Download Field and Laboratory Investigations in Agroecology, Second by Stephen R. Gliessman PDF
By Stephen R. Gliessman
Reviews OF ENVIRONMENTAL FACTORSEffect of Microclimate on Seed GerminationLight Transmission and the Vegetative CanopySoil TemperatureSoil Moisture ContentSoil houses AnalysisCanopy Litterfall AnalysisMulch procedure ComparisonRoot approach reaction to Soil TypeSTUDIES OF inhabitants DYNAMICS IN CROP SYSTEMSIntraspecific Interactions in a Crop PopulationManagement background and the Weed SeedbankComparison of Arthropod PopulationsCensus of Soil-Surface FaunaSTUDIES OF INTERSPECIFIC INTERACTIONS IN CROPPING COMMUNITIESBioassay for Allelopathic PotentialRhizobium Nodulation in LegumesEffects of Agroe. Read more...
summary: reports OF ENVIRONMENTAL FACTORSEffect of Microclimate on Seed GerminationLight Transmission and the Vegetative CanopySoil TemperatureSoil Moisture ContentSoil homes AnalysisCanopy Litterfall AnalysisMulch method ComparisonRoot process reaction to Soil TypeSTUDIES OF inhabitants DYNAMICS IN CROP SYSTEMSIntraspecific Interactions in a Crop PopulationManagement heritage and the Weed SeedbankComparison of Arthropod PopulationsCensus of Soil-Surface FaunaSTUDIES OF INTERSPECIFIC INTERACTIONS IN CROPPING COMMUNITIESBioassay for Allelopathic PotentialRhizobium Nodulation in LegumesEffects of Agroe
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Extra resources for Field and Laboratory Investigations in Agroecology, Second Edition
2. 1 g. Write the mass of each can directly on the can’s lid. 3. Randomly select eight locations within the system at which to take samples. The method for choosing the locations can vary depending on the size of the system, the time available, and the desired degree of randomness. Two basic methods are outlined below. Method A. Extend 8 m of a meter tape and lay it down diagonally through the system. Take samples every 1 m along the tape. Method B. Establish a baseline along one edge of the plot or bed, parallel to the rows of the crop.
An LAI profile, constructed from the data showing which species touched the string at what height, shows the vertical distribution of leaf area in a cropping system. The following steps describe how to construct an LAI profile for one system. indd 19 a. For each 25-cm increment of height in the cropping system, tally up the number of contacts for each species. 1 Example of a completed LAI Datasheet. 2 Example of a completed Light Transmittance Datasheet. indd 21 10/27/06 1:29:23 AM 22 Field and Laboratory Investigations in Agroecology b.
3. 3 Example of an LAI Profile. Write-Up Below are some suggestions for reporting on the results of the investigation. • Describe each agroecosystem’s canopy structure and internal light environment, based on its LAI, mean percent transmittance, and LAI profile. • Discuss how each system’s canopy structure and internal light environment are related. • Discuss how observed differences in the internal light environments among the three systems may relate to differences in the makeup or structure of each system.