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Nitrogen balance in a citrus orchard
Year:
1984
Source of publication :
Journal of Environmental Quality
Authors :
Bielorai, Hanoch
;
.
Dasberg, Shmuel
;
.
Erner, Yair
;
.
Volume :
13
Co-Authors:
Dasberg, S., Agricultural Research Organization, The Volcani Center, Bet-Dagan 50-250, Israel
Erner, Y., Agricultural Research Organization, The Volcani Center, Bet-Dagan 50-250, Israel
Bielorai, H., Agricultural Research Organization, The Volcani Center, Bet-Dagan 50-250, Israel
Facilitators :
From page:
353
To page:
356
(
Total pages:
4
)
Abstract:
Differential fertillizer and irrigation applications were utilized to assess the N balance over a period of 4 yr in a typical mature 'Shamouti' orange (Citrus sinensis L.) grove located in the coastal plain of Israel. Nitrogen inputs in fertilizer and irrigation water were 100, 180, and 310 kg ha-1 annually for the three main treatments. The N removed by the crop was measured by yield and N content determinations in the fruits; the leached N was measured by sampling below the root zone. It was found that the amount of leached N was similar in the low and medium N applications (< 50 kg N ha-1). At the high N application, > 50 kg N ha-1 was leached and large amounts of N were unaccounted for (approximately 100 kg N ha-1). Analysis of published data on N losses from citrus orchards showed similar large amounts of N not found in the fruit or in the soil mineral N pool after large N applications. The possible pathways for these N losses were discussed. It was concluded that this excess N was either incorporated in the soil organic matter or stored in the tree rather than being denitrified.Differential fertilizer and irrigation applications were utilized to assess the N balance over a period of 4 yr in a typical mature 'Shamouti' orange grove located in the coastal plain of Israel. Nitrogen inputs in fertilizer and irrigation water were 100, 180, and 310 kg ha** minus **1 annually for the three main treatments. The N removed by the crop was measured by yield and N content determinations in the fruits; the leached N was measured by sampling below the root zone. It was found that the amount of leached N was similar in the low and medium N applications. At the high N application, greater than 50 kg N ha** minus **1 was leached and large amounts of N were unaccounted for. Analysis of published data on N losses from citrus orchards showed similar large amounts of N not found in the fruit or in the soil mineral N pool after large N applications. The possible pathways for these N losses were discussed.
Note:
Related Files :
citrus fruit
Citrus sinensis
Fertilizers
Ground Water
irrigation
Israel
Leaching
nitrogen
Nitrogen compounds
nonhuman
Orchards
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More details
DOI :
Article number:
Affiliations:
Database:
Scopus
Publication Type:
Language:
English
Editors' remarks:
ID:
21203
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:42
Scientific Publication
Nitrogen balance in a citrus orchard
13
Dasberg, S., Agricultural Research Organization, The Volcani Center, Bet-Dagan 50-250, Israel
Erner, Y., Agricultural Research Organization, The Volcani Center, Bet-Dagan 50-250, Israel
Bielorai, H., Agricultural Research Organization, The Volcani Center, Bet-Dagan 50-250, Israel
Nitrogen balance in a citrus orchard
Differential fertillizer and irrigation applications were utilized to assess the N balance over a period of 4 yr in a typical mature 'Shamouti' orange (Citrus sinensis L.) grove located in the coastal plain of Israel. Nitrogen inputs in fertilizer and irrigation water were 100, 180, and 310 kg ha-1 annually for the three main treatments. The N removed by the crop was measured by yield and N content determinations in the fruits; the leached N was measured by sampling below the root zone. It was found that the amount of leached N was similar in the low and medium N applications (< 50 kg N ha-1). At the high N application, > 50 kg N ha-1 was leached and large amounts of N were unaccounted for (approximately 100 kg N ha-1). Analysis of published data on N losses from citrus orchards showed similar large amounts of N not found in the fruit or in the soil mineral N pool after large N applications. The possible pathways for these N losses were discussed. It was concluded that this excess N was either incorporated in the soil organic matter or stored in the tree rather than being denitrified.Differential fertilizer and irrigation applications were utilized to assess the N balance over a period of 4 yr in a typical mature 'Shamouti' orange grove located in the coastal plain of Israel. Nitrogen inputs in fertilizer and irrigation water were 100, 180, and 310 kg ha** minus **1 annually for the three main treatments. The N removed by the crop was measured by yield and N content determinations in the fruits; the leached N was measured by sampling below the root zone. It was found that the amount of leached N was similar in the low and medium N applications. At the high N application, greater than 50 kg N ha** minus **1 was leached and large amounts of N were unaccounted for. Analysis of published data on N losses from citrus orchards showed similar large amounts of N not found in the fruit or in the soil mineral N pool after large N applications. The possible pathways for these N losses were discussed.
Scientific Publication
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