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1 March 2013 Fenclorim effects on rice germination and yield
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Chen, Y., Shen, X. and Fang, Y. 2013. Fenclorim effects on rice germination and yield. Can. J. Plant Sci. 93: 237-241. Weedy rice (Oryza sativa f. spontanea) is a serious problem in rice-producing areas. The objective of this study was to evaluate the effect of the safener fenclorim on rice seed germination and yield when used in conjunction with the pre-emergent herbicide pretilachlor in the growth chamber and in the field. Rice seed germination was accelerated by soaking seeds in fenclorim (0.67 g L-1), and pretilachlor (0, 450, 900, 1800, 3600 and 7200 g a.i. ha-1) was applied 1, 3, 6, 12, 24, and 48 h after sowing in a growth chamber. Seeds were also soaked in fenclorim, and then pretilachlor was sprayed (0, 450 and 900 g a.i. ha-1) 1 h after sowing in the field. The percentage of seedling germination for cultured rice was significantly increased by soaking in fenclorim prior to application of the pre-emergence herbicide pretilachlor compared with the control in the growth chamber. The application of the safener fenclorim increased rice yield by 56% and 50% in treatments with 450 and 900 g a.i. hm-2 pre-emergence pretilachlor, respectively, and the weed population, height, and dry matter production were significantly reduced by pretilachlor application.

Yong Chen, Xuefeng Shen, and Yue Fang "Fenclorim effects on rice germination and yield," Canadian Journal of Plant Science 93(2), 237-241, (1 March 2013).
Received: 25 September 2012; Accepted: 1 November 2012; Published: 1 March 2013

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