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et al., 1993 ). Most buffalograss is commercially treated with KNO 3 followed by chilling to overcome dormancy ( Fry, 1995 ), which increases germination from 10% to 80% ( Riordan et al., 1997 ). Optimum spring seeding dates for buffalograss

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141 POSTER SESSION 21 (Abstr. 833-841) Seeds and Seedlings

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Poster Session 34—Seed and Stand Establishment 30 July 2006, 12:00–12:45 p.m.

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Plants produce seeds to ensure the greatest establishment and survival success for future generations ( Stoehr and El-Kassaby, 2011 ). One innate mechanism to increase seedling success is seed dormancy. The critical function of dormancy is to

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Stanhay, Carraro, and Gaspardo precision vegetable seeders were evaluated for seeding uniformity with seeds of five vegetable crops—cabbage (Brassica oleracea L. Capitata group), carrot (Daucus carota L.), cucumber (Cucumis sativus L.), onion (Allium cepa L. Cepa group), and spinach (Spinacia oleracea L.). Five measurements [mean, percentage of misses, percentage of multiples, quality of feed, and precision (defined as the coefficient of variation after misses and multiples were discarded)] were used to evaluate seeder uniformity. Using all five measurements provided a more complete determination of the metering uniformity of the seeders than was possible in prior work when only mean and coefficient of variation were used. The belt seeder (Stanhay) was effective at singulating spherical seeds (cabbage) and nearly spherical seeds (onion)as the most precise vacuum seeder (Carraro). Seeding uniformity of all seeders with elongated (carrot and cucumber) or angular (spinach) seeds was inadequate for precision seeding.

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( Zuk and Fry, 2005 ). Bermudagrass is used extensively in the transition zone, but until recently there were no seeded turf-type cultivars that had acceptable freezing tolerance. ‘Yukon’ bermudagrass was released in 2002 by Oklahoma State University

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are also consumed by cooking ( Manandhar, 2002 ; Moerman, 1998 ). Some bottle gourd types are mainly grown for edible seeds ( Achigan-Dako et al . , 2008 ). Lagenaria seeds are good sources of lipids and proteins ( Achu et al., 2005 ; Loukou et al

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135 ORAL SESSION (Abstr. 645-650) CROSS-COMMODITY SEED PHYSIOLOGY II

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While this article describes important steps to reduce the presence of potentially seedborne pathogens in seed production fields, information contained herein constitutes suggestions only and does not guarantee a disease-free crop. Despite

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different management practices is the best way to manage ascochyta blight of chickpea ( Gan et al., 2006 ). Integrated management programs include crop rotation, seed certification and testing, fungicide seed treatment, partially resistant cultivars, and

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