Impact of Totally Impermeable Film on the Efficacy of 1, 3-Dichloropropene and Chloropicrin Mixtures for the Control of Nutsedge. (December 2016)

• Record Type: Journal Article
• Authors: Stevens, Mary C.; Freeman, Joshua H.; Dittmar, Peter J.
• Is Part Of: Weed technology. Volume 30:Number 4(2016)
• Page Start: 910
• Page End: 918
• Publication Date: 2016-12
• Subjects: 1, 3-dichloropropene, -- chloropicrin, -- totally impermeable film, -- virtually impermeable film, -- purple nutsedge, Cyperus rotundus L., -- yellow nutsedge, Cyperus esculentus L.; Fumigation, -- methyl bromide alternatives, -- plasticulture, -- weed control; Weeds -- Periodicals; Weeds -- Control -- Periodicals; 632.5
• DOI: 10.1614/WT-D-16-00042.1
• Languages: English
• ISSNs: 0890-037X

Abstract

Abstract : Methyl bromide (MBr) was a widely used fumigant in plasticulture because of its effectiveness against soil-borne pests and weeds in high-value crops; however, it was found to be a class 1 ozone-depleting substance and is no longer available for use in most of the United States. A mixture of 1, 3-dichloropropene and chloropicrin (Pic-Clor 60) is an alternative that has been used to control soil-borne pathogens and nematodes, and has marginal control of weeds. Virtually impermeable film (VIF) and totally impermeable film (TIF) retain fumigants in the soil longer than the low- and high-density polyethylene films typically used in plasticulture production systems. The increased retention by these films may result in greater control of recalcitrant weeds such as nutsedge. Four rates of Pic-Clor 60 (112, 168, 224, and 280 kg ai ha −1 ) used with TIF, 280 kg ai ha −1 of Pic-Clor 60 used with VIF, and one nontreated control with VIF were evaluated for 2 yr to assess control of yellow and purple nutsedge and to determine an efficacious Pic-Clor 60 rate used with TIF. TIF with a lower rate of 224 kg ai ha −1 of Pic-Clor 60 significantly controlled nutsedge populations compared to a high rate of 280 kg ai ha −1 with VIF.