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Bio fertilization of soybean in sandy soils of egypt using N-15 tracer technique

Abstract

The effect of inoculation of soybeans with B. Japonicum and A. brasilense either solely or in mixture, and N fertilizer levels had been studied in pot experiment Nodulation of soybean grown in sandy soil was enhanced by inoculation. The highest values of nodules number and fresh weight were recorded at rate of 20 Kg N ha-1, and decreased with increasing N rate up to 40 kg N ha-1. In contrast, the dry weight of the above ground parts, as well as the N uptake was increased with increasing N fertilizer level. Similar effect was observed for inoculation as compared with the un inoculated treatment. Despite the nodulating and nonnodulating soybeans has almost the same dry weight, the nodulating isoline accumulated more N than the non-nodulating. Percentages of nitrogen derived from air (%Ndfa) was depressed with increasing N rates from 10 to 40 kg N ha-1 either estimated by isotope dilution (I D) or N difference method (D M). Dual inoculation resulted in high percent of N 2-fixed (42.5%) at rate of 10 kg N ha-1. Correlation between I D and D M methods was found to be dependent on inoculation treatments. However, nitrogen utilized by nodulating soybean (FUE%) was enhanced  More>>
Authors:
Soliman, S; Galal, Y G.M.; Elghandour, I [1] 
  1. Soil and Water Dept, Atomic Energy Authority, P.O.Box 13756 (Egypt)
Publication Date:
Oct 01, 1995
Product Type:
Miscellaneous
Report Number:
INIS-EG-001; CONF-9411323-
Reference Number:
SCA: 553002; PA: AIX-28:030235; EDB-97:057866; SN: 97001765054
Resource Relation:
Conference: 2. Arab conference on the peaceful uses of atomic energy, Cairo (Egypt), 5-9 Nov 1994; Other Information: PBD: Oct 1995; Related Information: Is Part Of Proceedings of the second Arab conference on the peaceful uses of atomic energy. Part II: A and B; Barakat, M.F.; El-Mashri, S.M. [eds.]; PB: 1199 p.
Subject:
55 BIOLOGY AND MEDICINE, BASIC STUDIES; SOYBEANS; FERTILIZERS; BACTERIA; EGYPTIAN ARAB REPUBLIC; EXPERIMENTAL DATA; INOCULATION; NITROGEN 15; SAND; SOILS; TRACER TECHNIQUES
OSTI ID:
455968
Research Organizations:
Atomic Energy Authority, Cairo (Egypt); Arab Atomic Energy Agency (AAEA), Tunis (Tunisia); Middle Eastern Regional Radioisotope Centre for the Arab Countries, Cairo (Egypt)
Country of Origin:
Egypt
Language:
English
Other Identifying Numbers:
Other: ON: DE97620040; ISBN 9973-9927-3-3; TRN: EG9601684030235
Availability:
INIS; OSTI as DE97620040
Submitting Site:
INIS
Size:
pp. 671
Announcement Date:
Apr 21, 1997

Citation Formats

Soliman, S, Galal, Y G.M., and Elghandour, I. Bio fertilization of soybean in sandy soils of egypt using N-15 tracer technique. Egypt: N. p., 1995. Web.
Soliman, S, Galal, Y G.M., & Elghandour, I. Bio fertilization of soybean in sandy soils of egypt using N-15 tracer technique. Egypt.
Soliman, S, Galal, Y G.M., and Elghandour, I. 1995. "Bio fertilization of soybean in sandy soils of egypt using N-15 tracer technique." Egypt.
@misc{etde_455968,
title = {Bio fertilization of soybean in sandy soils of egypt using N-15 tracer technique}
author = {Soliman, S, Galal, Y G.M., and Elghandour, I}
abstractNote = {The effect of inoculation of soybeans with B. Japonicum and A. brasilense either solely or in mixture, and N fertilizer levels had been studied in pot experiment Nodulation of soybean grown in sandy soil was enhanced by inoculation. The highest values of nodules number and fresh weight were recorded at rate of 20 Kg N ha-1, and decreased with increasing N rate up to 40 kg N ha-1. In contrast, the dry weight of the above ground parts, as well as the N uptake was increased with increasing N fertilizer level. Similar effect was observed for inoculation as compared with the un inoculated treatment. Despite the nodulating and nonnodulating soybeans has almost the same dry weight, the nodulating isoline accumulated more N than the non-nodulating. Percentages of nitrogen derived from air (%Ndfa) was depressed with increasing N rates from 10 to 40 kg N ha-1 either estimated by isotope dilution (I D) or N difference method (D M). Dual inoculation resulted in high percent of N 2-fixed (42.5%) at rate of 10 kg N ha-1. Correlation between I D and D M methods was found to be dependent on inoculation treatments. However, nitrogen utilized by nodulating soybean (FUE%) was enhanced as a function of inoculation with B. Japonicum. 2 figs., 3 tabs.}
place = {Egypt}
year = {1995}
month = {Oct}
}