Pilea microphylla chemical control in desert rose production

The aim was to evaluate the use of oxyfluorfen in Pilea microphylla control in desert rose cultivation. The experimental design was completely randomized, with six treatments with six replications, characterized by concentrations of oxyfluorfen (0, 240, 480, 720, 960 and 1200 g a.i. ha-1). The evaluations were performed at 7, 14, 21, 30, 60 and 90 days after application (DAA) of the herbicide to check the fitometrics level on desert rose plants and percentage of control Pilea microphylla. The 200 days of culture, was evaluate the fitometrics characteristics: height, number of sprouts, shoots length, diameter caudex, dry mass of stems, leaves and roots. Levels of toxicity symptoms if presented increasing with increasing dose of oxyfluorfen in the evaluations performed at 7 and 14 DAA from the thirtieth day there was no symptoms of phytotoxicity. For evaluations at 30, 60 and 90 DAA there was the 100% control of grease weed at all doses studied. Plant height and dry mass of roots showed decreasing linear effect. However, the number of lateral sprouts and dry matter stems have a quadratic behavior, with minimum point was 371.42 g a.i. ha-1 and maximum point was 450 g a.i. ha-1, respectively. The use of oxyfluorfen herbicide is effective in Pilea microphylla control in desert rose vases.