Journal of Food, Agriculture and Environment




Vol 15, Issue 3&4,2017
Online ISSN: 1459-0263


Control of red rice and sulfonylurea-resistant weeds in culture of Protox inhibitor    herbicide resistant transgenic rice


Author(s):

Young Beom Yun 1, Se Ji Jang 1, Sang Soo Kim 2, Ha Il Jung 3, Kyu Hwan Hyun 1, Dong Young Shin 1, Yong In Kuk 1*

Recieved Date: 2017-04-22, Accepted Date: 2017-08-20

Abstract:

Control of red rice is difficult because it is the same genus and species as cultivated rice. Thus, this study was conducted to determine growth characteristics on various red rice accessions under field conditions, to confirm resistant levels of transgenic rice lines MX and PX to Protox inhibiting herbicides under greenhouse conditions, and evaluated controlling levels of red rice accessions and sulfonylurea-resistant weeds to Protox inhibiting herbicides under field conditions. Thirty seven red rice accessions displayed variations in growth characteristics and yield components. Among the parameters, spikelets per panicle displayed differences in red rice accessions. Plant height and shoot fresh weight were not reduced in transgenic rice lines MX and PX irrespective of oxyfluorfen, oxadiazon, and oxadiargyl rates compared with untreated control in both direct-seeded and transplanted rice culture. Red rice accessions R2, R180, R116, and R141 were controlled 87-97% by oxadiazon at 480 g ai ha-1,  95-96% by oxadiargyl at 68 g ai ha-1, and 87-93% by oxyfluorfen at 200 g ai ha-1 in direct seeding on flooded paddy surface under field conditions. Sulfonylurea-resistant weeds, Linderia dubia, Rotala indica, and Monochoria varginalis were completely controlled by oxadiazon at 480 g ai ha-1, oxadiargyl at 68 g ai ha-1, and oxyfluorfen at 200 g ai ha-1 (except for M. vaginalis). In addition, in transplanted rice culture (10- and 30-day old seedling), red rice accessions R2, R180, R116, and R141, and sulfonylurea resistant L. dubia were controlled over 94% by oxyfluorfen foliar application at 1,175 and 2,350 g ai ha-1. Thus, oxadiazon, oxadiargyl, and oxyfluorfen may be used for red rice control and sulfonylurea-resistant weeds in culture of transgenic rice lines MX and PX under direct-seed and transplanting conditions.

Keywords:

Herbicide, Protox inhibitor, red rice, resistant weed, transgenic rice


Journal: Journal of Food, Agriculture and Environment
Year: 2017
Volume: 15
Issue: 3&4
Category: Agriculture
Pages: 78-87


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