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The fate of15N labeled nitrogen applied to mature citrus trees
Year:
1987
Source of publication :
Plant and Soil
Authors :
Bielorai, Hanoch
;
.
Dasberg, Shmuel
;
.
Erner, Yair
;
.
Feigenbaum, Sala
;
.
Volume :
97
Co-Authors:
Feigenbaum, S., Institute of Soils and Water, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Bielorai, H., Institute of Soils and Water, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Erner, Y., Division of Citriculture, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Dasberg, S., Institute of Soils and Water, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Facilitators :
From page:
179
To page:
187
(
Total pages:
9
)
Abstract:
The efficiency and balance of nitrogen from one year's application was studied in a long-term fertigation experiment. Enriched nitrogen fertilizer, K15NO3, was applied to a 22-year-old Shamouti orange tree with a history of high N applications (N3) and to an N-starved tree (N1). The distribution of N in the different parts of the trees and in the soil was determined after the experimental trees were excavated. Similar total recovery of the labeled fertilizer N was found in the trees and soil in both treatments (N1-61.7% N3-56%). However, the distribution between tree and soil was different. The amount of recovered residual fertilizer in the soil was much larger in the N3 treatment than in N1. The highest percentage of fertilizer N was found in the new organs, i.e. fruits, twigs and leaves. The roots and branches took up only 6-14% from the labeled fertilizer. Only 20.9% of the leaf N and 23.4% of the fruit N in the N3 tree originated in the labeled fertilizer, indicating translocation of N from older parts of the tree to new growth. Evidence was found of storage of N in the wooded branches, while the roots contained a surprisingly small part of labeled fertilizer. © 1987 Martinus Nijhoff Publishers.
Note:
Related Files :
Dry matter distribution
fertigation
Hamra soil
leaf area index
Mediterranean climate
oranges
Show More
Related Content
More details
DOI :
10.1007/BF02374940
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
30102
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:52
Scientific Publication
The fate of15N labeled nitrogen applied to mature citrus trees
97
Feigenbaum, S., Institute of Soils and Water, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Bielorai, H., Institute of Soils and Water, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Erner, Y., Division of Citriculture, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Dasberg, S., Institute of Soils and Water, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
The fate of15N labeled nitrogen applied to mature citrus trees
The efficiency and balance of nitrogen from one year's application was studied in a long-term fertigation experiment. Enriched nitrogen fertilizer, K15NO3, was applied to a 22-year-old Shamouti orange tree with a history of high N applications (N3) and to an N-starved tree (N1). The distribution of N in the different parts of the trees and in the soil was determined after the experimental trees were excavated. Similar total recovery of the labeled fertilizer N was found in the trees and soil in both treatments (N1-61.7% N3-56%). However, the distribution between tree and soil was different. The amount of recovered residual fertilizer in the soil was much larger in the N3 treatment than in N1. The highest percentage of fertilizer N was found in the new organs, i.e. fruits, twigs and leaves. The roots and branches took up only 6-14% from the labeled fertilizer. Only 20.9% of the leaf N and 23.4% of the fruit N in the N3 tree originated in the labeled fertilizer, indicating translocation of N from older parts of the tree to new growth. Evidence was found of storage of N in the wooded branches, while the roots contained a surprisingly small part of labeled fertilizer. © 1987 Martinus Nijhoff Publishers.
Scientific Publication
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