Long-term effects of crop rotation and fertilizers on weed community in spring barley
Integrated weed management programs require a clear understanding of the mechanisms influencing the establishment, growth, and reproduction of unwanted plants (weeds) in agro-ecosystems. This study evaluates the effect of long-term (95 years after the establishment of the site) crop rotation and chemical fertilizers on the weed community dynamics in spring barley at the Agricultural University of Timiriazev, Agricultural Site in Moscow. The weed community occurring on plots of spring barley (grown in crop rotation or continuous) was examined under nitrogen, potassium, phosphorus, NPK, and a control with no fertilizer treatments. Statistical analyses were conducted using analysis of variance (ANOVA) and principal component analysis (PCA). The results show that a) at the study sites, spring weeds are dominant components on agro-ecosystems; b) weed density, particularly of perennials, has significantly decreased under crop rotation; c) the combination of fertilizers (NPK) also decreased the weed density, d) weed density under separate N, P, and K applications was almost the same as that in the control plots. These results suggest that long-term crop rotation and NPK application can strongly affect and reduce weed density in spring barley.
Long-term effects of crop rotation and fertilizers on weed community in spring barley
Integrated weed management programs require a clear understanding of the mechanisms influencing the establishment, growth, and reproduction of unwanted plants (weeds) in agro-ecosystems. This study evaluates the effect of long-term (95 years after the establishment of the site) crop rotation and chemical fertilizers on the weed community dynamics in spring barley at the Agricultural University of Timiriazev, Agricultural Site in Moscow. The weed community occurring on plots of spring barley (grown in crop rotation or continuous) was examined under nitrogen, potassium, phosphorus, NPK, and a control with no fertilizer treatments. Statistical analyses were conducted using analysis of variance (ANOVA) and principal component analysis (PCA). The results show that a) at the study sites, spring weeds are dominant components on agro-ecosystems; b) weed density, particularly of perennials, has significantly decreased under crop rotation; c) the combination of fertilizers (NPK) also decreased the weed density, d) weed density under separate N, P, and K applications was almost the same as that in the control plots. These results suggest that long-term crop rotation and NPK application can strongly affect and reduce weed density in spring barley.
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- Aldrich, R.J. 1984. Crop production practices and weeds. In: Weed- Crop Ecology: Principles in Weed Management. (Ed. R.J. Aldrich), Breton Publ., North Scituate, MA. pp. 373-398.
- Alkamper, J. 1976. Influence of weed infestation on effect of fertilizer dressings. Pflanzen.-Nachr. Bayer. 29: 191-235.
- Altieri, M. A. and M. Liebman. 1988. Weed management in agroecosystem: Ecological approaches. CRC Press Inc. Boca Raton, Florida.
- Black, A. and A. Bauer. 1990. Sustainable cropping systems for the Northern Great Plains. In: Proceeding of the Great Plains Conservation Tillage Symposium Bismarck, ND, pp. 15-21.
- Blackshaw, R.E., F.O. Larney, C.W. Lindwall and G.C. Kozub. 1994. Crop rotation and tillage effect on weed populations on the semi-arid Canadian prairies. Weed Technol. 8: 231-237.
- Blackshaw, R.E., G. Semach and H.H. Janzen. 2002. Fertilizer application method affects nitrogen uptake in weeds and wheat. Weed Sci. 50: 634-641.
- Blackshaw, R.E., R.N. Brandt, H.H. Janzen, T. Entz, C.A. Grant and D.A. Derksen. 2003. Differential response of weed species to added nitrogen. Weed Sci. 51: 532-539.
- Blackshaw, R.E., Molnar, L.J. and Janzen, H.H. 2004. Nitrogen fertilizer timing and application method affect weed growth and competition with spring wheat. Weed Sci. 52: 614-622.
- Carlson, H.L. and J.E. Hill. 1986. Wild oat (Avena fatua) competition with spring wheat: effects of nitrogen fertilization. Weed Sci. 34: 29-33.
- Derksen, D.A., G.P. Lafond, A.G. Thomas, H.A. Loeppky and C.J. Swanton. 1993. Impact of agronomic practices on weed communities: tillage systems. Weed Sci. 41: 409-417.
- Dhima, R.V. and I.G. Eleftherohorinos. 2001. Influence of nitrogen on competition winter cereals and sterile oat. Weed Sci. 49: 77- 82.
- Donald, W.W. and J.D. Nalewaja, 1990. Northern Great Plains. In: Systems of Weed Control in Wheat in North America. (Ed. W.W. Donald), Weed Sci. Soc. Am. Champaign IL., pp. 90-126.
- Dusky, J.A., J.W. Shrefler, D.G. Shilling, B.J. Brecke, D.L. Colvin, C.A. Sanchez and W.M. Stall. 1996. Influence of phosphorus fertility on competition between lettuce and Amaranthus spinosus L. In: Proceeding of the 2ndInternational Weed Control Congress, Denmark, pp. 141-145.
- Gill, K.S. and M.A. Arshad. 1995. Weed flora in early growth period of spring crops under conventional, reduced, and zero tillage systems on a clay soil in northern Alberta, Canada. Soil tillage Res. 33: 65-79.
- Haas, H. and J.C. Streibig, 1982. Changing patterns of weed distribution as a result of herbicide use and other agronomic factors. In: Herbicide Resistance in Plants. (Eds.: H.M. LeBaron and J. Gressel). John Wiley and Sons, New York. pp. 57-79.
- Hume, L. 1982. The long-term effects of fertilizer application and three rotations on weed communities in wheat (after 21 years at Indian Head, Saskatchewan). Can. J. Plant Sci. 62: 741-750.
- Hume, L., S. Tessier and F.B. Dyck. 1991. Tillage and rotation influences on weed community composition in wheat (Triticum aestivum L.) in southwestern Saskatchewan. Can. J. Plant Sci. 71: 783-789.
- Liebman, M. and R.H. Robichaux. 1990. Competition by barley and pea against mustard: Effects on resource acquisition, photosynthesis and yield. Agric. Ecosyst. Environ. 31: 155-172.
- Maiksteniene, S. and A. Arlauskiene. 2006. The effect of agricultural management systems on the weed incidence in cereals. Agron. Res. 4: 281-285.
- Mennan, H. and D. Isik. 2003. Invasive weed species in onion production systems during the last 25 years in Amasya, Turkey. Pak. J. Bot. 35: 155-160.
- Mohammaddoust Chamanabad, H.R., A.M. Tulikov and M.A. Baghestani. 2006. Effect of Long-term fertilizer application and crop rotation on the infestation of fields by weed. Pak. J. Weed Sci. Res. 12: 221-234
- Peterson, D.A. and J.D. Nalewaja. 1992. Environment influences green foxtail competition with wheat. Weed Technol. 6: 607-610.
- Peterson, G.A., D.G. Westfall and C.V. Cole. 1993. Agroecosystem approach to soil and crop management research. Soil Sci. Soc. Am. J. 57: 1354-1360.
- Qasem, J.R. 1992. Nutrient accumulation by weeds and their associated vegetable crops. J. Hortic. Sci. 67: 189-195.
- Schreiber, M.M. and P.L. Orwick. 1978. Influence of nitrogen fertilizer on growth of foxtail (Setaria) taxa. Weed Sci. 26: 547-550.
- Schweitzer, K., B. Mullin, D. Wichman and J. Nelson. 1988. Survey of weeds in conservation and conventionally tilled grain fields in Montana. Proc. West. Soc. Weed Sci. 41: 133-143.
- Sindel, B.M. and P.W. Michael. 1992. Growth and competitiveness of Senecio madagascariensis Poir. (Fireweed) in relation to fertilizer use and increases in soil fertility. Weed Res. 32: 399-406.
- Thomas, A.G. and B.L. Frick. 1993. Influence of tillage systems on weed abundance in Southwestern Ontario. Weed Technol. 7: 699-705.
- Tollenaare, M., S.P. Nissanka, A. Aguilera, S.F. Weise and C.J. Swanton. 1994. Effect of weed interference and soil nitrogen on four maize hybrids. Agron. J. 86: 596-601.
- Tulikov, A.M. and V.M. Sugrobov. 1984. Role of long-term application fertilizer, lime and crop rotation in change infestation field by weeds. Izvestia ТСХА. 2: 32-36.