عنوان مقاله [English]
Winter weeds have different emergence flashes in field and response to this question whether there is flash emergence after applying herbicide, can be effective in the selection of right time for weed control. Therefore, emergence pattern of the wild oat seedlings was studied for three years from 2011 to 2014 in cereal fields of Fars province. The cumulative emergence pattern of wild oat during 2011-2012 showed that 50% of emergence occurred at growing degree days (GDD) of 115. The emergence percent revealed that 21.09, 45.00, 19.37 and 2.43% seeds respectively at GDD of 99.25, 136.75, 180 and 220 were emergence. The emergence pattern in 2012-2013 crop years also showed that a GDD of 127 was required for 50% emergence. This amount for 2013-2014 crop years was 146 GDD. With regard to the contamination and presence of wild oats in the fields, final results of this study showed that the hypothesis of various flashes after the herbicide application is rejected. All the weed seedlings emerge in in fields during the first month after planting.
Anderson, R.L. and Nielsen, D.C. 1996. Emergence pattern of five weeds in the Central Great Plains. Weed Technol. 10:744–749
Andersson, L. and Milberg, P. 1998 .Variation in seed dormancy among mother plants, populations and years of seed collection. Seed Sci Res. 8: 29–38.
Andrew, P., Gutierrez, A. Michael, J. Pitcairn, B. Ellis, A. and Nada, C. 2005. Biology and control of Phalaris minor Retz (littleseed canarygrass) in wheat. Biological Control. 34: 115–131.
Balestri, E. and Cinelli, F. 2004. Germination and early-seedling establishment capacity of Pancratiummaritimum L.(Amaryllidaceae) on coastal dunes in the North-Western Mediterranean. J. Coastal Res.; 203: 761–770.
Baskin, C.C. and Baskin, J.M. 1988. Germination Eco physiology of herbaceous plant species in a temperature region. Am. J. Bot. 75:286–305
Benvenuti, S., Macchia, M. and Miele, M. 2001. Light, Temperature and Burial depth effects on Rumexobtusifolius L. seed germination and emergence Weed Res. 41: 177-186.
Black, I.D. and Dyson, C.B. 1997. A model of the cost of delay in spraying weeds in cereals. Weed Res. 37:139–146.
Boyd, N. and Van Acker, A. 2004. Seed and microsite limitations to emergence of four annual weed species. Weed Sci. 52: 571-577
Buhler, D.D. 1997. Effects of tillage and light environment on emergence of 13 annual weeds. Weed Technol. 35: 1247-1258.
Buhler, D.D., Liebman, M. and Obrycki, J.J. 2000. Theoretical and practice challenges to an IPM approach to weed management. Weed Sci. 48:274–280.
Cici, S.Z.H. and Van Acker, R.C. 2009. A review of the recruitment biology of winter annual weeds in Canada. Can. J. Plant. Sci. 89:575–589
Conley, S.P., Binning, L.K., Boerboom, C.M. and Stoltenberg, D.E. 2003. Parameters for predicting giant foxtail cohort effect on soybean yield loss. Agron. J. 95:1226–1232.
Fennimore, S.A., Wyman, E.N. Gregory, E.S., Stanley, P.M. and Foley, M.E. 1998.Temperature response in wild oat (Avena fatua L.) generations segregating for seed dormancy.Heredity 81, 674–682 .
Finch-Savage, W., Phelps, K., Steckel, J., Whalley, W. and Rowse, H. 2001. Seed reserve-dependent growth responses to temperature and water potential an Carrot(Daucus carota L.). J. Exp. Bot, 51: 2187-2197.
Forcella, F. 1993. Seedling emergence model for velvetleaf. Agron. J. 85: 929–933.
Forcella, F., Benech-Arnold, R.L. Sanchez, R. and Ghersa, C.M. 2000. Modeling seedling emergence. Field Crops Res. 67: 123-139
Forcella, F., Eradat-Oskoui, K. and Wagner, S.W. 1993. Application of weed seedbank ecology to low-input crop management. Ecol. Appl. 3: 74–83.
Harper, J.L. 1977. Population Biology of Plants. Academic Press, London. 892pp.
King, C.A. and Oliver, L.R. 1994. A model for predicting large crabgrass (Digitaria sanguinalis L.) emergence as influenced by temperature and water potential. Weed Sci. 42: 561.
Knezevic, S.Z., Wiese, S.F. and Swanton, C.J. 1994. Interference of redroot pigweed (Amaranthusretroflexus) in corn (Zea mays). Weed Sci. 42:568–573.
Martinson, K., Durgan, B., Forcella, F., Wiersma, J., Spokas, K. and Archer, D. 2007. An Emergence Model for Wild Oat (Avena fatua) Weed Sci. 55:584–591
Nazari Alam, J., Alizadeh, H., Rahimian Mashhadi, H., Mousavi, S.K. Soheil Nejad, A.M. 2011. Seed dormancy and emergence pattern of ground cherry (Physalisdivaricata) in sugar beet and wheat farms of Alashthar, J. Suger Beet. Vol 26, I,2, Spring and Summer. 138-127.(in Persian with English summary)
O’Donovan, J. T., de St Remy, E. A., O’Sullivan, P.A., Dew, D.A. and Sharma, A.K. 1985. Influence of the relative time of emergence of wild oat (Avena fatua) on yield loss of barley (Hordeum vulgare) and wheat (Triticum aestivum). Weed Sci. 33:498–503.
Radosevish, S., Holt, J. and Ghersa, C. 1997 Weed Ecology. 2nd edn. New York: J Wiley. 589 p
Schutte, J.B., Regnier, E.E., Sharison, K., Schmoll, J.T., Spokas, K. and Forcella, F. 2008. A hydrothermal seedling emergence model for Gaint Ragweed (Ambrosia trifida L.). Weed Sci, 56: 555-560.
Sharma, M.P., McBeath, D.K. and Vanden Born, W.H. 1976. Studies of the biology of wild oat. I. Dormancy, germination and emergence. Can. J. Plant Sci. 56:611–618.
Spandl, E., Durgan, B.R. and Forcella, F. 1998. Tillage and planting date influence foxtail (Setaria spp.) emergence in continuous spring wheat (Triticum aestivum). Weed Technol. 12: 223-229.
Yousefi, A., Rastgoo, M., Ghanbari Motlagh, M. and Ebrahimi, M. 2013. Predicting Seedling Emergence of Flixweed (Descurainia sophia (L.) Webb.) and Hoary cress (Cardaria draba (L.) Desv.) in Rapeseed (Brassica napus) Field in Zanjan Conditionsd .J. Plant Protect. Vol. 27, No. 1, Spring 48-54. (in Persian with English summary)