major sinks of P in Hapludox were occluded and fulvic acid-associated P. In contrast, the major sink of P in Hapludult was iron-bound P. The available P levels were stable after application of dairy manure, and decreased with time when fertilised with triple superphosphate. In the Hapludox, the organic P fractions had a significant positive correlation with P uptake by plants. The results suggest that organic P mineralisation plays a more significant role in plant P uptake in the Hapludox soil and inorganic P forms are the main contributors to plant P uptake in the Hapludult soil.

Phosphorus cycling in wheat-pasture rotations. III. Organic phosphorus turnover and phosphorus cycling

Soil Research ◽  
1988 ◽  
Vol 26 (2) ◽  
pp. 343 ◽  
Author(s):  
MJ Mclaughlin ◽  
AM Alston ◽  
JK Martin
Keyword(s):  
Organic Phosphorus ◽  
Soil Surface ◽  
P Uptake ◽  
Phosphorus Cycling ◽  
Plant Residue ◽  
Organic P ◽  
Inorganic P ◽  
Soil P ◽  
Wheat Pasture ◽  
P Cycle

The incorporation of 32P and 33P from 33P-labelled fertilizer and 33P-labelled pasture residues into organic and inorganic fractions of soil P was studied in a solonized brown soil (Calcixerollic xerochrept) cropped to wheat (Triticum aestivum). Most of the plant residue 33P was present as inorganic P at the time it was added to the soil, but only 7 days later almost 40% had been incorporated into organic P fractions of the soil. As the fertilizer was banded near the soil surface at sowing, little of the 32P from the 32P-labelled fertilizer was incorporated into organic forms, even after 95 days. From a knowledge of the P uptake by the plants and microorganisms, an integrated P cycle for this soil under wheat-pasture rotations was developed. We propose that fertilization of the pasture phase of the rotation stimulates the build-up of residual inorganic and organic P, while fertilization of the wheat phase predominantly stimulates the accumulation of inorganic forms of P in the soil.

scholarly journals EFFECT OF LABILE INORGANIC PHOSPHATE STATUS AND ORGANIC CARBON ADDITIONS ON THE MICROBIAL UPTAKE OF PHOSPHORUS IN SOILS

1981 ◽  
Vol 61 (2) ◽  
pp. 373-385 ◽  
Author(s):  
B. S. CHAUHAN ◽  
J. W. B. STEWART ◽  
E. A. PAUL
Keyword(s):  
Organic Carbon ◽  
Inorganic Phosphate ◽  
P Uptake ◽  
Available P ◽  
Organic P ◽  
Incubation Experiment ◽  
P Values ◽  
Microbial P ◽  
C:P Ratios ◽  
Carbon Additions

The effect of labile inorganic phosphate (Pi) status of the soil on the decomposition of added cellulose and on the immobilization, mineralization, and redistribution of native and added P in soils was studied in a greenhouse incubation experiment. Cellulose was added at 765 μg C∙g−1 soil with and without P (9 μg∙g−1 soil) every 30 days under adequate N, H2O, and constant tempreature to two soils of different available P status. Lack of P eventually slowed down decomposition of added C, but this effect was partially compensated for by increased mineralization of organic P (Po) forms. Added P was redistributed to both P, (58–69%) and Po (42–31%) forms; higher amounts of Po were found in the soil with the highest Pi status. The correlation between microbial P uptake and solution P values was significant, and microbial C:P ratios ranged from 12:1 under high available P conditions to 45:1 where P was in low supply.

ORGANIC AND INORGANIC P CONTENT, MOVEMENT AND MINERALIZATION OF P IN SOIL BENEATH A FEEDLOT

1975 ◽  
Vol 55 (4) ◽  
pp. 457-466 ◽  
Author(s):  
L. B. CAMPBELL ◽  
G. J. RACZ
Keyword(s):  
Field Capacity ◽  
Organic P ◽  
Field Soil ◽  
Inorganic P ◽  
Sample Depth ◽  
Extractable P ◽  
P Content ◽  
Field Samples ◽  
Adjacent Field ◽  
Depth Water

Greater amounts of 0.5 M NaHCO3 and water-extractable P were found in soil beneath a cattle feedlot located on an alkaline sandy soil than in soil in an adjacent non-manured field. The 0.5 M NaHCO3-extractable P contents of the feedlot soil samples were greater than for the adjacent field to a depth of 120–150 cm, suggesting that P from the manure had moved to this depth. Water extracted very little P from all field samples and the feedlot samples obtained below 120 cm. Concentration of total P in the feedlot soil was usually greater than in the corresponding field soil. The field soil contained more organic P than the feedlot soil at depths of 0–90 cm. Organic P concentrations at the 0 to 15-cm depths were 268 and 56 ppm for the field and feedlot sites, respectively. The organic C:N:P ratios for the 0 to 15-cm feedlot and field samples were 214:18:1 and 132:8.7:1, respectively. Mineralization of organic P in laboratory experiments was greater in flooded soils than in soils maintained at field capacity. Rates of mineralization were greater for manured than for non-manured samples. Organic and inorganic P moved at about equal rates in soil treated with manure extract. Rates of movement of both decreased with increasing sample depth in the feedlot soil. The feedlot soil below 30 cm and the field soils exhibited a high potential for inorganic and organic P fixation. Organic and inorganic P applied as manure extract moved faster than an equivalent concentration of P as KH2PO4.

Soil Inorganic Phosphorus Fractions as Affected by Fertilization

2011 ◽  
Vol 322 ◽  
pp. 108-111 ◽  
Author(s):  
Bao Tong Huang ◽  
Hua Zhou ◽  
Huai Xiang Ding
Keyword(s):  
Inorganic Phosphorus ◽  
Inorganic P ◽  
Liaohe River ◽  
Inorganic P Fractions ◽  
P Application ◽  
River Plain ◽  
P Addition ◽  
Liaohe River Plain ◽  
Different Levels ◽  
Inorganic Phosphorus Fractions

A fifteen-year field trial (started in 1990) was conducted to determine the inorganic P fractions under 8 classical modes of fertilization in the lower reach of Liaohe River Plain. The results showed that Ca2-P, Ca8-P, Al-P and Fe-P decreased in the absence of P application, while increased with supplemental P addition. Interestingly, O-P and Ca10-P, with low bioavailability, increased at different levels under all treatments after 15 years. The contents of inorganic P were low in crop stalk, indicating that P supplying capacity was weak. On the contrary, both fresh pig excretion and decomposed manure were huge inorganic P pools.

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