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African Crop Science Journal
African Crop Science Society
ISSN: 1021-9730
EISSN: 2072-6589
Vol. 5, No. 4, 1997, pp. 413-418
Bioline Code: cs97046
Full paper language: English
Document type: Short Communication
Document available free of charge

African Crop Science Journal, Vol. 5, No. 4, 1997, pp. 413-418

 fr
Macdonald, I.

Résumé

La morphologie racinaire de Bixa orellana L. est typique au systeme radiculaire des dicotyledons caracterise par une racine principale portant plusieurs racines laterales. L'effet de la composition minerale du sol recolte dans six etats du Nigeria, sur la production des racines de Bixa orellana a fait l'objet d'une etude. On a observe que le sol ayant une plus grande fertilite avait aussi un rendement en poids de matiere seche plus eleve et une plus grande production des racines. Les teneurs en azote dans la zone racinaire influencait la production des racines plus que celles de potassium et de phosphore. Cependant, N, K et P n'ont presente aucune influence sur l'elongation de la racine principale.

Mots Clés
Bixa, elements mineraux, extension des racines, sud du Nigeria

 
 en Studies on the root systems of Bixa orellana
Macdonald, I.

Abstract

The root morphology of Bixa orellana L. is typical of a dicot root system with a central tap root holding several laterals. The effect of nutrient status of soil, collected from six states of Nigeria, on Bixa orellana root production was studied. It was observed that soil with higher fertility had higher dry weight matter yield and greater production of roots. Nitrogen levels in the rooting medium influenced root production more than did K and P. However, N, K and P had no influence on the elongation of the tap root.

Keywords
Bixa, nutrients, root extension, Southern Nigeria

 
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