Evaluation of relation between weed population and nitrogen use efficiency in wheat as affected by integrated fertilizer management

Document Type : Scientific - Research


Shahid Chamran University, Ahvaz


In order to evaluation of relation between weed dynamic and utilization of nitrogen in weed as influence of integrated fertilizer management in different weed densities, a field experiment was carried out in experimental farm of Agricultural Faculty of Shahid Chamran university of ahvaz at 2011-2012 growing season. Experimental design was based on a split-plot with three replications .Main plot was 5 integrated fertilizer managements and sub plot was 3 weed densities. Our results showed that the treatment 75% chemical fertilizer whit Biological fertilizer in lower weed density had the highest weed density and dry weight. Narrow leaf and broad leaf weeds was dominant species in 100% chemical fertilizer and 100% biological fertilizer Treatments, respective. Also, weed diversely was reduced by reduction. So, Treatment 100% biological fertilizer had the highest weed density nitrogen fertilizer utilization efficiency was increased by reduction of nitrogen chemical fertilizer. In addition, all nitrogen useefficiency. Indices were more affected by nitrogen chemical fertilizer, than weed density. Based on our results,increasing dependence to biological fertilizer, will reduce is the compatibility of wheat plant, in early growth period, which caused increasing in density and decreasing of weed at the wheat growth period.


1. Aynehband, A., Moezi, A.A., and Sabet, M. 2011. The comparison of nitrogen use efficiencies in old and modern wheat cultivars: agroecological results. American-Eurasian Journal of Agricultural and Environmental Science 10(4): 574-586.
2. Behdarvand, P., Chinchanikar, G., and Dhumal, K. 2012. Influences of different nitrogen levels on competition between spring wheat (Triticum aestivum L.) andwild mustard (Sinapis arvensis L.). Journal of Agricultural Science 4(12): 134-139.
3. Blackshaw, R.E., Brandt, R.N., and Grant, C.A. 2003. Differential response of weed species to added nitrogen. Weed Science 51: 532- 539.
4. Carlson, H.L., and Hill, J.E. 1986. Wild oats (Avena fatua L.) competition with spring wheat: Effects of nitrogen fertilization. Weed Science 34: 29-33.
5. Davis, A., and Liebman, M. 2001. Nitrogen source influences wild mustard growth and competitive effect on sweet corn. Weed Science 49: 558-566.
6. Dhimia, K., and Eleftherohorinos, I. 2005. Wild mustard (Sinapis arvensis L.) competition with three winter cereals as affected by nitrogen supply. Journal of Agronomy and Crop Science 191: 241-248.
7. Gastal, F., and Lemaire, G. 2002. N uptake and distribution in crops: anagronomical and ecophysiological perspective. Journal of Experimental Botany 53: 789-799.
8. Hashem, A., Radosovich, S.R., and Dick, R. 2000. Competition effects on yield, tissue nitrogen, and germination of winter wheat (Triticum aestivum L.) and Italianray grass (Lolium multiflorium L.). Weed Technology 14: 718-725.
9. Hodge, A., Robinson, D., Griffiths, B.S., and Fitter, A.H. 1999. Why plants bother: root proliferation results in increased nitrogen capture from an organic patch when two grasses compete. Plant, Cell and Environment 22: 811-820.
10. Huggins, D.R., and Pan, W.L. 2003. Key indicators for assessing nitrogen use efficiency in cereal-based agro ecosystems. Special edition of Journal of Crop Production 8(1-2): 157-186.
11. Karimi, H. 1381. Wheat. Publication of Tehran University Publication Center, Tehran, Iran 599 pp. (In Persian)
12. Kim, D.S., Marshall, E.J.P, Brain, P., and Caseley, J.C. 2006. Modeling the effects of sub-lethal doses of herbicide and nitrogen fertilizer on crop-weed competition. Weed Research 46: 492- 502.
13. Lopez-Bellido, R.J., and Lopez-Bellido, L. 2001. Efficiency of nitrogen in wheat under Mediterranean conditions: effect of tillage, crop rotation and N fertilization. Field Crops Research 71: 31–46.
14. Malakoti, M.J. 1378. Sustainable agriculture and enhance performance optimization of fertilizer use. Publications Education Publications Agriculture Karaj. p. 224. (In Persian)
15. Mennan, H. 2003. Economic of Sinapis arvensis L. (Wild Mustard) in winter wheat fields. Pakistan Journal of Agronomy 2(1): 34-39.
16. Nicotra, A.B. and Rodenhouse, N.L. 1995. Intra-specific competition in Chenopodium album varies with resource availability. Nicotra, A.B. and Rodenhouse, N.L. 1995. Intra-specific competition in Chenopodium album varies with resource availability. American Midland Naturalist Journal 134: 90.
17. Rezvani Moghaddam, P., Aminghafori, A., Bakhshaie, S., and Jafari, L. 2013. The effect of organic and biofertilizers on some quantitative characteristics and essential oil content of summer savory (Satureja hortensis L.). Journal of Agroecology 5(2): 105-112.
18. Singh, M., Singh, A., Singh, S., Tripathi, R.S., Singh, A.K., and Patra, D.D. 2010. Cowpea (Vigna unguiculata L. Walp.) as a green manure to improve the productivity of menthol mint (Mentha arvensis L.) intercropping system. Industrial Crops and Products 31: 289–293.
19. Siyahpoosh, A., and Fathi, G., and Zand, E. 2012. Competitiveness of different densities of two wheat cultivars with wild mustard weeds species (Sinapis arvensis L.) in different densities. World Applied Science Journal 20(5): 748-752.