Invasive Bracken Fern (Pteridium Aquilinium L. Kuhn): A Potential Risk to the Production of Legume Crops in Western Tanzania

Abstract: 
This research established the risks posed to legume crop production by invasion of the degraded agricultural lands in western Tanzania by the bracken fern (Pteridium aquilinium). The test crops included the legumes beans (Phaseolus vulgaris), Pigeon pea (Cajanus cajan), groundnuts (Arachis hypogea) and soybean (Glycine max); and a cereal maize (Zea mays). These were planted in soil containing P. aquilinium root extracts and rhizospheric soil extracts. Germination of the studied seeds was negatively and highly significantly (P=0.001) affected by treatments. Germination of maize was less affected by P. aquilinium toxic compounds compared to legume seeds. The results of this study, partially explains the low plant population of some legume crops observed in P.aquilinium invaded fields in western Tanzania. Agronomic interventions are proposed for increasing land productivity under P. aquilinium invasion.
Cette recherche a établi les risques posés à la production des légumineuses par l’invasion des terres agricoles dégradées dans l’ouest de la Tanzanie par la fougère de Bracken (Pteridium aquilinium). Les cultures d’essai ont inclus les haricots légumineux (Phaseolus vulgaris), Pigeon pea (Cajanuscajan), les arachides (Arachis hypogea) et le soja (Glycine max), et une céréale, le maïs (Zea mays). Elles ont été plantées dans le sol contenant les extraits de racines de P.aquilinium et les extraits de sol rhizosphérique. La germination des graines étudiées était négativement et de façon hautement significative (P = 0,001) affectée par les traitements. La germination du maïs a été moins affectée par des composés toxiques de P. aquilinium comparativement aux graines de légumineuses. Les résultats de cette étude expliquent en partie la faible population des plantes de certaines cultures delégumineuses observées dans les champs envahis par P.aquilinium dans l’ouest de la Tanzanie. Les interventions agronomiques sont proposées pour augmenter la productivité des terres sous l’invasion du P. aquilinium.
Language: 
Extended abstracts submitted under Integrated Crop Management
Country: 
Region Focus: 
East Africa
Collection: 
RUFORUM Conferences and Workshops
Agris Subject Categories: 
Licence conditions: 
Open Access
Access restriction: 
Form: 
Printed resource
Publisher: 
Notes: 

The 2012 RUFORUM Biennial Conference is the third in the series. The main objective of the Biennial conferences is to provide a platform for agricultural research for development stakeholders in Africa and beyond to actively exchange findings and experiences, while at the same time learning lessons towards improving performance of the agricultural sector and ultimately people’s livelihoods. The biennial conference is RUFORUM’s most comprehensive meeting for the diversity of stakeholers in agriculture. It is especially dedicated to graduate students and their supervisors, grantees in RUFORUM member universities and alumni. It is a platform for peer review, quality control, mentorship, networking and shared learning. The third Biennial Conference was attended by 657 participants.This record contains an extended abstract accepted under the theme of Integrated Crop Management