Deciduous Fruit Tree Cultivars for Tropical and Sub-Tropical Regions

Kew Bulletin ◽  
1977 ◽  
Vol 31 (4) ◽  
pp. 857
Author(s):  
P. S. Green ◽  
H. C. Ruck
Keyword(s):  
Fruit Tree ◽  
Tropical Regions ◽  
Deciduous Fruit ◽  
Deciduous Fruit Tree

IPM case studies: deciduous fruit tree aphids.

2017 ◽  
pp. 632-642
Author(s):  
S. Barbagallo ◽  
G. E. M. Cocuzza ◽  
P. Cravedi ◽  
S. Komazaki
Keyword(s):  
Case Studies ◽  
Fruit Tree ◽  
Deciduous Fruit ◽  
Deciduous Fruit Tree

scholarly journals Abscisic Acid as a Defoliant for Deciduous Fruit Tree Nursery Stock

HortScience ◽  
1997 ◽  
Vol 32 (3) ◽  
pp. 474B-474
Author(s):  
Fenton E Larsen ◽  
Stewart S. Higgins
Keyword(s):  
Abscisic Acid ◽  
Foliar Spray ◽  
Fruit Tree ◽  
Growth Responses ◽  
Trunk Diameter ◽  
Chemical Treatments ◽  
Tree Nursery ◽  
Nursery Stock ◽  
Deciduous Fruit ◽  
Deciduous Fruit Tree

Artificial defoliation of deciduous fruit tree nursery stock is often necessary so that plants can be dug early enough to escape inclement fall weather. In this research, we assessed the efficacy of abscisic acid (ABA) as a defoliant. ABA was applied as a foliar spray at one of three concentrations—500, 1000, or 2000 ppm a.i. Trees were sprayed either once or twice for a total of six chemical treatments, plus untreated controls. The defoliation and growth responses of eight cultivars were evaluated with the cooperation of commercial nurseries in Washington State. While all treatments caused significantly greater defoliation than was observed in untreated trees, ABA at 500 ppm applied once or twice, or 1000 ppm applied only once, was generally sufficiently effective only on `Bartlett', `Gibson Golden Delicious', and `Law Red Rome', but not on `Imperial Gala', `Scarlet Spur Delicious', `Granny Smith', `Braeburn', or `Red Fuji'. Single or double applications of 2000 ppm or double applications of 1000 ppm often produced faster defoliation than double applications of 500 ppm, but defoliation was not always superior after 4 weeks. No pre-digging field damage was noted, but some treatments appeared to reduce trunk diameter increase after replanting, with no consistent trends among cultivars, except with `Bartlett' pear, which was frequently negatively affected. ABA appears to be very promising as a nursery tree defoliant.

scholarly journals Abscisic Acid as a Potential Deciduous Fruit Tree Nursery Stock Defoliant

1998 ◽  
Vol 8 (1) ◽  
pp. 47-51
Author(s):  
Fenton E. Larsen ◽  
Stewart S. Higgins
Keyword(s):  
Abscisic Acid ◽  
Pyrus Communis ◽  
Fruit Tree ◽  
Commercial Use ◽  
Nursery Stock ◽  
Golden Delicious ◽  
Deciduous Fruit ◽  
Deciduous Fruit Tree ◽  
Nursery Trees ◽  
Application Protocols

Abscisic acid (ABA) was tested as a defoliant for nursery trees of `Bartlett' pear (Pyrus communis L.) and the apple (Malus×domestica Borkh.) cultivars Imperial Gala, Gibson Golden Delicious, Scarlet Spur Delicious, Law Red Rome, Granny Smith, Braeburn, and Red Fuji. ABA was sprayed once or twice, with 1 intervening week, at 500, 1000, or 2000 ppm. Percentage defoliation was assessed at 1-week intervals for 4 weeks. For all cultivars, two applications of 2000 ppm ABA ranked among the most effective treatments for rapid defoliation; this treatment led to at least 95% defoliation for all cultivars. For many cultivars, however, other treatments caused similar defoliation percentages by digging time. All tested cultivars were effectively defoliated (>80%) by two 1000-ppm applications ABA or one 2000-ppm application. One or two 500-ppm applications effectively defoliated `Bartlett', `Gibson Golden Delicious', and `Law Red Rome'. Nursery managers, therefore, need to consider a range of ABA concentrations and alternative application protocols to obtain optimum benefit from ABA. Although ABA shows promise as a defoliant, it lacks government approval for commercial use.

scholarly journals Distribution, Population Dynamics, and Characteristics of Ice Nucleation-Active Bacteria in Deciduous Fruit Tree Orchards †

1983 ◽  
Vol 46 (6) ◽  
pp. 1370-1379 ◽  
Author(s):  
Dennis C. Gross ◽  
Yvonne S. Cody ◽  
Edward L. Proebsting ◽  
Gary K. Radamaker ◽  
Robert A. Spotts
Keyword(s):  
Population Dynamics ◽  
Ice Nucleation ◽  
Fruit Tree ◽  
Deciduous Fruit ◽  
Deciduous Fruit Tree ◽  
Active Bacteria

Morpho‐physiological Approaches to Investigate Lime‐Induced Chlorosis in Deciduous Fruit Tree Species

2003 ◽  
Vol 26 (10-11) ◽  
pp. 2277-2294 ◽  
Author(s):  
Fabrizio Cinelli ◽  
Marco Fisichella ◽  
Rosario Muleo
Keyword(s):  
Tree Species ◽  
Fruit Tree ◽  
Deciduous Fruit ◽  
Deciduous Fruit Tree
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