In collaboration with Iranian Phytopathological Society

Authors

Abstract

In order to study the competitiveness of potato varieties against weeds, a field experiment was conducted in 2002 at agricultural research center of Hamedan. The experimental design was split plot in complete randomized blocks with four replications. In main plot, there were seven potato varieties (with variance in reaching), and subplots were divided into two treatments, one, with weeding, another without weeding. In this experiment, weed had natural growth. The results showed that medium-late varieties such as Cosmos and Diamante with the highest Competitive Index (CI) were competitor, Agria and Moren medium-late and lateseason varieties with the same CI were semicompetitor and Novita with the lowest CI was the weakest variety. The analysis of Ability of Withstand Competition (AWC) showed the medium-late and lateseason varieties such as Agria, Cosmos, Diamante and Moren (lateseason) were more tolerant varieties and on the other hand medium-early varieties such as Novita, Draga and Marfona had the lowest AWC so were recognized as sensitive varieties against weeds.
 
 

Keywords

REZAEE, A., A. SOLTANI, 1996. Introduction to potato (Solanum tuberosum) Production Jihad-e Daneshgahi press of Mashhad. 179 pp. (Farsi translation by A. Rezaee and A. Soltani)
BURNSIDE, O. C. 1970. Progress and portentical for nonherbicidal control of weed through preventive weed control. In FAO International Conference on Weed Control, ed. J. T. Holstum, Jr. Urbana, IL: Ameriean Weed Sci. Soc., pp. 464-483.
BUSSAN, A. J., O. C. BURNSIDE, J. H. ORF, E. A. RISTAU and K. J. PUETTMANN, 1997. Field evaluation of Soybean (Glycine max) genotypes for weed competitiveness. Weed. sci. 45: 31-37.
CHALLAIAH, R. E., G. A. WICKS, O. C. BURNSIDE and A. V. JOHNSON, 1983. Evaluation of competitive ability of winter wheat cultivars. Proc. North Cent. Weed Cont. Conf. 38: 85-91.
FRICK, B. and E. JOHNSON, 2002. Growing a competitive crop-first step in weed control. Canada-Saskatchewan Agri-Food Innovation Fund. 123-124
HADIZADEH, M., H. RAHIMIAN MASHHADI, 1998. The critical period of weed control in soybean. Iranian journal of plant pathology. Vol. 34.
JAVANBAKHT HESAR, M. 1996. Determine the critical weed control period in potato (Solanum tuberosum) at Bajgah area in Shiraz. M. S. Thesis, Agricultural college of Shiraz university (In Persian with English summary).
JORDAN, N. 1993. Prospects for weed control through weed suppression. Ecological Applications. 3: 84-91.
LEMERLE, D., G. S. GILL, C. E. MURPHY, S. R. WALKER, R. D. COUSENS, S. MOKHTARI, S. J. PELTZER, R. COLEMAN and D. J. LUCKETT, 2001. Genetic improvement and agronomy for enhanced wheat competitiveness with weeds. Aust. J. Agric. Res., 52: 527-578
MURPHY, R., S. R. WALKER, R. D. COUSENS, S. MOKHTARI, S. J. PELTZER, R. COLEMAN and D. J. LUCKETT, 2001. Genetic improvement and agronomy for enhanced wheat competitiveness with weeds. Aust. J. Agric. Res. 52: 527-578
NELSON, D. C. and M. C. THORESON, 1981. Competition between Potatos (Solanum tuberosum) and weeds. Weed. sci. 29: 672-677.
NELSON, D. C. and J. F. GILES, 1989. Weed management in two potato (Solanum tubersoum) cultivars using tillage and pendimethalin. weed sci. 37: 228-232.
NIVAA, T. 1997. Netherlands catalogue of potato varieties.
NGOUAJIO, M., E. MILTON, Jr. MCGIFFEN and K. J. HEMBREE, 2001. Tolerance of tomato cultivars to velvet leaf interference. Weed Sci. 49: 91-98.
PARISH, S. 1990. A review of non chemical weed control techniques. Biol. agric. Hort. 7: 117-137.
RABY, B. J. and L. K. BINNING, 1985. Weed competition study in "Russet Burbank" and "Superior" potato (Solanum tuberosum) with different management practices. Proc. North Cent. Weed Control. Conf. 40:4
SHIRKHANI, A. 2001. Evolution of dry land pea competitiveness in different density of common weeds. M.S. Thesis, Agricultural college of Tehran university .137pp. (in Persian with English summary).
SWEET, R. D., C. P. Yip and J. B. Sieczku, 1974. Crop varieties can they suppress weeds? NY Food Life Sci. Q. 7: 3-5.
TODD, A. P., C. B. ORVIN and H. O. JAMES, 1999. Increasing crop competitiveness to weed through crop breeding. In Expanding the context of weed management. Douglas, D. B (eds) Food products press. pp: 59-72
VAN HEEMST, H. D. J. 1985. The influence of weed competition on crop yield. Agricultural systems. 18: 81-93
VANGESSEL, M. J. and K. A. RENNER, 1990. Effect of soil type, hilling time and weed interference on Potato (Solanum tuberosum) development and yield. Weed tech. 4: 299-305.
WASTON, P. R., D. A. DERKSEN., R. C. VAN ACKER., B. IRVINE., M. C. THERRIEN, M. H. ENTZ, 2002. The contribution of seed, seedling, and mature plant traits to barley cultivar competitiveness against weeds. pp.152-157
ZAND, E. 2000. The ecophysiological basis of the genetic improvement of Iranian wheat from 1956 to 1995. Ph.D. Thesis, Ferdwosi University of Mashhad, Mashhad, Iran.
ZAND, E. and H. J. BECKIE, 2001. Competitive ability of hybrid and open pollinated canola (Brassica napus) with wild oat (Avena fatua). Can. J. Plant Sci. 82: 473-480.