Research & Development: Annual report 2000

Table of Contents 1.0 INTRODUCTION 1 Structure of the Research & Development Division as at June 30, 2000 2 2.0 OVERVIEW OF THE 2000 FINANCIAL YEAR 4 2.1 Rainfall situation 4 2.2 Budget 4 3.0 PLANTATION FORESTRY 6 3.1 Background 6 3.2 Tree improvement 7 3.2.1 Controlled Pollination 7 3.2.2 Germplasm Assembly 8 3.2.3 Measurement and assessments 9 3.3 The Seed Centre 9 3.3.1 Seed collection and procurement 9 3.3.2 Seed testing and processing 10 3.3.3 Research seedlots 10 3.4 Silviculture 10 3.4.1 Individual-tree growth and mortality models for eucalyptus grandis plantations 10 3.4.2 Predicting and calibrating diameter distributions of eucalyptus grandis plantations 11 3.4.3 Optimising the management of eucalyptus grandis plantations in Zimbabwe 11 3.5 Tree Protection 11 3.5.1 Gonipterus scutellatus infestation at Mtao Estate 12 3.5.2 Advisory Work 12 4.0 SOCIAL AND INDIGENOUS FORESTRY 15 4.1 Introduction 15 4.2 Social forestry 15 4.2.1 The Rehabilitation of the Save Catchment Area: A Socio-economic Perspective 15 4.2.2 The Contribution of Indigenous Fruit Trees to Household Economies 17 4.3 Silviculture and ecology 18 4.3.1 Comparison of soil moisture recharge and depletion under Eucalyptus camaldulensis (Dehnh) and natural vegetation on granite derived sandy soils in Zimbabwe. 18 4.3.2 The Evaluation of Gum Arabic Production: The Case of Acacia Senegal 20 4.4 Tree protection 21 4.4.1 Scale Insect monitoring and in-depth studies 21 4.4.2 Imbrasia belina (Mopane Worms) 21 4.5 Mapping and inventory 21 4.5.1 Mapping 21 4.5.2 Save catchment project 22 5.0 TECHNICAL SERVICES 23 5.1 Introduction 23 5.2 Hardware and software development 23 5.3 Data management 23 5.4 Library Services 23 6.0 PUBLICATIONS AND REPORTS 24 7.0 STAFF ESTABLISHMENT OF THE RESEARCH & DEVELOPMENT DIVISION AS AT 30 December 2000 26