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Two grass field trials with a sulphur‐coated urea to examine its potential as a slow release nitrogen fertiliser in the U.K.
Author(s) -
Davies L. H.
Publication year - 1973
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.2740240110
Subject(s) - urea , nitrogen , sulfur , chemistry , dry matter , coated urea , ammonium nitrate , ammonium , formaldehyde , urea formaldehyde , nitrate , agronomy , environmental chemistry , zoology , organic chemistry , biology , adhesive , layer (electronics)
In two trials conducted during 1971 the effects on total and seasonal production of grass dry matter and the crops' nitrogen recovery from a single spring application of a sulphur‐coated urea or urea formaldehyde were compared with an equal amount of nitrogen applied in five dressings of urea or ammonium nitrate. Ammonium nitrate gave higher dry matter yields and nitrogen recovery than urea. Sulphur‐coated urea as a single application gave results similar or superior to split applications of ammonium nitrate, but seasonal distribution of these were slightly different. Urea formaldehyde proved inferior, in the parameters measured, to the other fertilisers.