A5051839359- Plant Physiology and Cultivation Studies
- Horticultural and Viticultural Research
- Irrigation Practices and Water Management
- Plant Water Relations and Carbon Dynamics
- Diverse Educational Innovations Studies
- Postharvest Quality and Shelf Life Management
- Tree Root and Stability Studies
- Turfgrass Adaptation and Management
- Tree-ring climate responses
- Fermentation and Sensory Analysis
- Plant Disease Management Techniques
- Plant Reproductive Biology
- Plant responses to water stress
- Rangeland and Wildlife Management
- Hydrology and Watershed Management Studies
- Crop Yield and Soil Fertility
- Forest ecology and management
- Garlic and Onion Studies
- Insect-Plant Interactions and Control
- Soil erosion and sediment transport
Colorado State University
1993-2023
Western Colorado University
2012
AgResearch
1994-2002
Plant & Food Research
2000
Massey University
1992-1994
Colorado Mesa University
1993-1994
Daimler and Benz Foundation
1994
University of Bonn
1992-1993
The effect of the carbohydrate supply on fruit set and development inflorescence, from flowering to three weeks after flowering, was investigated using field-grown Sauvignon blanc grapevines (<i>Vitis vinifera</i> L.). Carbohydrate in individual shoots manipulated by leaf removal isolating them parent vine a steam girdle at their bases. Shoots were either not girdled had no leaves removed (control) or with 0, 1, 2, 4, 6, 8, 10, 12 removed. fresh dry weight each remaining internode used as...
Five-year old `Hosui' Asian pear ( Pyrus serotina Rehder) trees growing in drainage lysimeters and trained onto a Tatura trellis were subjected to three different irrigation regimes. Weekly water use (WU) was calculated using the mass-balance approach. Soil-water content of control kept at pot capacity, while deficit applied before [regulated (RDI)] during period rapid fruit growth [late (LDI)]. maintained ≈50% 75% capacity for RDI LDI, respectively. Deficit reduced mean WU LDI by 20%. The...
SummaryWe explored the potential of deficit irrigation (DI) applied at different times during growing season for improving fruit quality and storage 'Braeburn' apple in a commercial orchard. Because DI often reduces size, effects size on were also examined. The treatments were: commercially irrigated control (C), early (EDI) from 63 to 118 d after full bloom (DAFB), late decifit (LDI) DAFB final harvest 201 DAFB. Both EDI LDI improved terms increases in: dry-matter concentration (DMC)...
A split-rooted containerized system was developed by approach grafting two, 1-year-old apple (Malus×domestica Borkh. cv 'Gala') trees to investigate the effect of soil moisture heterogeneity and total content (θv) on tree water relations, gas exchange, leaf abscisic acid (ABA) concentration [ABAleaf]. Four irrigation treatments comprising a 2×2 factorial experiment volume placement were imposed over 30-day period: control (C) [>100% crop evapotranspiration (ETc)] applied both containers;...
Western Colorado’s warm, dry summers and access to mountain river water for irrigation create ideal conditions the growth of wine grapes, specifically cultivars European grape species Vitis vinifera. The largest limiting factor vinifera production is nocturnal temperatures cold enough damage crops, or Low Temperature Injury Events (LTIEs). LTIEs require producers undergo time-and-cost prohibitive venture retraining vines. Eastern Mesa County Colorado has sustained large-scale due area’s...
The design of a type drainage lysimeter, as tested with trees Pyrus serotina Rehder var. culta `Hosui' is described. All lysimeter operations and monitoring irrigation volumes were managed by “multi-tasking” controller/datalogger. It was possible to apply different levels each three sets four random lysimeters. Evapotranspiration (ET) calculated using conservation water equation, differences between inputs outputs corrected for changes in soil-water content. ET ranged 3.3 10.7 liters/tree...
Seasonal water use data are presented for 4-year-old Pyrus serotina Rehder cv. Hosui growing in drainage lysimeters and trained onto a Tatura trellis. Weekly (WU) was calculated using the mass balance approach. For 8 consecutive weeks during late summer, instantaneous WU also measured by compensation heat-pulse technique measuring sap flow. Although good agreement found between two methods 4 after probe installation, discrepancies increased this time. Water highest early to mid-January New...
canopy surface area. The first fruit were harvested 150 dafb. Harvest was based on New Zealand color charts, and picked at grades 3 4. All remaining har- vested 158 From the harvest only, a minimum of 20 per treatment analyzed for quality after 4, 8, 12 weeks storage 0C. Fruit weighed flesh firmness determined two locations skin removal. (380) cut open visually examined disorders. SSC (percent) measured with hand-held re- fractometer samples from outer cortex in equatorial region fruit. At...
Stomatal conductance ( g s ) of `Hosui' Asian pear (Pyrus serotina Rehder) trees growing in lysimeters was characterized for well-watered soil and after brief water deficit. The measures status used to interpret data were soil-water content, leaf potential (ψ l ), instantaneous use (trunk sap flow by the compensation heat-pulse technique). diurnal course range values well-irrigated similar those reported other tree fruit crops. Soil moisture at end a midsummer deficit period 60% lysimeter...