TRAP DESIGNS FOR MONITORING EMERGENCE OF FRANKLINIELLA BISPINOSA (MORGAN) (THYSANOPTERA: THRIPIDAE) FROM SOIL IN CITRUS GROVES

1993 ◽  
Vol 125 (3) ◽  
pp. 449-456
Author(s):  
C.C. Childers
Keyword(s):  
Navel Orange ◽  
Citrus Grove ◽  
Shell Vial ◽  
Wooden Frame ◽  
Emergence Trap ◽  
Citrus Groves ◽  
Orange Trees ◽  
Trap Placement ◽  
Citrus Trees

AbstractThree emergence trap designs were evaluated for effectiveness in collecting adult Frankliniella bispinosa (Morgan) (Thysanoptera: Thripidae) from beneath and between citrus trees in Florida. Trap A [a wooden-frame 30- by 30-cm (= 900 cm2) square trap with removable Plexiglas® lid coated with Tangle-Trap® adhesive] was effective in trapping F. bispinosa adults whereas trap B [a polyvinylchloride (PVC) round trap with a centered 3.7-mL capacity shell vial] was ineffective. Trap A was as effective in collecting emerging F. bispinosa adults as trap C [a PVC round trap with a 30-cm-diameter (= 706.5 cm2) removable adhesive-coated Plexiglas lid]. Comparative costs for trap construction, maintenance, and insect counting are all higher for trap A compared with trap C. Trap placement beneath citrus trees 15 cm from the trunk or just inside the dripline of the canopy provided similar thrips catches in two citrus grove sites. Both interior and dripline trap positions beneath "navel" orange trees had significantly higher numbers of F. bispinosa than did traps exposed within rows between these trees.

scholarly journals Sweet orange trees grafted on selected rootstocks fertilized with nitrogen, phosphorus and potassium

2004 ◽  
Vol 39 (1) ◽  
pp. 55-60 ◽  
Author(s):  
José Antônio Quaggio ◽  
Dirceu Mattos Junior ◽  
Heitor Cantarella ◽  
Eduardo Sanches Stuchi ◽  
Otávio Ricardo Sempionato
Keyword(s):  
Poncirus Trifoliata ◽  
Tree Planting ◽  
Rangpur Lime ◽  
Yield Efficiency ◽  
Citrus Groves ◽  
Canopy Volume ◽  
Phosphorus And Potassium ◽  
Orange Trees ◽  
Low K ◽  
Citrus Trees

The majority of citrus trees in Brazil are grafted on 'Rangpur lime' (Citrus limonia Osb.) rootstock. Despite its good horticultural performance, search for disease tolerant rootstock varieties to improve yield and longevity of citrus groves has increased. The objective of this work was to evaluate yield efficiency of sweet oranges on different rootstocks fertilized with N, P, and potassium. Tree growth was affected by rootstock varieties; trees on 'Swingle' citrumelo [Poncirus trifoliata (L.) Raf. × C. paradisi Macf.] presented the smallest canopy (13.3 m³ in the fifth year after tree planting) compared to those on 'Rangpur lime' and 'Cleopatra' mandarin [C. reshni (Hayata) hort. ex Tanaka] grown on the same grove. Although it was observed an overall positive relationship between canopy volume and fruit yield (R² = 0.95**), yield efficiency (kg m-3) was affected by rootstocks, which demonstrated 'Rangpur lime' superiority in relation to Cleopatra. Growth of citrus trees younger than 5-yr-old might be improved by K fertilization rates greater than currently recommended in Brazil, in soils with low K and subjected to nutrient leaching losses.

scholarly journals Elevated Microsprinklers Improve Protection of Citrus Trees in an Advective Freeze

HortScience ◽  
1991 ◽  
Vol 26 (9) ◽  
pp. 1149-1151 ◽  
Author(s):  
Larry R. Parsons ◽  
T. Adair Wheaton ◽  
Nick D. Faryna ◽  
John L. Jackson
Keyword(s):  
Citrus Sinensis ◽  
Navel Orange ◽  
Orange Trees ◽  
Canopy Size ◽  
Citrus Trees

The severe advective freeze of 23-26 Dec. 1989 killed most nonprotected trees in Florida's northern citrus region. Minimum temperatures reached - 8.3C with >43 hours below freezing. Microsprinklers elevated to a height of 0.6 or 0.9 m and placed inside the canopy of young `Hamlin' and navel orange trees [Citrus sinensis (L.) Osb.] provided excellent protection to heights well above 1 m. Initial survival height of trees with emitters elevated to 0.9 m was higher than has been reported for microsprinklers at a conventional 0.2-m height in earlier severe freezes. Trees rapidly approached prefreeze canopy size from regrowth of the protected scaffold branches. Six months after the freeze, trees protected by microsprinklers elevated to 0.6 m and delivering 26 or 47 liters·hour-1 had regrown to a height of 1.4 or 1.7 m, respectively. Trees with microsprinklers at a height of 0.9 m and delivering 101 liters·hour -1 had regrown to a height of 2.5 m. Trees with no microsprinkler irrigation were killed to the ground. Twelve months after the freeze, trees with elevated microsprinklers were still significantly taller and showed greater recovery than those with microsprinklers near the ground.

Relative Abundance of Frankliniella bispinosa and Other Species of Thysanoptera Emerging from Soil Beneath ‘Navel’ Orange Trees in Florida During Spring Flowering

1994 ◽  
Vol 29 (3) ◽  
pp. 318-329 ◽  
Author(s):  
C. C. Childers ◽  
S. Nakahara ◽  
R. J. Beshear
Keyword(s):  
Relative Abundance ◽  
Abundant Species ◽  
Navel Orange ◽  
Central Florida ◽  
Southwest Florida ◽  
The Family ◽  
Emergence Traps ◽  
Orange Trees ◽  
Citrus Trees

Sixteen species of thrips in three families were identified from slide-mounted specimens collected from emergence traps placed beneath and between citrus trees in southwest and central Florida between 1989 and 1992. Species in the family Thripidae included: Chirothrips spiniceps (Hood), Frankliniella bispinosa (Morgan), F. kelliae Sakimura, Microcephalothrips abdominalis (D. L. Crawford), Scirtothrips sp., and Scolothrips pallidus (Beach); in the family Aeolothripidae: Stomatothrips crawfordi Stannard; and the family Phlaeothripidae: Adraneothrips decorus Hood, Aleurodothrips fasciapennis (Franklin), Eurythrips sp., Haplothrips gowdeyi (Franklin), Hoplandrothrips raptor (Crawford), Hoplothrips marginalis (Hood), Leptothrips cassiae Hood, L. macroocellatus Watson, and Nesothrips lativentris (Karny). F. bispinosa was the most abundant species comprising 84 to 99% of the thrips collected from emergence traps. F. kelliae was the second most abundant species with frequencies ranging from 3 to 12% in Lee and Hendry counties. No propupal or pupal stages of Frankliniella spp. were recovered from ground traps placed beneath the dripline of navel orange trees during flowering cycles at either location in southwest Florida. Only first and second instars and adults of F. bispinosa were collected from the ground traps.

2016 Planting and Annual Cultural Maintenance Costs for Reset-Replacement Trees in a Florida Citrus Grove

EDIS ◽  
2016 ◽  
Vol 2016 (7) ◽  
Author(s):  
Marina Burani Arouca ◽  
Stephen Hubbard Futch ◽  
Ariel Singerman
Keyword(s):  
Citrus Grove ◽  
Maintenance Costs ◽  
Cultural Maintenance ◽  
Florida Citrus ◽  
Citrus Trees

We provide estimates for the costs of planting and maintaining reset citrus trees in Florida in the era of HLB, The estimates are useful as a benchmark but also to inform industry stakeholders and policymakers regarding the costs growers have to incur in when planting new trees.

Effect of transmission of exocortis dwarfing factors into Washington navel orange trees

1975 ◽  
Vol 15 (72) ◽  
pp. 136 ◽  
Author(s):  
MC Stannard ◽  
JC Evans ◽  
JK Long
Keyword(s):  
High Density ◽  
Normal Density ◽  
Navel Orange ◽  
Trifoliate Orange ◽  
Four Seasons ◽  
Washington Navel ◽  
Area Basis ◽  
Early Production ◽  
Orange Trees

Washington navel orange trees on trifoliate orange rootstocks were inoculated at various ages with budwood from either severely dwarfed Washington navel trees with butt scaling caused by exocortis virus or moderately dwarfed Marsh grapefruit trees with no butt scaling. Dwarfing, measured by trunk girth, became apparent four seasons after inoculation, the butt scaling inoculum causing more pronounced dwarfing than the non-scaling inoculum. For both inocula, trees inoculated in the nursery were the most dwarfed, and yielded least, with trees inoculated in the field one, two, three or five years later being successively less dwarfed and high yielding. In a second experiment, Washington navel orange trees on trifoliate orange, which were carrying exocortis virus or were inoculated with it either in the nursery or later in the field, were planted in 1962 at a density of 835 ha-1. The field inoculated trees subsequently grew larger than the others. All were more dwarfed but yielded more heavily on a ground area basis during five years of cropping than exocortis-free trees planted at a normal density of 222 ha-1. Dwarfed trees developed butt scaling symptoms and periodically became unthrifty. The non-scaling form of dwarfing lends itself to the development of high density plantings of small trees with consequent benefits in management and high early production

Possible Methods to Increase Efficacy of Gibberellic Acid Applied to Navel Orange Trees

2018 ◽  
pp. 567-572
Author(s):  
Charles W. Coggins ◽  
Gilbert L. Henning ◽  
Michael F. Anthony
Keyword(s):  
Gibberellic Acid ◽  
Navel Orange ◽  
Orange Trees

scholarly journals EFFECT OF ENRICHED COMPOST TEA ON WASHINGTON NAVEL ORANGE TREES

2009 ◽  
Vol 34 (10) ◽  
pp. 10085-10094
Author(s):  
M. Mostafa ◽  
M. El-Boray ◽  
A. Abd El-Wahab ◽  
R. Barakat
Keyword(s):  
Navel Orange ◽  
Compost Tea ◽  
Washington Navel ◽  
Orange Trees
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