A view from above: the use of drones and image-based phenotyping in breeding and production of woody ornamentals

Long-standing fertilizer recommendations for field-grown nursery and landscape ornamentals are based on maximizing growth, not nutrient efficiency. Further, these recommendations fall short because of failure to consider 1) the extent of crop nutrient removal, 2) varying nutrient retention characteristics of soils across the United States, and 3) a body of research that suggests that woody ornamentals have a limited response to fertilization under most soil conditions. Concern for the environmental impact of fertilization justifies a reevaluation of current nursery fertilization practices, as well a discussion of the practical constraints on the adoption of new approaches, e.g., nutrient demand-driven fertilization. Research on the nutrient use patterns of woody plants will be reviewed with emphasis on implications for increasing fertilization efficiency. OSU research on water availability and nutrient-use interactions also will be presented.

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Vegetative Propagation of Woody Ornamentals Through Forcing of Epicormic Shoots

HortScience ◽

10.21273/hortsci.33.3.503c ◽

1998 ◽

Vol 33 (3) ◽

pp. 503c-503

Author(s):

Paul H. Henry ◽

John E. Preece

Keyword(s):

Plant Material ◽

Woody Plant ◽

Clonal Plant ◽

Light Regime ◽

Moisture Regime ◽

Stem Cuttings ◽

Shrub Species ◽

Woody Ornamentals ◽

Ornamental Tree ◽

Environmental Light

A propagation method is being developed that allows softwood shoots to be generated from stem sections of dormant woody plant species. These shoots, forced in the greenhouse during the winter, are subsequently collected and processed as softwood stem cuttings to produce clonal plant material. Many species in the nursery industry can only be propagated using softwood cuttings, and this technique allows propagation of these species to be initiated several months earlier than what is typically possible. Current studies involve expanded screening of ornamental tree and shrub species to determine if commercial production using this technique is feasible. Results demonstrate that many species may be propagated using this method, but that some species are more prolific than others with respect to number of softwood shoots produced. Additional studies are currently in progress to determine the environmental (light regime, moisture regime) and cultural (type of media) conditions that are optimal when producing clonal plant material via this technique.

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NEW SELECTIONS OF WOODY ORNAMENTALS IN DUBRAVA ARBORETUM

Acta Horticulturae ◽

10.17660/actahortic.2010.885.6 ◽

2010 ◽

pp. 55-59

Author(s):

V. Baronienė

Keyword(s):

Woody Ornamentals

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Lopholeucaspis japonica. [Distribution map].

Distribution Maps of Plant Pests ◽

10.1079/dmpp20066600582 ◽

1998 ◽

Author(s):

Keyword(s):

Andhra Pradesh ◽

Russian Far East ◽

Far East ◽

Uttar Pradesh ◽

Fruit Trees ◽

Distribution Map ◽

Woody Ornamentals ◽

Southern Russia ◽

New Distribution ◽

Distribution In Europe

Abstract A new distribution map is provided for Lopholeucaspis japonica Cockerell Homoptera: Coccoidea: Diaspididae Attacks mainly Citrus spp., also other fruit trees and woody ornamentals. Information is given on the geographical distribution in EUROPE, Russia, Russian Far East, Southern Russia, Slovakia, Ukraine, ASIA, Azerbaijan, China, Anhui, Fujian, Guangdong, Guangxi, Hubei, Hunan, Jiangsu, Jiangxi, Sichuan, Yunnan, Zhejiang, Republic of Georgia, India, Andhra Pradesh, Uttar Pradesh, Iran, Japan, Hokkaido, Honshu, Kyushu, Shikoku, Korea Democratic People's Republic, Pakistan, Taiwan, NORTH AMERICA, USA, Connecticut, Maryland, OCEANIA, Australia, Northern Territory.

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Clone selection of woody ornamentals in Finland

Acta Agriculturae Scandinavica Section B - Soil & Plant Science ◽

10.1080/09064719809362488 ◽

1998 ◽

Vol 48 (2) ◽

pp. 113-127 ◽

Cited By ~ 1

Author(s):

Sirkka Juhanoja ◽

Minna Heikkilä ◽

Arja Virtanen

Keyword(s):

Woody Ornamentals ◽

Clone Selection ◽

Selection Of

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CHALLENGES AND PERSPECTIVES FOR WOODY ORNAMENTALS

Acta Horticulturae ◽

10.17660/actahortic.2013.990.1 ◽

2013 ◽

pp. 27-36

Author(s):

N.M.G. Dolmans ◽

H. van Reuler

Keyword(s):

Woody Ornamentals

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Oxadiazon for Weed Control in Woody Ornamentals

Weed Science ◽

10.1017/s0043174500044283 ◽

1979 ◽

Vol 27 (4) ◽

pp. 396-400 ◽

Cited By ~ 4

Author(s):

Richard E. Bailey ◽

James A. Simmons

Keyword(s):

Weed Control ◽

Field Experiments ◽

The United States ◽

Control Agent ◽

Effective Control ◽

Economic Losses ◽

Labor Costs ◽

Stellaria Media ◽

Senecio Vulgaris ◽

Woody Ornamentals

Weed competition in the commercial production of woody ornamentals results in substantial economic losses annually due to increased labor costs and reductions in plant growth and quality. Container and field experiments were established in 1975 and continued through 1976 to evaluate oxadiazon [2-tert-butyl-4-(2,4-dichloro-5-isopropoxyphenyl)-δ2-1,3,4-oxadiazolin-5-one] as a weed control agent and to determine its effect on ornamentals at selected test sites throughout the United States. Test programs were conducted with container and field grown ornamentals at 10 locations during 1975 and subsequently increased to 12 locations in 1976. Rates evaluated included 3.4, 4.5, 5.6 and 11.2 kg/ha. Highly effective control of 17 weeds was obtained for 3-month periods at rates as low as 4.5 kg/ha. Oxadiazon gave commercially acceptable control of common groundsel (Senecio vulgaris L.), a very serious weed problem in containers. Control of common chickweed [Stellaria media (L.) Cyrillo], however, was poor at all rates tested. Ornamental tolerance to oxadiazon was generally excellent. Of the 50 ornamental species evaluated in 1975, only two displayed phytotoxic symptoms; scarlet firethorn (Pyracantha coccinea Roem.) and Chinese privet (Ligustrum sinense Lour.) at 5.6 and 11.2 kg/ha following three successive applications at 3-month intervals. In 1976 trials on 63 species, phytotoxic symptoms could not be reproduced on the above species; chemical intolerance was limited to growth inhibition of aloe yucca (Yucca aloifolia L.) at 5.6 and 11.2 kg/ha.

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