Department of Environmental Engineering,
Hangzhou, 310029, China;
FG Post Graduate College sector H-8,
Department of Math/Stat/Computer Science,
N.W.F.P. Agric. University,
College of Agriculture and Biotechnology,
Hangzhou 310029, China.
College of Environment and Nutural Resource, Zhejiang University, Hangzhou 310029, China
Department of Agronomy, College of Agri. & Biotech., Zhejiang University, Hangzhou,
Department of Weed Science, N.W.F.P. Agricultural University, Peshawar,
Weed Science Program, National Agricultural Research Center Islamabad,
Poaceous weeds are prolific and competitive in winter crops, but they are more insidious in wheat due to their similar morphology and growing requirements. Herbicides are effective and efficient tools of weed management, however, they are vulnerable to resistance, and herbicides with different modes of action might check the dominance of a particular weed flora. The current study was undertaken to see the response of three poaceous weeds viz., Phalaris minor, Avena fatua and Lolium temulentum, to herbicides Isoproturon, Topik (Clodinafop-p) and Puma Super (Fenoxaprop-p). Completely randomized design with two factor treatments (weeds, herbicides) and eight replications was employed. Data were recorded on chlorotic and necrotic effects of herbicides on weeds, and percent mortality at the time interval of 14, 21 and 28 days after the application of herbicides. Dry biomass weight of weeds was recorded at 30 days after the treatments. Results indicated that all the parameters were affected significantly over the period of time. Maximum counts of chlorotic (2.16) and necrotic (2.97) weeds were observed at the 21st day of treatment. The highest mortality (31.1 %) was recorded at 21st day after the application of herbicides. Phalaris minor was the most resistant weed to herbicides showing the lowest mortality (only 17.7 %) compared to other two weeds. Maximum dry weight of weeds was recorded in control while a minimum of 0.456 g dry weight was observed where Topik (Clodinafop-p) was applied. For the effective control of P. minor, A. fatua and L. temulentum weeds in wheat crop, Topik (15 WP) @ 0.37 kg a.i. ha-1 was proved to be the most suitable herbicide applied at 3-4 foliar stage.
Angiras, N. N., Sharma, V. and Sherma, V. (1996) Influence of row orientation, row spacing and weed control methods & physiological performance of irrigated wheat (Triticum aestivum L.). Indian J. Agri. l Sci. 41, 41- 47.
Balyan, R. S., Malik, R. K., Dhankar, R. S. and Singh, S. M. (1994) Effect of time and method of isoproturon application on weeds in wheat. Haryana Agric. Univ. J. Res. 24, 158- 162.
Chancellor, R. J. (1979) The long-term effects of herbicides on weed populations. Annals of Applied Biol. 91, 141– 144.
Chhokar, R. S., Chauhan, D. S., Sharma, R. K., Singh, R. K. and Singh, R. P. (2002) Major Weeds of Wheat and Their Management. Research Bulletin No. 13, Directorate of Wheat Research, Karnal, India.16 pp.
Chhokar, R. S., Sharma, R. K., Chauhan, D. S. and Mongia, A. D. (2006) Evaluation of herbicides against Phalaris minor in wheat in north-western Indian plains. Weed Res. 46, 40– 49.
Dhawan, R. S. (1995) Effect of isoproturon on Hill activity and membrane permeability in leaves of wheat (Triticum aestivum), small canary grass (Phalaris minor) and wild oat (Avena Iudoviciana). Indian J. Agri. Sci. 65, 894-8 95.
Ghafoor, A., Shad, R. A. and Sher, M. A. (1987) Ten most important weeds in Pakistan. Prog. Farming 7, 17- 20.
Hassan, G. and Marwat, K. B. (2001) Integrated Weed Management in Agricultural Crops. National Workshop on Technologies for Sustainable Agriculture. Sept. 24-26, 2001, NIAB, Faisalabd, Pakistan.
Jones, R. and Medd, R. (1997) Economic analysis of integrated management of wild oats involving fallow, herbicide and crop rotational options. Aust. J. Expt. Agri. 37, 683– 691.
Khan, M. and H. Noor (1995). Weeds of wheat crop and their control. Div. of Com. Services. NWFP Agric. Univ. Peshawar.
Khan, N., Hassan, G., Khan, M. A. and Khan, I. (2003) Efficacy of different herbicides for controlling weeds in wheat crop at different times of application–I. Asian J. Plant Sci. 2, 305-309.
Khan, N. U., Khan, S. U., Hassan, G., Khakwani, A.A. and Nawaz, Q. (2001) Studies on chemical weed control measures in wheat (Triticum aestivum L.). J. Biol. Sci. 1, 584- 586.
Malik, R. K. and Singh, S. (1995) Littleseed canarygrass (Phalaris minor Retz.) resistance to isoproturon in India. Weed Tech. 9, 419– 25.
Manning, T. H., Palmer, J. J. and Hewson, R. T. (1993) Weed control in wheat with Hoe 1028-a combination of fenoxaprop-p-ethyl and isoproturon. Brighten Crop Protection Conference. 9, 597-600. CAB Abstracts 1/93- 12/94.
Masood, M., Jan, M. T. and Shamsi, I. H. (2002) Impact of nitrogen fertilizer, their levels, application time and weeding methods on yield and yield components of wheat. Asian J. Plant Sci. 1, 361- 363.
Pervaiz, K. and Quazi, M. H. (1992) Status of food production in Pakistan. Prog. Farming 12, 5. Pingali, P.L. (1999) CIMMYT 1998-99. World Wheat Facts and Trends. Global Wheat Research in a Changing World: Challenges and Achievements. Mexico, D. F. CIMMYT.
Singh, S., Kirkwood, R.C. and Marshall, G. (1999) Biology and control of Phalaris minor Retz. (littleseed canarygrass) in wheat. Crop Protection 18, 1- 16.
Singh, S. and Malik, R. K. (1992) Weed management and fertiliser utilization. Fert. News 37, 59- 63.
Shamsi, I. H., Khan, S., Farid, S. and Hussain, S. Z. (2001) Effect and economics of weed management practices on yield and yield components of wheat. Pak. J. Biol. Sci. 1, 20- 22.
Steel, R. G. D. and Torrie, J. H. (1980) Principles and Procedures of Statistics. McGraw Hill Book Co., New York, USA.
Stokosa, A., Janeczko, A., Skoczowski, A. and Kie, J. (2006) Isothermal calorimetry as a tool for estimating resistance of wild oat (Avena fatua L.) to aryloxyphenoxypropionate herbicides. Thermochimica Acta 441, 203–206.
Tysoe, R.H. (1975) The control of Avena fatua in winter sown cereals with chlorotoluron. Weed Abst. 24, 34.
Walia, U. S. and Gill, H.S . (1985) Interactions between herbicides and nitrogen in the control of Phalaris minor in wheat. Trop. Pest Management 31, 226-231.
Welch, C. and Ross, M. A. (1997) Effect of glyphosate, glufosinate and 2, 4-D on Canada thistle. Proc. North Central Weed Sci. Soc. 52, 33-35.