Der einfluss von stickstoff auf die produktivitat des einzelblattes und pflanzenbestandes. Gibt es optimale N-gehalte?

C. Alt; H. Kage; H. Stutzel

Details

Translated title of the contribution	The influence of Nitrogen on single-leaf and whole-crop productivity. Are there optimal N-contents?
Original language	German
Pages (from-to)	103-112
Number of pages	10
Journal	Pflanzenbauwissenschaften
Volume	4
Issue number	2
Publication status	Published - 2000

Abstract

Besides the clear mathematical relationship between photosynthetic capacity and leaf N-content, there are also empirical results showing an adjustment of leaf N-contents in the canopy to the light environment, which is decreasing with depth in the canopy. Even if the intensity of this N-adaptation varies interspecifically, it increases whole-plant CO₂-assimilation compared to a homogeneous N-distribution in the canopy. Following theoretical considerations, crop productivity is enhanced by up to 50% due to adaptation. Models, which calculate whole-plant productivity based on single-leaf photosynthesis as a function of N-distribution and environmental conditions, already exist for various crops, and can be used to determine the optimal, i.e. required for maximum net photosynthesis, N-distribution in the canopy. The use of this information for the determination of N-fertilisation requirements is discussed.

ASJC Scopus subject areas

Agricultural and Biological Sciences(all)
Agronomy and Crop Science

Cite this

Der einfluss von stickstoff auf die produktivitat des einzelblattes und pflanzenbestandes. Gibt es optimale N-gehalte? / Alt, C.; Kage, H.; Stutzel, H.
In: Pflanzenbauwissenschaften, Vol. 4, No. 2, 2000, p. 103-112.

Research output: Contribution to journal › Article › Research › peer review

Alt, C, Kage, H & Stutzel, H 2000, 'Der einfluss von stickstoff auf die produktivitat des einzelblattes und pflanzenbestandes. Gibt es optimale N-gehalte?', Pflanzenbauwissenschaften, vol. 4, no. 2, pp. 103-112.

Alt, C., Kage, H., & Stutzel, H. (2000). Der einfluss von stickstoff auf die produktivitat des einzelblattes und pflanzenbestandes. Gibt es optimale N-gehalte? Pflanzenbauwissenschaften, 4(2), 103-112.

Alt C, Kage H, Stutzel H. Der einfluss von stickstoff auf die produktivitat des einzelblattes und pflanzenbestandes. Gibt es optimale N-gehalte? Pflanzenbauwissenschaften. 2000;4(2):103-112.

Alt, C. ; Kage, H. ; Stutzel, H. / Der einfluss von stickstoff auf die produktivitat des einzelblattes und pflanzenbestandes. Gibt es optimale N-gehalte?. In: Pflanzenbauwissenschaften. 2000 ; Vol. 4, No. 2. pp. 103-112.

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@article{a8e8a6415d204d7dbed0be4af501735a,

title = "Der einfluss von stickstoff auf die produktivitat des einzelblattes und pflanzenbestandes. Gibt es optimale N-gehalte?",

abstract = "Besides the clear mathematical relationship between photosynthetic capacity and leaf N-content, there are also empirical results showing an adjustment of leaf N-contents in the canopy to the light environment, which is decreasing with depth in the canopy. Even if the intensity of this N-adaptation varies interspecifically, it increases whole-plant CO2-assimilation compared to a homogeneous N-distribution in the canopy. Following theoretical considerations, crop productivity is enhanced by up to 50% due to adaptation. Models, which calculate whole-plant productivity based on single-leaf photosynthesis as a function of N-distribution and environmental conditions, already exist for various crops, and can be used to determine the optimal, i.e. required for maximum net photosynthesis, N-distribution in the canopy. The use of this information for the determination of N-fertilisation requirements is discussed.",

keywords = "Nitrogen demand, Nitrogen distribution, Nitrogen supply, Photosynthesis, Respiration",

author = "C. Alt and H. Kage and H. Stutzel",

year = "2000",

language = "Deutsch",

volume = "4",

pages = "103--112",