Flow over a hill covered with a plant canopy

2004 ◽  
Vol 130 (596) ◽  
pp. 1-29 ◽  
Author(s):  
J. J. Finnigan ◽  
S. E. Belcher
Keyword(s):  
Plant Canopy ◽  
Flow Over A Hill

Effect of High Temperatures on the Postharvest Flowering of Specialty Floral Crop Species

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 447f-448
Author(s):  
Millie S. Williams ◽  
Terri Woods Starman ◽  
James E. Faust
Keyword(s):  
United States ◽  
Heat Tolerance ◽  
Flower Development ◽  
Consumer Satisfaction ◽  
The United States ◽  
Plant Canopy ◽  
Flower Number ◽  
Flower Bud ◽  
Crop Species ◽  
Mature Flower

Flower growers experience decreased consumer satisfaction with plant species that cease flowering during the summer. The objective of this experiment was to characterize the heat tolerance of four specialty floral crop species in order to predict their summer performance in the different climatalogical regions of the United States. The effect of increasing temperatures on the duration of postharvest flower development was determined for Ageranthemum frutescens `Butterfly' and `Sugar Baby', Brachycome hybrid `Ultra', and Sutera cordata `Snowflake'. Plants were grown in a 18 °C greenhouse until marketable with foliage covering the container and flowers distributed evenly across the plant canopy. Plants were then placed in a phytotron to determine their heat tolerance. Temperature set points of 18, 23, 28, and 33 °C were delivered serially at 2-week intervals, starting at 18 °C. Plants were then returned to 18 °C after the 33 °C treatment. Immature flower bud, mature flower bud, flower and senesced flower numbers were collected once per week. Sutera `Snowflake', and Brachycome `Ultra' had the greatest flower number at the 23 °C temperature, decreasing in the 28 °C environment. Argeranthemum `Butterfly' and `Sugar Baby' had greatest flower number at 28 °C, but flowers were smaller and of lower quality than at 23 °C. Flower development of all cultivars ceased at 33 °C, but when plants were returned to the 18 °C production greenhouse, flower development resumed. According to normal average daily temperatures in Knoxville, Tenn., Ageranthemum frutescens `Butterfly' and `Sugar Baby' would flower until mid-June, while Brachycome hybrid `Ultra' and Sutera cordata `Snowflake' would flower until mid-May.

Identification of Fruit Existence in Plant Canopy

1997 ◽  
Vol 30 (11) ◽  
pp. 1685-1688
Author(s):  
S. Oke ◽  
M. Ookado ◽  
Y. Nakamura
Keyword(s):  
Plant Canopy

scholarly journals Response of Nagpur mandarin (Citrus reticulata Blanco) to high density planting systems

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
M. S. Ladaniya ◽  
R. A. Marathe ◽  
A. A. Murkute ◽  
A. D. Huchche ◽  
A. K. Das ◽  
...  
Keyword(s):  
Plant Density ◽  
High Density ◽  
Citrus Reticulata ◽  
Plant Canopy ◽  
Area Index ◽  
Rangpur Lime ◽  
Net Returns ◽  
Area Basis ◽  
Crop Harvest ◽  
Major Nutrients

AbstractHigh density planting system i.e. accommodating a higher number of plants than routine in a given area is an innovative agro-technology to increase yield and thereby early net returns. Due to conventional wide spacing plantation in Nagpur mandarin (Citrus reticulata Blanco), the land remains unutilized as the plant canopy gradually increases over the years. In the present study, Nagpur mandarin (Citrus reticulata Blanco) budded on Rangpur lime rootstock was evaluated under six different planting spacings. It was observed that the organic carbon (1.10–1.82%) and major nutrients viz. N (309–430 kg ha−1), P (20–54 kg ha−1) and K (291–810 kg ha−1) increased vis-à-vis plant density and was highest under 2 × 2 m spacing. Plants were tallest at 2 × 2 m spacing with the higher PAR interception (88.2) and the lowest leaf area index (1.09). Fruit yield on area basis, under 2 × 2 m spacing was 26, 7.1, 4.6 times more as compared to conventional plantation during the first, second and third year, respectively. At fifth year of crop harvest, the highest B:C ratio (6.36) was recorded in 6 × 3 m followed by 4 × 2 m and 2 × 2 m.

Measuring plant canopy structure

1985 ◽  
Vol 18 (3) ◽  
pp. 281-294 ◽  
Author(s):  
V.C. Vanderbilt
Keyword(s):  
Canopy Structure ◽  
Plant Canopy

Non-uniform vertical nitrogen distribution within plant canopy and its estimation by remote sensing: A review

2013 ◽  
Vol 142 ◽  
pp. 75-84 ◽  
Author(s):  
Heli Li ◽  
Chunjiang Zhao ◽  
Wenjiang Huang ◽  
Guijun Yang
Keyword(s):  
Remote Sensing ◽  
Plant Canopy ◽  
Nitrogen Distribution

scholarly journals Waving plants and turbulent eddies

2010 ◽  
Vol 652 ◽  
pp. 1-4 ◽  
Author(s):  
J. J. FINNIGAN
Keyword(s):  
Three Dimensional ◽  
Large Eddy Simulations ◽  
Plant Canopy ◽  
Turbulent Eddies ◽  
Plant Canopies ◽  
Large Eddy ◽  
Flexible Plant ◽  
Paradoxical Results

New large-eddy simulations of flow over a flexible plant canopy by Dupont et al. (J. Fluid Mech., 2010, this issue, vol. 652, pp. 5–44) have produced apparently paradoxical results. Work over the last three decades had suggested that turbulent eddies could ‘lock onto’ to the waving frequency of uniform cereal canopies. Their new simulations contradict this view, although a resolution may lie in the essentially three-dimensional nature of the instability process that generates the dominant eddies above plant canopies.

Indirect sensing of plant canopy structure with simple radiation measurements

1988 ◽  
Vol 42 (2-3) ◽  
pp. 255-278 ◽  
Author(s):  
Steven G. Perry ◽  
Alistair B. Fraser ◽  
Dennis W. Thomson ◽  
John M. Norman
Keyword(s):  
Canopy Structure ◽  
Plant Canopy ◽  
Radiation Measurements

scholarly journals Within plant distribution of Anthonomus grandis (Coleoptera: Curculionidae) feeding and oviposition damages in cotton cultivars

2013 ◽  
Vol 37 (1) ◽  
pp. 78-84 ◽  
Author(s):  
José Fernando Jurca Grigolli ◽  
Leandro Aparecido de Souza ◽  
Diego Felisbino Fraga ◽  
Marina Funichello ◽  
Antonio Carlos Busoli
Keyword(s):  
Vertical Distribution ◽  
Oviposition Behavior ◽  
Boll Weevil ◽  
Plant Distribution ◽  
Anthonomus Grandis ◽  
Plant Canopy ◽  
In The Beginning ◽  
The Vertical Distribution ◽  
Adequate Management

The feeding and oviposition behavior of boll weevil in new cotton cultivars is essential for an adequate management. The objective of this study was to evaluate the vertical distribution of squares punctured for feeding and oviposition of the pest in the cultivars NuOPAL, DeltaOPAL, FMT-701, FMX-910 and FMX-993, and record the most and least preferred times of feeding and oviposition. The number of squares used for boll weevil feeding and oviposition were evaluated weekly in three parts of plant canopy. It was observed that, regardless the cultivar, A. grandis preferred to lay eggs in squares located in the upper part and feed on squares in the middle and upper parts. The boll weevil preferred to feed on cultivar FMT-701 in the beginning of the period of cotton flowering and fruiting, and the cultivars NuOPAL, DeltaOPAL, FMX-910 and FMX-993 throughout the whole period of flowering and fruiting. A. grandis preferred to lay eggs on cultivars NuOPAL, FMT-701 and FMX-993 at the beginning and end of flowering and fruiting of plants, while the cultivars DeltaOPAL and FMX-910 are used for oviposition throughout the period of flowering and fruiting.

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