Bemerkungen zu Handzeichnungen von Mangoldsippen aus dem Jahre 1689

Ohne Zusammenfassung     

Aufnahme von Atrazin-Metaboliten durch Hafer neun Jahre nach der Herbizid–Applikation

Uptake of atrazine metabolites by oat plants nine years after the herbicide application The uptake of atrazine metabolites by oats under field conditions was investigated 9 years after the herbicide application. In the spring of 1973 the soil was treated with ¹⁴C-ringlabeled atrazine and cultivated with various plant species each year. The soil was seeded to oats in early May of 1982. In August the oat plants were harvested and analysed. 2-Hydroxy-4-amino-6-isopropylamino-s-triazine and 2-hydroxy-4-ethylamino-6-amino-s-triazine were identified in conjugated form in the plant material. Neither free atrazine nor any other phytotoxic 2-chloro-metabolites could be found.     

Contents of Volume 100

Water, Air, &; Soil Pollution -     

Stickstoffstatus eines Braunerde-Podsols unter Kiefer zehn Jahre nach Melioration mit Müllkompost

Nitrogen status of a Scots pine site 10 years after fertilization with composted municipal waste A haplorthod was fertilized with composted municipal waste (CMW) in 1978. The N-losses in a 10 year observation time are in the range of conventional fertilizer experiments. The C/N-ratio of the organic layers was narrowed after treatment. The fractional determination of the organic forms of nitrogen showed an increase of the stable humin-N-fractions in the organic layers of the treated plots. In comparison with the untreated plots, the amount of mineralizable nitrogen in the organic layers decreased, the NH₄/NO₃-ratio was narrowed. The N-content of the pine-needles increased. The better N-supply of the pines (Pinus silvestris) caused an increase of the basal area increment.     

Ein aufschlußreicher Brief Friedrich Alefeld's an George Bentham aus dem Jahre 1866

Ohne Zusammenfassung     

Author Index of Volume 100

Water, Air, &; Soil Pollution -