Measurement of available phosphate content of some Spanish soils

✍ Scribed by Teresa Crisanto; C. D. Sutton

• Book ID: 104613721
• Publisher: Springer
• Year: 1973
• Tongue: English
• Weight: 418 KB
• Volume: 39
• Category: Article
• ISSN: 0032-079X
• DOI: 10.1007/bf00014806

✦ Synopsis

E i g h t Spanish and seven English soils were used to examine methods of determining available soil phosphate. The reference value for the a m o u n t of phosphate available was that taken up by six successive cuts of ryegrass grown in a pot experiment.

The L-value had the best overall correlation (r = 0.94) b u t is a lengthy determination. Its laboratory analogue, the E-value, was more rapid and equivalent, with the exception of high-clay soils where it gave anomalous values. An anion-exchange resin technique was most suitable for routine measurement and predicted available phosphate (r = 0.88) satisfactorily.