Landscape Contractor / Design Build Maintain

JUL 2018

LC/DBM provides landscape contractors with Educational, Imaginative and Practical information about their business, their employees, their machines and their projects.

Issue link: https://landscapecontractor.epubxp.com/i/1004129

Contents of this Issue

Navigation

Page 19 of 55

20 LC DBM I n f o r m a t i o n R e q u e s t # 4 5 0 I n f o r m a t i o n R e q u e s t # 4 4 6 each plot; this caused a small increase in the amount of applied irrigation. Plots were mowed two days per week with a walk-behind reel mower. Height of cut was 0.75 inch (1.9 cm) during the first summer, and 0.87 inch (2.2 cm) during the second one. Plots were fertilized by hand once every two weeks at a nitrogen rate of 0.30 pound/1,000 square feet with a 16N- 6P2 O5 -8K2 O granular fertilizer. Visual turfgrass quality and color ratings were tak - en once every two weeks (nine days after fertilization and two days after mowing). Results and Conclusions During both years, overall average visual turfgrass quality and color were greater than 6.0 (acceptable) for the 100% and 75% opti - mal treatments; the 50% optimal treatment average was not lower than 5.7, which is considerably higher than the minimally ac - ceptable rating of 5.0. In the study, total salts did not build up appreciably in the 0- to 12- inch soil profile because they were irrigated with a high- quality recycled water. In other situations, salt buildup could be a problem. Fortunately, bermudagrass has been reported to possess the highest salt-tolerance rating. Results from deficit irrigation will vary because of multiple factors, but these re - sults show that 75% to 50% optimal (63% to 41% ET o , respectively, for the duration of the warm season) can be used while main - taining acceptable to minimally acceptable bermudagrass quality and color. But the 50% optimal treatment could be too low for many situations, such as desert areas. LC DBM Above During both years the study was conducted, overall average visual turfgrass quality and color were greater than 6.0 (acceptable) for the 100% and 75% optimal treatments. Even the 50% optimal treatment was almost always higher than the minimally acceptable rating of 5.0 for both ratings. Year 1 Year 1 Year 2 Year 2

Articles in this issue

Links on this page

Archives of this issue

view archives of Landscape Contractor / Design Build Maintain - JUL 2018