EurekaMag.com logo
+ Site Statistics
References:
48,252,460
Abstracts:
22,798,453
+ Resolve Accession
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
Submit PDF Full TextSubmit PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Effects of soil properties on plant-available phosphorus determined by the isotopic dilution phosphorus-32 method


, : Effects of soil properties on plant-available phosphorus determined by the isotopic dilution phosphorus-32 method. Soil Science Society of America journal 52(5): 1383-1390

A procedure using 32P isotopic exchange kinetics was suggested to characterize the availability of soil P. The ratio of the radioactivity remaining in the solution over the total radioactivity (r1/R) was closely and inversely proportional to the maximum P-fixation capacity (M) estimated by the Langmuir isotherm (r = 0.82 , significant at the 0.01 probability level) and to the P-buffering capacity (Mb) (r = 0.71 ). The 1/r1/R) ratio was also correlated with oxalate-Al (r = 0.69 ) and oxalate-Fe (r = 0.35 ). The kinetic parameter, n, described as the decrease of radioactivity remaining in the solution with time, was related to the soil pH (r = -0.52 ), the prevailing form of soil P (Mehlich ratio Q, r = -0.50 ), the P-fixation capacity (r = 0.44 ), and organic matter (r = 0.44 ). The isotopically exchangeable P (E1 value) was closely related to the plant P uptake on soils having low P-adsorption capacity (Group III, r = 0.90 ). However, E1 value may overestimate the available P on high P-fixing soils especially for acid Spodosols (Group I, r = 0.47 ). The water soluble P (M1) or the labile P pool (M1 + M2) showed a curvilinear (logarithmic) relationship with plant P uptake and the correlation coefficient was higher than that obtained from E1 when grouping all soils together. The effect of soil properties on the relation between plant P uptake and E1, log M1, or log (M1 + M2) was confirmed by the increase of the coefficient of determination (R2) of the multiple regression including soil parameters as second variable. An exponential relationship was observed between relative yield (%) and E1, M1, (M1 + M2); the R2 value was 50.4, 65.1, and 68.1%, respectively. The three classes of soil P fertility (poor, medium, rich) were established for E1, M1, and (M1 + M2) according to the Cate and Nelson procedure.

Order PDF Full Text

Close
Close

Click here to order any other PDF Full Text


Accession: 001820061

DOI: 10.2136/sssaj1988.03615995005200050033x

Download PDF Full Text: Effects of soil properties on plant-available phosphorus determined by the isotopic dilution phosphorus-32 method


Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:
Close
Close

Other references

Nakatsu, C.H.; Fukumori, F.; Fulthorpe, R.R.; Hausinger, R.P.; Holben, W.E.; Kamagata, Y.; Korona, R.; Lenski, R.E.; Maltseva, O.V.; Matheson, V.G.ace; Mcgowan, C.; Suwa, Y.; Tiedje, J.M.; Tonso, N.L.; Top, E.M.; Wright, A.D.; Forney, L.J., 1997: Genetic diversity of 2,4-dichlorophenoxyacetic acid catabolic genes. Horikoshi, K [Editor], Fukuda, M [Editor], Kudo, T [Editor] Microbial diversity and genetics of biodegradation 197-206

Thongboonkerd, V.; Barati, M.T.; McLeish, K.R.; Pierce, W.M.; Epstein, P.N.; Klein, J.B., 2003: Proteomics and diabetic nephropathy. Contributions to Nephrology 141: 142-154

Clark; Elvers; Heinemann; Hennemann; Zeller; Zenneck, 2000: P(6) Manganocene and P(3) Cymantrene: Consequences of the Inclusion of Phosphorus Atoms in Mn-Coordinated Cyclopentadienyl Ligands This work was supported by the Deutsche Forschungsgemeinschaft and the Fonds der Chemischen Industrie. A.E., M.H., and M.Z. thank the DFG-Graduiertenkolleg ("Phosphorchemie als Bindeglied verschiedener chemischer Disziplinen" of the University of Kaiserslautern) and M.Z. also thanks the Studienstiftung des Deutschen Volkes for fellowships. Angewandte Chemie 39(12): 2087-2091

Belton, K.L.; Jhangri, G.S.; MacDonald, S.D.; Voaklander, D.C., 2005: Nighttime impaired driving in rural Alberta. A nighttime roadside survey of drivers in rural Alberta, Canada was conducted to quantify the nature and extent of impaired driving on Alberta's rural roads during nighttime. The survey also sought to describe driver demographics and informat...

STOVNER.J.; LINDELL.S., 1952: Controlled hypotension in prevention of surgical hemorrhage. Nordisk Medicin 47(7): 206-209

Willener, A.S.T.; Handrich, Y.; Halsey, L.G.; Strike, Sán., 2016: Fat King Penguins Are Less Steady on Their Feet. Returning to the shore after a feeding sojourn at sea, king penguins often undertake a relatively long terrestrial journey to the breeding colony carrying a heavy, mostly frontal, accumulation of fat along with food in the stomach for chick-provis...

Alpay, L.; Giffen, R., 1999: Investigating a concept-based tool to enhance the process of curriculum development: an example for healthcare education. This paper reports on a first exploration carried out in the CoMET (COncept Modelling Environment for Teachers) project to investigate the educational potential of a concept-based toolkit developed in the GALEN project. In particular, on whether s...

Wilson S.J., 1982: Influence of social class sex and type of feedback on childrens motivation to solve cognitively challenging tasks. Third-grade boys and girls (128) from working-class and middle-class families worked at either an easy version of a cognitive task or a difficult (cognitively challenging) version. Half of the children received nonmaterial rewards as feedback, whi...

Hanlin, H.G.; Martin, F.D.; Wike, L.D.; Bennett, S.H., 2000: Terrestrial activity, abundance and species richness of amphibians in managed forests in South Carolina. We determined the relative abundance, days of surface activity and indices of species diversity, evenness and richness for amphibians inhabiting three differently managed forests surrounding a Carolina bay in South Carolina following restoration....

Beeton, K.; D.K.eijn, P.; Hilliard, P.; Funk, S.; Zourikian, N.; Bergstrom, B-M.; Engelbert, R.H.H.; Van Der Net, J.J.; Manco-Johnson, M.J.; Petrini, P.; Van den Berg, M.; Abad, A.; Feldman, B.M.; Doria, A.S.; Lundin, B.; Poonnoose, P.M.; John, J.A.; Kavitha, M.L.; Padankatti, S.M.; Devadarasini, M.; Pazani, D.; Srivastava, A.; Van Genderen, F.R.; Vachalathiti, R., 2006: Recent developments in clinimetric instruments. Assessment of impairment and function is essential in order to monitor joint status and evaluate therapeutic interventions in patients with haemophilia. The improvements in the treatment of haemophilia have required the development of more sensiti...