An essay was conducted aiming to study the effects of soil liming on the initial growth and nutrient uptake by Commelina benghalensis L. plants. The experiment was conducted under greenhouse conditions, using five liter pots filled with material collected in the arable layer of a Latossol soil which showed 3.8 of original pH value. The experimental design was completely randomized plots with four replications. The following doses of dolomitic lime were studied: 0, I, 2, 3, 4 and 5 t/ha. There was 15 days for incubation period before the C. benghalensis seedling transplantation. The plants were collected 49 days after the seedlings transplantation. The weed showed intense response to soil liming, increasing the leaf area, biomass accumulation and nutrient uptake, specially nitrogen, phosphorus, magnesium and sulphur. The effects of liming on the pattern of resources allocation were different for each nutrient and plant biomass.
Nutrient uptake; weed ecology