Weed control in dormant alfalfa (Medicago sativa L.) with active ingredients� metribuzin, imazetapyr and pronamide

Pacanoski, Zvonko; Týr, Š.; Vereš, T.

doi:10.5513/jcea01/18.1.1865

Cited by 3 publications

(5 citation statements)

References 14 publications

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“…Ours results support other research evaluating herbicide application and injury response on dormant alfalfa varieties (Malik et al., 1993; Pacanoski et al., 2017; Wilson, 1986, 1989). Pacanoski et al.…”

Section: Discussionsupporting

confidence: 91%

“…Pacanoski et al. (2017) reported complete recovery prior to the first cutting from metribuzin, imazethapyr, or pronamide applied on established dormant alfalfa (i.e., stands older than 1 yr). Similarly, injury from fluazifop‐butyl plus bromoxynil application was observed on an irrigated dormant alfalfa prior to the first cutting, but alfalfa fully recovered by the second cutting (Wilson, 1986).…”

Section: Discussionmentioning

confidence: 99%

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Evaluation of the summer slump application of saflufenacil on nondormant conventional alfalfa

Devkota

Bachie

2021

Crop Forage & Turfgrass Mgmt

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Alfalfa (Medicago sativa L.) is an important crop for the low desert region of southwestern United States. A field study was conducted to evaluate tolerance of established nondormant conventional alfalfa to saflufenacil applied during the summer slump. Treatments consisted of saflufenacil applied alone at 0.7 or 1.4 oz ac −1 , or saflufenacil at 0.7 oz ac −1 tank-mixed with imazamox, bromoxynil, or metribuzin at 0.8, 6.0, or 16.0 oz ac −1 , respectively. Methylated seed oil (as surfactant) and ammonium sulfate (as adjuvant) were tank-mixed at 1 and 2.5% (v/v), respectively, to each herbicide treatment. At 2 d after treatment, alfalfa injury from saflufenacil at the lower rate was lowest (21%); whereas the injury was highest (48%) from saflufenacil plus bromoxynil treatment. The alfalfa injury progressed for 2 wk after treatment (WAT) and was >36% for all treatments except for saflufenacil at the lower rate. Crop recovery was observed about 2 WAT and minimal injury (<3%) occurred at 4 WAT. Alfalfa height was similar across herbicide treatments and the weed-free (non-treated) control. At 4 WAT, average alfalfa height for all treatments was 11 inches or greater. The alfalfa injury observed during the initial weeks did not translate into biomass yield reduction. Accordingly, there was no significant difference in alfalfa biomass yield among the treatments. Overall, alfalfa biomass yield was 0.57 and 0.47 ton ac −1 or greater at 4 WAT (1st cutting) and 8 WAT (2nd cutting), respectively, after herbicide application. Our results illustrate that saflufenacil and its tank-mix with imazamox, bromoxynil, or metribuzin caused injury to nondormant conventional alfalfa during early weeks, but alfalfa recovered by 2 wk after herbicide application without height and biomass yield reduction.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 99%

Evaluation of the summer slump application of saflufenacil on nondormant conventional alfalfa

Devkota

Bachie

2021

Crop Forage & Turfgrass Mgmt

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“…The dynamics of weed density with a natural background of weeds in thirteen agrophytocenoses grown under cover of spring forage pea was tested in field trial in the Institute of Forage Crops, Pleven, Bulgaria (2014-2017. Sainfoin (Onobrychis sativa L.) (local population), birdsfoot trefoil (Lotus corniculatus L.) (cv.…”

Section: Methodsmentioning

confidence: 99%

“…Studies on the species composition, ratio, distribution and relationship between species in weed association of agrophytocenoses are extremely limited, despite the fact that every year huge money is spent for the control against them (Liebman and Davis 2000, Hiltbrunner et al 2007, Dimitrova 2010a, b, Meiss et al 2010Carbonero et al 2011Hijano et al 2013, Pacanoski et al 2017. Sporadic results have been published to clarify changes in weed density dynamics in different crops, but they refer to a particular type of agrophytocenoses under specific agro meteorological conditions, relevant agro technology and intensity of use (Schoofs and Entz 2000, Derksen 2002, Dimitrova 2005, Saatkamp 2011, Hassannejad and Ghafarbi 2014.…”

mentioning

confidence: 99%

Dynamics and distribution of weed species in weed associations

MARINOV-SERAFIMOV¹,

GOLUBINOVA²,

VASILEVA³

2019

Indian J Agri Sci

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Dynamics of weed density with a natural background of weeds in agrophytocenoses of sainfoin (Onobrychis sativa L.), birdsfoot trefoil (Lotus corniculatus L.) and alfalfa (Medicago sativa L.), pure grown (100%) and in mixtures with cocksfoot (Dactylis glomerata L.) (50:50%) and sown under a cover of pea (Pisum sativum L.) were tested in field trial in the Institute of Forage Crops, Pleven, Bulgaria. It was found that the weed infestance and species composition changed depending on the type of Ðµdificator. The species composition in weed associations was the highest in pure grown Lotus corniculatus L. In mixtures of Onobrychis sativa L. + Dactylis glomerata L. the highest weed infestance was recorded, and the lowest in Onobrychis sativa L. under cover of Pisum sativum L. Weed infestance in mixtures was lower as compared to pure grown swards, except Medicago sativa L. + Dactylisglomerata L. For the specific environment of study the highest part for annual dicotyledonous weed species (from 0.0 to 49.5%), followed by perennial dicotyledonous (from 3.7 to 58.2%) was obsereved. There was a strong variation in the percentage in agrophytocenoses of Convolvulus arvensis L. (from 0.0 to 11.4%), Sonchus arvensis L. (from 0.0 to 19.0%) and Erigeron canadensis L. (from 0.0 to 47.8%), whereas Matricaria recutita L. varied within narrow range (0.0 to 3.7%). The dependance allows to be used for developing more effective weed control systems in the studied forage crops and mixtures.

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“…Unseeded and less palatable species such as green bristle grass were common in legume-based grassland in this region. Weeds compete with alfalfa for light, nutrients and water, and they reduce forage quality as well [48]. However, oat and sudangrass are weed-suppressive species that thrive in interspecific competition [49].…”

Section: Species Interactionsmentioning

confidence: 99%

Optimizing Cropping Systems of Cultivated Pastures in the Mountain–Basin Systems in Northwest China

Fan

Dai

et al. 2020

Applied Sciences

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Cultivated pastures are effective supporting systems of natural grassland preservation and sustainable agriculture in arid regions of northwest China. The adaptive combination of forage species enhances the yields and ecological functions of cultivated pastures. Legume–grass intercropping is a valuable sowing regime because of the niche differentiation and resource acquisition. Understanding the effects of species interactions in legume–grass intercropping systems can provide scientific and practical guidance on cultivated pasture management. In this study, we conducted a field experiment to determine the advantages and effects of alfalfa (Medicago sativa L.) annual grass intercropping on cultivated pastures. We analyzed the data on population traits, community characteristics and dry matter in the growing period to evaluate the effects of variety and sowing patterns with the following treatments: three alfalfa varieties (Algonquin, Leafy king, WL354HQ) sown in monocultures and mixed with oat (Avena sativa L.) or sudangrass (Sorghum sudanense (Piper) Stapf.) with two seeding ratios. Our results suggest that in mixtures, the plant traits of alfalfa were determined by their own characters at the earlier stage but were affected more by companion grass at the later stage. The annual forage grass companion impaired the growth of alfalfa during the growth period. In mixtures, sudangrass displayed a stronger inhibiting effect on alfalfa than oat. Alfalfa–grass intercropping was proved to be a feasible cropping practice in terms of yield, production stability and weed control, due to their complementary use of resources in comparison with alfalfa monocropping. Alfalfa–annual grass intercropping is a beneficial alternative strategy to obtain effective cultivated pastures in arid regions.

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Weed control in dormant alfalfa (Medicago sativa L.) with active ingredients� metribuzin, imazetapyr and pronamide

Cited by 3 publications

References 14 publications

Evaluation of the summer slump application of saflufenacil on nondormant conventional alfalfa

Evaluation of the summer slump application of saflufenacil on nondormant conventional alfalfa

Dynamics and distribution of weed species in weed associations

Optimizing Cropping Systems of Cultivated Pastures in the Mountain–Basin Systems in Northwest China

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