Field and laboratory investigations in agroecology /

Agroecological Investigations
Studies of Environmental Factors
Effect of Microclimate on Seed Germination p. 3
Light Transmission and the Vegetative Canopy p. 19
Soil Temperature p. 33
Soil Moisture Content p. 43
Soil Properties Analysis p. 53
Canopy Litterfall Analysis p. 69
Mulch System Comparison p. 77
Root System Response to Soil Type p. 95
Studies of Population Dynamics in Crop Systems
Intraspecific Interactions in a Crop Population p. 107
Management History and the Weed Seedbank p. 121
Comparison of Arthropod Populations p. 139
Census of Soil-Surface Fauna p. 151
Studies of Interspecific Interactions in Cropping Communities
Bioassay for Allelopathic Potential p. 165
Rhizobium Nodulation in Legumes p. 189
Effects of Agroecosystem Diversity on Herbivore Activity p. 201
Grazing Intensity and Net Primary Productivity p. 211
Herbivore Feeding Preferences p. 221
Studies of Farm and Field Systems
Effects of a Weedy Border on Insect Populations p. 233
Mapping Agroecosystem Biodiversity p. 245
Overyielding in an Intercrop System p. 253
Effects of Trees in an Agroecosystem p. 269
Food System Studies
On-Farm Energy Use p. 285
Farmer Interview p. 295
Local Food Market Analysis p. 301
Instructor's Appendices
Planning the Field and Laboratory Course p. 311
Equipment and Facilities p. 312
Choosing Investigations to Match Your Goals p. 314
Choosing Investigations for Your Climate and Season p. 314
Scheduling the Investigations p. 316
Combining and Coordinating Investigations p. 316
Modifying Investigations p. 318
Accumulating Data from Year to Year p. 318
Running the Field and Laboratory Course p. 321
Preparing and Maintaining the Investigation Set-ups p. 321
Working With Teams p. 322
Using the Datasheets p. 322
Sharing Data Among Teams p. 322
Assigning Work p. 323
General Appendices
Measurement Equivalents p. 325
Equipment and Materials Suppliers p. 329