Evaluation of Low-rate Herbicides to Supplement Methyl Bromide Alternative Fumigants to Control Weeds in Strawberry

Manning, G.; Fennimore, Steven A.

doi:10.21273/horttech.11.4.603

Cited by 14 publications

(14 citation statements)

References 2 publications

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“…A 2010 survey by the Southern Weed Science Society reported that purple and yellow nutsedges are the most common and troublesome weeds in fruiting vegetable crops in Florida (Webster 2010). There are very few POST herbicides that are safe to use on strawberries (Manning and Fennimore 2001), and in Florida, clopyralid, clethodim, and sethoxydim are the only POST herbicides registered (Anonymous 2015; Figueroa and Doohan 2006; Vallad et al 2014). Currently, there are no herbicides with activity on nutsedge registered for use in strawberry.…”

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confidence: 99%

Weed Control with and Strawberry Tolerance to Herbicides Applied through Drip Irrigation

Boyd

2017

Weed Technol

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Broadleaves, grasses, and nutsedge species are persistent problems with limited management options for strawberry growers in Florida. Field experiments were conducted in 2015-2016 (year 1) and 2016-2017 (year 2) at the Gulf Coast Research and Education Center in Balm, FL, to evaluate weed control and strawberry tolerance to herbicides applied through the drip irrigation. 2940 g ai ha , and 1070 g ai ha -1 S-metolachlor were applied through a single drip tape at 7 or 14 d prior to transplanting. Halosulfuron was the most injurious herbicide, causing 18 and 46% injury at 35 d after transplanting (DATP) in year 1 when the herbicide was applied 7 and 14 d prior to transplanting, respectively. However, strawberry plants recovered from the initial injury and there was no reduction in total berry yield. None of the other herbicides evaluated elicited significant crop injury nor reduced berry yield. Averaged over application timings, EPTC, fomesafen, and napropamide suppressed yellow nutsedge emergence to 49, 64, and 41% of the nontreated control, respectively. Flumioxazin, fomesafen, and halosulfuron suppressed black medic emergence to 55, 52, and 55% of the nontreated control, respectively. None of the herbicides evaluated adequately suppressed Carolina geranium. Overall, results suggest that the evaluated herbicides with the exception of halosulfuron are safe for use on strawberry and would give growers an alternative management option. Drip-applied herbicides permit application closer to the transplant date and would be helpful as part of a weed control program for weed suppression. Nomenclature: EPTC; flumioxazin; fomesafen; halosulfuron; napropamide; oxyfluorfen; S-metolachlor; Carolina geranium, Geranium carolinianum L.; purple nutsedge, Cyperus rotundus L.; strawberry, Fragaria × ananessa (Weston) Duchesne ex Rozier.

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Weed Control with and Strawberry Tolerance to Herbicides Applied through Drip Irrigation

Boyd

2017

Weed Technol

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“…An economic analysis conducted by the U.S. Department of Agriculture indicates that the phaseout of MeBr as a preplant soil fumigant may have substantial impact on many commodities because no known single alternative fumigant, chemical, or other technology exists that can readily substitute for MeBr in efficacy, cost, ease of use, availability, worker safety, and environmental safety below the ozone layer (Osteen, 2003;USDA, 2008a). Among possible alternatives are host plant resistance, biological control, cultural practices, and alternative chemicals, either alone or in combination (Gullino et al, 2003;Manning and Fennimore, 2001;Martin, 2003;Rieger et al, 2001;Ristaino and Thomas, 1997;Rosskopf et al, 2005;Schneider et al, 2003). A few products that have a long history of use include 1,3-dichloropropene, metam sodium, chloropicrin, and combinations of these [e.g., 61.1% 1,3-dichloropropene + 34.7% chloropicrin (Telone-C35 TM ; Dow Agro-Sciences, Indianapolis)] (Duniway, 2002;Martin, 2003;Schneider et al, 2003).…”

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Economic Evaluation of Methyl Bromide Alternatives for the Production of Tomatoes in North Carolina

Sydorovych

Safley

Welker

et al. 2008

hortte

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Partial budget analysis was used to evaluate soil treatment alternatives to methyl bromide (MeBr) based on their efficacy and cost-effectiveness in the production of tomato (Solanum lycopersicum). The analysis was conducted for the mountain tomato production region based on 6 years of field test data collected in Fletcher, NC. Fumigation alternatives evaluated included 61.1% 1,3-dichloropropene + 34.7% chloropicrin (Telone-C35™), 60.8% 1,3-dichloropropene + 33.3% chloropicrin (InLine), 99% chloropicrin (Chlor-o-pic), 94% chloropicrin (TriClor EC), 42% metam sodium (4.26 lb/gal a.i., Vapam), and 50% iodomethane + 50% chloropicrin (Midas). The MeBr formulation was 67% methyl bromide and 33% chloropicrin (Terr-O-Gas). Chloropicrin applied at 15 gal/acre provided the greatest returns with an additional return of $907/acre relative to MeBr. Telone-C35 provided an additional return of $848/acre and drip-applied metam sodium provided an additional return of $137/acre. The return associated with broadcast applied metam sodium was about equal to the estimated return a grower would receive when applying MeBr. Fumigating with a combination of chloropicrin and metam sodium; shank-applied chloropicrin at 8 gal/acre; drip-applied chloropicrin, Midas, or InLine; and the nonfumigated soil treatment all resulted in projected losses of $156/acre, $233/acre, $422/acre, $425/acre, $604/acre, and $2133/acre, respectively, relative to MeBr. Although technical issues currently associated with some of the MeBr alternatives may exist, results indicate that there are economically feasible fumigation alternatives to MeBr for production of tomatoes in North Carolina.

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“…Crop tolerance was evaluated 1 and 3 WAA by visually estimating the percent plant stunting and chlorosis, where 0 = no visible damage and 100 = death of strawberry plants. Six WAA stolons were counted from the fi ve central plants in each plot and the diameter of the crop canopy was measured as described by Manning and Fennimore (2001). At 18 WAA crop tolerance was reassessed, by measuring plant height and percent of ground covered by the strawberry canopy.…”

Section: Herbicide Efficacy Studiesmentioning

confidence: 99%

Efficacy and Selectivity of Promising Herbicides for Common Groundsel Control in Newly Established Strawberry

Figueroa¹,

Doohan²,

Cardina³

2005

horttech

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ADDITIONAL INDEX WORDS. Senecio vulgaris, Fragaria ×ananassa, sulfentrazone, weed control, herbicide SUMMARY. Common groundsel (Senecio vulgaris) is an increasingly important weed in strawberries (Fragaria ×ananassa), a crop in which openspace within and between rows is susceptible to infestations. Cultivation, hand hoeing, and registered herbicide are only partially effective in controlling common groundsel, and tolerance or resistance to herbicides is common in this species. Field and greenhouse studies were conducted to identify and select herbicides for controlling common groundsel in newly planted strawberries. Herbicides applied to strawberries within 1 week after planting in 2000 were: terbacil and simazine alone and tank mixed with napropamide; pendimethalin, dimethenamid, metolachlor, ethofumesate and sulfentrazone. Based on selectivity and effi cacy observed in this preliminary experiment, sulfentrazone and fl umiclorac were selected for further evaluation in 2001 and 2002.We would like to thank Tim Koch for his support with herbicide applications and evaluations; Bert Bishop for his valuable guidance with statistical analysis; John Elliott for crop management, especially during frost control periods; and Cathy Herms and Joel Felix for reviewing this manuscript.

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Evaluation of Low-rate Herbicides to Supplement Methyl Bromide Alternative Fumigants to Control Weeds in Strawberry

Cited by 14 publications

References 2 publications

Weed Control with and Strawberry Tolerance to Herbicides Applied through Drip Irrigation

Weed Control with and Strawberry Tolerance to Herbicides Applied through Drip Irrigation

Economic Evaluation of Methyl Bromide Alternatives for the Production of Tomatoes in North Carolina

Efficacy and Selectivity of Promising Herbicides for Common Groundsel Control in Newly Established Strawberry

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