Effects of nitrogen source on the growth and nodulation of Acacia mangium in aeroponic culture

Weber Jacques, Tham Foong Yee, Galiana Antoine, Prin Yves, Ducousso Marc, Lee Sing Kong. 2007. Effects of nitrogen source on the growth and nodulation of Acacia mangium in aeroponic culture. Journal of Tropical Forest Science, 19 (2) : 103-112.

Résumé : Effects of ammonium and nitrate on growth and nodulation rates of Acacia mangium inoculated with Bradyrhizolium and grown in aeroponic culture were studied. At concentrations of 13.6 and 4.9 mM, nitrate stimulated plant growth, nitrogen uptake and total chlorophyll content compared with corresponding concentrations of ammonium, which had a deleterious effect. On the other hand, nodulation was depressed with nitrate and totally suppressed with ammonium at these two concentrations. However at 0.4 mM, ammonium actually stimulated nodulation rates and resulted in robust plant growth comparable to that obtained with higher nitrate concentrations. Ammonium nitrification was confirmed to be absent from measurements of the nutrient solutions in acroponic culture tanks.

Mots-clés Agrovoc : Acacia mangium, croissance, culture aéroponique, formation de nodosités, symbiose, Bradyrhizobium, biomasse, azote, nitrification

Classification Agris : F62 - Physiologie végétale - Croissance et développement
K10 - Production forestière
P34 - Biologie du sol
F61 - Physiologie végétale - Nutrition

Champ stratégique Cirad : Axe 1 (2005-2013) - Intensification écologique

Auteurs et affiliations

• Weber Jacques, CIRAD-SG (FRA)
• Tham Foong Yee, Nanyang Technological University (SGP)
• Galiana Antoine, CIRAD-AMIS-UMR LSTM (FRA) ORCID: 0000-0002-5293-5049
• Prin Yves, CIRAD-AMIS-UMR LSTM (FRA) ORCID: 0000-0002-3706-0045
• Ducousso Marc, CIRAD-AMIS-UMR LSTM (FRA)
• Lee Sing Kong, Nanyang Technological University (SGP)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/539532/)

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