Effect of mulch types on 1,3-dichloropropene + chloropicrin retention and nutsedge (Cyperus spp.) Control

James P. Gilreath, Bielinski M. Santos, Timothy N. Motis, Marcel Von Hulten

Abstract


Field trials were conducted to examine the effect of different 1,3-dichloropropene + chloropicrin (Inline[tm]) concentrations and mulch types on the fumigant retention and nutsedge control. Inline concentrations were 600, 800, 1000, 1200, and 1400 ppm. Mulch types were: a) Pliant High Barrier[tm] white on black, b) IPM Bromostop[tm] white on black, c) Pliant[tm] Metallized, and d) Klerk's[tm] green virtually impermeable film (VIF). Soil air in the beds was sampled at 1, 2, 3, 4, 6 and 7 days after Inline injection. During the first 3 days, the Klerk's VIF and IPM Bromostop had the highest fumigant retention. With 1400 ppm of Inline, Klerk's VIF, IPM Bromostop, and Pliant Metallized had 120%, 41%, and 76% more retention, respectively, than Pliant High Barrier white on black. With the same Inline concentration, Klerk's VIF, IPM Bromostop, and Pliant Metallized had 7, 2.5, and 4 times less nutsedge, respectively, 12 weeks after injection than Pliant High Barrier.

Keywords


cyperus esculentum; cyperus rotundus; lycopersicon esculentum; fumigant retention

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Proc. Fla. State Hort. Soc.     ISSN 0886-7283