The Scientific World Journal / 2012 / Article / Tab 1

Research Article

Effect of Growth Stage on the Efficacy of Postemergence Herbicides on Four Weed Species of Direct-Seeded Rice

Table 1

Effect of postemergence herbicides on seedling survival (%) of barnyardgrass, Chinese sprangletop, junglerice, and southern crabgrass when sprayed at their four-, six-, and eight-leaf stage.

Weed control treatmentRateSeedling survival
Four-leafSix-leafEight-leaf
g ha−1%

Barnyardgrass
 Untreated control0100100100
 Bispyribac-sodium301994100
 Fenoxaprop-p-ethyl + ethoxysulfuron45135680
 Penoxsulam + cyhalofop726383100
 LSD0.05172212

Chinese sprangletop
 Untreated control0100100100
 Bispyribac-sodium309199100
 Fenoxaprop-p-ethyl + ethoxysulfuron45011
 Penoxsulam + cyhalofop720261
 LSD0.0513317

Junglerice
 Untreated control0100100100
 Bispyribac-sodium304048
 Fenoxaprop-p-ethyl + ethoxysulfuron4564189
 Penoxsulam + cyhalofop72165389
 LSD0.05112018

Southern crabgrass
 Untreated control0100100100
 Bispyribac-sodium30982100
 Fenoxaprop-p-ethyl + ethoxysulfuron450765
 Penoxsulam + cyhalofop7291100100
 LSD0.05141517

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