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Published:
Sep 18, 2008Keywords:
Yam Scutellonema bradys nematode intercrops host.
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The copyright of a submitted article is only transferred to the publishers if and when the article is accepted for publication. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, electrostatic, mechanical, photocopying, recording or otherwise without the prior written permission of the publishers.
Main Article Content
Host Status of Yam Component Crops to Scutellonema bradys (Steiner and LeHew) Andrassy
Abstract
This study was carried out to assess the contribution of yam intercrops in the continued infestation of yam tubers with S. bradys. Seven main intercrops of yam and two cowpea varieties were used for the study. The cowpea varieties were used as a check because yams were dormant at the time of the study. S. bradys-infested yam tubers bought from the Kumasi Central Market were used as inoculum. The modified Baermann funnel method for nematode extraction was used. Based on the number of juveniles and adults of S. bradys recovered from the root tissues, cowpea, tomato, okra, cassava and sorghum were found to be alternative hosts of the nematode. However, cowpea and tomato
were very good alternative hosts. Maize, melon and chilli pepper were non-hosts. Nematode
multiplication in roots showed that S. bradys could survive endoparasitically in the roots of other crops. The effect of nematode numbers on the state of the roots of the intercrops screened revealed that generally, necrosis increased with increasing number of the nematode. Following this study, it is recommended that maize, melon and chilli pepper could be intercropped with yam.
Keywords: Yam, Scutellonema bradys, nematode, intercrops, host.
Journal of Science and Technology Vol. 28 (2) 2008: pp. 48-53
