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Articles 1 - 6 of 6
Full-Text Articles in Horticulture
Iron Coated Sand: A Sustainable Substrate Amendment For Nutrient Management And Growth Of Floriculture Crops, Savannah Mead
Iron Coated Sand: A Sustainable Substrate Amendment For Nutrient Management And Growth Of Floriculture Crops, Savannah Mead
Graduate Theses, Dissertations, and Problem Reports (ETD)
Acid mine drainage and phosphorus pollution are two of the most pervasive forms of water contamination in Appalachia and globally. The horticultural industry is a contributor to nutrient pollution via leaching from greenhouses, necessitating the adoption of more sustainable practices for container production in controlled environments. In this thesis, an acid mine drainage-based iron-coated sand product was assessed on its effectiveness for phosphate adsorption when used as a sustainable substrate amendment for soilless container production of flowering ornamentals. The first study centered around the amount of iron-coated sand to use for production of petunias, pansies, and chrysanthemums. Iron-coated sand at …
Identification Of Sesquiterpenes In Wild Tomato Accessions With Activities Against The Potato Aphid And Their Tissue-Specific Engineering In Cultivated Tomato, Fumin Wang
Graduate Theses, Dissertations, and Problem Reports (ETD)
The potato aphid (Macrosiphum euphorbiae Thomas) poses a serious problem in the commercial production of horticultural crops including tomato, since it causes damage by stylet feeding and the transmission of viruses for which it serves as the vector. Application of conventional pesticides being the fundamental tactic in the control of the aphid is increasingly considered insufficient and problematic due to emerging pest resistances and biosafety issues, highlighting the continuing need to develop new efficient and sustainable approaches. Alternatively, glandular trichomes of plants are well-known epidermal hairy tissues producing various secondary metabolites that involve in plant-insect interactions, while the terpene …
Getting To The Root Cause: The Genetic Underpinnings Of Root System Architecture And Rhizodeposition In Sorghum, Farren Smith
Getting To The Root Cause: The Genetic Underpinnings Of Root System Architecture And Rhizodeposition In Sorghum, Farren Smith
Graduate Theses, Dissertations, and Problem Reports (ETD)
Plants are some of the most diverse organisms on earth, consisting of more than 350,000 different species. To understand the underlying processes that contributed to plant diversification, it is fundamental to identify the genetic and genomic components that facilitated various adaptations over evolutionary history. Most studies to date have focused on the underlying controls of above-ground traits such as grain and vegetation; however, little is known about the “hidden half” of plants. Root systems comprise half of the total plant structure and provide vital functions such as anchorage, resource acquisition, and storage of energy reserves. The execution of these key …
Alternative Media And Mulches In Organic Vegetable Production, Heather R. Griffith
Alternative Media And Mulches In Organic Vegetable Production, Heather R. Griffith
Graduate Theses, Dissertations, and Problem Reports (ETD)
Reducing or eliminating waste from organic vegetable production can conserve money as well as resources. Conventional greenhouse production of vegetable transplants often relies on abundant fertigation which produces large amounts of polluted runoff, and the field production of organic vegetables frequently relies on the use of polyethylene mulch. A greenhouse study was conducted to determine if organic transplants can be successfully produced in a greenhouse under reduced soil moisture in order to reduce leaching of nutrients and potential water pollution. To test this, we compared the effect of reduced irrigation volumes to the standard practice of irrigating with 120% of …
Evaluating The Potential Of Methyl Jasmonate Application As An Agricultural Practice On Phytochemicals In Brassica Vegetables: Sensory Quality, Cooking, And Cost-Benefit Analysis, Yu-Chun Chiu
Graduate Theses, Dissertations, and Problem Reports (ETD)
In the United States, Brassica vegetables, including broccoli (Brassica oleracea var. italica) and kale (Brassica oleracea var. acephala or Brassicae napus var. pabularia), are widely consumed and are easily accessible in farmer’s market or grocery stores with increasing interest of their health-promoting properties. For example, the consumption of broccoli has been associated with anti-cancer activity in in vitro and in vivo trails due to the high content of phytochemicals, minerals, vitamins, and fibers. Application of methyl jasmonate (MeJA) has been reported to enhance the potential health-promoting compounds in Brassica vegetables, glucosinolates (GS), especially indolyl GS neoglucobrassicin …
Enhancing Water Stress Tolerance In Floriculture Crops, Suejin Park
Enhancing Water Stress Tolerance In Floriculture Crops, Suejin Park
Graduate Theses, Dissertations, and Problem Reports (ETD)
Water deficit is one of the major constraints on plant growth and development, causing reduction of crop productivity. To minimize water loss, among many adaptation strategies, plants close their stomata to reduce transpiration. The stomatal closure is regulated by light, internal CO2 concentration, and plant hormones, mainly abscisic acid. Plants’ response mechanisms to water deficit are complex processes involving numerous genes and various signaling pathways. Floriculture crops are often exposed to water deficit during shipping and retailing, and these periods often result in damaged crops and profit loss. Understanding of plant responses to water deficit stress will provide us an …