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Dive into the research topics where Timothy N. Motis is active.

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Featured researches published by Timothy N. Motis.


Weed Technology | 2003

Season-Long Interference of Yellow Nutsedge (Cyperus esculentus) with Polyethylene-Mulched Bell Pepper (Capsicum annuum)1

Timothy N. Motis; Salvadore J. Locascio; James P. Gilreath; William M. Stall

Yellow nutsedge, a weed commonly present in Florida vegetable fields, may substantially reduce crop yields when not controlled. Soil fumigation with methyl bromide effectively controls nutsedges, but methyl bromide is being phased out of production and use in the United States. Therefore, nutsedge management in bell pepper is a cause for concern. An experiment was conducted during four seasons (spring and fall of 1999 and 2000) to determine the tolerance of bell pepper grown at two in-row spacings (23 and 31 cm) to interference resulting from planted yellow nutsedge tuber densities (0 to 120 tubers/m2). Relative to yields with no nutsedge, pepper fruit yields in each season were reduced 10% with fewer than 5 planted tubers/m2. Yield losses increased more rapidly with an increase in initial nutsedge density from 0 to 30 than from 30 to 120 tubers/m2. With 30 nutsedge tubers/m2, large fruit yield was reduced 54 to 74% compared to that with no nutsedge. Nutsedge shoots overtopped the pepper plants as early as 6 wk after treatment when, with 15 planted tubers/m2, nutsedge interference reduced pepper plant biomass by 10 to 47%. In the absence of methyl bromide, weed control strategies with high efficacy against yellow nutsedge will be needed for bell pepper production. Nomenclature: Methyl bromide; yellow nutsedge, Cyperus esculentus L. #3 CYPES; bell pepper, Capsicum annuum L. ‘X3R Camelot’. Additional index words: Weed interference, yellow nutsedge competition, yield loss. Abbreviations: No., number; WAT, weeks after treatment.


Crop Protection | 2006

Comparing methyl bromide alternatives for soilborne disease, nematode and weed management in fresh market tomato

Bielinski M. Santos; James P. Gilreath; Timothy N. Motis; Joseph W. Noling; John P. Jones; Jack A. Norton


Crop Protection | 2005

Cyperus spp. control with reduced methyl bromide plus chloropicrin doses under virtually impermeable films in pepper

James P. Gilreath; Timothy N. Motis; Bielinski M. Santos


Crop Protection | 2005

Methyl bromide alternatives for nematode and Cyperus control in bell pepper (Capsicum annuum)

James P. Gilreath; Bielinski M. Santos; Timothy N. Motis; Joseph W. Noling; John M. Mirusso


Hortscience | 2004

Critical yellow nutsedge-free period for polyethylene-mulched bell pepper

Timothy N. Motis; Salvadore J. Locascio; James P. Gilreath


Horttechnology | 2006

Effects of Mulch Types and Concentrations of 1,3-Dichloropropene plus Chloropicrin on Fumigant Retention and Nutsedge Control

Bielinski M. Santos; James P. Gilreath; Timothy N. Motis; Marcel von Hulten; Myriam N. Siham


Horttechnology | 2008

Performance of Methyl Bromide Alternatives in Strawberry

James P. Gilreath; Bielinski M. Santos; Timothy N. Motis


Horttechnology | 2005

Managing Nutsedge and Stunt Nematode in Pepper with Reduced Methyl Bromide plus Chloropicrin Rates under Virtually Impermeable Films

Bielinski M. Santos; James P. Gilreath; Timothy N. Motis


Crop Protection | 2005

Influence of supplementary in-bed chloropicrin application on soilborne pest control in tomato (Lycopersicon esculentum)

James P. Gilreath; Timothy N. Motis; Bielinski M. Santos; John M. Mirusso; Phyllis R. Gilreath; Joseph W. Noling; John P. Jones


Horttechnology | 2005

Resurgence of Soilborne Pests in Doublecropped Cucumber after Application of Methyl Bromide Chemical Alternatives and Solarization in Tomato

James P. Gilreath; Timothy N. Motis; Bielinski M. Santos; Joseph W. Noling; Salvadore J. Locascio; Dan O. Chellemi

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Dan O. Chellemi

Agricultural Research Service

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