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Hassan Salehi and Morteza Khosh-Khui

Turfgrass seeds can be sown individually, in mixes, or overseeded to provide green color and uniform surfaces in all the seasons. This investigation was conducted to compare different turfgrass species and their seed mixtures. In this research, the turfgrasses—perennial ryegrass (Lolium perenne L. `Barball'), kentucky bluegrass (Poa pratensis L. `Merion'), common bermudagrass (Cynodon dactylon [L.] Pers.), and strong creeping red fescue (Festuca rubra L. var. rubra `Shadow')—in monoculture or in mixtures of 1:1 (by weight) and a 1:1:1:1 (by weight) and two sport turfgrasses—BAR 11 (Barenbrug Co.) and MM (Mommersteeg Co.)—were used. The seeds were sown in March and October (spring and fall sowing) in 1998 and 1999. The experiments were conducted in a split-split block design with year as main plot, sowing season as subplot, and turfgrass types as subsubplot. The turfgrasses were compared by measuring visual quality, chlorophyll index after winter and summer, rooting depth, verdure and/or root fresh and dry weight, tiller density, and clippings fresh and dry weight. Fall sowing was superior to spring sowing and resulted in greater root growth, clipping yield, and chlorophyll content. Poa+Cynodon seed mixture was the best treatment and had high tiller density, root growth, and chlorophyll content. Lolium and Festuca monocultures, and Poa+Festuca and Cynodon+Festuca seed mixtures were not suitable with regard to low tiller density, sensitivity to high temperatures, low root growth, and low tiller density, respectively. The cool-warm-season seed mixture (Poa+Cynodon) can be used alternatively in overseeding programs in the areas with soil and environmental conditions similar to this research site.

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Ouina C. Rutledge and Patricia S. Holloway

The germination, establishment, survival, and public preference of four wild-flower seed mixes were evaluated in relation to irrigation and seasonal sowing date. The mixes included two commercial nonindigenous wildflower mixes, a commercial mix with indigenous and nonindigenous wildflowers, and an experimental mix composed exclusively of Alaska native wildflowers. The two latter mixes were sown with and without `Tundra' glaucous bluegrass (Poa glauca). The two nonindigenous mixes exhibited the greatest seedling establishment during the first season. Fall sowing and irrigation during seed germination significantly increased species establishment for all mixes. In the second season, 11 nonindigenous species did not reappear, whereas all of the indigenous species reappeared. The experimental mix had the greatest species richness of the six mixes in the second season. The addition of grass to the mixes did not significantly affect wildflower species richness in either the first or second season. Survey respondents preferred the nonindigenous wildflower mixes to those containing Alaska native wildflowers because of a greater mix of colors that appeared earlier in the first season than the other mixes. Alaska native species recommended for wildflower mixes include Polemonium acutiflorum, Lupinus arcticus, Hedysarum mackenzii, Arnica alpina, and Aster sibiricus.

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Mark H. Brand, Jessica D. Lubell and Jonathan M. Lehrer

in any environment in the first spring after fall sowing ( Table 3 ). Substantial germination was observed, however, in the second spring with a small amount of additional seed germination occurring in the third spring. This germination pattern

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Christopher S. Cramer

fall sowing in southern New Mexico and similar environments. ‘NuMex Whisper’ matures in mid-June to early July when fall-sown in Las Cruces, NM. Origin ‘NuMex Whisper’ originates from intercrosses among germplasm derived from short-, intermediate-, and

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Christopher S. Cramer and Joe N. Corgan

)], short-day, yellow skin onion cultivar for fall sowing in southern New Mexico and similar environments. ‘NuMex Serenade’ matures in late May to early June when fall-sown in Las Cruces, NM. Origin ‘NuMex Serenade’ originates from ‘NuMex Starlite’ ( Fig. 1

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Robert F. Heyduck, Steven J. Guldan and Ivette Guzmán

. (2011) sowed spinach in high tunnels in September and were able to harvest four times: November, December, January, and February. In our high tunnel study, we examined the effect of fall sowing date (Study A) and staggered harvests of October