Variation in Soil Phosphorus Forms in Larix olgensis Plantations in Eastern Montane Area of Northeast China

2012 ◽  
Vol 518-523 ◽  
pp. 4801-4805
Author(s):  
Li Xin Chen ◽  
Wen Biao Duan
Keyword(s):  
Rhizosphere Soil ◽  
Organic Phosphorus ◽  
Soil Phosphorus ◽  
Inorganic Phosphorus ◽  
Field Investigation ◽  
Stand Age ◽  
Available Phosphorus ◽  
Larix Olgensis ◽  
Phosphorus Forms ◽  
Mature Stand

Variation in total phosphorus (TP), available phosphorus (AP), the forms of organic phosphorus (OP) and inorganic phosphorus (IP) in rhizosphere soil (RS) and non-rhizosphere soil (NRS) at different development stages in larch (Larix olgensis) plantations was quantitively studied through field investigation, chemical analysis and statistical test. The results indicated that: AP, O-P (occluded phosphate), TP, OP in RS exhibited a significantly or apparently decreased tendency over stand age, but IP, Ca-P (phosphate combined with calcium) and Fe-P (phosphate combined with Ferrum) in RS presented a significantly or apparently increased trend when stand age increased; Ca-P in NRS increased when stand age became larger; Fe-P in half-mature stand (HMS), AP and Fe-P in near mature stand (NMS), AP and Ca-P in mature stand (MS) in NRS was higher than in RS

Variation in Soil Acidity in Larch Plantations in Eastern Montane Area of Northeast China and its Effect on Soil Phosphorus Forms

2012 ◽  
Vol 518-523 ◽  
pp. 4796-4800
Author(s):  
Li Xin Chen ◽  
Wen Biao Duan ◽  
Jing Hua Wang
Keyword(s):  
Northeast China ◽  
Rhizosphere Soil ◽  
Ph Value ◽  
Organic Phosphorus ◽  
Soil Phosphorus ◽  
Close Correlation ◽  
Larch Plantation ◽  
Young Stand ◽  
Mature Stand ◽  
Moderately Resistant

Variations in SA in various stands of first rotation larch plantation (FRLP) at different development stages (DDS), and in young stand (YS) of second rotation larch plantation (SRLP) in eastern montane area of northeast China and the relationship between SA and various forms of OP and IP were studied. Our results demonstrated that soil active acidity (pH value, SAA) in rhizosphere soil (RS) decreased continually with increasing stand ages from YS, half-mature stand (HMS), near mature stand (NMS) to mature stand (MS), but SAA in non-rhizosphere soil (NRS), exchange acidity (EA), exchangeable aluminium (EAL), total hydrolytic acidity (THA), and the ratio of EA to THA in RS and NRS increased apparently; when SA increased, total organic phosphorus (TOP), moderately resistant organic phosphorus (MROP), and highly resistant organic phosphorus (HROP) decreased in all stands of FRLP. For all stands except in HMS, when EA in RS increased, TOP, MROP, and HROP decreased. The correlation between labile organic phosphorus (LOP) and SAA, THA in RS reached highly significant level (HSL) at P=0.01 or significant level (SL) at P=0.05, respectively. Correlation coefficient (CC) between LOP and THA in RS diminished as stand ages increased. Positive correlation between moderately liable organic phosphorus (MLOP) and SAA in RS reached SL at P=0.05 or HSL at P=0.01 in all stands. In most stands, the close correlation existed between MROP and soil potential acidity (SPA), and between HROP and SPA, respectively.

An attempted fractionation of the soil phosphorus

1938 ◽  
Vol 28 (2) ◽  
pp. 234-246 ◽  
Author(s):  
L. A. Dean
Keyword(s):  
Sodium Hydroxide ◽  
Organic Phosphorus ◽  
Soil Phosphorus ◽  
Inorganic Phosphorus ◽  
Soil Extracts ◽  
Soil Calcium ◽  
Soluble Phosphorus ◽  
Total Soil Phosphorus ◽  
Continued Use ◽  
Phosphatic Fertilizers

1. Extractions of soils with sodium hydroxide, followed by an acid, have been used in an attempt to fractionate the soil phosphorus.2. Colorimetric methods for the estimation of the organic and inorganic phosphorus in alkali soil extracts have been suggested.3. The amount of soil phosphorus soluble in sodium hydroxide is affected by the active soil calcium. It is suggested that sodium-saturated soils be used when studying the alkali-soluble phosphorus.4. The acid-soluble phosphorus remaining in soil after extraction with sodium hydroxide was determined. This fraction appears by analogy to be similar to the apatites.5. The largest fraction of the total soil phosphorus was not dissolved by the sodium hydroxide and acid extractions. This fraction was not increased by the long-continued use of phosphatic fertilizers at Rothamsted and Woburn.6. Relatively large amounts of organic phosphorus were found in soils and the amounts were closely related to the carbon contents.

Seasonal and fertilizer effects on the organic cycle and microbial biomass in a hill country soil under pasture

Soil Research ◽  
1992 ◽  
Vol 30 (3) ◽  
pp. 383 ◽  
Author(s):  
KW Perrott ◽  
SU Sarathchandra ◽  
BW Dow
Keyword(s):  
Microbial Biomass ◽  
Sodium Bicarbonate ◽  
Organic Phosphorus ◽  
Soil Phosphorus ◽  
Phosphorus Uptake ◽  
Phosphate Fertilizer ◽  
Inorganic Phosphorus ◽  
Pasture Production ◽  
Hill Country ◽  
Soil Microbial

A two year investigation of soil phosphorus and the soil organic cycle was carried out on a typical hill country site in the North Island, New Zealand. This included investigation of changes in soil phosphorus, as well as seasonal and fertilizer (superphosphate) effects on soil microbial phosphorus and sulfur, sodium bicarbonate extractable phosphorus and calcium chloride extractable sulfur. No net utilization of soil organic phosphorus occurred when application of phosphate fertilizer was withheld. On the contrary, accumulation of organic phosphorus was found in both fertilized and unfertilized plots. Immobilization of inorganic phosphorus into organic forms appeared to be a significant factor in fertilizer phosphorus requirements at this site. It was also a significant cause of the decline in the soil phosphorus status when no fertilizer was applied. Despite declining pasture production, there were no effects of withholding superphosphate on the soil biological cycle as measured by soil microbial phosphorus and sulfur, total organic phosphorus and sodium bicarbonate extractable organic phosphorus. However, seasonal variations occurred indicating storage and release of phosphorus by the soil organic matter and microbial biomass. Release of phosphorus occurred during periods of rapid pasture growth and could account for phosphorus uptake by the pasture at those times.

INORGANIC PHOSPHORUS FORMS IN SOME ALBERTA SOILS AS RELATED TO SOIL DEVELOPMENT, PARENT MATERIAL AND AVAILABLE PHOSPHORUS

1968 ◽  
Vol 48 (3) ◽  
pp. 289-295 ◽  
Author(s):  
T. G. Alexander ◽  
J. A. Robertson
Keyword(s):  
Inorganic Phosphorus ◽  
Soil Development ◽  
Parent Material ◽  
Available P ◽  
Available Phosphorus ◽  
Inorganic P ◽  
Podzolic Soils ◽  
Phosphorus Forms ◽  
P Content ◽  
Close Relationship

Inorganic P forms in 18 profiles representing five great groups of Alberta soils were determined by the modified Chang and Jackson procedure. Ca-P is dominant in the Chernozemic Brown and Black soils and in the C horizons containing CaCO3, while Fe-P and Al-P or Occl-P are the main forms in the Podzolic soils. Three series high in available P contain appreciable amounts of Al-P and Fe-P in their surface horizons. The organic P content is relatively high in the soils exhibiting the least pedogenic development.With increasing degree of soil development, Fe-P and Occl-P tend to increase. However, parent materials have a marked influence on the distribution of inorganic P forms and a close relationship between soil development and distribution of inorganic P forms does not appear to exist in these soils. The Al-P and Fe-P forms seem to be the major sources of available P in the soils studied.

scholarly journals Improving Phosphorus Availability in an Acid Soil Using Organic Amendments Produced from Agroindustrial Wastes

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Huck Ywih Ch’ng ◽  
Osumanu Haruna Ahmed ◽  
Nik Muhamad Ab. Majid
Keyword(s):  
Organic Phosphorus ◽  
Acid Soil ◽  
Organic Amendments ◽  
Chemical Properties ◽  
Acid Soils ◽  
Inorganic Phosphorus ◽  
Phosphorus Availability ◽  
Available Phosphorus ◽  
Exchangeable Acidity ◽  
Chicken Litter

In acid soils, soluble inorganic phosphorus is fixed by aluminium and iron. To overcome this problem, acid soils are limed to fix aluminium and iron but this practice is not economical. The practice is also not environmentally friendly. This study was conducted to improve phosphorus availability using organic amendments (biochar and compost produced from chicken litter and pineapple leaves, resp.) to fix aluminium and iron instead of phosphorus. Amending soil with biochar or compost or a mixture of biochar and compost increased total phosphorus, available phosphorus, inorganic phosphorus fractions (soluble inorganic phosphorus, aluminium bound inorganic phosphorus, iron bound inorganic phosphorus, redundant soluble inorganic phosphorus, and calcium bound phosphorus), and organic phosphorus. This was possible because the organic amendments increased soil pH and reduced exchangeable acidity, exchangeable aluminium, and exchangeable iron. The findings suggest that the organic amendments altered soil chemical properties in a way that enhanced the availability of phosphorus in this study. The amendments effectively fixed aluminium and iron instead of phosphorus, thus rendering phosphorus available by keeping the inorganic phosphorus in a bioavailable labile phosphorus pool for a longer period compared with application of Triple Superphosphate without organic amendments.

A METHOD FOR THE DETERMINATION OF ORGANIC PHOSPHORUS IN SOILS AND SOIL EXTRACTS

1939 ◽  
Vol 17b (7) ◽  
pp. 199-205 ◽  
Author(s):  
C. L. Wrenshall ◽  
W. J. Dyer
Keyword(s):  
Hydrochloric Acid ◽  
Organic Phosphorus ◽  
Soil Phosphorus ◽  
Ammonium Hydroxide ◽  
Inorganic Phosphorus ◽  
Considerable Proportion ◽  
Alkaline Soil ◽  
Colour Reaction ◽  
Soil Extracts ◽  
The Difference

Dissolved organic phosphorus may be determined, even in highly coloured alkaline soil extracts, by the application of photoelectric colorimetry to the ceruleomolybdate colour reaction of phosphate ions. Total organic phosphorus may be extracted from soil with 4 N hydrochloric acid followed by treatment of the residue with 3 N ammonium hydroxide. Inorganic phosphorus is determined by direct colorimetry in the acid extract and in the acidified alkaline extract. Total phosphorus is determined similarly in each extract after ignition. The difference between total and inorganic phosphorus is equivalent to the organically combined phosphorus content of the soil sample.The soil organic phosphorus was found to be stable under these treatments. A considerable proportion of the organic phosphorus is extracted by acid, and the total soil phosphorus is almost completely extracted by the two treatments with 4 N hydrochloric acid and 3 N ammonium hydroxide.

scholarly journals The distribution and availability of phosphorus fractions in restored cut slopes soil aggregates along altitude gradient

2022 ◽  
Author(s):  
Mengke Zhu ◽  
Bocong Huang ◽  
Zongyang Liu ◽  
yue Wang ◽  
jiao Teng ◽  
...  
Keyword(s):  
Particle Size ◽  
Organic Phosphorus ◽  
Soil Aggregates ◽  
Aggregate Size ◽  
Inorganic Phosphorus ◽  
Available Phosphorus ◽  
Soil P ◽  
Multiple Stepwise Regression Analysis ◽  
Significant Difference ◽  
P Fertilizer

The distribution and availability of phosphorus (P) fractions in restored cut slope soil aggregates along altitude gradients were studied. We examined soil aggregates total phosphorus (TP), available phosphorus (AP) and phosphorus activation coefficient (PAC), and discovered that there was no significant difference in TP at four altitudes (p> 0.05), but there was a significant difference in AP at 3009 m, 3347 m and 3980 m (p< 0.05). At 3009 m, 3347 m and 3654 m, the AP accumulation in small size aggregates were more advantageous. Overall, PAC dropped steadily as aggregate size increased, as shown by PAC (3654 m)> PAC (3347 m)> PAC (3009 m)> PAC (3980 m) in altitudes. In all particle size soil aggregates, total inorganic phosphorus (TPi) > total organic phosphorus (TPo) > residual phosphorus (R-P) at 3009 m, 3347 m and 3654 m; TPo> TPi> R-P at 3980 m. Through correlation and multiple stepwise regression analysis, we concluded that active NaHCO3-Pi was the main AP source. It was suggested that more attention should be paid to the ratio of small particle size aggregates, so as to increase soil AP storage. At low (3009 m) and high altitude (3980 m), inorganic P fertilizer and P activator were added into soil to improve the activation ability of soil P and the AP supply, so as to promote the healthy development of slope soils ecosystem.

scholarly journals Utilisation of inorganic and organic soil phosphorus in a hill country soil

1992 ◽  
pp. 65-69 ◽  
Author(s):  
K.W. Perrott
Keyword(s):  
Phosphate Rock ◽  
Organic Phosphorus ◽  
Soil Phosphorus ◽  
Organic Soil ◽  
Inorganic Phosphorus ◽  
P Fractions ◽  
Inorganic P ◽  
Soil P ◽  
Hill Country ◽  
Phosphate Rock Residues

Changes in phosphorus (P) fractions of unfertilised and fertilised (superphosphate) soil were investigated over five years at a hill country site near Te Kuiti. Only soil inorganic P (Pi) reserves were utilised for plant uptake when superphosphate was withheld at the site. Immobilisation of P as soil organic P (PO) contributed to depletion of the soil Pi reserves during the first two years of this trial. Where superphosphate was applied, immobilisation of P as PO amounted to about 25% of applied P during the five years measurements were made. Changes in soil P fractions indicated that all forms of soil Pi were utilised when superphosphate was withheld. These included readily available Pi, Al- Pi, Fe-Pi, and residual phosphate rock from previous fertiliser applications. Depletion of the phosphate rock residues in the soil also occurred where superphosphate was applied and appears to have been completed within about two years. The phosphate rock residues had probably accumulated because of the relatively high amounts of unacidulated phosphate rock in superphosphate manufactured before 1983. Accumulation of Po associated with humic acid, or adsorbed on surfaces of hy drous oxides of Al and Fe, occurred in both fertilised and unfertilised soils. The more labile forms of PO also increased in the fertilised soil. Keywords inorganic phosphorus, organic phosphorus, phosphorus immobilisation, soil phosphorus, soil phosphorus fractions, soil phosphorus utilisation.

Phosphate responses in relation to soil tests and organic phosphorus

1960 ◽  
Vol 54 (3) ◽  
pp. 341-347 ◽  
Author(s):  
M. T. Friend ◽  
H. F. Birch
Keyword(s):  
Organic Phosphorus ◽  
Soil Phosphorus ◽  
Inorganic Phosphorus ◽  
Soil Extract ◽  
Water Soluble ◽  
Phosphorus Fraction ◽  
Retention Capacity ◽  
Phosphate Retention ◽  
Total Soil Phosphorus ◽  
Phosphate Response

Phosphate responses of wheat in a number of soil types have been correlated with the amounts of phosphate extracted by ten different methods. Of these only total organic phosphorus, and inorganic phosphorus extracted with hot 0·1N caustic soda, were significantly related to phosphate response, the former at the 1% level and the latter at the 5% level. The amount of organic phosphorus in the soil was also found to be significantly related, in each instance at the 5% level, to phosphate responses of grass and the percentage phosphate in the grass. When the amount of organic phosphorus was considered together with the phosphate retention capacity of the soil, to give a measure of available mineralized phosphate, the relationships to response (and uptake of phosphorus by grasses) was more significant than with organic phosphorus alone.The organic phosphorus fraction accounted for about 86% of the total soil phosphorus. Measurable amounts of water-soluble organic phosphorus were found with all the soils. The amounts were, however, not significantly related to phosphate response. Moreover, it was found that while the soil extract containing organic phosphorus decomposed, it did so without the production of mineral phosphate. From this, and further evidence in the literature, it is considered that the organic complex in the soil, rather than the water soluble phosphorus, is the main source for the plant.

scholarly journals Alkaline Phosphomonoesterase-Harboring Microorganisms Mediate Soil Phosphorus Transformation With Stand Age in Chinese Pinus massoniana Plantations

2020 ◽  
Vol 11 ◽  
Author(s):  
Yueming Liang ◽  
Mingjin Li ◽  
Fujing Pan ◽  
Jiangming Ma ◽  
Zhangqi Yang ◽  
...  
Keyword(s):  
Organic Phosphorus ◽  
Soil Depth ◽  
Soil Phosphorus ◽  
Pinus Massoniana ◽  
Stand Age ◽  
P Fractions ◽  
Soil P ◽  
Soil P Fractions ◽  
Alkaline Phosphomonoesterase ◽  
Phosphorus Transformation

phoD-harboring microorganisms facilitate mineralization of organic phosphorus (P), while their role in the regulation of soil P turnover under P-limited conditions in Pinus massoniana plantations is poorly understood. The aim of the present study was to investigate the effects of stand age and season on soil P fractions and phoD-harboring microorganism communities in a chronosequence of Chinese P. massoniana plantations including 3, 19, and 58 years. The soil P fractions (i.e., CaCl2-P, citrate-P, enzyme-P, and HCl-P) varied seasonally, with the higher values observed in the rainy season. The concentrations of the fractions were higher in old plantation (OP) soils and lower in young planation (YP) soils in both seasons. The OTU abundances were negatively correlated with total available P concentration, while were positively correlated with alkaline phosphomonoesterase (ALP) activity at 0–10 cm soil depth. The results indicate that phoD-harboring microorganisms have great potential to mineralize organic P under P-poor conditions and highlights those microorganisms are indicators of P bioavailability in P. massoniana plantations.

Sign in / Sign up

Export Citation Format

Share Document