COMPARISON OF OLSEN AND PI SOIL TESTS FOR EVALUATING PHOSPHORUS BIOAVAILABILITY IN A CALCAREOUS SOIL TREATED WITH SINGLE SUPERPHOSPHATE AND PARTIALLY ACIDULATED PHOSPHATE ROCK

被引：19

作者：

MENON, RG

CHIEN, SH

GADALLA, AE

机构：

[1] International Fertilizer Development Center (IFDC), Muscle Shoals, 35662, AL

[2] Soil and Water Department, Atomic Energy Authority

来源：

FERTILIZER RESEARCH | 1991年 / 29卷 / 02期

关键词：

PI SOIL TEST; OLSEN TEST; CALCAREOUS SOILS; PARTIALLY ACIDULATED PHOSPHATE ROCK; SOIL TEST CORRELATION;

D O I：

10.1007/BF01048954

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

The Pi test for phosphorus (P) is a new method in which strips of iron oxide impregnated filter paper are used as a sink to sorb and extract P from a soil solution. In a greenhouse experiment, the Olsen and Pi tests were compared for their effectiveness in evaluating P availability to maize on calcareous soils. Phosphate rock from Togo, partially acidulated with H2SO4 at 50% acidulation level (PAPR 50% H2SO4) and single superphosphate (SSP) were applied at different rates to a calcareous soil (Vernon Clay, pH 8.2, CaCO3 18.9%) which was preincubated with KH2PO4 to raise plant-available P to different levels. In soils treated with SSP, dry-matter yield of maize correlated equally well with Pi-P and with Olsen-P (r = 0.96***). P uptake correlated significantly with P(i)-P (r = 0.94***) as well as Olsen-P (r = 0.97***). Likewise, in soils fertilized with PAPR, significant correlations were found between dry-matter yield and Pi-P (r = 0.97***) and between dry-matter yield and Olsen-P (r = 0.94***). When all the data were pooled, Pi-P and Olsen-P correlated equally well with both dry-matter weight (r = 0.97***) and P uptake (r = 0.94***). Phosphorus extracted by the Pi test correlated significantly with P extracted by the Olsen test (r = 0.99***).

引用

页码：153 / 158

页数：6

共 19 条

[11]

Menon R.G., Hammond L.L., Sissingh H.A., Determination of plant available phosphorus by the iron hydroxide impregnated filter paper (Pi) soil test, Soil Sci Soc Am J, 53, pp. 110-115, (1989)

[12]

Menon R.G., Chien S.H., Hammond L.L., The Pi soil phosphorus test, A new approach to testing for soil phosphorus. Reference Manual R-7, (1989)

[13]

Murphy J., Riley J.P., A modified single solution method for determination of phosphates in natural waters, Anal Chim Acta, 27, pp. 31-36, (1962)

[14]

Nelson W.L., Mehlich A., Winters E., The development, evaluation, and use of soil tests for phosphorus availability, Agronomy, 4, pp. 153-188, (1953)

[15]

Randall G.W., Grava J., Effect of soil: Bray no. 1 ratios on the amount of phosphorus extracted from calcareous Minnesota soils, Soil Science Society of America Journal, 35, pp. 112-114, (1971)

[16]

Sharpley A.N., Singh U., Uehera G., Kemble J., Modelling soil and plant phosphorus dynamcis in calcareous and highly weathered soils, Soil Sci Soc Am J, 53, pp. 153-158, (1989)

[17]

Sibbesen E., An investigation of the anion exchange resin method for soil phosphorus extraction, Plant Soil, 50, pp. 305-321, (1978)

[18]

Soltanpour P.N., Schwab A.P., A new soil test for the simultaneous extraction of macro and micronutrients in alkaline soils, Commun Soil Sci Plant Anal, 8, pp. 195-207, (1977)

[19]

Wakley A., Black I.A., An examination of the Degtjareff method for determining soil organic matter and a proposed modification of the chronic acid titration method, Soil Science, 37, pp. 29-38, (1934)

← 1 2 →