Some Weed Species Affecting Soybean Nodulation and Nodule Function

Title
Some Weed Species Affecting Soybean Nodulation and Nodule Function
Publication Date
2012
Author(s)
Chaniago, Irawati
Taji, Acram
Kristiansen, Paul
( author )
OrcID: https://orcid.org/0000-0003-2116-0663
Email: pkristi2@une.edu.au
UNE Id une-id:pkristi2
Jessop, Robin S
Type of document
Journal Article
Language
en
Entity Type
Publication
Publisher
Universitas Brawijaya [Brawijaya University]
Place of publication
Indonesia
UNE publication id
une:12721
Abstract
Experiments aimed at examining the effect of aqueous extracts of three weed species on nodulation and nodule function of soybean cv. Melrose have been carried out at the Laboratory of Plant Physiology and Biotechnology, Department of Agronomy and Soil Science, University of New England, Australia. Aqueous extracts of fresh weed material ('Amaranthus powellii', 'Cyperus rotundus' and 'Paspalum dilatatum') at the concentration of 10% (w/v) were added to a minus-nitrogen Hoagland's nutrient solution in which the soybean plants were grown with 14 hours day length, day and night temperatures of 28 and 20°C, respectively, light intensity of 790 µmol/m²/s, and the relative humidity of 65%. The plants were kept for three weeks prior to the measurement of activity of nitrogenase enzyme and ammonium content of the root nodules. Results demonstrate that all weed extracts reduced the nodulation and nitrogenase activities (ARA) of soybean cv. Melrose. Amaranth was most inhibitory to nitrogenase enzyme activity. However, amaranth extract was less inhibitory than nutgrass extract in total ammonium content.
Link
Citation
Agrivita: Journal of Agricultural Science, 34(2), p. 1-9
ISSN
0126-0537
Start page
1
End page
9

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