Resumen
Two trials were conducted to evaluate the effects of herbicide and mulch combinations on weed management and strawberry (Fragaria × ananassa Duch.) yields under field conditions. Treatments were established in a split-plot design with five replications. Herbicides were the main plots and mulch types the subplots. The herbicides napropamide at rates of 4.50, 6.75 or 9.00 kg·ha [sup-]; oxyfluorfen at 0.57 kg·ha[sup-] ; and napropamide + oxyfluorfen at 4.50 + 0.57 kg;ha[sup-] were applied pretransplant on pressed beds covered with either low-density polyethylene mulch or virtually impermeable film. Weedy controls were also included. Ranked weed counts were analyzed by using a Kruskal-Wallis test (P = 0.05) and fruit numbers and weights were examined with analysis of variance. Means were separated with a Fisher's protected LSD test at 5% significance. Results indicate that mulch types had no influence on weed counts and yields, whereas herbicides affected both variables. No significant herbicide by mulch interactions were found. The napropamide + oxyfluorfen treatment resulted in the highest fruit numbers and weights. This herbicide combination showed the best grass and broadleaf weed control.
