Evaluation of a pre-formulated post-emergence herbicide mixture of topramezone and dicamba on annual weeds and Bermuda grass in maize in a sub-tropical agro-ecology

Chipomho, Justin; Mupeti, Solomon; Chipomho, Caroline; Mashavakure, Nilton; Mashingaidze, A. B.

doi:10.1016/j.heliyon.2019.e01712

Cited by 4 publications

(3 citation statements)

References 17 publications

(18 reference statements)

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“…Certain traits were identified for dominant annual weeds after herbicide applications, and distinguished between monocotyledonous and dicotyledonous, prostrate, and erect-growing, nitrogen-fixing and non-nitrogen-fixing with specialised carbon storage organs with a C 3 and C 4 photosynthetic pathway, non-spinescent and following an assisted or unassisted seed dispersal. These traits are associated with related to dominant weeds: Argemone mexicana L., Amaranthus viridis L., Bromus diandrus Roth, Bulbostylis humilis (Kunth) C.B.Clarke, Chenopodium carinatum R.Br., Erigeron bonariensis L., Gisekia pharnacioides L., Hibiscus nigricaulis Baker f., Hibiscus trionum L., Ipomoea purpurea (L.) Roth, Indigofera spicata ForsskForsk., Medicago polymorpha L., Oncosiphon pilulifer (L.f.) Källersjö, Sonchus asper (L.) Hill, Solanum humile Lam., Solanum retroflexum Dunal, Urtica urens L., Xanthium spinosum L. (Table 1) [2,67,68]. Since these weed species have traits that are pre-adapted to herbicide disturbance and can persist after herbicide application, it is therefore necessary that they are further investigated for their potential herbicide tolerance under different agricultural practices and landscape management approaches.…”

Section: Herbicide-resistant Weedsmentioning

confidence: 99%

Identifying Plant Functional Traits of Weeds in Fields Planted with Glyphosate-Tolerant Maize for Preferable Weed Management Practices

Kwinda,

Siebert,

Van Coller

et al. 2024

Agriculture

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Weed responses in disturbance-prone agroecosystems are linked to specific plant traits that enable their persistence. Understanding how weeds adapt to thrive in these systems in response to herbicide application is important for farmers to improve weed management for enhanced crop productivity. In this study, we investigated the functional traits and types of weed species able to persist within fields of glyphosate-tolerant maize in the Oliver Tambo District of the Eastern Cape Province, South Africa. This was accomplished by exploring the abundance patterns, composition, and richness of specific weed traits and functional types. Frequency measures (%) were used to identify indicator species. A data set comprising 42 indicator weed species and 11 predefined disturbance traits from 28 fields of glyphosate-tolerant maize was considered for functional analysis. Clusters were identified according to the grouping of weed species based on their trait scores, which revealed ten plant functional types (PFTs). Disturbances associated with post-emergence (after ploughing, sowing, and herbicide application) act as filters that select for weed species with traits such as life span, life form, growth form, photosynthetic pathway, carbon storage, and nitrogen-fixing ability to colonise fields. Trait richness did not differ significantly across maize fields. Our results highlighted the functional types and traits that are favourable to weed resistance and survival, and these need to be considered when developing different herbicide application protocols. By understanding which traits are favourable for weed survival post-emergence, farmers can apply targeted weed management to safeguard maize productivity. In addition, successful control of weeds will contribute to landscape-targeted herbicide applications that are less harmful to the environment.

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Section: Herbicide-resistant Weedsmentioning

confidence: 99%

Identifying Plant Functional Traits of Weeds in Fields Planted with Glyphosate-Tolerant Maize for Preferable Weed Management Practices

Kwinda,

Siebert,

Van Coller

et al. 2024

Agriculture

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“…Hasil tersebut sesuai dengan penelian yang dilakukan oleh Chipomho et al (2019) yang menunjukkan bahwa pencampuran herbisida dapat meningkatkan spektrum pengendalian gulma serta dapat meningkatkan level kematian gulma (ketika pencampuran bersifat sinergis) jika dibandingkan ketika menggunakan herbisida tunggal. Zami et al (2021) melaporkan bahwa tanpa pencampuran, herbisida Ametrin efektif dalam pengendalian gulma.…”

Section: Perlakuanunclassified

Uji Efektivitas Campuran Herbisida Berbahan Aktif Atrazin dan Topramezon terhadap Beberapa Jenis Gulma

Sembodo

Wati

2021

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The purpose of this study was to determine the effectiveness of mixing herbicides with the active ingredients atrazine and topramezone in controlling weeds and to determine the nature of the mixture of the two active ingredients. This research was conducted in a plastic house in Natar District, South Lampung Regency from October 2020 - January 2021. The study was arranged in a Completely Randomized Design (CRD). The treatments consisted of three types of herbicides with six dosage levels of the active ingredients, namely the single herbicide Atrazine 300 g/l (0, 37.5, 75, 150, 300, and 600 g ai ha-1), Topramezon 10 g/l (0. 1.25 , 2.5, 5, 10, and 20 g ai ha-1), and the herbicide mixture of Atrazine 300 g/l + Topramezone 10 g/l (0. 38.75, 77.50, 155, 310, and 620 g ai ha-1) , and repeated 6 times. The target weeds included broadleaf weeds (Ageratum conyzoides and Synedrella nodiflora), grass groups (Digitaria ciliaris, Echinochloa colonum, and Eleusine indica), and the puzzle group (Cyperus iria). The herbicides atrazine and topramezone have different ways of working so that the analytical method used is the Multiplicative Survival Model (MSM) method. The results showed that mixing the herbicide Atrazine 300 g/l + Topramezon 10 g/l had an expected LD50 value of 46.28 g ai ha-1 and a treatment LD50 of 27.22 g ai ha-1 with a co-toxicity value of 1.7 (Co-toxicity > 1) so that it is synergistic.Key words: Atrazin, Topramezon, mixing herbicide, Multiplicative Survival Model, weed, LD50

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“…Maize is a source of fiber, animal feed, and fuel that demands a notable quantity of water, sunlight, and other agronomic resources to achieve the maximum potential yield and total dry matter [6,7]. Although maize yield can be affected by a number of factors, including moisture stress, low soil fertility [8], pests, cultivated hybrids, and environmental conditions, weeds are one of the most important factors limiting yield in maize production [9]. These effects can be quite variable, but the most common is competition for nutrients, water, and light, leading to a drastic reduction in yield [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Rationalizing Herbicide Use in Maize within the Framework of Climatic Change and Extreme Hydrometeorological Phenomena

Begović,

Dudić,

Meseldžija

et al. 2023

Sustainability

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The aim of this study was to investigate specific management methods for controlling weeds under different climate conditions by reducing the risk of herbicide resistance in maize. Herbicide trials were placed at two locations during 2017 and 2018 and organized in a randomized block design with four replicates of all herbicide combinations (terbuthylazine—pre-emergence and mesotrione post-emergence treatment, terbuthylazine + mesotrione in post-emergence treatment, and terbuthylazine—pre-emergence and dicamba in post-emergence treatment). In the trials, 13 specific weeds were observed. High effectiveness was achieved when using commercial preparations with two active ingredients (terbuthylazine and mesotrione) in both years of research. As the year 2018 featured a higher amount of precipitation, uneven weed sprouting occurred, which resulted in a large number of Setaria glauca (18.50 No m−2), Solanum nigrum (16.50 No m−2), Datura stramonium (13.75 No m−2), and Chenopodium hybridum (10.50 No m−2) plants. Herbicide phytotoxicity was not expressed in maize. Ambrosia artemisiifolia, Solanum nigrum, and Datura stramonium had the highest competitive index (CI 10). The highest maize yield was observed under the application of terbuthylazine + mesotrione in post-emergence (14.223 t/ha). This combination led to the highest weed control costs (35.60 EUR/ha) in 2018, while in 2017, the yield was 12.829 t/ha, with a control cost of 33.99 EUR/ha.

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Evaluation of a pre-formulated post-emergence herbicide mixture of topramezone and dicamba on annual weeds and Bermuda grass in maize in a sub-tropical agro-ecology

Cited by 4 publications

References 17 publications

Identifying Plant Functional Traits of Weeds in Fields Planted with Glyphosate-Tolerant Maize for Preferable Weed Management Practices

Identifying Plant Functional Traits of Weeds in Fields Planted with Glyphosate-Tolerant Maize for Preferable Weed Management Practices

Uji Efektivitas Campuran Herbisida Berbahan Aktif Atrazin dan Topramezon terhadap Beberapa Jenis Gulma

Rationalizing Herbicide Use in Maize within the Framework of Climatic Change and Extreme Hydrometeorological Phenomena

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