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Filtering by: Subject Plants, Effect of nitrates on Remove constraint Subject: Plants, Effect of nitrates on Advisor Crabtree, Garvin D. Remove constraint Advisor: Crabtree, Garvin D. Degree Field Horticulture Remove constraint Degree Field: Horticulture

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Modeling purple nutsedge (Cyperus rotundus L.) growth : preliminary evaluation of light intensity, soil moisture and herbicide effects

Creator:

Amerasinghe, A. A. L.

Abstract:

Purple nutsedge [Cyperus rotundas L.) has been recognized as one of the most troublesome perennial weeds of agricultural lands in tropical and some temperate regions. This research sought to determine the effects of timing of herbicides, shading, and soil moisture on plant population growth and tuber production of purple nutsedge...

Resource Type:

Dissertation

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regulation 126 5.5 Effect of plant density on shoot production from a single plant of purple nutsedge
Onion (Allium cepa L.) cultivar tolerance to bromoxynil

Creator:

Madrid, Modesto T.

Abstract:

In onions, sensitive cultivars diminish the usefulness of the selective herbicide bromoxynil. Tolerant cultivars can overcome this limitation. A better understanding of the biochemistry, physiology and genetics of bromoxynil tolerance could lead to improved weed control programs in onions. Onion cultivar response to bromoxynil was studied under greenhouse conditions. Tolerant...

Resource Type:

Dissertation

Full Text:

LITERATURE 42 MATERIALS AND METHODS 47 Effect of ethofumesate on cultivar tolerance to bromoxynil
Glyphosate activity as affected by spray drop size and leaf coverage

Creator:

King, Wayne O.

Abstract:

Bean shoot parts that respond to glyphosate (N- (phosphonomethyl)glycine) in ways useful for bioassay were determined by applying glyphosate doses of 3.8 to 60.3 ug ae per plant to the simple leaves when the first trifoliolate leaflets were about 1 cm long. Dry weights of parts that were almost fully...

Resource Type:

Dissertation

Full Text:

affecting spray drop retention, and Lake and Taylor (1974) found no effect of drop size on spray retention
Differential tolerance of woody nursery crop seedlings to napropamide

Creator:

Sumaryono, 1957-

Resource Type:

Masters Thesis

Full Text:

all plant species was reduced dramatically, but effects on shoot weight varied. Shoots of domestic

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Academic Affiliation

Horticulture4

Advisor

Crabtree, Garvin D.[remove]4

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1986 to 1993

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Committee Member

Allen, Thomas, Jr.1
Appleby, Arnold P.1
Burrill, Larry1
Conklin, Frank1
Fuchigami, Les1
more Committee Members »

Creator

Amerasinghe, A. A. L.1
King, Wayne O.1
Madrid, Modesto T.1
Sumaryono, 1957 1

Date

Date range begin – Date range end

Current results range from 1985 to 1992

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Decade

1990-19992
1980-19892

Degree Field

Horticulture[remove]4

Degree Level

Doctoral3
Master's1

Degree Name

Doctor of Philosophy (Ph.D.)3
Master of Science (M.S.)1

Language

English [eng]4

Non-Academic Affiliation

Oregon State University. Graduate School4

Peer Reviewed

No4

Resource Type

Dissertation3
Masters Thesis1

Rights Statement

Copyright Not Evaluated4

Subject

Plants, Effect of herbicides on3
Glyphosate1
Napropamide1
Nutgrass -- Control1
Onions1
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