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Management of Volunteer Corn Seedlings in Dry-Seeded Rice

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DOI: 10.4236/ajps.2013.412294    3,038 Downloads   4,145 Views  

ABSTRACT

The demand for corn is increasing in Asia for feed and biofuel. It is grown in the rice-corn cropping system. During harvest of corn, however, seeds drop on the soil surface and become problems as volunteer corn seedlings in the subsequent dry-seeded rice crop, in which the suppressive effect of standing water is absent. A study was conducted in screenhouse and field conditions to evaluate the effect of rice herbicides on the management of volunteer corn seedlings. In the screenhouse experiment, bispyribac-sodium at 0.030 and 0.045 kg·ai·ha-1 provided complete control of corn seedlings. Fenoxaprop + ethoxysulfuron and penoxsulam + cyhalofop did not provide effective control of corn seedlings. In the field, the sole application of bispyribac and sequential application of oxadiazon and bispyribac suppressed corn biomass by 60%-82% and 89%-91%, respectively, as compared with the nontreated control. The results of this study demonstrate that, in the absence of other management strategies, volunteer corn seedlings in dry-seeded rice systems can be managed by using bispyribac-sodium.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

B. Chauhan and J. Opeña, "Management of Volunteer Corn Seedlings in Dry-Seeded Rice," American Journal of Plant Sciences, Vol. 4 No. 12, 2013, pp. 2381-2385. doi: 10.4236/ajps.2013.412294.

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