Detecting Bare Spots in Wild Blueberry Fields Using Digital Color Photography

2010 ◽  
Vol 26 (5) ◽  
pp. 723-728 ◽  
Author(s):  
F. Zhang ◽  
Q. U. Zaman ◽  
D. C. Percival ◽  
A. W. Schumann
Keyword(s):  
Color Photography ◽  
Wild Blueberry

Estimation of Wild Blueberry Fruit Yield Using Digital Color Photography

2008 ◽  
Vol 51 (5) ◽  
pp. 1539-1544 ◽  
Author(s):  
Q. U. Zaman ◽  
A. W. Schumann ◽  
D. C. Percival ◽  
R. J. Gordon
Keyword(s):  
Fruit Yield ◽  
Color Photography ◽  
Wild Blueberry

ESTIMATION OF WILD BLUEBERRY FRUIT YIELD USING DIGITAL COLOR PHOTOGRAPHY

2009 ◽  
pp. 57-66
Author(s):  
Q.U. Zaman ◽  
D.C. Percival ◽  
R.J. Gordon ◽  
A.W. Schumann
Keyword(s):  
Fruit Yield ◽  
Color Photography ◽  
Wild Blueberry

Electronic Flash Gastroscopic Color Photography

1959 ◽  
Vol 36 (6) ◽  
pp. 743-748 ◽  
Author(s):  
Ivan C. Keever ◽  
Clifford J. Barborka
Keyword(s):  
Color Photography

Color Photography

1903 ◽  
Vol 55 (1422supp) ◽  
pp. 22787-22787
Author(s):  
William J. Herschel
Keyword(s):  
Color Photography

Temporal Dynamics of the Blueberry Maggot Fly (Diptera: Tephritidae) and its Primary Parasitoid, Biosteres melleus (Hymenoptera: Braconidae), in the Maine Wild Blueberry System

2019 ◽  
Vol 113 (2) ◽  
pp. 720-730 ◽  
Author(s):  
Francis A Drummond ◽  
Judith A Collins
Keyword(s):  
Predictive Model ◽  
Stable Equilibrium ◽  
Temporal Dynamics ◽  
Equilibrium Dynamics ◽  
Rhagoletis Mendax ◽  
Parasitism Rates ◽  
Blueberry Maggot Fly ◽  
Rates Of Growth ◽  
Wild Blueberry ◽  
Insecticide Sprays

Abstract Between 1998 and 2017, we conducted studies in wild blueberry, Vaccinium angustifolium Aiton (Ericales: Ericaceae), to elucidate the temporal dynamics of the blueberry maggot fly, Rhagoletis mendax Curran, and its parasitoid, Biosteres melleus (Gahan). A predictive model for the emergence of R. mendax was validated at two sites over 3 yr. A second predictive model for the major parasitoid, B. melleus, of R. mendax was constructed and suggests that the delay in emergence of the parasitoid relative to its host provides a period or ‘biological window’ of 9 d where insecticide sprays can be applied to manage R. mendax with a limited impact on the parasitoid. A 20-yr study on the parasitoid/host dynamics showed parasitism rates ranging from 0.5 to 28.2%. It appears that R. mendax populations in Maine wild blueberry are characterized by stable equilibrium dynamics, significantly affected by stochastic processes. There was a weak, but significant relationship between B. melleus density and R. mendax intrinsic rates of growth. Our data suggest that R. mendax population dynamics in wild blueberry is characterized by an unstable equilibrium tipping point of 7.9 maggots per liter of blueberries or an average of 10 flies per trap.

Resolution for color photography

2006 ◽  
Author(s):  
Paul M. Hubel ◽  
Markus Bautsch
Keyword(s):  
Color Photography
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