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Analysis of growing media by means of a 1: 1½ volume extract

 

作者: C. Sonneveld,   J. van den Ende,   P. A. van Dijk,  

 

期刊: Communications in Soil Science and Plant Analysis  （Taylor Available online 1974）
卷期: Volume 5, issue 3  

页码: 183-202

 

ISSN:0010-3624

 

年代: 1974

 

DOI:10.1080/00103627409366497

 

出版商: Taylor & Francis Group

 

关键词: growing media;soil solution;aqueous extracts;salt and nutrient status

 

数据来源: Taylor

 

摘要:

Analysis of the salt and nutrient status of potting composts and growing substrates with the aid of the 1:25 weight extract ‐ previously used in the Netherlands ‐ has several disadvantages. The interpretation of analytical data based on the organic matter content is not very accurate because this content does not provide a true estimation of the moisture capacity. In addition the conductivity of growing media rich in gypsum gives an unfavourable impression of the salt status.

 

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