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The effect of straw and monolinuron application on the fate of 15 N‐urea in lysimeters
Author(s) -
Sotiriou N.,
Klein W.,
Korte F.
Publication year - 1983
Publication title -
zeitschrift für pflanzenernährung und bodenkunde
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 87
eISSN - 1522-2624
pISSN - 0044-3263
DOI - 10.1002/jpln.19831460113
Subject(s) - straw , lysimeter , urea , loess , leaching (pedology) , fertilizer , chemistry , agronomy , soil water , zoology , environmental science , soil science , biology , paleontology , organic chemistry
The influence of herbicide application (monolinuron) and manuring with straw on the fate of urea 15 N was studied in two soil types. The major loss of urea N applied to soil can be considered as denitrification rather than downward migration (leaching). This loss was higher in the loess than in the sandy soil; incorporation of straw slightly increased the loss, whereas addition of monolinuron decreased it. The labelled urea 15 N was better utilized by plants in the sandy than in the loess soil. During the first year after using straw in loess the N uptake by plants significantly decreased. Addition of monolinuron did not change the utilization of urea‐ N . In the second year there was only little utilization of the N residues by barley. The highest fertilizer N residues were found in soil that had been treated with straw. A slight increase of residual fertilizer N was also observed in the monolinuron‐treated soil. The amount of residual fertilizer N in the non‐treated soils was similar in the sandy and the loess soil.