2003 NC-140 Dwarf Apple Rootstock Trial Performance in 2006

To evaluate the adaptability and performance of new and promising apple rootstocks in the dwarfing size-control category, a NC-140 regional rootstock trial was established in 2003 at 15 sites in the United States (AR, CA, IA, GA, KY, ME, MI, NY, OH, PA, UT, VA, WI), Canada (BC), and Mexico. The Iowa planting, located at the ISU Horticulture Research Station, includes 23 rootstocks with new selections from the Cornell-Geneva breeding program (CG.), Russia (B.), Czech Republic (J-TE), Japan (JM.), and Germany (PiAu). These rootstocks are being evaluated with Gibson Golden Delicious serving as the test cultivar. This report summarizes the tree-growth and production characteristics through the 2006 growing season

Iowa Planting of the 2003 NC-140 Dwarf Apple Rootstock Trial

To evaluate the adaptability and performance of new and promising apple rootstocks in the dwarfing size-control category, a NC-140 regional rootstock trial was established in 2003 at 15 sites in the United States (AR, CA, IA, GA, KY, ME, MI, NY, OH, PA, UT, VA, WI), Canada (BC), and Mexico. The Iowa planting, located at the ISU Horticulture Station, includes 23 rootstocks (CG.3041, CG5935, CG.6210, JTE-G, J-TE-H, JM.1, JM.2, JM.7, JM.8, PiAu 51-11, PiAu 51-4, PiAu 56-83, Bud.62-396, B.9, M.9 Pajam 2, M.26 EMLA, M.9 T337, G.16, JM.4, JM.5, JM.10, PiAu 36-2, CG.5179) that are being evaluated with Gibson Golden Delicious serving as the test cultivar

2002 Leopold Grape Cultivar by Management System Trial

To identify grape cultivars adapted to Iowa, a cultivar by management system trial was established in 2002 at the ISU Horticulture (Hort) Station and the ISU Armstrong Research Farm with the help of a grant from the Leopold Center of Sustainable Agriculture. Fifteen cultivars, including 10 wine and 5 seedless table cultivars, were evaluated under 1) a conventional management system that relies on herbicides for weed control and application of insecticides and fungicides on a regular basis; 2) an IPM/best management system that uses herbicides as needed and relies on monitoring to determine the need for insecticides and fungicides; and 3) an organic-approved system that relies on a straw mulch for weed control and the use of organic-approved insect and disease control strategies. This report summarizes the results for the 2005 growing season

Stark Northern Prize—A Hardy Persian Walnut

Stark Brothers Nursery, Louisiana, Missouri, has released for sale a new walnut cultivar named Stark Northern Prize™. This tree is a cold-resistant Persian (Carpathian) walnut, Juglans regia. It was selected from a population of open-pollinated seedlings planted at the Iowa State University Horticulture Station, Ames, Iowa, in 1971 and was evaluated as ISU71-E18. In 2002, the U.S. plant patent was received for the walnut tree named Domoto. In 2005, pairs of ISU Domoto, aka Stark Northern Prize™, walnut trees were planted at the ISU research farms near Sutherland, Kanawha, Nashua, Lewis, Chariton, and Crawfordsville and at the Horticulture Station north of Ames and on the ISU central campus

Evaluation of Wines from the Cold Hardy Wine Grape Cultivar Trial

In conjunction with the Northeast Regional Research project NE-1020 “Multi-state Evaluation of Wine Grape Cultivars and Clones,” Iowa State University established a cold hardy wine grape cultivar trial in 2008 at the ISU Horticulture Research Station (HRS), Ames, Iowa, and Tabor Home Vineyards and Winery (THV), Baldwin, Iowa. Wines were made from the 2012 crop from six selections growing in the THV plot and were evaluated by winemakers and wine grape growers and non-grower/winemakers at two field days in 2013

Fourth Year Performance of Honeycrisp on 31 Dwarfing Rootstocks of the NC-140 2010 Regional Apple Rootstock Trial

To evaluate the adaptability and performance of new and promising apple rootstocks in the dwarfing size-control category, the NC-140 regional rootstock trial was established in 2010 at 11 sites in the United States (CO, IA, IL, MA, MI, MN, NJ, NY, OH, UT, WI), two sites in Canada (BC, NS), and one site in Mexico (CH) with Honeycrisp serving as the test cultivar. The Iowa planting, located at the ISU Horticulture Research Station, includes 31 rootstocks with new selections from the Cornell-Geneva breeding program (G., CG.), Russia (B.), and Germany (PiAu, Supp.), with M.26 EMLA, M.9 Pajam2 and M.9 T337 serving as industry standards. Tissue cultured propagated (TC) rootstocks of G.41, G.202, and G.935 were included for comparison with normal (N) stool bed propagated rootstocks. This report summarizes the performance of the Iowa planting during the 2013 growing season

NE-1020 Cold Hardy Wine Grape Cultivar Trial

In conjunction with the Northeast Regional Research project NE-1020 “Multi-state evaluation of wine grape cultivars and clones,” Iowa State University established a cold hardy wine grape cultivar trial in 2008 at the ISU Horticulture Research Station (HRS), Ames, Iowa, and Tabor Home Vineyards and Winery (THV), Baldwin, Iowa. The Iowa trials are considered as having a “very cold” dormant season and a “warm” growing season, and evaluate the performance of Corot Noir, La Crescent, Marquette, Petit Ami™, NY95.0301-01 (Arandell), MN1189, MN1200, MN1220, MN1235, MN1258 with Frontenac, and St. Croix serving as controls. Selection NY95.0300-01 was shipped by mistake and was planted in the guard rows and as end-of-row guard vines. This report summarizes the results for the 2014 growing season

Fifth Year Performance of Honeycrisp Grafted on 31 Dwarfing Rootstocks of the NC-140 2010 Regional Apple Rootstock Trial

Dwarfing rootstocks have the potential to increase profitability of tree-fruit growers by providing smaller trees suitable for highdensity plantings. Although the initial installation cost can be 10 to 30 times greater than lower-density plantings, the long-range returns can far exceed the traditional plantings. However, to be viable as a commercial rootstock, dwarfing rootstocks must be adapted to a range of agro-climatic conditions, moderately disease resistant, high yielding, and produce quality fruit

Performance of Gibson Golden Delicious on Dwarfing Rootstocks

To evaluate the adaptability and performance of new and promising apple rootstocks in the dwarfing size-control category, a NC-140 regional rootstock trial was established in 2003 at 14 total sites in the United States (AR, CA, IA, GA, KY, ME, MI, NY, OH, PA, UT, WI), Canada (BC), and Mexico. The Iowa planting, located at the ISU Horticulture Research Station, includes 23 rootstocks with new selectionsfrom theCornell-Geneva breeding program (G., CG.),Russia (B.), Czech Republic (J-TE), Japan (JM.), and Germany (PiAu) with M.26, M.9 Pajam 2 and M.9 T337 serving as industry standards. These rootstocks are being evaluated with Gibson Golden Delicious serving as the test cultivar. This report summarizes the tree-growth and production characteristics through the 2012 growing season