Find Your Location Using Resection. Resection is the method of locating one's position on a map by determining the grid azimuth to at least two well-defined locations that can be pinpointed on the map. For greater accuracy, the desired method of resection would be to use three or more well-defined locations. When using the map and compass method--.
MYTH: All thatch is bad. FACT: most lawns have a layer of thatch, even healthy lawns. However, when that layer builds up to more than 1/2, it needs to be reduced. MYTH: Thatch is caused by lawn clippings. FACT: Grass clippings are made up mostly of water and nutrients (approximately 90%). Remove only 1/3 of the grass at one time and leave the clippings.
1 Compacted soils and soils with poor structure also contain low microbial activity and are subject to thatch build up. 2  Pesticides. 3  Applications of certain pesticides sometimes cause thatch build up. 4  Multiple applications of some fungicides over a 2- to 3-year period can increase thatch compared to untreated areas.