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Recovery of tagged fertilizer nitrogen applied to rainfed spring wheat (Triticum aestivum L.) subjected to severe moisture stress
Year:
1983
Source of publication :
Plant and Soil
Authors :
Feigenbaum, Sala
;
.
Volume :
73
Co-Authors:
Feigenbaum, S.
Seligman, N.G.
Benjamin, R.W.
Feinerman, D.
Facilitators :
From page:
265
To page:
274
(
Total pages:
10
)
Abstract:
The fate of nitrogen fertilizer applied to wheat growing on a deep loessial soil in a semi-arid region was studied with15N as KNO3 measured by emission spectrometry. The soil N was monitored at the end of the winter growing season and again at the end of the dry summer period. Nitrogen was applied at rates equivalent to 18 and 6 g m-2. The wheat was grown in 1.25×1.25 m microplots and in 30-cm-diameter plotlets enclosed by a hard plastic pipe that was inserted 60 cm into the ground. The year was relatively dry, with only 200 mm of rainfall, most of it early in the season. Late rains fell after the crop had dried and wet the soil to below 60 cm. Plant growth was less than average and N fertilizer uptake amounted to 22-29% of amount applied. At the end of the summer, 34-65% of the applied fertilizer N was detected in the soil as available mineral N. The amount remaining in the soil organic fraction was difficult to determine but appeared to be between 5 and 19%. Accordingly, gaseous losses between 6 and 16% must have occurred during the growing season, probably during relatively short periods after heavy rains in January and March. The fertilizer application appeared to have caused a "priming effect" because mineral N in soil and plant from non-fertilizer origin, amounted to 12-17 g m-2 in plots where N was applied, compared with 9.5 g m-2 in the control plots. Nitrogen loss from plots with no plants on them was considerable (up to 30%) possibly because they were wet for longer periods. © 1983 Martinus Nijhoff/Dr W. Junk Publishers.
Note:
Related Files :
fertilizer
Moisture stress
nitrogen-15
Nitrogen balance
PRIMING EFFECT
Rainfed
Recovery
utilization
wheat
Show More
Related Content
More details
DOI :
10.1007/BF02197722
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
29767
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:49
Scientific Publication
Recovery of tagged fertilizer nitrogen applied to rainfed spring wheat (Triticum aestivum L.) subjected to severe moisture stress
73
Feigenbaum, S.
Seligman, N.G.
Benjamin, R.W.
Feinerman, D.
Recovery of tagged fertilizer nitrogen applied to rainfed spring wheat (Triticum aestivum L.) subjected to severe moisture stress
The fate of nitrogen fertilizer applied to wheat growing on a deep loessial soil in a semi-arid region was studied with15N as KNO3 measured by emission spectrometry. The soil N was monitored at the end of the winter growing season and again at the end of the dry summer period. Nitrogen was applied at rates equivalent to 18 and 6 g m-2. The wheat was grown in 1.25×1.25 m microplots and in 30-cm-diameter plotlets enclosed by a hard plastic pipe that was inserted 60 cm into the ground. The year was relatively dry, with only 200 mm of rainfall, most of it early in the season. Late rains fell after the crop had dried and wet the soil to below 60 cm. Plant growth was less than average and N fertilizer uptake amounted to 22-29% of amount applied. At the end of the summer, 34-65% of the applied fertilizer N was detected in the soil as available mineral N. The amount remaining in the soil organic fraction was difficult to determine but appeared to be between 5 and 19%. Accordingly, gaseous losses between 6 and 16% must have occurred during the growing season, probably during relatively short periods after heavy rains in January and March. The fertilizer application appeared to have caused a "priming effect" because mineral N in soil and plant from non-fertilizer origin, amounted to 12-17 g m-2 in plots where N was applied, compared with 9.5 g m-2 in the control plots. Nitrogen loss from plots with no plants on them was considerable (up to 30%) possibly because they were wet for longer periods. © 1983 Martinus Nijhoff/Dr W. Junk Publishers.
Scientific Publication
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