Aquaculture CRSP
PD/A CRSP
Management Entity Oregon State University 418 Snell, Corvallis OR 97331
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Pond Fertilization: Ecological Approach and Practical Applications

By Christopher F. Knud-Hansen

Contents

Preface

Acknowledgments


Chapter 1. Introduction (69 K PDF File)

Chapter 2. Ecological Concepts Related to Pond Production (145 K PDF File)

Biological Production
Primary and Secondary Production
Detritus
Decomposition
Physical Properties Related to Pond Production
Thermal Characteristics of Pond Water
Turbidity

Chapter 3. Managing Algal Productivity (166 K PDF File)

Algal Nutrient Dynamics
Phosphorus
Nitrogen
Inorganic Carbon
Controlling Algal Productivity

Chapter 4. Comparative Analysis of Fertilizers (247 K PDF File)

Analytical Factors
Fertilization Goals
Cost-Efficiency Analysis
Maintaining a Favorable Growth Environment
     Dissolved Oxygen
     Un-Ionized Ammonia Toxicity
Animal Manures
Types
Nutrient Availability
Environmental Impacts
Farm Costs
Green Manures
Types
Nutrient Availability
Environmental Impacts
Farm Costs
Chemical Fertilizers
Types
Nutrient Availability
Environmental Impacts
Farm Costs

Chapter 5. Pond Characteristics that Affect Fertilization Decisions (124 K PDF File)

Pond Location
Pond Source Water
Pond Size
Pond Depth
Pond Surface Area
Pond Sediments
Structures for Pond Culture
Cages
Pens
Hapas
Bamboo and Baffles

Chapter 6. Methods for Determining Fertilization Requirements (149 K PDF File)

Predetermined, Fixed Fertilization Rates
Fixed Rates
Frequency of Fertilization
Fertilization Rates Based on Pond-Specific Measurements
Water Chemistry
Pond Sediment Chemistry
Computer Modeling
Algal Bioassay

Chapter 7. Fertile Areas for Practical Fertilization Research (89 K PDF File)

Pond Ecology
Fertilizers
Methods for Determining Pond Fertilization Requirements
Experimental Design

Appendix 1. Algal Bioassay Methodology to Determine Pond Fertilization Requirements (143 K PDF File)

Pond Water Collection
Nutrient Spikes
Incubation of Culture Bottles
Algal Biomass Comparisons
Filter Interpretation for Determining Fertilization Requirements
Frequency of Algal Bioassay Testing

Appendix 2. General Guide for Pond Fertilization Based on Pond Ecology and Farm Economics (82 K PDF File)

Appendix 3. Acronyms (28 K PDF File)

Literature Cited (101 K PDF File)
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The Pond Dynamics/Aquaculture CRSP is funded under USAID Grant No. LAG-G-00-96-90015-00 and by the participating US and Host Country institutions. Questions for or about the Aquaculture CRSP? Comments about this site? Email aquafish@oregonstate.edu.

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