D. R. Edwards

Ambrose University

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Norman C. Leppla

University of Florida

W. A. Dickerson

North Carolina Department of Agriculture and Consumer Services

David L. Ehret

Agriculture and Agri-Food Canada

Peter A. Jolliffe

University of British Columbia

Tom Helmer

Agriculture and Agri-Food Canada

A. Liptay

Agriculture and Agri-Food Canada

Paul Galpern

University of Calgary

Katherine R. Baylis

University of Illinois Urbana-Champaign

Martine Dorais

Université Laval

Robert H. Bradley

University of Arkansas at Little Rock

Cooperative Institutions

Agriculture and Agri-Food Canada

University of British Columbia

Agricultural Research Service

Chinese Academy of Sciences

University of Calgary

Université Laval

Summerland Research and Development Centre

Institute of Genetics and Developmental Biology

University of Arkansas at Fayetteville

University of Arkansas for Medical Sciences

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SECTION IV LIST OF CONTACTS

SPIE eBooks (1987)

D. R. Edwards Norman C. Leppla W. A. Dickerson

Section (typography)

10.4182/xxsg1126.9.38

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Citations (0)

SECTION I ARTHROPODS LISTED BY SCIENTIFIC NAME

SPIE eBooks (1987)

D. R. Edwards Norman C. Leppla W. A. Dickerson

Section (typography)

10.4182/xxsg1126.9.1

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Temporal variations of starch and mass in greenhouse tomato leaves under CO₂ enrichment

Canadian Journal of Plant Science (2011)

D. R. Edwards David L. Ehret Peter A. Jolliffe

Edwards, D., Ehret, D. and Jolliffe, P. 2011. Temporal variations of starch and mass in greenhouse tomato leaves under CO 2 enrichment. Can. J. Plant Sci. 91: 167–177. A plant-based method of guiding CO 2 dosing may improve the effectiveness of CO 2 enrichment in commercial greenhouse tomato (Lycopersicon esculentum Mill) production. The temporal dynamics of two plant response indicators, leaf starch and leaf mass per unit area (LMA) were investigated in commercial and research greenhouses throughout day/night periods, as well as after the onset of CO 2 enrichment. Both leaf starch and LMA tended to follow the diurnal profile of light but with 3 to 4 h of lag. The magnitude of the response, especially for starch, was affected by leaf position, CO 2 enrichment and light. The highest starch contents were measured between 1400 and 1600 and the lowest levels occurred in the morning between sunrise and 1100. In many cases plants carried over substantial starch in upper leaves from one day to the next, indicating a carbon-surplus state. In the onset experiment leaf starch and LMA increased with 4 d of exposure to CO 2 enrichment for mid and upper canopy leaves and continued to increase to the end of the monitoring period (7 d). Leaf starch contents and LMA are indicators of plant carbon status that show potential for guiding CO 2 dosing.

Lycopersicon

10.4141/cjps09185

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Citations (4)

Canopy profiles of starch and leaf mass per area in greenhouse tomato and the relationship with leaf area and fruit growth

Scientia Horticulturae (2010)

D. R. Edwards Peter A. Jolliffe David L. Ehret

10.1016/j.scienta.2010.05.019

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Citations (14)

Non-crop sources of beneficial arthropods vary within-season across a prairie agroecosystem

Agriculture Ecosystems & Environment (2021)

Samuel V.J. Robinson D. R. Edwards Jess Vickruck Lincoln R. Best Paul Galpern

Agroecosystem

Overwintering

Growing season

10.1016/j.agee.2021.107581

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Citations (9)

SECTION II ARTHROPODS LISTED BY COMMON NAME

SPIE eBooks (1987)

D. R. Edwards Norman C. Leppla W. A. Dickerson

Section (typography)

10.4182/xxsg1126.9.15

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Tomato Seedling Growth in Response to Variation in Root Container Shape

HortScience (1994)

A. Liptay D. R. Edwards

Roots of tomato (Lycopersicon esculentum Mill.) seedlings grown in multicelled trays were confined largely to the interface between the growing medium and the inner surface of the cell. Because of the predominance of roots in this area, experiments were done in prototype cells to relate seedling growth to change in this interface area while retaining a constant volume. The cell shapes that were tested included a square cell with 1.36-cm sides and other rectangular cells. All cells were 3 cm in height, but widths decreased incrementally by 0.1 cm from the 1.36×1.36-cm square to rectangles with inner cell dimensions of 0.36×5.14 cm. With these changing shapes, the interface area increased but cell width decreased to a more narrow cell. Seedling height increased as the cell shape was changed from a square (1.36 × 1.36 cm) to an elongated rectangle (1.74 × 1.06 cm). More narrow cells caused seedling height to decrease; the shortest seedlings occurred in 0.36 × 5.14-cm cells. Root growth was unaffected by change in cell shape. The smoothness of the inner cell surface, however, affected root growth; a rough texture resulted in stubby and reduced root growth but had no effect on shoot growth.

Lycopersicon

10.21273/hortsci.29.6.633

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Citations (10)

Towards a plant-based method of guiding CO₂ enrichment in greenhouse tomato

D. R. Edwards

10.14288/1.0066866

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Citations (1)

CARBON STATUS OF CO2-ENRICHED TOMATO PLANTS UNDER COMMERCIAL GREENHOUSE CONDITIONS

Acta Horticulturae (2004)

D. R. Edwards Peter A. Jolliffe David L. Ehret