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Delaying Bud Break In ‘Edelweiss’ Grapevines To Avoid Spring Frost Injury By Naa And Vegetable Oil Applications, Issam M. Qrunfleh
Delaying Bud Break In ‘Edelweiss’ Grapevines To Avoid Spring Frost Injury By Naa And Vegetable Oil Applications, Issam M. Qrunfleh
Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research
Delaying bud break is an approach to avoid spring frost damage. Field experiments were conducted during the winters of 2009 and 2010 at James Arthur Vineyards in Raymond, Nebraska to study the effect of spraying NAA and Amigo Oil on delaying bud break in ‘Edelweiss’ grapevines to avoid such damage. In 2009, the experiment consisted of five treatments: NAA (500, 750, and 1000 mg/l), oil applied at 10%, and the non-sprayed control. There were four application dates: January 6, February 3, March 3, and April 1. Bud break was evaluated throughout spring. During harvest, the number of clusters and weights …
Micropropagation And Acclimatization Of 'Norton' Grapevine (Vitis Aestivalis), Brant B. Bigger
Micropropagation And Acclimatization Of 'Norton' Grapevine (Vitis Aestivalis), Brant B. Bigger
Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research
Propagation of the Vitis aestivalis cultivar 'Norton‘ (syn='Cynthiana‘) through traditional woody cuttings has been difficult. Rooting of woody cuttings has been a major hindrance in propagating this cultivar and providing enough plants to meet grower needs. In vitro propagation offers another method of increasing plant material. Cultures were established and maintained on Murashige and Skoog (MS) medium supplemented with 4 M 6-benzyladenine (BA) and thiamine at 0.5 mg•L-1 and solidified with Difco-Bacto agar at 7.5 g•L-1. The objectives of this study were to determine optimal methods for in vitro production and ex vitro establishment of 'Norton‘ plantlets. …