The effect of mulching on the abundance and diversity of ground beetle assemblages in two hungarian potato fields

Authors

  • Péter Dudás Institute of Plant Protection, Faculty of Agricultural and Environmental Sciences, Szent István University, Hungary, H-2100 Gödöllő, Páter Károly u. 1
  • Csongor Gedeon Department of Agrochemistry and Plant Nutrition, Institute for Soil Sciences and Agricultural Chemistry, Centre for Agricultural Research, Hungarian Academy of Sciences, Hungary, H-1022 Budapest, Herman Ottó út 15
  • László Menyhárt Department of Economic Methodology, University of Pannonia Georgikon Faculty, H-8360 Keszthely, Deák Ferenc u.16
  • Gergely Ambrus Institute of Plant Protection, Faculty of Agricultural and Environmental Sciences, Szent István University, Hungary, H-2100 Gödöllő, Páter Károly u. 1
  • Ferenc Tóth Institute of Plant Protection, Faculty of Agricultural and Environmental Sciences, Szent István University, Hungary, H-2100 Gödöllő, Páter Károly u. 1

DOI:

https://doi.org/10.18380/SZIE.COLUM.2016.3.1.45

Keywords:

potato, leaf litter mulch, hey mulch, pitfall trap, Carabidae

Abstract

The benefits of mulching in potato (Solanum tuberosum L.) production are manifold, such as it provides shelters for natural enemies of pests. The aim of our study was to detect the effect of two organic mulch types on the abundance, diversity and species composition of carabid beetles. Our potato plots were located in two sites with similar habitats including similar soil characteristics. Each plot was treated with hay and leaf litter mulch (hay, leaf, control) with 4 replications at each site. It resulted in 24 samples in each study site annually. Carabid beetles were collected by using pitfall traps in between 2011-2013. We found that due to mulching a larger and more diverse carabid population occurred on potato plots. Both mulching types increased the total number of carabids captured having a 17% higher abundance on hay mulched plots and 14% higher abundance on leaf litter mulched plots. According to the results 28 % of the collected species was found only on mulched plots, whereas only 13 % of the captured species were found only on unmulched areas. For some of the species, especially for Brachinus crepitans (L.), the number of individuals was significantly higher on mulched plots. The two different mulching materials had very similar effects on assemblages of carabid species. The species composition of ground beetles was considerably affected by the two locations, and to a lesser extent by the different time periods. While the dominant species of Budaörs was B. crepitans, the most abbundant carabid beetle at Hidegkút belonged to genus Harpalus. Neither hay nor leaf litter were able to constantly increase the biodiversity of the carabid assemblages on potato plots, because the effect of the two years overwrote the between-treatment effects on carabid diversity. The positive effect of organic mulching on carabid diversity however, was found significant in both years of 2011 and 2012.

Author Biography

  • Péter Dudás, Institute of Plant Protection, Faculty of Agricultural and Environmental Sciences, Szent István University, Hungary, H-2100 Gödöllő, Páter Károly u. 1

    dudpet@gmail.com
    corresponding author

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Published

2016-07-02

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Article

How to Cite

The effect of mulching on the abundance and diversity of ground beetle assemblages in two hungarian potato fields. (2016). COLUMELLA – Journal of Agricultural and Environmental Sciences, 3(1), 45-53. https://doi.org/10.18380/SZIE.COLUM.2016.3.1.45

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