Controle do capim-braquiária associado à nutrição com boro no cultivo do mogno-africano em sistema silvipastoril

Brighenti, A. M.; Müller, Marcelo Dias

doi:10.1590/s1806-66902014000400012

Cited by 5 publications

(7 citation statements)

References 4 publications

(4 reference statements)

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“…ha -1 . Still regarding isoxaflutole, Brighenti & Muller (2014) found greater phytotoxic effects in doses lower than those used in this study in African mahogany (Khaya ivorensis) and Australian cedar (Toona ciliata var. australis) seedlings.…”

Section: Resultscontrasting

confidence: 62%

“…Similar to pre-emergence application of herbicides chlorimuron-ethyl and clomazone, their postemergence application led to mild initial symptoms of toxicity (≤8.5%), which dissipated during the experiment, followed by recovery of the treated plants. Brighenti & Muller (2014) did not see toxicity in African mahogany plants after application of chlorimuron-ethyl (7.5 and 12.5 g a.i. ha -1 ).…”

Section: Resultsmentioning

confidence: 73%

“…When using isoxaflutole at the doses of 75 and 112.5 g a.i. ha -1 , phytotoxic values ranged from 15 to 28% in African mahogany, and from 29 to 34.2% in Australian cedar, respectively (Brighenti & Muller, 2014).…”

Section: Resultsmentioning

confidence: 98%

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Herbicides selectivity on seedlings of White Leadtree (Leucaena leucocephala)

Dias

Gomes²,

Anunciato³

et al. 2020

Científica

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Difficulty in controlling weeds has hindered the success of vegetation recovery projects using white leadtree (Leucaena leucocephala) seedlings in degraded areas. The use of herbicides is indispensable to mitigate damage and make these areas viable. Therefore, this study evaluated the selectivity of pre-and postemergence herbicides on white leadtree seedlings. Two experiments were carried out in a greenhouse in a randomized block design with four replications. Pre-emergence treatments (g ha-1) were: atrazine (3,500.00), chlorimuron-ethyl (20.00), clomazone (900.00), flumioxazin (125.00), indaziflam (100.00), isoxaflutole (262.50), pendimethalin (1,150.00), sulfentrazone (500), and S-metolachlor (1,920.00), in addition to a control (without herbicide). The second experiment consisted of the following postemergence treatments (g ha-1): atrazine (2,500.00), chlorimuron-ethyl (15.00), clomazone (54.00), flumioxazin (20.00), glyphosate (396.25), haloxyfop-methyl (49.88), indaziflam (75.00), isoxaflutole (187.50), pendimethalin (1,150.00), and S-metolachlor (1,440.00), in addition to a control (without herbicide). Phytotoxicity, plant height, and root collar diameter were assessed at 3, 7, 14, 30, and 60 days after application (DAA). Shoot dry matter was assessed at 60 DAA. Herbicides atrazine, indaziflam, and isoxaflutole, applied in pre-and postemergence, in addition to glyphosate, negatively influenced all evaluations, being considered nonselective for white leadtree plants. Herbicides with selectivity, regardless of the application method, were chlorimuron-ethyl, clomazone, flumioxazin, haloxyfop-methyl, pendimethalin, sulfentrazone, and S-metolachlor.

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Section: Resultscontrasting

confidence: 62%

Section: Resultsmentioning

confidence: 73%

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Herbicides selectivity on seedlings of White Leadtree (Leucaena leucocephala)

Dias

Gomes²,

Anunciato³

et al. 2020

Científica

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“…The herbicides chlorimuron-ethyl, fomesafen, nicosulfuron, and bentazon caused visual injuries in plants at all evaluated times, except for chlorimuron-ethyl and fomesafen, which provided symptoms of intoxication that disappeared at the last evaluated period (42 DAA) ( Table 5). Brighenti and Muller (2014) observed no symptoms of intoxication in African mahogany with the application of chlorimuron-ethyl. Oliveira Júnior et al (2011) pointed out that selectivity to herbicidescan be obtained by means of physiological and morphological differences between 6 plant species, which may explain the different results found between Peruvian peppertree and African mahogany.…”

Section: Peruvian Peppertree (Schinus Molle) Jaboticabalmentioning

confidence: 78%

“…Also, there were no symptoms of injury caused by this herbicide in all the evaluated period. Brighenti and Muller (2014) reported that nicosulfuron application in African mahogany and Australian cedar at a dose of 40 g ha -1 presented slight and medium symptoms of intoxication at 14 and 21 DAA, respectively, with a lower dry matter accumulation in Australian cedar plants. In our study, nicosulfuron (50 g ha -1 ) provided visual toxicity from 7 to 42 DAA in Peruvian Means followed by the same letter in the column do not differ from each other by Student t test (p>0.05).…”

Section: Peruvian Peppertree (Schinus Molle) Jaboticabalmentioning

confidence: 99%

Selectivity of Herbicides to Native Tree Species in Brazil

Oliveira¹,

Silva

Gonçalves

et al. 2019

Planta daninha

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Weeds are one of the main obstacles in the recovery of degraded areas. This research aimed to study the selectivity of herbicides on Trema micrantha (Jamaican nettletree), Schinus molle (Peruvian peppertree), and Apuleia leiocarpa (garapeira) seedlings. An experiment was installed in Junqueirópolis and another in Jaboticabal/SP, Brazil. The experimental design used was completely randomized design with four replications. Treatments consisted of clethodim + fenoxaprop-p-ethyl (50 + 50 g a.i. ha-1), sethoxydim (184 g a.i. ha-1), quizalofop-p-ethyl (75 g a.i. ha-1), nicosulfuron (50 g a.i. ha-1), fluazifop-p-butyl (125 g a.i. ha-1), fomesafen (225 g a.i. ha-1), haloxyfop-methyl (48 g a.i. ha-1), bentazon (720 g a.i. ha-1), chlorimuron-ethyl (15 g a.i. ha-1), and control without herbicide. The analyzed characteristics were stem diameter, plant height, and phytointoxication at 7, 14, 21, 28, 35, and 42 days after herbicide application (DAA), in addition to shootdry matter accumulation in seedlings at the end of the study. Nicosulfuron and chlorimuron-ethyl caused intoxication in all the studied tree species. In Jaboticabal, these herbicides impaired the initial growth of Jamaican nettletree seedlings, while no herbicide delayed its initial development in Junqueirópolis.A similar result was obtained regarding dry matter accumulation for garapeira in both cities. The herbicides clethodim + fenoxaprop-p-ethyl and sethoxydim decreased dry matter accumulation in Peruvian peppertree plants in Jaboticabal and Junqueirópolis, respectively, thus not being recommendedtheir use for these species.

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Selectivity of herbicides applied to Brazilian tree species at post-emergence

et al. 2022

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The presence of weeds in silvicultural systems has been considered one of the main obstacles to the success of projects designed to recover degraded areas. The aim of this study was to evaluate the selectivity of herbicides applied at post-emergence in the initial growth of seedlings of capixingui (Croton floribundus), açoita-cavalo (Luehea divaricata), and guaritá (Astronium graveolens), in the municipalities of Jaboticabal and Junqueirópolis, state of São Paulo. The experimental design was completely randomized, with four replications, and the treatments consisted of herbicides (g a.i.•ha -1 ) clethodim + phenoxaprop-p-ethyl (50 + 50), sethoxydim (184), quizalofop-p-ethyl (75), nicosulfuron (50), fluazifop-p-butyl (125), fomesafen (225), haloxyfop-methyl (48), bentazon (720), chlorimuron-ethyl (15), in addition to control without herbicide. The characteristics analyzed were: plant height increase and visual phytointoxication at 7, 14, 21, 28, 35, and 42 days after herbicide application. At the end of the experiment, the shoots of the plants were removed to assess shoot dry matter. The herbicides clethodim + fenoxaprop-p-ethyl, fluazifopp-butyl, and quizalofop-p-ethyl showed selective potential for the species capixingui, açoita-cavalo, and guaritá. The herbicide chlorimuron-ethyl caused mild intoxication symptoms when applied to seedlings of capixingui and açoita-cavalo; also, it was not selective for the guaritá species grown in Jaboticabal. All species showed selectivity to the herbicides sethoxydim, fomesafen, haloxyfop-methyl, and nicosulfuron, as their growth and initial development were not influenced. The herbicide bentazon caused high percentages of injury to açoita-cavalo plants in both cultivation places, but it did not influence the growth and development of the species.

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Controle do capim-braquiária associado à nutrição com boro no cultivo do mogno-africano em sistema silvipastoril

Cited by 5 publications

References 4 publications

Herbicides selectivity on seedlings of White Leadtree (Leucaena leucocephala)

Herbicides selectivity on seedlings of White Leadtree (Leucaena leucocephala)

Selectivity of Herbicides to Native Tree Species in Brazil

Selectivity of herbicides applied to Brazilian tree species at post-emergence

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