Aggarwal, P.K., Ladha, J.K., Singh, R.K., Devakumar, C. and Hardy, B. 2007. Science, technology, and trade for peace and prosperity. Proc. 26th International Rice Research Conference, 9- 12 October 2006, New Delhi, India.
Al Mamun, M.A. 2014. Modelling rice- weed competition in direct- seeded rice cultivation. Agric Res. 3(4): 346-352.
Ala, A., AghaAlikhani, M., Amiri Larijani, B. and Soufizadeh, S. 2014. Comparison between direct- seeding and transplanting of rice in Mazandaran province: Weed competition, yield and yield components. Iranian J. Field Crops Res. 12(3): 463-475.
Anwar, M.P., Juraimi, A.S., Samedani, B., Puteh, A. and Man, M. 2012. Critical period of weed control in aerobic rice. The Sci. World J. 1-10.
Awan, T.H., Sta Cruz, P.C. and Chauhan, B.S. 2015. Agronomic indices, yield- contributing traits, and yield of dry- seeded rice under varying herbicides. Field Crops Res. 177: 15- 25.
Baghestani, M.A., Zand, E. and Soufizadeh, S. 2006. Iranian winter wheats (Triticum aestivum L.) interference with weeds: I. Grain yield and competitive index. Pak J. Weed Sci.Res. 12:119-129.
Balasubramanian, V. and Hill, J.E. 2002. Direct seeding of rice in Asia: Emerging issues and strategic research needs for the 21st century. In: Pandey, S., Mortimer, M., Wade, L., Tuong, T.P., Lopez, K., Hardy, B. (Eds), Direct Seeding: Research Strategies and Opportunities. Inter. Rice. Res. Inst., Los Baños, Philippines, pp. 15- 42.
Bhushan, L., Ladha, J.K., Gupta, R.K., Singh, S., Tirol- Padre, A., Saharawa, Y.S., Gathala, M. and Pathak, H. 2007. Saving of water and labor in a rice-wheat system with no tillage and direct seeding technologies. Agron. J. 99: 1288- 1296.
Caton, B.P., Cope, E.A. and Mortimer, M. 2003. Growth traits of diverse rice cultivars under severe competition: Implication for screening for competitiveness. Field Crops Res. 83: 157- 172.
Chauhan, B.S. and Johnson, D.E. 2010. The role of seed ecology in improving weed management strategies in the tropics. Adv Agron. 105: 221- 262.
Chauhan, B.S., Awan, T.H., Abugho, S.B., Evengelista, G. and Yadav, S. 2015. Effect of crop establishment methods and weed control treatments on weed management,and rice yield. Field Crops Res. 172: 72-84.
Ekeleme, E., Kamara, A.Y., Oikeh., Chikoye, D. and Omioigui, S.O. 2007. Effect of weed competition on upland rice production in north- eastern Nigeria. Afr. Crop. Sci. Conf. Proceed. 8:61-65.
Farooq, M., Siddique, K.H.M., Rehman, H., Aziz, T., Lee, D.J. and Wahid, A. 2011. Rice direct seeding: Experiences, challenges and opportunities. Soil Till Res. 111: 87- 98.
Fernando, B.P., Laca, E.A., Mackill, D.J., Fernandez, G.M. and Fischer, A.J. 2006. Relating rice traits to weed competitiveness and yield: a path analysis. Weed Sci. 54:1122-1131.
Fischer, A.J., Ramirez, H.V., Gibson, K.D. and Da Silveira, P.D. 2001. Competitiveness of semi dwarf upland rice cultivars against palisadegrass (Brachiaria brizantha) and signalgrass (B. decumbens) . Agron J. 93: 967- 973.
Gibson, K.D., Fischer, A.J., Foin, T.C. and Hill, J.E. 2003. Crop traits related to weed suppression in water- seeded rice (Oryza sativa). Weed Sci. 51: 87- 93.
Hill, J.E., Bayaer, D.E., Bocchi, S. and Clampett, W.S. 1990. Direct seeded rice in the temperate climates of Australia, Italy, and the United States. Selected papers from the International Rice Research Conference, Seoul, Korea.27-31 August 1990. pp: 91- 102.
ISTA (International Seed Testing Association). 2009. International rules for seed testing. International Seed Testing Association, Basserdorf, Switzerland.
Jennings, P.R. and Jesus Jr, J.D. 1968. Studies on competition in rice. I. Competition in mixtures of varieties. Evolution. 22; 119- 124.
Kawano, K., Gonzalez, H. and Lucena, M. 1974. Intraspecific competition, competition with weeds, and spacing response in rice. Crop Sci. 14: 841- 845.
Kim, J.K., Lee, M.H. and Kim, Y.S. 2000. Labor saving cultivation technologies of rice in Korea direct seeding and machine transplanting- national crop experimental station, Rural developmentAdministration (RDA), Republic of Korea.
Lemerle, D., Verbeek, B. and Orchard, B. 2001. Ranking the ability of wheat varieties to compete with Lolium rigidum. Weed Res. 41(3):197-209.
Mahajan, G., Ramesha, M.S. and Chauhan, B.S. 2014. Response of rice genotypes to weed competition in dry direct- seeded rice in India. Hindawi Publishing Corporation. The Sci. World J. 8 Pp.
Mazid, M.A., Jabber, M.A., Mortimer, M., Wade, L.J., Riches, C.R. and Orr, A.W. 2003. Improving rice- based cropping systems in north- west Bangladesh diversification and weed management. In: The BCPC International Congress. Crop Prod. & Prot., 1029- 1034.
Namuco, O. S., Cairns, J.E. and Johnson, D.E. 2009. Investigating early vigour in upland rice (Oryza sativa L.): Part I. Seedling growth and grain yield in competition with weeds. Field Crops Res. 113: 197- 206.
Naylor, R. 1996. Herbicides in Asian rice: Transitions in weed management. Palo Alto (California): Institute for International Studies, Stanford University and Manila (Philippines): International Rice Research Institute. Pp:270.
Ni, H., Moody, K., Robles, R.P., Paller Jr, E.C. and Lales, J.S. 2000. Oryza sativa plant traits conferring competitive ability against weeds. Weed Sci. 48: 200-204.
Rao, A.N., Johnson, D.E., Sivaprasad, B., Ladha, J.K. and Mortimer, A.M. 2007. Weed management in direct-seeded rice. Adv Agron. 93: 153-255
Saito, K., Azoma, K. and Rodenburg, J. 2010. Plant characteristics associated with weed competitiveness of rice under upland and lowland conditions in West Africa. Field Crops Res. 116: 308- 317.
Shakoor, A., Islam, S. and Naeem, M. 2000. Efficiency of different herbicides for control of weeds in sorghum (Sorghum bicolor L.) under rainfed conditions. Pak J Biol Sci. 3:463- 465.
Sunyob, N.B., Juraimi, A.S.,. Hakim, M.A., Man, A., Selamat, A. and Amirul Alam, M.D. 2015. Competitive ability of some selected rice varieties against weed under aerobic condition. Int J Agric boil. 17:61-70.
Zhao, D.L., Atlin, G.N., Bastiaans, L. and. Spiertz, J.H.J. 2006. Cultivar weed- competitiveness in aerobic rice: Heritability correlated traits, and the potential for indirect selection in weed- free environments. Crop Sci. 46: 372- 380.
Zhao, D.L., Bastiaans, L., Atlin, G.N. and Spiertz, J,H,J. 2007. Interaction of genotype × management on vegetative growth and weed suppressive of aerobic rice. Field Crops Res. 100:327-340.
Zimdahl, R.L. 2004. Weed- Crop Competition: A Review, 2nd ed. Blackwell Publishing.