EFFECT OF MODIFICATIONS OF THE P-BRAY NO-1 METHOD ON SOIL TEST-RESULTS

Authors
DRECHSEL P MUTWEWINGABO B HAGEDORN F
Citation
P. Drechsel et al., EFFECT OF MODIFICATIONS OF THE P-BRAY NO-1 METHOD ON SOIL TEST-RESULTS, Zeitschrift fur Pflanzenernahrung und Bodenkunde, 159(4), 1996, pp. 409-410
Citations number
6
Categorie Soggetti
Plant Sciences
Journal title
Zeitschrift fur Pflanzenernahrung und Bodenkunde → ACNP
ISSN journal
00443263
Volume
159
Issue
4
Year of publication
1996
Pages
409 - 410
Database
ISI
SICI code
0044-3263(1996)159:4<409:EOMOTP>2.0.ZU;2-Q
Abstract
The importance of typical modification of the Bray no. 1 procedure for the determination of ''available'' soil phosphorus was assessed using soil samples from Rwanda. Variations in shaking time (1 or 5 min.), s oil to extraction solution ratio (1:7 or 1:10), and soil sieve size (2 mm vs. 0.5 mm) were found to significantly affect available P values. The modifications gave values which were up to 75% higher than those of the original Bray no. 1 procedure.