Species diversity of segetal communities in tuber crops and in winter and spring cereals

Rzymowska, Z.; Ługowska, Maria; Skrzyczynska, J.

doi:10.5586/aa.2013.043

Cited by 4 publications

(4 citation statements)

References 8 publications

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“…Both indices (H', D) calculated for weed communities were higher in cereal crops than in tuber crops. Significant differences in H' and D values noted between crops are in agreement with Rzymowska et al [17] who noted the highest biodiversity in winter cereals. In our study, significant differences in weed biodiversity were established only between spring and winter cereal crops.…”

Section: Discussionsupporting

confidence: 90%

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The effects of soil conditions and crop types on diversity of weed communities

2016

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The paper presents the diversity of weed communities growing in different crops (winter cereals, spring cereals, and tuber plants) and in diverse soil conditions. To determine weed diversity, phytosociological relevés were made. Simpson’s index of dominance and the Shannon index of biodiversity for weed communities in different crops growing in different soil conditions were calculated and compared. The highest values of the Shannon index and the lowest values of Simspon’s index of dominance were obtained for weed communities noted on compacted and semi-compacted soil with the following granulometric composition: silty loam with underlying sand at a depth of 100 cm, heavy silty sandy loam, silt with underlying sand at a depth of 50 cm, and silt with underlying sand at a depth of 100 cm. The highest index of dominance and low species diversity were determined for weed communities in light soils. The Shannon index of biodiversity was moderately positively correlated with soil pH and granulometric composition. Simpson’s index of dominance was moderately negatively correlated with granulometric composition and was weakly correlated with soil pH.

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Section: Discussionsupporting

confidence: 90%

“…Diversity indices are widely used to study biodiversity in agricultural crops. The indices are also used to determine changes in segetal communities [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

The effects of soil conditions and crop types on diversity of weed communities

2016

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“…A weed community composed of several species can be and often is more harmful than a more diversified community (Anyszka and Kohut 2011). In recent years, ecological indices of species diversity and domination have been used in studies on weed infestation of cropped fields (Shannon 1948;Simpson 1949;Stupnicka-Rodzynkiewicz et al 2004;Skrzyczyńska and Ługowska 2008;Rzymowska et al 2013;Ługowska and Rzymowska 2014).…”

Section: Introductionmentioning

confidence: 99%

Biodiversity of segetal weed community in continuous potato cultivated with metribuzin-based weed control

Pawlonka

Rymuza²,

Starczewski³

et al. 2015

Journal of Plant Protection Research

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The objective of the work reported here was to determine the relationship between herbicide rate and the biodiversity of weed communities in potato cultivated in continuous cropping. A seven-year field experiment was conducted to examine the effect of 4 metribuzin rates and an uncontrol on weed infestation in successive years of continuous potato cultivation. The following indices were calculated: the Shannon-Wiener and Simpson's indices of species diversity and the Simpson's index of domination. A total of 33 species were recorded in the experimental plots. Echinochoa crus-galli was the dominant species. The most abundant segetal communities were observed in untreated plots. An application of the herbicide reduced the biodiversity of the agrophytocenosis. Cultivation in continuous cropping increased the species number of the weed community in potato. The herbicide and cultivation in continuous cropping did not significantly affect the biodiversity indices but their values, to a great extent, confirmed the trends revealed by the analysis of weed infestation.

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“…The soils represent either a very good or good class of agricultural land suitability. Analysis of dominant species of the cropped land has been presented in a previous paper [13]. Thirty observations were made for each crop group.…”

Section: Methodsmentioning

confidence: 99%

The effect of the application of the exact and approximate methods on values of selected ecological indices

Ługowska

Rzymowska

2014

Acta Agrobot

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A b s t r a c tThe work presents the results of a study on the biodiversity of agrocenoses using ecological indices. In order to calculate the measures, phytosociological relevés were made and exact methods were applied in winter cereals, spring cereals, tuber crops and stubble fields. The objective of the work was to compare ecological indices (Simpson's index of dominance C, Simpson's index of species richness D, and Shannon-Wiener index of biodiversity H') calculated using the number of plants and their cover determined based on the degree of presence. Moreover, correlation analysis was conducted between the indices computed using the two approaches applied.The results of the study revealed significant differences between all the indices calculated using the exact and approximate methods. In turn, comparisons of the measures computed for individual crops showed significant differences only for potato crops and winter cereals. No significant differences were found between the indicators calculated for spring cereals and stubble fields.

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Species diversity of segetal communities in tuber crops and in winter and spring cereals

Cited by 4 publications

References 8 publications

The effects of soil conditions and crop types on diversity of weed communities

The effects of soil conditions and crop types on diversity of weed communities

Biodiversity of segetal weed community in continuous potato cultivated with metribuzin-based weed control

The effect of the application of the exact and approximate methods on values of selected ecological indices

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