2019
DOI: 10.1590/s0100-83582019370100027
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Abstract: Weeds constitute the main constraint on the productivity of sugarcane agroecosystems in Argentina. This work aimed to analyze the floristic and phytosociological composition of sugarcane weed communities in different agroecological areas in Tucumán. Fifteen plots from each area were sampled 60 to 90 days after crop shooting, by throwing a 0.5 m x 0.5 m quadrat metallic frame six times in random directions in each of the plots. Species found within the frame were identified. Later, fresh and dry biomass weight … Show more

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Cited by 5 publications
(4 citation statements)
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“…(1) Means followed by equal letter, lowercase in the columns and capital letters in the lines, do not differ by Tukey's test at 5% of probability. sensitive to infrequent species, whereas the Simpson's index accounts for numerous species more efficiently (Cabrera et al, 2019). The similarity index between crop systems was high in April 2010, with values higher than 0.66, regardless whether they were intercropped or single crops (Figure 3).…”
Section: Resultsmentioning
confidence: 99%
“…(1) Means followed by equal letter, lowercase in the columns and capital letters in the lines, do not differ by Tukey's test at 5% of probability. sensitive to infrequent species, whereas the Simpson's index accounts for numerous species more efficiently (Cabrera et al, 2019). The similarity index between crop systems was high in April 2010, with values higher than 0.66, regardless whether they were intercropped or single crops (Figure 3).…”
Section: Resultsmentioning
confidence: 99%
“…The plants in the sample plots were collected by cutting their shoots, separated by species, placed in kraft paper bags, and dried in an oven at 70 °C for 72 hours to determine their dry biomass (CABRERA et al, 2019).…”
Section: Methodsmentioning
confidence: 99%
“…The data collected were subjected to weed community analysis using phytosociological parameters, which show the absolute and relative values of weed frequency, density, abundance, and importance value index, through the formulas proposed by Mueller-Dombois and Ellemberg (1974) and described by Cabrera et al (2019). In addition, the coefficient of Sorensen (1972) was used to determine the similarity between the areas evaluated (properties).…”
Section: Methodsmentioning
confidence: 99%
“…In an agroecosystem, weeds cause interference to different degrees, depending on their individual characteristics; the different soil and climate conditions in the different agroecological regions influence the floristic composition and the predominance of one weed species over another; additionally, to program practices that lead to adequate weed management in the various crops, it is essential to identify whether the composition of weed communities and their qualitative and quantitative characteristics differ from one agroecological region to another [14] .…”
Section: Introductionmentioning
confidence: 99%