scholarly journals Elm Growth and Japanese Beetle Damage on Selected Cultivars

HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 812C-812
Author(s):  
W.T. Witte ◽  
R.J. Sauve ◽  
P.C. Flanagan
Keyword(s):  
Drip Irrigation ◽  
Height Growth ◽  
Single Plant ◽  
Japanese Beetle ◽  
Annual Increment ◽  
Poor Growth ◽  
Beetle Damage ◽  
Heavy Infestation

Ten single plant replications of 11 taxa were planted 6 May 1994, fertilized regularly, and maintained under drip irrigation. Japanese beetle damage became apparent in mid-June. Sevin SL at 1 qt/100 gal was applied with a tractor-mounted mist blower on 22 June, and 7 and 19 July. Data on Japanese beetle populations were recorded using an arbitrary scale of 0 (no beetles) to 10 (heavy infestation). Damage on each tree was recorded using an arbitrary scale of 0 (no damage) to 10 (completely skeletonized). The annual increment in height and caliper growth was recorded for each tree in Fall 1994. Ulmus japonica and U. glabra `Pendula' had the most height growth (>60 cm increment) but were not significantly different from most other accessions, while NA 60070, U. crassifolia, and NA 60071 had significantly slower growth than the former group(<25 cm increment). Japanese beetles fed first on U. carpinifolia `Variegata', NA 60071, and 60070, skeletonizing most of the new growth before the first Sevin application, resulting in the most damage. This may have resulted in poor growth of the USDA/NA selections in 1994.

scholarly journals Fastest Growing Oaks in Species/Cultivars Trials at TSU-NCRS, McMinnville, Tenn.

HortScience ◽  
1996 ◽  
Vol 31 (4) ◽  
pp. 660f-660
Author(s):  
W.T. Witte ◽  
R.J. Sauve ◽  
P.C. Flanagan
Keyword(s):  
Drip Irrigation ◽  
Growth Increment ◽  
Height Growth ◽  
Single Plant ◽  
Growing Seasons ◽  
Species Hybrids

Eighty-one accessions of oak species, hybrids, and cultivars from commercially available sources were established at TSU-NCRS in Fall 1993 and Spring 1994, using 10 single-plant replications in a randomized complete block. Drip irrigation was begun on a regular basis May 1994, and plants were fertilized regularly. Height and diameter was recorded Fall 1994 and 1995. Fastest growing oaks in order of cm height growth increment over the two growing seasons were nigra, phellos, texana nuttalli, cerris, macrocarpa, falcata pagodaefolia, macrocarpa `Maximus', acutissima, austrina, shumardii, muehlenbergi, falcata, robur fastigiata, lyrata, virginiana, palustris, acutissima `Gobbler', glandulifera, macrocarpa `Ashworth', gambelli ×macrocarpa, alba. Most evergeen oaks did not survive Winter 1995–96, and data will be reported on winterkill.

scholarly journals Growth of Silver Maple and Boxelder Taxa in Tennessee

HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 812D-812
Author(s):  
W.T. Witte ◽  
R.J. Sauve ◽  
P.C. Flanagan
Keyword(s):  
Drip Irrigation ◽  
Height Growth ◽  
Early Summer ◽  
Single Plant ◽  
Growth Data ◽  
Acer Saccharinum ◽  
Intermediate Data ◽  
Silver Maple

Several commercially available Acer saccharinum and A. negundo taxa were established with 10 single-plant replications in a cultivar trial at the TSU–NCRS in 1993 and 1994. Each plant was fertilized in spring and early summer with 100 gm 15–15–15 beginning Summer 1993. Drip irrigation was applied as needed beginning Summer 1993. Vegetation within tree rows was controlled with preemergent and postemergent herbicides, while grassed middles were mowed. Growth data were recorded in Fall 1993 and 1994 and height and caliper increment calculated for the 1994 season. In the silver maple group with most height growth were: `Silver Queen', `Skinneri', and `Silver Pyramid'. These differed significantly from a group of four slower growing cultivars. Cultivars with the most height growth also had the most caliper growth. Seedling boxelder grew faster than one accession of `Flamingo', while three other cultivars were intermediate. Data will also be presented on insect and disease ratings.

scholarly journals Growth of Sugar Maple Taxa in Tennessee

HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 812E-812
Author(s):  
W.T. Witte ◽  
R.J. Sauve ◽  
P.C. Flanagan
Keyword(s):  
Drip Irrigation ◽  
Related Species ◽  
Acer Saccharum ◽  
Sugar Maple ◽  
Height Growth ◽  
Single Plant ◽  
Growth Data ◽  
Closely Related Species ◽  
Group Of Seven

Commercially available Acer saccharum cultivars, and some closely related species accessions (floridanum, leucoderme, macrophyllum, and nigrum `Greencolumn'), were established as 10 single-plant replications in a cultivar trial at the TSU–NCRS in 1993 and Spring 1994. Plants were regularly fertilized and drip irrigation was begun Summer 1993. Growth data were recorded each fall and height and caliper increment calculated for the 1994 season. In the group with most height growth were: `Bonfire', `Majesty', nigrum `Greencolumn', leucoderme, `Sweet Shadow', `Fairview', and macrophyllum. These, except for `Fairview' and macrophyllum, differed significantly from a group of seven slower growing cultivars. With some exceptions, cultivars with the most height growth tended to have the most caliper growth, while those with the least height growth tended to have the least caliper growth. Data will also be presented on insect and disease ratings.

scholarly journals Growth of Norway and Sycamore Maple Taxa in Tennessee

HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 812F-812
Author(s):  
W.T. Witte ◽  
R.J. Sauve ◽  
P.C. Flanagan
Keyword(s):  
Drip Irrigation ◽  
Height Growth ◽  
Single Plant ◽  
Growth Data ◽  
Sycamore Maple

Commercially available Norway and sycamore maple taxa were established as 10 single-plant replications in a cultivar trial at the TSU–NCRS in 1993 and Spring 1994. Each plant was fertilized regularly and drip irrigation was begun Summer 1993. Vegetation within tree rows was controlled with preemergent and postemergent herbicides, while grassed middles were mowed. Growth data was recorded in Fall 1993 and 1994 and height and caliper increment calculated for the 1994 season. In this group of 29 taxa, 9 cultivars were in the group with most height growth: `Columnare', `Pond', `Deborah', `Crystal', `Parkway', `Columnarbroad', `Schwedleri', `Summershade', and `Fairview'. With some exceptions, cultivars with the most height growth tended to have the most caliper growth, while those with the least height growth tended to have the least caliper growth, with the notable exception of `Columnar'. Data will also be presented on insect and disease ratings.

Identification and Management of Clustered Pellitory (Parietaria praetermissa) in Citrus Groves

EDIS ◽  
2019 ◽  
Vol 2019 (5) ◽  
pp. 3
Author(s):  
Ramdas Kanissery ◽  
Biwek Gairhe ◽  
Brent Sellers ◽  
Steve Futch
Keyword(s):  
Drip Irrigation ◽  
Early Summer ◽  
Irrigation Systems ◽  
Spray Pattern ◽  
Citrus Groves ◽  
Low Volume ◽  
Florida Citrus ◽  
Heavy Infestation

In Florida, clustered pellitory is becoming a troublesome weed for citrus, especially from the winter through early summer. Inadequate management of this weed can result in its heavy infestation in tree rows and can interrupt the spray pattern of low-volume drip irrigation systems. This new 3-page publication of the UF/IFAS Horticultural Sciences Department will assist Florida citrus growers with proper identification of clustered pellitory and with adoption of adequate and timely strategies to manage this weed in their groves. Written by Ramdas Kanissery, Biwek Gairhe, Brent Sellers, and Steve Futch. https://edis.ifas.ufl.edu/hs1341

DEVELOPMENT OF A WHITE PINE UNDERPLANTATION IN THINNED AND UNTHINNED ASPEN

1966 ◽  
Vol 42 (3) ◽  
pp. 244-250 ◽  
Author(s):  
John R. Clements
Keyword(s):  
High Mortality ◽  
Height Growth ◽  
White Pine ◽  
Poor Growth ◽  
Slow Growing ◽  
Growth Of Seedlings

In 1936, part of a dense 12-year-old aspen sucker stand was thinned. In the following year thinned and unthinned portions of the stand were underplanted with 2-2 white pine stock.By 1950, most seedlings were still small and slow-growing. Mortality among these individuals was high in the following 10 years but mortality was fairly light among seedlings of taller height classes. Height growth of seedlings continued to be poor so long as the crowns were below the shrub layer.White pine planted beneath young aspen stands require care at least until they are about 4 feet tall, especially on moist sites. The underbrush must be controlled, otherwise excessively high mortality and poor growth of the survivors will result.

Growth Intercept Methods for Predicting Site Index in Red Pine Plantations in the Allegheny Plateau of Ohio

1990 ◽  
Vol 7 (1) ◽  
pp. 27-30 ◽  
Author(s):  
James H. Brown ◽  
Charles A. Duncan
Keyword(s):  
Site Index ◽  
Height Growth ◽  
Red Pine ◽  
Site Quality ◽  
Soil Horizon ◽  
Old Field ◽  
Annual Increment ◽  
Breast Height ◽  
Allegheny Plateau ◽  
Growth Intercept

Abstract Growth intercept (GI) techniques were evaluated for estimating site quality in red pine stands planted on old-field sites in the unglaciated Western and Central Allegheny Plateau regions of Ohio. Correlations between height growth of trees below breast height (BH) and height growth above BH were not statistically significant. Site index estimates were made using age at BH and height from BH to the growing tip. Three-year and 5-year growth beginning three internodes above the BH annual increment and 10-year growth beginning one internode above BH were more significantly correlated with height than were intercepts beginning at BH. In equations developed for predicting site index, 3-, 5-, and 10-year intercepts in combination with age accounted for 64 to 80% of the variation in tree heights. Combining thickness of the A soil horizon with GI and age statistically increased the variation accounted for in the 3- and 5-year GI equations; however, for field use, the improvement in accuracy was not sufficient to justify making the additional soil measurement. North. J. Appl. For. 7(1):27-30, March 1990.

scholarly journals 012 Management of Powdery Mildew on Flowering Dogwood with Soybean Oil

HortScience ◽  
2000 ◽  
Vol 35 (3) ◽  
pp. 390A-390
Author(s):  
Dennis E. Deyton ◽  
Carl E. Sams ◽  
Mark T. Windham
Keyword(s):  
Powdery Mildew ◽  
Soybean Oil ◽  
Disease Severity ◽  
Net Photosynthesis ◽  
Height Growth ◽  
Block Designs ◽  
Flowering Dogwood ◽  
Repeated Applications ◽  
Heavy Infestation

Field-grown dogwood trees in a commercial nursery were sprayed with 0%, 1%, or 2% soybean oil emulsified with Latron B-1956 at 2-week intervals from 10 June until 19 Aug. 1998. In 1999, dogwood trees were sprayed with 0%, 1%, 1.5%, 2%, or 2.5% emulsified soybean oil at 2-week intervals from 22 June until 26 Aug. The trials had treatments arranged in randomized complete-block designs with eight trees per block and six and four replications in 1998 and 1999, respectively. Disease severity of powdery mildew was estimated using the following scale: 0 = healthy, 1 < 2%, 2 < 10%, 3 < 25%, 4 < 50%, 5 > 50%, and 6 = 100% of foliage with symptoms or signs of powdery mildew. In 1998, trees sprayed with soybean oil had higher net photosynthesis rates and more caliper and height growth than control trees. Untreated trees and ≈25% of foliage infected with powdery mildew on 8 July, while trees sprayed with 1% or 2% soybean oil had about 2% of leaves infected. In 1999, the powdery mildew was already present on foliage (wet spring) when the first application of oil was made. Repeated sprays of soybean oil did not reduce the incidence of powdery mildew. Thus, soybean oil appeared to provide protective control of powdery mildew but not curative control of a heavy infestation of the fungi. Photosynthesis was increased by soybean oil for the first month of spraying in 1999, but did not differ after that. Repeated applications of even the high rates of oil did not cause phytotoxicity.

scholarly journals Growth Index and Disease Ratings of 55 Crape Myrtle Cultivars in Tennessee

HortScience ◽  
1996 ◽  
Vol 31 (4) ◽  
pp. 660d-660
Author(s):  
W.T. Witte ◽  
M.T. Windham ◽  
R.J. Sauve ◽  
P.C. Flanagan
Keyword(s):  
Powdery Mildew ◽  
New Orleans ◽  
Drip Irrigation ◽  
Baton Rouge ◽  
Growth Index ◽  
Growing Season ◽  
World's Fair ◽  
Single Plant ◽  
Mean Width

Fifty-five accessions of commercially available crape myrtle cultivars were established with 10 single-plant replications during Fall 1993 and Spring 1994. Drip irrigation began on a regular basis May 1994 and plants were fertilized regularly. In contrast to the 1994 growing season with heavy powdery mildew infestation, little powdery mildew occurred in 1995. Mean growth index (GI = centimeter height + centimeter mean width) was calculated for each cultivar in Fall 1994 and 1995. Fastest growth occurred in `Tuskegee' and `Biloxi' (GI = 276, 246, respectively), followed by a group including `Tonto', `Comanche', `Choctaw', `Hardy Lavender', `Natchez', `Potomac', and `Tuscarora' (GI = 185 to 227). Slowest growth occurred in the group including `Pecos', `Seminole', `Baton Rouge', `Petite Orchid', `Bourbon Street', `Cherokee', `Monink Pink', `Moned Red', `Delta Blush', `Low Flame', `New Orleans', `Monow', and `World's Fair' (GI = 5 to 53). Data will be presented on powdery mildew ratings and physiological injury sustained during Winter 1995–96.

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