WORKSHOP PROCEEDINGS EXOTIC APHID PESTS OF CONIFERS: A CRISIS IN AFRICAN FORESTRY SOCIAL FORESTRY CENTRE KENYA FORESTRY RESEARCH INSTITUTE MUGUGA, KENYA 3 - 6 JUNE, 1991 ORGANIZED BY: KENYA FORESTRY RESEARCH INSTITUTE IN TECHNICAL COLLABORATION WITH: FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS AND INTERNATIONAL INSTITUTE OF BIOLOGICAL CONTROL
FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS Rome, 1991

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CONTENTS

PREFACE

OPENING ADDRESS

Hon. George K. Muhoho

KEYNOTE ADDRESS

The Philosophy, Perspective and Goal of the International Workshop on Exotic Aphid Pests on Conifers: A Crisis in African Forestry.
Thomas R. Odhiambo

OVERVIEW PAPERS

Forestry in Africa: An Overview.
P. J. Wood

The Ecology of Conifer Aphids and its Bearing on Forest Establishment and Productivity.
Clive Carter and Gillian Watson

The Cypress Aphid, Cinara cupressi (Buckton) in Africa.
William M. Ciesla

Ecology and Economic Importance of the Aphid Pests, Pineus sp. and Eulachnus rileyi in Exotic Pine Plantations in Southern and Eastern Africa.
S.T. Murphy, Y.J. Abraham and A.E. Cross. 48

COUNTRY REPORTS

Current Status of Cinara cupressi in Burundi, its Impact on Forest Resources and Control Operations.
J.B. Sabukwikopa and S. Muyango

Exotic Conifer Aphids in Kenya, Their Current Status and Options for Management.
A.L. Owour

The Status and Development of Conifer Aphid Damage in Malawi.
C.Z. Chilima

Review of the Pine Woolly Aphid, Pineus pini (L.), a Pest of Pine Plantations in Tanzania.
Alfred Massawe

Review of the Cypress Aphid in Tanzania.
B. S. Kessy

The Case of Cypress Attack by Cinara cupressi in Rwanda.
N.J. Claude and M. Fanstin

Current Status of Aphids in Uganda, Their Impact on Forest Resource and Control Operations So Far Employed .
Peter Kiwuso

A Report on the Current Status of Pine Insect Pests with Particular Reference to Pine Aphids in Zambia.
O. Shakachite and B. Chendauka

Exotic Conifer Aphids in Zimbabwe.
Ramas Mazodze

PEST MANAGEMENT TACTICS

Pernicious Exotic Pests Affecting Forests and Forest Products in Eastern, Central and Southern Africa.
Jeff Odera

Phytosanitary Services in Africa: A Strategy for Avoiding Entry of Forest Pests and Diseases into the Continent.
D.M. Okioga

Survey and Monitoring.
William M. Ciesla

Mechanical Methods, Chemical Control.
Julie Weatherby

Silvicultural Methods of Exotic Aphid Pest Control: Use of Resistant Strains of Host Trees.
F. Owino

Prospects for the Biological Control of Exotic Forest Aphid Pests in Southern and Eastern Africa.
S.T. Murphy, Y.J. Abraham and A.E. Cross.124

Compatibility of Tactics: An Overview.
Melvyn J. Weiss

Impact of the Cypress Aphid Outbreak on the Forest Industry of Kenya
J.O. Gor

PEST MANAGEMENT MODELS

The FRIM/IIBC Control Programme for Malawi.
S.T. Murphy

Integrated Pest Management Model for Kenya.
J.G. Mwangi

Forest Pest Management in the United States.
Melvyn J. Weiss

Regional Programmes for Conifer Aphid Management.
William M. Ciesla

RESOLUTION

PHOTOGRAPHS

LIST OF PARTICIPANTS