CSIRO Publishing blank image blank image blank image blank imageBooksblank image blank image blank image blank imageJournalsblank image blank image blank image blank imageAbout Usblank image blank image blank image blank imageShopping Cartblank image blank image blank image You are here: Journals > Soil Research   
Soil Research
Journal Banner
  Soil, Land Care & Environmental Research
 
blank image Search
 
blank image blank image
blank image
 
  Advanced Search
   

Journal Home
About the Journal
Editorial Structure
Contacts
For Advertisers
Content
Online Early
Current Issue
Just Accepted
All Issues
Special Issues
Sample Issue
For Authors
General Information
Scope
Submit Article
Author Instructions
Open Access
For Referees
Referee Guidelines
Review an Article
Annual Referee Index
For Subscribers
Subscription Prices
Customer Service
Print Publication Dates

blue arrow e-Alerts
blank image
Subscribe to our Email Alert or RSS feeds for the latest journal papers.

red arrow Connect with us
blank image
facebook twitter LinkedIn

Now Online

Land Resources Surveys


 

Article << Previous     |     Next >>   Contents Vol 18(1)

Poorly soluble phosphates in Australian superphosphate: their nature and availability to plants

RJ Gilkes and R Lim-Nunez

Australian Journal of Soil Research 18(1) 85 - 95
Published: 1980

Abstract

Australian superphosphates contain approximately 20 % of their phosphorus content as residual apatite and two water-insoluble phosphates, Ca(Fe0.12Al0.88)H(HPO4)2F2.2H20 and (Fe1.88Al1.12) (K0.28Na0.72)H8(PO4)6.6H20 that result from the use of impure rock phosphates. These compounds resemble phosphates occurring in American and New Zealand fertilizers, and comprise the acid and citrate soluble phosphorus fractions that are determined by statutory chemical tests. Glasshouse trials with wheat indicate that they are less effective phosphorus sources than monocalcium phosphate and will probably reduce the agronomic effectiveness of superphosphate.



Full text doi:10.1071/SR9800085

© CSIRO 1980

blank image
Subscriber Login
Username:
Password:  

 
PDF (474 KB) $25
 Export Citation
 Print
  
    
Legal & Privacy | Contact Us | Help

CSIRO

© CSIRO 1996-2015