Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Accueil du site → Projets de développement → Projets de recherche pour le Développement → 1999 → Biology and control of armoured bush crickets in Southern Africa

UKAID Department for International Development (R4D) 1999

Biology and control of armoured bush crickets in Southern Africa

Bush Crickets Southern Africa

UKAID Department for International Development (R4D)

Titre : Biology and control of armoured bush crickets in Southern Africa

Pays : Botswana

Projet de recherche pour le Développement : R7428

DFID Programme : R7428

Organismes de mise en œuvre
Lead Institutes : Natural Resources Institute (NRI)
Managing Institutes : Natural Resources International Limited (NRIL)
Collaborating Institutes : Department of Agricultural Research, Botswana ; Department of Zoology and Entomology, University of Pretoria ; Grain Crops Research Institute, Agricultural Research Council (South Africa) ; International Crops Research Institute for Semi-Arid Tropics, Malawi (ICRISAT) ; Plant Protection Research Institute, Agricultural Research Council (ARC-PPRI) ; Rothamsted Research

Durée : 01-10-1999 à 30-09-2002

Improved methods for the management of principal pests of cereal-based cropping systems developed and promoted where they are a major constraint to production.
Sorghum and pearl millet are the main subsistence food crops in eastern Botswana, and throughout much of southern Africa. Both suffer sporadic serious damage from Armoured Bush Cricket (ABS), which is rated as the most important cereal panicle pest in Botswana. In neighbouring Namibia, total millet yield loss to ABC during the 1993 outbreak was reliably estimated at 30%, and many farmers’ crops were completely devastated there. Local information suggests that outbreaks are becoming more frequent, and more damaging when they do occur. Hence, there is a need to develop measures that farmers can use to manage this pest, and thereby reduce cereal crop losses. The outputs of this project should improve farmers’ ability to manage this pest significantly, and hence lead to improved food security and the alleviation of poverty. ABC is a priority pest of sorghum and pearl millet throughout southern Africa (Namibian and Botswanan Ministries of Agriculture ; ICRISAT SMIP programme). The 30% overall millet loss to ABC in the 1993 outbreak in Namibia was certainly matched by severe local damage to cereal crops in certain areas of neighbouring countries, but no other proper damage estimates were made. The DFID-funded Kavango Farming Systems Research and Extension Project in NE Namibia, bordering NW Botswana, reports that ABC is a perennial problem for farmers in north-eastern Namibia, over which they have no control. This view was strongly reiterated for Botswana by our collaborators during the pre-project visits. This 3 year project will conduct research to elucidate the population dynamics of ABC, and to develop rational, safe, environmentally benign control techniques appropriate for use by resource-poor farmers against this pest. By the end of the project the population dynamics of ABC in relation to climatic conditions should be understood sufficiently to generate accurate outbreak forecasts at a sub-regional level. There is good reason to expect that novel control measures, based on chemical attraction of crickets to insecticidal baits can be developed, and these will be tested in conjunction with field edge barrier spraying and oviposition attractants, to establish an optimal combination of control measures for use by farmers against the armoured ground cricket

Total Cost to DFID : £323,439

Présentation : UKAID

Page publiée le 25 octobre 2015, mise à jour le 27 octobre 2017