AG 001 Lecture Notes - Lecture 11: Lake Erie Basin, Crop Residue, Trifolium Pratense
10 Jun 2020
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Document Summary
Increasing the amount of living green cover or dead crop residue cover: Lake erie algal blooms sensitive to phosphorus inputs. Historically programs promoted adoption of no-tillage to leave residue. Most run-off or losses from agricultural fields occurs during the non-growing season (november may). Map and assess total soil cover (crop residue and cover crops) over the lake. Image of the same area every 16 days (8 days in overlap areas). Three images cover the lake erie basin (4th is a backup). 30 m multi-spectral spatial resolution, 6 bands used (vis-ir-swir). Built on methods of pacheco and mcnairn (2010). Identified fields with range of crop residue and green cover. Corn, soybean, winter wheat, alfalfa, oilseed radish, oats, red clover. Took vertical photos in fields for training and validation during every cloud free satellite pass. 40 50 groundtruth fields per image. Photo-grid count of residue and green cover proportion. Organized data into three seasons for 3 years.
