Management of herbicide-resistant Phalaris minor in wheat by sequential or tank-mix applications of pre- and post-emergence herbicides in north-western Indo-Gangetic Plains

Yadav, Dharam Bir; Yadav, Ashok; Punia, S. S.; Chauhan, Bhagirath Singh

doi:10.1016/j.cropro.2016.07.012

Cited by 37 publications

(30 citation statements)

References 8 publications

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“…The imaging techniques described here can be used to predict seed germination, giving the farmer an indication of the following year’s field population and an evaluation of weed infestation in the field. Chemical weed control can be applied both pre- and post-weed emergence (Yadav et al, 2016); certain compounds, such as pendimethalin (tubulin interaction inhibition), can serve for both purposes (Riches et al, 1997; Yaduraju et al, 2000). The low benefit that is derived from pre-emergence herbicidal treatment is related largely to the uncertainty about the subsequent year’s weed infestation rates.…”

Section: Discussionmentioning

confidence: 99%

Hyperspectral Technologies for Assessing Seed Germination and Trifloxysulfuron-methyl Response in Amaranthus palmeri (Palmer Amaranth)

et al. 2017

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Weed infestations in agricultural systems constitute a serious challenge to agricultural sustainability and food security worldwide. Amaranthus palmeri S. Watson (Palmer amaranth) is one of the most noxious weeds causing significant yield reductions in various crops. The ability to estimate seed viability and herbicide susceptibility is a key factor in the development of a long-term management strategy, particularly since the misuse of herbicides is driving the evolution of herbicide response in various weed species. The limitations of most herbicide response studies are that they are conducted retrospectively and that they use in vitro destructive methods. Development of a non-destructive method for the prediction of herbicide response could vastly improve the efficacy of herbicide applications and potentially delay the evolution of herbicide resistance. Here, we propose a toolbox based on hyperspectral technologies and data analyses aimed to predict A. palmeri seed germination and response to the herbicide trifloxysulfuron-methyl. Complementary measurement of leaf physiological parameters, namely, photosynthetic rate, stomatal conductence and photosystem II efficiency, was performed to support the spectral analysis. Plant response to the herbicide was compared to image analysis estimates using mean gray value and area fraction variables. Hyperspectral reflectance profiles were used to determine seed germination and to classify herbicide response through examination of plant leaves. Using hyperspectral data, we have successfully distinguished between germinating and non-germinating seeds, hyperspectral classification of seeds showed accuracy of 81.9 and 76.4%, respectively. Sensitive and resistant plants were identified with high degrees of accuracy (88.5 and 90.9%, respectively) from leaf hyperspectral reflectance profiles acquired prior to herbicide application. A correlation between leaf physiological parameters and herbicide response (sensitivity/resistance) was also demonstrated. We demonstrated that hyperspectral reflectance analyses can provide reliable information about seed germination and levels of susceptibility in A. palmeri. The use of reflectance-based analyses can help to better understand the invasiveness of A. palmeri, and thus facilitate the development of targeted control methods. It also has enormous potential for impacting environmental management in that it can be used to prevent ineffective herbicide applications. It also has potential for use in mapping tempo-spatial population dynamics in agro-ecological landscapes.

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Section: Discussionmentioning

confidence: 99%

Hyperspectral Technologies for Assessing Seed Germination and Trifloxysulfuron-methyl Response in Amaranthus palmeri (Palmer Amaranth)

et al. 2017

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“…The lowest wheat yield was obtained in untreated/ weedy plot whereas herbicide T4 Pendimethalin+Metribuzin fb** Clodinafop+Metsulfuron-methyl (RM)* was the only treatment which resulted in high grain yield that was not significantly Clodinafop+Metsulfuron-methyl (RM)* were found effective to control this weed and their biomass was gradually decreased after application of herbicides. The sequential application of pendimethalin with post-emergence herbicides can improve weed control when post-emergence herbicides have a slightly poor efficacy [29]. It was found maximum in (T4 Pendimethalin+Metribuzin fb** Clodinafop+Metsulfuron-methyl (RM)* treatment; 1.300 kg/m 2 and 1.483 kg/m 2 in first and second year trial respectively.During present investigation it was found that chlorophyll 'a', chlorophyll 'b' and total chlorophyll content were reduced after application of herbicides with a maximum fluctuation in chlorophyll b.…”

Section: Discussionmentioning

confidence: 99%

Management of Isoproturon-Resistant Phalaris minor in Wheat by Alternate Herbicides under Tarai Region Conditions

Prinsa¹,

Cj²,

Babita³

et al. 2019

J Agri Sci Food Res

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Phalaris minor Retz. is a major weed of wheat crop across many continents. It is highly competitive in nature and mimics the wheat morphology. Consideration is given to the eradication of isoproturon resistance Phalaris minor and management approaches designated to minimize the impact of resistance. For management of isoproturon-resistant Phalaris minor in wheat crop in the tarai region by alternate herbicides, a field experiment was carried out during the winter season of 2016-17 and 2017-18. The broadcasting of isoproturon resistant Phalaris minor seeds was done before sowing of wheat in field. Treatments included (T1) Pendimethalin @ 750 g a.i./ha, (T2) Pendimethalin+Metribuzin @ 750+210 g a.i./ha, (T3) Pendimethalin+Metribuzin fb mesosulfuron+Idosulfuron (RM) @ 750+210 fb 12+2.4 g a.i./ha, (T4) Pendimethalin+Metribuzin fb 'Clodinafop+Metsulfuron-methyl'(RM) @ 750+210 fb 60+4 g a.i./ha, (T5) Pendimethalin fb Clodinafop propargyl @ 750 fb 60 g a.i./ha, (T6) Pendimethalin fb 'Clodinafop+Metsulfuronmethyl'(RM) @ 750 fb 60+4 g a.i./ha, (T7) Pendimethalin fb Mesosulfuron+Idosulfuron (RM) @ 750 fb 12+2.4 g a.i./ha, (T8) 'Clodinafop+Metsulfuron-methyl'(RM) @ 60+4 g a.i./ha, (T9) Mesosulfuron+Idosulfuron (RM) @ 12+2.4 g a.i./ha, (T10) Weedy. There was no phytotoxicity of any of the herbicide treatments on crop during both the years. The tank-mix or sequential application of herbicides would be a better option than their applications alone to manage the serious problem of herbicide-resistant P. minor in wheat.

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“…Herbicide combinations (ready/pre-mix or tank-mix) have been reported to provide better control of weeds compared to single herbicide (Singh 2015, Singh et al 2015, Yadav et al 2016, Punia et al 2017 besides delaying herbicide resistance. Similarly, it was hypothesized that pre-mix combination of pinoxaden + clodinafop would provide amicable solution against herbicide resistant P. minor.…”

Section: Introductionmentioning

confidence: 99%

Ready mix of pinoxaden and clodinafop-propargyl for control of Phalaris minor in wheat and its residual effects on succeeding rice crop

Yadav¹,

Yadav²,

Punia³

2018

Ind. Jour. Weed Scie.

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Management of herbicide-resistant Phalaris minor in wheat by sequential or tank-mix applications of pre- and post-emergence herbicides in north-western Indo-Gangetic Plains

Cited by 37 publications

References 8 publications

Hyperspectral Technologies for Assessing Seed Germination and Trifloxysulfuron-methyl Response in Amaranthus palmeri (Palmer Amaranth)

Hyperspectral Technologies for Assessing Seed Germination and Trifloxysulfuron-methyl Response in Amaranthus palmeri (Palmer Amaranth)

Management of Isoproturon-Resistant Phalaris minor in Wheat by Alternate Herbicides under Tarai Region Conditions

Ready mix of pinoxaden and clodinafop-propargyl for control of Phalaris minor in wheat and its residual effects on succeeding rice crop

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