Search Results

You are looking at 1 - 2 of 2 items for

  • Author or Editor: A. A. Baltensperger x
Clear All Modify Search

Abstract

The response of bermudagrass clones (Cynodon spp.) to reduced light intensity was determined in a greenhouse experiment. Thirty-two phenotypically diverse bermudagrass clones from broad geographic origins were subjected to two light treatments. The high-light treatment consisted of sunlight supplemented with fluorescent and incandescent light banks (160 µmol·s–1·m–2). The low-light treatment was a 90% reduction of the high-light treatment (16 µmol·s–1·m–2). Visual color, leaf length, stem internode length, stem elongation, chlorophyll concentration, and dry weight were measured. Bermudagrass clones responded to reduced light by exhibiting shorter leaves, shorter stem internodes, reduced green color, lower chlorophyll concentration and decreased dry weights. ‘Boise’, ‘No Mow’, ‘R9-P1’, ‘NM2-13’, and ‘NM3’ have been identified as being moderately insensitive to reduced light intensity, and data suggest enough variability exists to select for shade tolerance in bermudagrass.

Open Access

Abstract

A field experiment was conducted to determine if the turf quality of bermudagrass (Cynodon dactylon L. Pers.) was influenced by an interaction of genotype and nitrogen fertilization. The currently recommended level for maintenance of adequate quality in New Mexico bermudagrass turf is 48 kg N/ha per month during the growing season, the highest rate used in the study. The response of 10 bermudagrass genotypes, ‘Common’, ‘FB 49’, ‘FB 119’, ‘FB 133’, ‘N-7’, ‘NM-B1’, ‘Ormond’, ‘Santa Ana’, ‘Tifgreen’, and ‘Texturf 10’ were evaluated at N levels of 0, 16, 33 and 48 kg N/ha per month during the growing season. Color, density, and clipping yield responses of the genotypes differed for the four N fertility Ievels.‘Texturf 10’ had the highest overall ranking at 48 kg N/ha per month and ‘Ormond’ had the highest ranking at 32 and 16 kg N/ha per month. Thus, cultivar selection must be considered in arriving at precision N fertilization of bermudagrass turf.

Open Access