Abstract

Broad-leaved dock is a perennial weed, which infests mainly pastures, annual crops and perennials in the Southern of Brazil. Because it is a perennial plant, control becomes more difficult due to regrowth. The objective of this study was to evaluate the growth and development characteristics of cow-tongue plants in a non-competitive environment. The objective of this work was to monitor phenology and to evaluate the growth and development characteristics of broad-leaved dock plants in the non-competitive environment. The experiment was conducted in a greenhouse, after the seeds germinated in the BOD chamber, the seedlings were transplanted to pots filled with Cambisol Haplic. Destructive analyzes were performed at 0, 33, 94, 124, 156, 186 and 215 days after transplanting (DAT). The plants were collected separating the aerial part of the root system and the inflorescence, each part of the plant was taken to the drying oven by forced circulation of air for later determination of the dry mass. It was observed that the broad-leaved dock plants present initial growth rather slow. The total dry mass distribution was 56.8% of the total accumulated in the root system, followed by inflorescence (31.6%) and shoot (11.6%). The average number of seeds produced was 3,406 (± 389) per plant.

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