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Harívandí, Mohammad Ali., author Butler, J. D., advisor Soltanpour, P. N., committee member Workman, M., committee member 2023-01-27T14:50:56Z 2023-01-27T14:50:56Z 1975 https://hdl.handle.net/10217/236090 https://doi.org/10.25675/3.025027 Covers not scanned. Iron (Fe) chlorosis is a common problem on turfgrasses grown under alkaline soil conditions. The objective of this study was to determine the iron uptake efficiency of different varieties of Kentucky bluegrass. In this study, 25 varieties and 5 blends of Kentucky bluegrass (Poa pratensis L.) were utilized. Maintenance practices for all varieties were the same, and at the time of sampling the grasses were three years old, were well established, and had not been treated with iron containing materials. Soil pH, soil available iron, plant total iron, plant chlorophyll content, and plant iron uptake efficiency were determined. Also, the visual appearance of the turf was scored before sampling. Statistical treatment indicated significant differences in the total iron and chlorophyll content of the varieties. The following significant correlations were observed: (1) soil available iron to iron uptake efficiency (negative); (2) plant total iron to iron uptake efficiency (positive); (3) plant chlorophyll content to plant iron content (positive); (4) plant chlorophyll content to iron uptake efficiency (positive). The varieties and blends were significantly different in their iron uptake efficiency. masters theses English eng Colorado State University. Libraries Catalog record number (MMS ID): 991004131499703361 SB201.K4H3 1950-1979 Copyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright. Kentucky bluegrass Soils -- Iron content Soil and plant factors associated with iron chlorosis of Kentucky bluegrass Text Master of Science (M.S.) Masters Horticulture Colorado State University This Item is protected by copyright and/or related rights (https://rightsstatements.org/vocab/InC/1.0/). You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). open.access