BLOGS FROM THE FIELD
June 24, 2012Jacqueline Freeman
Agriculture and Agri-Food Canada
The first image is of Saeid and myself measuring crop height and diameter and recording all of the info onto a field sheet. Each field has 3 pre-determined sampling points where all measurements are taken. Then vegetation is collected in labelled paper bags, and then sealed in plastic bags which we transport to the lab crew situated at Ma's Drive-In in Elm Creek. Samples are then weighed (wet) and dried for about 2 days and weighed again (dry). The lab crew also separates the plant parts (leaves, stems) and weighs and dries those to determine where the bulk of the moisture is held within the plant.
This can be tiring work since the camera must be balanced and levelled away from the body, and by using a remote capture the photos. It is important not to have a shadow in the photo (yet not critical), as well as making sure the camera is level so that no horizon can be seen, and to make sure that you are taking photos parallel to the crop rows. Here is Syed capturing an image in a wheat field and bean field.
Upon returning to the ROC, the remaining vegetation samples are given to the lab crew for weighing and separating, cameras are downloaded, field sheets handed in, checkmarks noted on the large boards, and the LAI data transferred.
Thanks for the tour of the plane as well!
Until next time...