Browsing by Subject "Corylus"
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Item Accessions from University of Minnesota Fruit Breeding Program 1923-1950: Accessions N231 to N50174(1950) Horticultural Research CenterItem Addressing Production Bottlenecks of Emerging Nursery Crop Species in the Upper Midwest(2024-06) Headley, AlyssaImproved availability of emerging specialty crops will bolster species diversity in managed landscapes as well as fruit and nut production systems. This project encompasses two different studies that together address production bottlenecks in the nursery and highlight the value of developing protocols to facilitate the development of underutilized crops. Desert olive (Forestiera pubescens), a large shrub or small tree native to the southwestern United States, exhibits ornamental value and potential for broader application in managed landscapes. Purported tolerances to both drought and flooding suggest F. pubescens is well-suited for diversification of landscapes in urban settings and in green infrastructure. However, if this species is to be adopted by the nursery trade and produced on a large scale, propagation protocols need to be developed. Mouse ear disorder (MED) is an issue commonly encountered in container production of river birch and pecan, but may be more widespread. New protocols involving nickel treatment would enable and enhance the production of persimmon and hazelnuts, as well as create guidelines that protect growers and the environment.Item Dataset for "The Hazel Stem Borer, Agrilus pseudocoryli (Coleoptera: Buprestidae), as a Pest of Hybrid Hazelnuts"(2023-05-15) Perish, Patrick K; Lindsey, Amelia R I; Koch, Alexa; Aukema, Brian H; Shanovich, Hailey N; hnshanovich@gmail.com; Shanovich, Hailey NItem Duplicate Pollination Records from University of Minnesota Fruit Breeding Program from 1930-1935(1935) Horticultural Research CenterItem Duplicate Pollination Records from University of Minnesota Fruit Breeding Program from 1936-1941(1941) Horticultural Research CenterItem Hazelnut and Chinese chestnut plantings from 1949-1951(1951) Horticultural Research CenterItem Nitrogen Fertilization of Hybrid Hazelnuts in the Upper Midwest of the USA(2008-11) Braun, Lois CarolineHybrids of Corylus avellana, C. americana and C. cornuta, are proposed as an alternative crop for the Upper Midwest. Current nitrogen (N) recommendations for European hazelnut production are based on research from Oregon and may not be applicable to hybrids in Minnesota due to differing soils, climate, genetics, and growing systems. In 2003, I initiated three years of N rate trials on three new plantings and on four young established plantings, from four to seven years old, using N rates of 0, 2.75, 5.5, 11, 22, 33, and 44 g N·plant-1. I observed a strong negative linear effect on survival when new transplants were fertilized within the first year of transplanting. Survival was not affected when fertilization was postponed one year, but even then these hybrid hazelnuts responded only to low N rates relative to those recommended in Oregon. Leaf N concentrations were within the expected ranges established for European hazelnuts in Oregon, suggesting that Oregon standards may be applied to hybrid hazelnuts, except that 2.2% leaf N should be considered adequate, rather than a threshold to sufficiency. In another experiment conducted at two sites with young bearing bushes, I used 15N-labeled ammonium nitrate to compare N uptake efficiency (NUE) from soil applications in mid-April, late April, late May, early August, and mid-September 2005. N uptake was slow before bud-break. N applied in the spring after bud-break was quickly translocated to plant parts with the greatest near-term demand for N: first to leaves, then to nuts and catkins. Nitrogen applied in August and September appeared in new shoots the following April, showing that N applied late in the season may be stored below ground over the winter. NUE was highest for August and September applications at one site and August and mid-April applications at the other, suggesting that summer is generally the best time to apply N for most efficient uptake. However, overall NUE was low, only 9% for the treatment with the highest efficiency, supporting our conclusion that hybrid hazelnuts have a low demand for N during establishment and early maturity. Nitrogen requirements may, however, increase with nut production.Item Original Pollination Records from University of Minnesota Fruit Breeding Program from 1935-1941(1941) Horticultural Research CenterItem Original Pollination Records from University of Minnesota Fruit Breeding Program from 1942-1949(1949) Horticultural Research CenterItem Pollination Records from University of Minnesota Fruit Breeding Program from 1932-1935(1935) Horticultural Research CenterItem Pollination Records from University of Minnesota Fruit Breeding Program from 1936-1941(1941) Horticultural Research CenterItem Pollination Records from University of Minnesota Fruit Breeding Program from 1942-1949(1949) Horticultural Research CenterItem Pollination Records from University of Minnesota Fruit Breeding Program from 1950-1955(1955) Horticultural Research CenterItem Scion wood distributions from University of Minnesota Fruit Breeding Program from 1955-1967.(1967) Horticultural Research Center