Effect of Separate and Combined Applications of Herbicides on Weed Control and Yield of Sugar Beet

Abdollahi, Farzin; Ghadiri, H.

doi:10.1614/wt-03-142r2

Cited by 17 publications

(11 citation statements)

References 13 publications

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“…Individual sugar beet herbicides seldom have a wide enough weed control spectrum or sufficient residual activity to control all weeds (Abdollahi, Ghardiri, 2004). The optimization of herbicide application in the sugar beet protection system can be achieved by using mixtures of appropriate components and their selected doses (Strandberg et al, 2005;Domaradzki, 2009).…”

Section: Introductionmentioning

confidence: 99%

Control of annual broadleaf weeds by combinations of herbicides in sugar beet

Deveikytė

Seibutis

Feiza

et al. 2015

Zemdirbyste-Agriculture

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Sugar beet is a poor competitor to weeds. Weeds are a major constraint to sugar beet productivity. Field experiments were conducted at Institute of Agriculture, Lithuanian Research Centre for Agriculture and Forestry (55º23′ N, 23º51′ E) during the period 2010-2012 on a loamy Endocalcari-Epihypogleyic Cambisol (CMg-p-w-can) to determine the influence of tank-mixed herbicides phenmedipham + desmedipham + ethofumesate (136.5 + 106.5 + 168 g ha -1 a.i.) with chloridazon (624 g ha -1 a.i.), metamitron (700 g ha -1 a.i.) and triflusulfuron (3.75 g ha -1 a.i.) on broad leaf weeds. Phenmedipham + desmedipham + ethofumesate was applied at three doses, 1/1, 2/3 and 1/2 of the recommended dose. Metamitron was applied at two doses, 1/1 and 1/2 of the recommended dose. All herbicide combinations acted similarly in reducing these weed species: Chenopodium album, Thlaspi arvense, Tripleurospermum perforatum, Polygonum aviculare, Viola arvensis, Veronica arvensis, Lamium purpureum, Capsella bursa-pastoris and Euphorbia helioscopia. The efficacy of phenmedipham + desmedipham + ethofumesate at full (1/1) dose was similar to that applied in a tank mix with chloridazon, metamitron and triflusulfuron at full dose. There were no significant differences in weed weight. Having reduced the dose of phenmedipham + desmedipham + ethofumesate by 33% and 50% in a tank mix, the dry weight of C. album, T. perforatum and P. aviculare increased not significantly. The addition of chloridazon, metamitron and triflusulfuron at full dose had a similar impact on weeds. The action of triflusulfuron was longer because the weight of dominant weeds (C. album and T. perforatum) decreased (6-37%) during all crop growing period. Reducing the dose of metamitron from 525 to 350 g ha -1 a.i. (33%) in a tank mix with phenmedipfam + desmedipham + ethofumesate at 1/2 dose, the dry weight of C. album, T. perforatum, P. aviculare, V. arvensis and C. bursa-pastoris increased not significantly. By reducing the dose of herbicides in a tank mix, the number of active ingredients (a.i.) should be increased.

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Section: Introductionmentioning

confidence: 99%

Control of annual broadleaf weeds by combinations of herbicides in sugar beet

Deveikytė

Seibutis

Feiza

et al. 2015

Zemdirbyste-Agriculture

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“…Main reasons include slow early growth of sugar beet, its very low competitive ability at the beginning of vegetation, high sensitivity to herbicides (mainly in early growth stages), and also high cost of special herbicides. Moreover, using herbicides in sugar beet usually induced a decrease of root yield, even in the cases when visual symptoms of injury are not evident (Abdollahi and Ghadiri 2004).…”

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confidence: 99%

Competitive relationships between sugar beet and weeds in dependence on time of weed control

Jursík¹,

Holec²,

Soukup³

et al. 2008

Plant Soil Environ.

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Small plot trials were carried out in years [2001][2002][2003] with sugar beet. In the treatment without weed control, dry weight of sugar beet top and LAI of sugar beet were very low (approx. 50 g/m 2 and 0.5 m 2 /m 2 , respectively). Yield loss of sugar beet was 80-93%. Dominant weeds were Chenopodium album, Fumaria officinalis and Galium aparine. In the treatments where weeds were removed (by hand) until 4 leaf stage of sugar beet, dry weight of sugar beet top and LAI of sugar beet at first increased normally, but were markedly decreased from the half of the vegetation period. Yield loss of sugar beet was 54-28%. Dominant weed in this treatment was Amaranthus retroflexus. The development of sugar beet top dry weight and LAI of sugar beet was practically identical in the treatments where weeds were removed until 8-10 leaf stage of the crop and in those where weeds were removed during the whole vegetation period (500-900 g/m 2 , or 4-7 m 2 /m 2 , respectively). No yield loss of sugar beet was recorded. Dry weight of weeds did not exceed 30 g/m 2 and LAI 0.1 m 2 /m 2 . A. retroflexus and Mercurialis annua were the most frequent weeds in this treatment.

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“…Fennimore and Rachuy (2005) reported that desmedipham/ phenmedipham and ethofumesate applications provided acceptable control of P. oleracea and A. retroflexus. Starke and Renner (1996); Bosak et al, (2001) and Abdollahi and Ghadiri (2004) reported that phenmedipham plus desmedipham showed a much better weeds control in sugar beet than phenmedipham alone. The reason for discrepancies among EDx value of herbicides could be ascribed to the different phenological stages of a plant, climatic conditions and plant species and the period of treatment.…”

Section: Discussionmentioning

confidence: 99%

The Effect of Sugar Beet Broadleaf Herbicides on Fluorescence Induction Curves in Amaranthus retroflexus L. and Portulaca oleracea L.

et al. 2017

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Chlorophyll fluorescence analysis is a simple and rapid method for detecting herbicide effects after a short time following their application in photosynthetic apparatus in plants. Chlorophyll fluorescence measurements were carried out against two broad of weeds to describe how the Kautsky curve and its parameters were affected by herbicides. Desmedipham + phenmedipham + ethofumesate changed the chlorophyll fluorescence induction curve at all time intervals except four hours after spring (HAS) in Amaranthus retroflexus L. and at all doses of Portulaca oleracea L. 4 HAS. In contrast, chlorophyll fluorescence inhibition was evident by chloridazon at doses of 650 and 325 g a.i. ha -1 in P. oleracea and A. retroflexus respectively, for all time intervals. Furthermore, chlorophyll fluorescence decays only occurred by clopyralid in A. retroflexus at the highest dose. A biomass effective dose (ED 50 and/or ED 90 ) based on log-logistic dose-response curves for A. retroflexus were considerably higher than that of P. oleracea. The maximum quantum efficiency (F V /F m ) was stable, whereas the relative changes at the J step (F vj ) and area (the area between the Kautsky curve and the maximum fluorescence (F m )) was more sensitive to all three herbicides. There was a relatively good correlation between fluorescence parameters taken 24 hours after the spraying and the dry matter taken three weeks later, for both species under study.

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Effect of Separate and Combined Applications of Herbicides on Weed Control and Yield of Sugar Beet

Cited by 17 publications

References 13 publications

Control of annual broadleaf weeds by combinations of herbicides in sugar beet

Control of annual broadleaf weeds by combinations of herbicides in sugar beet

Competitive relationships between sugar beet and weeds in dependence on time of weed control

The Effect of Sugar Beet Broadleaf Herbicides on Fluorescence Induction Curves in Amaranthus retroflexus L. and Portulaca oleracea L.

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