Field study was conducted at experimental farm of Punjab Agricultural University ,Ludhiana (India) during rabi seasons of 2004-05 and 2005-06. The experiment was laid out in randomized block design with fourteen treatments having combination of seven different crops viz. bread wheat, durum wheat, six - rowed barley, two-rowed barley, raya, gobhi sarson, linseed and two weed control treatments i.e. hand weeded and unweeded. The study was planned with an objective to find out the most suitable Rabi crop that can suppress the weeds to maximum extent with minimum reduction in yield as there was no herbicide available which can control the weeds in an effective manner. Minimum weed dry matter accumulation was observed in raya (0.97qha-1 in the weeded plot) whereas maximum dry matter accumulation was observed in bread wheat (8.3qha-1), followed by durum wheat (6.1qha-1), linseed(5.0qha-1), barley (6-row) (4.9qha-1), barley (2-row) (2.6qha-1) and gobhi sarson (2.4qha-1). Raya (Brassica juncea) showed maximum suppressing poten-tial as minimum per cent reduction in crop yield of unweeded over weeded (7.4%) and minimum per cent increase in weed dry matter of unweeded over weeded( 44%) was observed in this crop. Gobhi sarson (Brassica napus) was the next best smothering crop followed by barley (2-row), barley (6-row), linseed, durum wheat and bread wheat, respectively in suppressing the M. neglecta. Two hand weedings treatment proved better in controlling the weeds as compared to unweeded treatment.
Hand weedings, Malva neglecta, Rabi crops, Smothering effect, Weed control
Al-Khatib, K. , Libbye, C. and Boydston, R. (1997). Weed suppression with Brassica green manure crops in green pea. Weed Sci 45(3): 439â€“445.
Al-Khatib, K. and Boydston, R. (1999). Weed control with Brassica green manure crops. In S. S. Narwal, ed. Allelopathy Update. Volume 2. New Delhi, Calcutta: Oxford Publishing. pp. 255â€“270.
Subbiah, B.V. and Asija, G.L. (1956). A rapid procedure for the estimation of available Nitrogen in soils. Curr Sci 25 : 259-260.
Maurice, D.C. and Cole, D.E. (1986). Control of round leaved mallow in barley. Res Rep Expert Comm Weeds (West. Sect.) : 561-562 pp.
Buhler, D.D., Kohler, K.A. and Foster, M.S. (1999). Spring seeded smother plants for weed control in corn and soybeans. Leopold Center Grant Reports. Paper 123
Donaghy, D.I. and Sturko, A.R.W. (1983a). Control of round leaved mallow in wheat. Res Rep Expert Comm Weeds (West. Sect.) 642pp.
Donaghy, D.I. and Sturko, A.R.W. (1983b). Control of round leaved mallow in wheat. Res Rep Expert Comm Weeds (West. Sect.) 642-643pp.
Dexter, G., Nalewaja, J.D., Rasmusson, D.D. and Buchli, J. (1981). Survey of wild oats and other weeds in North Dakota 1978 and 1979, ND. Res Report 79: 80. (Cited from R.M.D Makowski and I.N. Morrison (1989). The biology of Canadian weeds. 91. Malva pusilla Sm. (= M. rotundifolia L.) Can J Plant Sci 69 (3) : 861-879.
Solie, J.B., Soloman, S.G., Self, K.P., Peeper, T.F. and Kos-celny, J.A. (1991). Reduced row spacing for improved wheat yields in weed free and weed infested fields. Trans ASAE 34: 1654-1660.
Steffey, J. (1980). The mallow family : Malvaceae. Amer Hortic 59: 7-8.
Khaliq, Matloob, A. and Chauhan, B.S. (2014b). Weed man-agement in dry-seeded fine rice under varying row spac-ing in the rice-wheat system of Punjab. Pak. PlantProd. Sci. 17: 321- 332.
Khaliq, Hussain, S., Matloob, A., Tanveer, A. and Aslam, F. (2014a). Swine cress (Cronopus didymus L. Sm.) resi-dues inhibit rice emergence and early seedling growth. Philipp. Agric. Sci. 96(4) : 419-425.
Khaliq., Hussain, S., Matloob, A., Wahid, A. and Aslam, F. (2013a). Aqeous swine cress (Coronopus didymus) extracts inhibit wheat germination and early seedling growth. Int. J. Agric. Biol, 15(4) : 743-748.
Estorninos, J.L., Gealy, D.R., Gbur, E.E., Talbert, R.E. and Mc-Clleland, M.R. (2005). Rice and red rice interfer-ence. II. Rice response to population densities of three red rice (Oryza sativa) ecotypes. Weed Sci. 53(5): 683-689.
Grodzinsky, M. (1992) Allelopathic effects of cruciferous plants in crop rotation. In Allelopathy: Basic and Ap-plied Aspects, eds S.J.H Rizvi and V.Rizvi. New York: Chapman and Hall, pp: 77-85.
M. Khan and N. Haq (2002). Wheat crop yield loss assess-ment due to weeds. Sarhad J Agri.18(5): 449 - 453.
Sarmah, M.K., Narwal, S.S. and Yadava, J.S. (1992). Smoth-ering effect of Brassica species on weeds. In Proc. of first national symposium â€œAllolopathy in agroecosys-tems: Agriculture and Forestryâ€ held at Haryana Agri-cultural University,Hisar,India. Feb12-14, pp: 51-55
Jackson, M.L. (1967). Soil Chemical Analysis.Prentice Hall of India Pvt. Ltd., New Delhi.
Grimmer, O.P. and Masiunas, J.B. (2004). Evaluation of winter-killed cover crops preceding snap pea. Hort. Technol.14: 349-355
Boydston, R.A. and Hang, A. (1995). Rapeseed (Brassica napus ) green manure suppresses weeds in potato (Solanum tuberosum). Weed Technol. 9 (4) : 669-675.
Dehaan, R.L., Wyse, D.L., Ehlke, N.J., Maxwell, B.D. and Putnam, D.H. (1994). Simulation of spring seeded smother plants for weed control in corn(Zea mays). Weed Sci. 42: 35-43.
Zimdahl, R.L. (2007). Fundamentals of Weed Science, third ed. Elsevier Inc, U.S.A. 151- 156pp.
Makowski, R.M.D. and Mortensen, K. (1989). Colleto-trichum gloeosporioides f. sp. malvae as a Bio-herbicide for round leaved mallow (Malva pusilla) : Conditions for successful control in the field. Proc VII Int Symp Biol Cont Weeds.
Hussain, S., Khaliq, A., Matloob, A., Fahad, S. and Tanveer, A. (2015). Interference and economic threshold level of little seed canary grass in wheat under different sowing times. Environ. Sci.Poll. Res, 22(1) : 441-449.
Singh, S.K. and Saha, G.P. (2001). Productivity and profit-ability of wheat (Triticum aestivum) as influenced by cultural and chemical weed control. Indian J Agron 46: 475-479
Olsen, S.R., Cole, C.V., Watanabe, F.S. and Dean, L.A. (1954). Estimation of available phosphorus by ex-traction with sodium bicarbonate.USDA Circ 939: 19pp Washington DC.
Singh, S. (2001). Interception of weeds in imported wheat grain consignments. Ann Agric Res. 22 (1): 83-87.
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