Ecological data on predators ofParlatoria pergandii on sour orange trees in southern Greece

2001 ◽  
Vol 29 (3) ◽  
pp. 207-214 ◽  
Author(s):  
George J. Stathas
Keyword(s):  
Sour Orange ◽  
Ecological Data ◽  
Orange Trees ◽  
Southern Greece

Growth and yield of orange (Washington Navel 141) grafted on different citrus rootstocks

2020 ◽  
Vol 12 (3) ◽  
Author(s):  
Alaa Suhiel Ibrahim
Keyword(s):  
Soluble Solids ◽  
Growth And Yield ◽  
Sour Orange ◽  
Fresh Weight ◽  
Experimental Station ◽  
Section Area ◽  
Washington Navel ◽  
Orange Trees ◽  
Cleopatra Mandarin ◽  
Troyer Citrange

Abstract. This investigation was conducted during 2014, 2015 and 2016 in the field of the citrus experimental station in Ciano, the general corps of scientific agricultural researches. The growth and yield of orange trees (Washington navel 141) budded on seven citrus rootstocks (Sour orange, Troyer citrange, Carrizo citrange, Citrumelo 4475, Citrumelo 1452, Macrophylla and Cleopatra mandarin) and farmed since 1989 have been studied. The results for the average of yield showed that the trees grafted on Cleopatra mandarin (58.33 kg. tree-1) were significantly superior to those grafted on Macrophylla (34.17 kg. tree-1). Orange trees grafted on Citrumelo 4475 and Citrumelo 1452 were significantly superior to other treatments in trunk section area of the rootstock (922.41 and 841.02 cm2, respectively). The greatest fruit fresh weight was in trees grafted on Citrumelo 4475 (284.85 g. fruit-1) which were significantly superior to those grafted on Carrizo and Troyer citrange (232.49 and 236.06 g. fruit-1, respectively). The biggest total soluble solids (%) was in trees grafted on Carrizo and Troyer citrange (12.83% for both treatments) which were significantly superior to those grafted on Sour orangе and Macrophylla (11.5% for both treatments), while the greatest total acids (%) was by Sour orange (2.08%) without significant differences.

The effect of long-term atmospheric CO2 enrichment on the intrinsic water-use efficiency of sour orange trees

Chemosphere ◽  
2003 ◽  
Vol 50 (2) ◽  
pp. 217-222 ◽  
Author(s):  
S.W. Leavitt ◽  
S.B. Idso ◽  
B.A. Kimball ◽  
J.M. Burns ◽  
A. Sinha ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Co2 Enrichment ◽  
Atmospheric Co2 ◽  
Sour Orange ◽  
Intrinsic Water Use Efficiency ◽  
Use Efficiency ◽  
Orange Trees

Elevated CO2effects on stomatal density of wheat and sour orange trees

1994 ◽  
Vol 45 (11) ◽  
pp. 1665-1668 ◽  
Author(s):  
M. Estiarte ◽  
J. Peñuelas ◽  
B.A. Kimball ◽  
S.B. Idso ◽  
R.L. LaMorte ◽  
...  
Keyword(s):  
Stomatal Density ◽  
Sour Orange ◽  
Orange Trees

scholarly journals Ecological data of Lepidosaphes gloverii (Hemiptera: Diaspididae) in Greece

2017 ◽  
Vol 15 ◽  
pp. 19
Author(s):  
G.J. Stathas
Keyword(s):  
Overlapping Generations ◽  
Ecological Data ◽  
Female Fecundity ◽  
Chilocorus Bipustulatus ◽  
Mass Release ◽  
Infestation Density ◽  
Orange Trees ◽  
Rhyzobius Lophanthae

In June 2001 the scale Lepidosaphes gloverii (Packard) (Hemiptera: Diaspididae) was found on orange trees in Peloponnesus, Gastouni area, (Southwestern Greece). From the day it was first recorded until August 2003 observations on orange trees were held both in field and laboratory, concerning the biology and ecology of this scale. L. gloνerii infests mainly the upper surface of the leaves and the fruits and less the shoots of the tree. During the period April to August 2002 the scale completed 3 overlapping generations. Female fecundity ranged between 32 and 57 eggs. Chilocorus bipustulatus (L.) (Coleoptera: Coccinellidae) and Rhyzobius lophanthae Blaisdell (Coleoptera: Coccinellidae) predators were found to feed upon this scale. In Ju1y 2002 a mass release of those predators took place on infested orange trees. To assess the action of these predators, observations were conducted in both field (by shaking the branches of the trees and counting the number of the predators) and laboratory (by counting the predated scales found on leaves). The release of predators contributed to the decrease of infestation density of trees. C. bipustulatus developed significantly higher populations than R. lophanthae.

Seventeen years of carbon dioxide enrichment of sour orange trees: final results

2007 ◽  
Vol 13 (10) ◽  
pp. 2171-2183 ◽  
Author(s):  
BRUCE A. KIMBALL ◽  
SHERWOOD B. IDSO ◽  
STEPHANIE JOHNSON ◽  
MATTHIAS C. RILLIG
Keyword(s):  
Carbon Dioxide ◽  
Sour Orange ◽  
Carbon Dioxide Enrichment ◽  
Orange Trees
Sign in / Sign up

Export Citation Format

Share Document