Vargas Laró, Nelson

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    Uso de herbicidas preemergentes y triturado biodegradable para el control de malezas en el cultivo de piña [𝘈𝘯𝘢𝘯𝘢𝘴 𝘤𝘰𝘮𝘰𝘴𝘶𝘴 L. (Merr.)]
    (2015) Vargas Laró, Nelson; Robles Vázquez, Wilfredo; College of Agricultural Sciences; Morales Payán, José Pablo; Lugo Torres, María L.; Department of Agro-Environmental Sciences; Muñoz Pérez, Carlos A.
    Two experiments were conducted in two locations to evaluate various weed control treatments in combination with two types of woody mulch in the cultivation of pineapple [𝘈𝘯𝘢𝘯𝘢𝘴 𝘤𝘰𝘮𝘰𝘴𝘶𝘴 (L). Merr.]. The first experiment was conducted at the Agricultural Experiment Station in Corozal in 2011. Three herbicides were evaluated on their own or in combination with mulch of 𝘈𝘭𝘣𝘪𝘤𝘪𝘢 spp. and 𝘙𝘰𝘺𝘴𝘵𝘰𝘯𝘦𝘢 𝘣𝘰𝘳𝘪𝘯𝘲𝘶𝘦𝘯𝘢, distributed in nine control strategies: bromacil, hexazinone, bromacil + mulch, hexazinone + mulch, hexazinone + glyphosate 8 weeks after treatment (WAT), glyphosate 8 WAT, weedy, with mulch only, and weeding. Bromacil and hexazinone control strategies, and their respective combinations presented over 75% weed control and less of 630 gDW/m2 in weed biomass up to 40 WAT. The second experiment was conducted at the Agricultural Experiment Station Isabela and Corozal simultaneously in 2012. Two herbicides were evaluated on their own or in combination with mulch of 𝘚𝘱𝘢𝘵𝘩𝘰𝘥𝘦𝘢 𝘤𝘢𝘮𝘱𝘢𝘯𝘶𝘭𝘢𝘵𝘢, distributed in nine control strategies: bromacil, diuron, bromacil + diuron, bromacil + mulch, diuron + mulch, bromacil + diuron + mulch, mulch only, weedy and weeding. The control strategy of diuron, bromacil and their respective combinations proved to be more effective in both locations reporting up to 80% weed control and less than 300 gDW/m2 in weed biomass up to 40 WAT. On the other hand, control strategies of mulch only reported less than 50% weed control and over 320 gDW/m2 in weed biomass up to 40 WAT. This study should be taken into consideration and used as a basis for future work as currently is the only research in Puerto Rico for weed control in pineapple using other control strategies to minimize the use of herbicides.