Nutsedge (Cyperus Spp.) Control in Bell Pepper (Capsicum Annuum L.) Using Fallow Period Weed Management, Fumigants, and ...

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Material Information

Title:
Nutsedge (Cyperus Spp.) Control in Bell Pepper (Capsicum Annuum L.) Using Fallow Period Weed Management, Fumigants, and In-Crop Herbicides
Physical Description:
1 online resource (58 p.)
Language:
english
Creator:
Miller, Michael R
Publisher:
University of Florida
Place of Publication:
Gainesville, Fla.
Publication Date:

Thesis/Dissertation Information

Degree:
Master's ( M.S.)
Degree Grantor:
University of Florida
Degree Disciplines:
Horticultural Sciences
Committee Chair:
DITTMAR,PETER J
Committee Co-Chair:
VALLAD,GARY EDWARD
Committee Members:
FERRELL,JASON ARDEN

Subjects

Subjects / Keywords:
bell -- control -- fallow -- fumigation -- herbicides -- nutsedge -- pepper -- weed
Horticultural Sciences -- Dissertations, Academic -- UF
Genre:
Horticultural Sciences thesis, M.S.
bibliography   ( marcgt )
theses   ( marcgt )
government publication (state, provincial, terriorial, dependent)   ( marcgt )
born-digital   ( sobekcm )
Electronic Thesis or Dissertation

Notes

Abstract:
Due to the phase out of methyl bromide and the few herbicides registered, nutsedge (Cyperus spp. L) is a problematic weed in Florida bell pepper (Capsicum annuum L.) production. In 2012 and 2013, field studies were established to evaluate the efficacy of fallow programs, fumigants, and in crop herbicides for nutsedge control in bell pepper. The fallow weed management and fumigation study included 8 fallow programs and 3 fumigant treatments. Fallow programs consisted of 8 combinations of glyphosate (G) and cultivation (C) and 3 fumigants including 1,3-dichloropropene+chloropicrin, dimethyl-disulfide+chloropicrin, and a non-treated check. Results from this study found all fallow programs to provide greater late season control of nutsedge compared to the non-treated with the greatest control observed with GG and GCG. Fumigation provided additional nutsedge control in single input fallow programs. Increased marketable yield was observed in 2012 with the application of either fumigant compared to a non-treated. In the fall of 2012 and spring of 2013 a second field study was conducted to determine the efficacy of S-metolachlor and fomesafen applied preemergence (PRE) under the polyethylene mulch, followed by (f.b.) a postemergence directed (POST-DIR) application of imazosulfuron to achieve season-long control of nutsedge in bell pepper. Nutsedge control in both years at 28 days after planting was similar among all PRE treatments providing 60% control. The addition of imazosulfuron POST-DIR following S-metolachlor or fomesafen PRE provided greater control compared to S-metolachlor or fomesafen alone 14, 21, and 28 days after the POST-DIR application. S-metolachlor resulted in lower marketable weight and marketable count compared to fomesafen in 2012, however, this was not observed in 2013. The results observed from the fallow weed management and fumigation study indicate that nutsedge control in bell pepper requires integrated control measures including fallow programs, fumigants, and in-crop herbicides. Furthermore, all fallow programs provide greater control of nutsedge compared to the non-treated. The in-crop herbicide study indicates the importance of a PRE f.b. POST-DIR herbicide for nutsedge control and that fomesafen or S-metolachlor PRE f.b. imazosulfuron POST-DIR provides growers with a viable tool capable of achieving season long control of nutsedge in bell pepper.
General Note:
In the series University of Florida Digital Collections.
General Note:
Includes vita.
Bibliography:
Includes bibliographical references.
Source of Description:
Description based on online resource; title from PDF title page.
Source of Description:
This bibliographic record is available under the Creative Commons CC0 public domain dedication. The University of Florida Libraries, as creator of this bibliographic record, has waived all rights to it worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law.
Statement of Responsibility:
by Michael R Miller.
Thesis:
Thesis (M.S.)--University of Florida, 2013.
Local:
Adviser: DITTMAR,PETER J.
Local:
Co-adviser: VALLAD,GARY EDWARD.
Electronic Access:
RESTRICTED TO UF STUDENTS, STAFF, FACULTY, AND ON-CAMPUS USE UNTIL 2014-12-31

Record Information

Source Institution:
UFRGP
Rights Management:
Applicable rights reserved.
Classification:
lcc - LD1780 2013
System ID:
UFE0046339:00001