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Ammonia‐treated vermiculite—a possible controlled‐release n‐fertiliser
Author(s) -
Russell James D.,
Fraser Anthony R.
Publication year - 1977
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740280913
Subject(s) - vermiculite , leaching (pedology) , ammonium , ammonia , nitrogen , chemistry , agronomy , environmental chemistry , nuclear chemistry , environmental science , horticulture , biology , soil water , organic chemistry , soil science
The preparation of ammonium‐treated vermiculite containing almost 1.3 % ammonium‐N is described. The product is relatively stable on storage in air for 3 years, but during leaching with water for 20 weeks, 2.8–4.0 mm flakes released 30% of their N and 0.25–0.5 mm flakes 90%. Its potential as a controlled‐release nitrogen fertiliser is briefly discussed.