African star grass response to postemergence herbicides

Brighenti, A. M.; Benites, Flávio Rodrigo Gandolfi; Sobrinho, Fausto Souza

doi:10.1590/1413-7054201943026918

Cited by 5 publications

(4 citation statements)

References 9 publications

(6 reference statements)

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“…The apparent recovery of the plant height was observed at 49 DASA for the herbicide dose of 35 + 35 g a.i. ha -1 of imazapic applied on the Tifton 419 grass (Table 4), which can be explained by the fact that nonstructural carbohydrates such as glucose, fructose, sucrose, and amides can be stored and used as reserve energy for stress tolerance and regeneration after the first symptoms of injury (Brighenti et al, 2019).…”

Section: Resultsmentioning

confidence: 99%

Development of lawns in response to applications of imazapic alone or combined with imazapyr

Marques

Marchi

Martins

2021

Rev. bras. eng. agríc. ambient.

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Successive mowings are the major maintenance cost of lawns. These costs have led to the search for alternatives to mechanical management. This study aimed to determine the effects of imazapic herbicide doses applied alone or combined with imazapyr as a growth regulator of Tifton 419 and Zoysia grasses. The experimental design was randomized blocks with four replicates, and the treatments consisted of four doses of herbicide imazapic applied alone (35; 70; 105 and 140 g a.i. ha-1) and three doses of imazapic + imazapyr mixture (7.875 + 2.625; 15.57 + 5.25 and 23.625 + 7.875 g a.i. ha-1) in two sequential applications on both grass lawns. Visible injury symptoms, canopy height, height and number of inflorescences, and total dry matter of clippings were determined. Applications of imazapic alone or combined with imazapyr effectively reduced all morphological variables of Tifton 419 grass. Imazapic applied alone or mixed with imazapyr provided adequate control of growth and quantity of dry matter of Zoysia grass clippings. Still, with some application doses of this herbicide, the number of inflorescences present in the lawns increased.

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Section: Resultsmentioning

confidence: 99%

Development of lawns in response to applications of imazapic alone or combined with imazapyr

Marques

Marchi

Martins

2021

Rev. bras. eng. agríc. ambient.

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“…The apparent recovery of the plants height observed at 119 DAA for the herbicide rates of 35 g ha -1 of imazapic and 15.6+5.2 g ha -1 of imazapic + imazapyr mixture in Bahiagrass (Table 4) and 105 g ha -1 of imazapic alone in Bahiagrass (Table 7) can be explained by the fact that nonstructural carbohydrates such as glucose, fructose, sucrose and amides may be stored and used as reserve energy for tolerance to stress and regeneration after the first symptoms of injury (Brighenti et al 2019).…”

Section: Discussionmentioning

confidence: 99%

Use of the imazapic herbicide applied alone or tank mix with imazapyr as growth regulator of lawns

2021

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Successive mowing are the major maintenance costs of lawns. Thus, both the expenditure with mowing and the visual and physiological aspect of the lawn have led to the search for alternatives to mechanical management. Thus, this work aimed to study the effects of different rates of imazapic herbicide applied alone or combined with imazapyr as a growth regulator of Bahiagrass (Paspalum notatum) and St. Augustine grass (Stenotaphrum secundatum). The experimental design was a randomized block with four replicates, and the treatments consisted of six rates of imazapic herbicide (35; 70; 105; 140; 175 and 210 g a.i. ha-1) for both species, three rates of imazapic + imazapyr in tank mix (15.57 + 5.25; 23.625 + 7.875; 32.5 + 10.5 g a.i. ha-1) for Bahiagrass and four rates of imazapic + imazapyr mixture (7.875 + 2.625; 15.57 + 5.25; 23.625 + 7.875; 32.5 + 10.5 g a.i. ha-1) for St. Augustine grass. The effect of the treatments was evaluated by observing visible injury symptoms, canopy height, height and number of inflorescences and total dry matter of clippings. Applications of imazapic alone or combined with imazapyr were effective in reducing plant height, number and height of inflorescences and total amount of dry matter of clippings produced by Bahiagrass plants. Imazapic provided satisfactory control of St. Augustine growth, but its utilization caused an increase in the number of inflorescences present in the lawns.

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“…ha -1 ), and atrazine + tembotrione (1,000.0 + 100.8 g i.a. ha -1 + 0.3% v/v mineral oil) applied to postemergence African Bermuda grass (Cynodon nlemfuensis Vanderyst) in the state of Minas Gerais, Brighenti, Benites and Souza Sobrinho (2019) found that the most phytotoxic treatments for the species were fluroxypyr + amininopyralid, fluroxypyr + triclopyr, and atrazine + tembotrione, with a reduction of approximately 35, 23, and 55%, respectively, for the variable dry matter of plants. The researchers also commented that the dry matter yield of African Bermuda-grass plants was not affected by the application of 2,4-D, 2,4-D + picloram, bentazon, imazapyr, MSMA, and atrazine + S-metolachlor, and these herbicides could be considered potential treatments in the management of African Bermuda-grass pastures.…”

Section: Selectivitymentioning

confidence: 99%

Pasture weed biology and management in Brazil

Martins¹,

Marchi

Marques³

2022

Semina: Ciênc. Agrár.

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The livestock production model historically practiced in Brazil has a strong extractive bias, wherein the premise is to produce livestock with absolutely no concern for the preservation or renewal of environmental resources. The absence of technical criteria for the use of pastures has generated low productivity rates, making the activity unsustainable from both economic and environmental points of view. This scenario led the several sectors linked to the production chain to develop a package of strategies to solve the problems faced by livestock farmers. This package of strategies is conventionally called postmodern or corporate farming, in which the extractive process gives way to the business logic of avoiding waste and recovering profit margins mainly through pasture perpetuation. However, there is still a technical gap in corporate cattle farming related to problems caused by pasture weeds because all the concepts applied are derived or copied from concepts generated in agriculture. Furthermore, few researchers have studied or scientific articles written on elucidating the real problem of weeds in livestock production. Thus, the goal of the present review was to present some aspects related to weed ecology, their interference, and management alternatives in pasture areas, thereby collaborating with corporate livestock farming in Brazil because solutions to weed problems are crucial to increase commitment in all sectors of the production chain.

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African star grass response to postemergence herbicides

Cited by 5 publications

References 9 publications

Development of lawns in response to applications of imazapic alone or combined with imazapyr

Development of lawns in response to applications of imazapic alone or combined with imazapyr

Use of the imazapic herbicide applied alone or tank mix with imazapyr as growth regulator of lawns

Pasture weed biology and management in Brazil

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