Field experiment was conducted at Rice Research Institute of Iran, Rasht in 2017 to study the efficacy of some new herbicides in controlling the weeds of rice fields in comparison to current herbicides. Treatments were included: triafamone+ethoxysulfuron (Council), flucetosulfuron (Zechor), pyrazosulfuron-ethyl 10% WG (Saathi), Pyrazosulfuron-ethyl 75% WG (Piroz) (all in recommended and two times the recommended dosage) and recommended dose of current herbicides, butachlor (Machete)+bensulfuron-methyl (Londax) and pretilachlor (Rifit)+bensulfuron) plus weedy and hand-weeded control. Results showed that new herbicides, up to two times the recommended dosage, did not have any phytotoxicity symptoms on rice while recommended dosages of common herbicides led to 5-15% phytotoxicity. The efficacy of new herbicides (flucetosulfuron and triafamone+ethoxysulfuron) in weed controlling was similar to common herbicides, while the efficacy of both pyrazosulfuron formulations was not acceptable. Overall, the results of this study showed that two new herbicides (flucetosulfuron and triafamone+ethoxysulfuron), due to high efficiency in controlling a wide range of weeds has the capacity to be replaced the current herbicides (butachlor and pretilachlor) that are going to be eliminated due to environmental concerns in future.
Aminpanah, H. & Yaghoubi B. (2013). Efficacy of some herbicide for bulrush (Bolboschoenus maritimus (L.) Palla control in paddy fields of Northern Iran. Journal of Plant Protection, 32(2), 245-255.
Ampong-Nyarko K. & De Detta S. K. (1991). A handbook for weed control in rice. IRRI, Manila. Pp. 113.
Acharva, S. S. & Bhattacharva, S. P. (2013). Comparative efficacy of pyrazosulfuron ethyl and bentazon with acetamides for weed control in transplanted boro rice (Oryza sativa L.) in the lower Gangetic Plain Zone of West Bengal, India. International Journal of Bio-Resource and Stress Management, 4(4), 506-509.
Aminpanah, H., Sharifi, P., Mohaddesi, A., Abbasian, A. & Javadi M. (2014). Rice grain yield and weed growth as affected by plant density and pretilachlor rate. Philippine Agricultural Scientist, 97(3), 266–272.
Appleby, A. P. (2005). A history of weed control in the United States and Canada—a sequel. Weed Science, 53, 762–768.
Brown, H. M., Gaddamidi, V. & Lee, P. W. (1998). Sulfonylureas. In Metabolic pathways of agrochemicals, part1: Herbicides and plant growth regulators, T. R. Roberts, The Royal Society of Chemistry Information Services. Pp. 849.
Brown, H. M. (1990). Mode of action, crop selectivity and soil relation of sulfonyl urea herbicides. Pesticide Science, 29, 263–281.
Chopra, N. K. & Chopra, N. (2003). Effect of doses and stages of application of pyrazosulfuron ethyl on weeds in transplanted rice. Indian Journal of Weed Science, 35(1&2), 42–46.
Chu, C., Lin, H. T., Wong, S. S. & Li, G. C. (2002). Distribution and degradation of pyrazosulfuron ethyl in paddy field. Plant Protection, Bulletin, 44, 147–156.
Deivasigamani, S. (2016). Study of bio-efficacy and phytotoxicity of new generation herbicides on triafamone and ethoxysulfuron in direct seeded rice (Oryza sativa). International Journal of Applied Science, 3(2), 106-112.
Farzan, S., Yaghoubi, B., Asghari, J., Mohammadvand, E., & Farahpor, A. (2014). Response of rice and barnyardgrass (Echinochloa crus-galli) to rates and timings of paddy herbicides. Iranian Crop Science, 42(3), 467-478.
Halder, P., Maiti, S., Bhattacharya, S. P., & Banerjee, H. (2005). Comparative efficacy of Pyrazosulfuron Ethyl (PSE) alone and its combination with Molinate against weed complex of boro paddy. Journal of Crop and Weed, 1(1), 49-53.
Jabran, K., Farooq, M., Hussain, M., Ehsanullah, M. B., Shahid, M., & Lee, D. J. (2012). Efficient weeds control with penoxsulam application ensures higher productivity and economic return of direct seeded rice. International Journal of Agricultural and Biology, 14, 901-907.
Kim, D. S., Koo, S. J., Lee, J. N., Hwang, K. H., Kim, T. Y., Kang, K. G., Hwang, K. S., Joe, G. H., Cho, J. H., & Kim D. W. (2003). Flucetosulfuron: a new sulfonylurea herbicide. The BCPC International Congress: Crop Science and Technology, Volumes 1 and 2. Proceedings of an international congress held at the SECC, Glasgow, Scotland, UK, 10-12 November 2003 pp. 87–92.
Kumar, S., Rana, S. S., Navell C. & Ramesh. (2013). Mixed weed flora management by bispyribac-sodium in transplanted rice. Indian Journal of Weed Science, 45(3): 151–155.
Mohammad Sharifi, M. (2001). Practical guide of weed management in paddy fields of Iran. Agriculture Jihad Ministry Publication, Extension Deputy. Pp 114. (In Farsi).
Moorthy, B. T. S. (2002). Evaluation of pyrazosulfuron ethyl alone and in combination with molinate for controlling weeds in rainfed direct-seeded lowland rice. Indian Journal of Weed Science, 34, 285–286.
Naylor, R. (1996). Herbicides in Asian rice transitions in weed management: Stanford University. 270 Pp.
Nosratti, I., Sabeti, P., Chaghamirzaee, G., & Heidari, H. (2017). Weed problems, challenges, and opportunities in Iran. Crop Protection. 29 (11), 1223-1231
Pal, S., Ghosh, R. K., Banerjee, H., Kundu, R., & Alipatra, A. (2012). Effect of pyrazosulfuron-ethyl on yield of transplanted rice. Indian Journal of Weed Science, 44(4), 210-213.
Ramesha, Y. M., Ajayakumar, M. Y., Bhanuvally, M., Murthy K., & Roopashree, D. H. (2015). Bio-efficacy of pyrazosulfuron ethyl 10% WP against weeds in transplanted rice. Acta Scientifica International Journal of Agriculture, 1(1), 6-11.
Rosinger, C., Shirakura, S., Hacker, E., Sato, Y., Heibges, S., & Nakamura, S. (2012). Triafamone (AE 1887196) a new rice herbicide for Asia, 544-548.
Russell, M. H., Saladini, J. L., & Lichtner, F. (2002). Sulfonylurea herbicides. Pesticide Outlook, 166- 173.
Singh, N., and Singh, S. B. (2011) Translocation and degradation of pyrazosulfuron ethyl in rice soil. Pest Management Science, 67, 1451–1456.
Yaghoubi, B., Alizadeh, H., Rahimian, H., Baghestani, M., Sharifi, M., & Davatgar, N. (2010). Key paper. A review on researches conducted on paddy field weeds and herbicides in Iran. 3rd Iranian weed science congress. Babolsar, Mazandaran, Iran. pp 2-11. (In Farsi).
Zhang, W., Webster, E. P., Blouin, D. C., & Linscombe, S. D. (2004). Differential tolerance of rice (Oryza sativa) varieties to clomazone. Weed Technology, 18, 73–76.
Pouramir, F., Yaghoubi, B., & Aminpanah, H. (2020). Efficacy of new herbicides triafamone + ethoxysulfuron, flucetosulfuron and pyrazosulfuron-ethyl on paddy fields weed control. Iranian Journal of Field Crop Science, 50(4), 127-136. doi: 10.22059/ijfcs.2018.257165.654467
MLA
Farzin Pouramir; Bijan Yaghoubi; Hashem Aminpanah. "Efficacy of new herbicides triafamone + ethoxysulfuron, flucetosulfuron and pyrazosulfuron-ethyl on paddy fields weed control", Iranian Journal of Field Crop Science, 50, 4, 2020, 127-136. doi: 10.22059/ijfcs.2018.257165.654467
HARVARD
Pouramir, F., Yaghoubi, B., Aminpanah, H. (2020). 'Efficacy of new herbicides triafamone + ethoxysulfuron, flucetosulfuron and pyrazosulfuron-ethyl on paddy fields weed control', Iranian Journal of Field Crop Science, 50(4), pp. 127-136. doi: 10.22059/ijfcs.2018.257165.654467
VANCOUVER
Pouramir, F., Yaghoubi, B., Aminpanah, H. Efficacy of new herbicides triafamone + ethoxysulfuron, flucetosulfuron and pyrazosulfuron-ethyl on paddy fields weed control. Iranian Journal of Field Crop Science, 2020; 50(4): 127-136. doi: 10.22059/ijfcs.2018.257165.654467