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N‐Aufnahme und ‐Verwertung verschiedener N‐Düngerformen durch Winterweizen – Gefäßversuche mit 15 N
Author(s) -
Müller S.
Publication year - 1992
Publication title -
journal of agronomy and crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.095
H-Index - 74
eISSN - 1439-037X
pISSN - 0931-2250
DOI - 10.1111/j.1439-037x.1992.tb01009.x
Subject(s) - loam , urea , ammonium , chemistry , fertilizer , ammonium nitrate , nitrate , zoology , agronomy , ammonia volatilization from urea , soil water , biology , ecology , biochemistry , organic chemistry
Abstract N‐uptake and N utilization of different fertilizer types by winter wheat – pot experiments with 15 N The efficiency of top dressing urea, ammonium nitrate and ammonium sulphate fertilizers on winter wheat grown on loamy sand and loessial black soil was studied. At a rate of 0.5 g N per pot on the loamy sand 20 % volatilization losses of NH 3 occurred with urea and 10 % on the loessial black soil with urea resp. ammonium sulphate. The grain yields an N removal correspond to these results. At an amount of 1.6 g N per pot the N‐uptake of 15 N ranged from 0.589 g (urea) on sandy soils to 1.279 g (ammonium nitrate) which agrees with 76 % an 91 % of the total N uptake. On black soil 0.675 g (urea) and 1.038 g (ammonium nitrate) or 44 % and 51 % of the total uptake are found.