Dissertation
Uptake and partitioning of mineral nutrients in concord grape
Washington State University
Doctor of Philosophy (PhD), Washington State University
05/2008
DOI:
https://doi.org/10.7273/000005859
Abstract
The objectives of this research were to develop methodology for root and tissue sampling to monitor the nutrient status of Concord grapes (Vitis labruscana Bailey), investigate seasonal distribution pattern of Concord grape roots, investigate seasonal pattern of macronutrients and micronutrient uptake and redistribution in Concord grapes, and identify the tissue type and the best time to sample grapevines for routine nutritional evaluation. The study was conducted in a 42 year-old Concord vineyard. The site was furrow irrigated fine sandy loam. In 2005, six vines were excavated at 6500 C degree days. The results showed a higher density of fine roots when sample spacing was closer to the vine trunk at 20, 60, 120 cm from the vine trunk. In 2006, four vines were excavated at winter pruning, budbreak, 3-4 leaves, bloom, veraison, harvest, and post-harvest. Different tissue fractions were measured for biomass and analyzed for C, N, P, K, Ca, Mg, B, Fe, Mn, Cu and Zn. Similar nutrient concentrations between fruiting shoots and vegetative shoots as well as between trunk and cordon throughout the growing season suggests that the most efficient way to sample the whole plant tissues for 2007 was to collect 9 tissue types (woody tissues, canes, coarse roots, fine roots, shoots, leaf blades, petioles, shoot tips and clusters) in parallel growth stages to 2006. The result showed that the seasonal dynamics of nutrient contents, except Fe, Cu and Zn, which highly fluctuated between years, shared a practical pattern: translocation of nutrients from woody tissues to active growing organs at the beginning of season, majority uptake of N, Ca and Mn from soil occurred from bloom to harvest while P, K, Mg and B occurred from bloom to veraison, and restoration of N, P, K, Ca, Mg, B and Mn back to woody tissues occurred after veraison until before leaf fall with no further nutrient uptake. Leaf blade analysis at bloom seems to best to represent vine's nutrient status for fertilizer recommendation since substantial nutrient uptake from the soil occurred after bloom and leaf blades indicate overall status of nutrients.
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Details
- Title
- Uptake and partitioning of mineral nutrients in concord grape
- Creators
- Suphasuk Pradubsuk
- Contributors
- Joan R. Davenport (Chair)Richard T Koenig (Committee Member) - Washington State University, Department of Crop and Soil SciencesRobert G Stevens (Committee Member) - Washington State University, Department of Crop and Soil SciencesMarkus Keller (Committee Member) - Washington State University, Department of HorticultureD. A. Horneck (Committee Member)
- Awarding Institution
- Washington State University
- Academic Unit
- Department of Crop and Soil Sciences
- Theses and Dissertations
- Doctor of Philosophy (PhD), Washington State University
- Publisher
- Washington State University
- Number of pages
- 91
- Identifiers
- 99901055138601842
- Language
- English
- Resource Type
- Dissertation