Growth of Faidherbia albida in nurseries : standard production techniques or air pruning?

Louppe Dominique, Ouattara N'Klo. 1992. Growth of Faidherbia albida in nurseries : standard production techniques or air pruning?. In : Faidherbia albida in the West African Semi-Arid Tropics. Vandenbeldt R.J. (ed.). ICRISAT, ICRAF. Nairobi : ICRAF, 141-143. ISBN 92-9066-220-4 Workshop on Faidherbia albida in the West African semi-arid tropics, Niamey, Niger, 22 Avril 1991/26 Avril 1991.

Autre titre : Croissance de Faidherbia albida en pépinière : techniques de production standard ou élagage naturel?

Résumé : L'enroulement des racines chez Faidherbia albida en pépinière pose un problème. Trois méthodes de culture ont été testées : dans des pots en polyéthylène standard avec ou sans taille de l'extrémité enroulée de la racine et dans des tubes rigides sans fond qui permettent la taille naturelle des racines par flétrissement. Les jeunes plants en pots apparaissent les mieux développés. Cependant, les plants en tubes ont 50% de racines secondaires et 28% de nodules en plus

Résumé (autre langue) : Root coiling in the nursery is a problem with Faidherbia albida. The standard practice is to cut off the root coil at the bottom of the pot before outplanting, but this can hinder plant development. Root coiling and/or roots growing out of the bottoms of the pots occurs in the nursery as early as 18 days after sowing and requires pruning of or pot transfer. Three nursery methods were studied-standard polyethylene pots with and without coil pruning, and rigid tubes that allowed air pruning of roots. Air-pruned plants were generally less developed than potted seedlings. However. they had 50% more secondary roots and 28% more nodules than potted plants with pruned root coils. and suffered less transplant shock. After outplanting, there was no difference in plant development with the three treatments. Coil-pruned potted plants developed a new, effective taproot at the site of the pruning wound. Air-pruned tubed seedlings developed taprootsfrom lateral roots. More work should be done with this method. Also, this study should be repeated in a more drought-stressed environment.

Mots-clés Agrovoc : pépinière, taille des racines, enracinement, système racinaire

Classification Agris : F02 - Multiplication végétative des plantes
K01 - Foresterie - Considérations générales

Auteurs et affiliations

• Louppe Dominique
• Ouattara N'Klo

Source : Cirad - Agritrop (https://agritrop.cirad.fr/465594/)

Métriques

[ Page générée et mise en cache le 2024-12-19 ]