Biodiversity and Biomass Production of Weeds in a Long-Term Fertilization Experiment |
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| Authors: | Éva Lehoczky Gellért Gólya János Tamás Tamás Németh |
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| Affiliation: | 1. Institute for Soil Science and Agricultural Chemistry, Center for Agricultural Research, Hungarian Academy of Sciences, Budapest, Hungarylehoczky.eva@agrar.mta.hu;3. Institute for Soil Science and Agricultural Chemistry, Center for Agricultural Research, Hungarian Academy of Sciences, Budapest, Hungary;4. Institute of Water and Environmental Management, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, Debrecen, Hungary |
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| Abstract: | A field experiment was carried out to study the influence of nitrogen (N), phosphorus (P), and potassium (K) nutrient supply on weed flora in maize. The investigations were conducted in a long-term fertilization experiment launched in 2003 on a loamy chernozem soil with lime deposits, in Fejér County, Hungary. The composition, biomass weight, and density of weeds were determined in relation to different nutrient supplies. Seventy-five percent of weeds consisted of three species: Ambrosia artemisiifolia L., Datura stramonium L., and Helianthus annuus L. Density of weeds varied relative to the different nutrient treatments, with a range of 82–131 plants m?2. The total weed density was significantly lower by 19.9–37.8 percent in the N-containing treatments (NP, NPK) than in non-N treatments. The density of the nitrophil D. stramonium L., Chenopodium album L., Chenopodium hybridum L., and Amaranthus blitoides S. Watson was higher when N supply was greater. |
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| Keywords: | Biomass production maize nutrient supply weed biodiversity weed density |
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