2003 IR-4 Projects in Progress
Environmental Horticulture IR-4 Center
University of California, Davis

IR4 Project #

Plant

Material

Control Objective

Experimental conditions

18942A

Andromeda (Pieris)

BACILLUS SUBTILIS

Botrytis cinerea

raised bed

20293A

Azalea (Rhododendron)

BACILLUS SUBTILIS

Botrytis cinerea

growth chamber

20289A

Crocus (Colchicum)

BACILLUS SUBTILIS

Botrytis cinerea

growth chamber

18938A

geranium (Pelargonium)

BACILLUS SUBTILIS

Botrytis cinerea

raised bed

20292A

Hydrangea

BACILLUS SUBTILIS

Botrytis cinerea

growth chamber

18939A

Ladies-Eardrops (fuchsia)

BACILLUS SUBTILIS

Botrytis cinerea

raised bed

18951A

Lilac (Syringa)

BACILLUS SUBTILIS

Powdery mildew, Xanthomonus

raised bed

20287A

Lily (Lilium)

BACILLUS SUBTILIS

Botrytis cinerea

growth chamber

20294A

Rhododendron

BACILLUS SUBTILIS

Botrytis cinerea

growth chamber

20291A

Rose (Rosa)

BACILLUS SUBTILIS

Botrytis cinerea

growth chamber

18940A

Tailflower (Anthurium)

BACILLUS SUBTILIS

Botrytis cinerea

raised bed

20290A

Tulip (Tulipa)

BACILLUS SUBTILIS

Botrytis cinerea

growth chamber

13495A

Angelonia (Angelonia angustifolia)

CYCOCEL

Growth

Greenhouse

13551A

Coral plant (Russelia equisetformis)

CYCOCEL

Growth

Greenhouse

13552A

Coral porterweed (Stachytarpheta mutablis)

CYCOCEL

Growth

Greenhouse

19674A

Umbrella Tree (Schefflera)

CYCOCEL

Growth

Greenhouse

18798A

Alder, European (Alnus glutinosa)

ETHEPHON

defoliation

Can yard

07146A

Arborvitae (Thuja)

ETHEPHON

seed prevention

Can yard

21492A

Azalea (Rhododendron)

ETHEPHON

defoliation

greenhouse

18817A

Buffaloberry (Shepherdia argentea)

ETHEPHON

defoliation

Can yard

18806A

chokecherry (Prunus virginiana)

ETHEPHON

defoliation

Can yard

13526A

Coleus, Flamenettle (Coleus)

ETHEPHON

Growth

Can yard

13557A

Coral plant, Fountain (Russelia equisetformis)

ETHEPHON

Growth

Can yard

18800A

four-wing saltbrush, (Atriplex canescens)

ETHEPHON

defoliation

Can yard

18814A

Golden currant (Ribes aureum)

ETHEPHON

defoliation

Can yard

18815A

Japanese rose, Turkestan rose (Rosa rugosa)

ETHEPHON

defoliation

Can yard

13528A

Mexican petunia (Ruellia carolinensis)

ETHEPHON

Growth

Can yard

18801A

red osier dogwood (Cornus sericea)

ETHEPHON

defoliation

Can yard

18799A

Sage, Common; basin (Artemesia tridentata)

ETHEPHON

defoliation

Can yard

13533A

Sweet potato vine (Ipomoea batatas)

ETHEPHON

Growth

greenhouse

18803A

Walnut, Black (non-bearing) (Juglans nigra)

ETHEPHON

defoliation

Can yard

13535A

Yellow shrimp plant (Pachystachys lutea)

ETHEPHON

Growth

greenhouse

13512A

Egyptian-Star-Cluster (Pentas lanceolata)

UNICONAZOLE P

Growth

greenhouse

13568A

Feather reed grass (Calamagrostis acutifloria)

UNICONAZOLE P

Growth

greenhouse

18455A

ornamental kale (Brassica sp.)

UNICONAZOLE P

Growth

greenhouse

13263A

Rhododendron

UNICONAZOLE P

Growth

Can yard

19614A

Sage, Mexican bush (Salvia leucantha)

UNICONAZOLE P

Height

greenhouse

13509A

Sweet potato vine (Ipomoea batatas)

UNICONAZOLE P

Growth

greenhouse

13511A

Yellow shrimp plant (Pachystachys)

UNICONAZOLE P

Growth

greenhouse