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Item Season Extension Using Supplemental Soil Heat in a North Dakota High Tunnel for Warm Season Vegetable Production(North Dakota State University, 2021) Rana, BinuVegetable production options in North Dakota are limited by environmental challenges. Combining soil heating cables and row covers within a high tunnel could protect crops from frost, extending the growing season. Three planting dates at three-week intervals, low tunnel coverings (clear plastic, light frost blanket, and heavy frost blanket), and supplemental soil heating (untreated and soil heating coils) were examined in Absaraka, ND for the effects on two basil and two snap bean cultivars. Soil heating cables increased cumulative harvested basil height by 20% over the untreated control in 2018, but not 2019. Overall, early basil plantings provided the greatest cumulative yield, with ‘Eleonora’ benefiting most from early planting. Cumulative bean yields were significantly increased with early plantings. However, soil heating and covers did not significantly affect cumulative bean yield in either year. Results indicate that in North Dakota, soil heating can increase yields with early plantings and appropriate cultivars.Item High tunnels extend the growing season in warm season crops tomato, cucumber and bell pepper(North Dakota State University, 2020) Splichal, Kyla LouiseHigh tunnels are used to modify the crop environment by trapping solar energy, providing protection from unfavorable weather events, and extending the growing season in temperate regions. This project assessed yield and quality in three independent cultivar trials of warm-season crops tomato (Solanum lycopersicum L.), bell pepper (Capsicum annuum L.) and cucumber (Cucumis sativus L.) grown under high tunnel production compared with an outdoor field in eastern and western North Dakota. Tomato yields in the high tunnel were increased by 1.4 times over the field trial yields. Yields from the pepper cultivar trials both inside the high tunnel and outside field were comparable to one another at 1.24 kg plant-1 and 1.06 kg plant-1, respectively. Cucumber yields in the high tunnel were increased by 1.7 times over the field trial yields. Results indicate that in North Dakota, high tunnels extended the growing season, and increased production relative to field conditions.Item Evaluation of High Tunnel and Field Produced Specialty Cut Flowers in the Northern Great Plains(North Dakota State University, 2019) Kluza, JacobThe demand for local sustainably grown produce and flowers has increased (Low et al., 2015), and stimulated a growing interest in high tunnel production. The goal of this research project was to evaluate the production of cut flowers in high tunnel structures and in the field in the Northern Great Plains (NGP) region. The NGP offers unique climatic and environmental challenges based on its continental climate. Specialty cut flower cultivars Karma Irene and Chocolate dahlia (Dahlia x hybrida), Potomac White and Rocket Mix snapdragon (Antirrhinum majus), and Mariachi Misty Blue, Echo Blue and ABC2 lisianthus (Eustoma grandiflorum) were planted in both field and high tunnel environments at two soil temperature setpoints in the NGP to determine which of the selected crops are best suited for cut flower production. Our results indicate higher yields and more consistent quality in the high tunnel; however, the field was suitable for all species investigated.