Influência da palha e da simulação de chuva sobre a eficácia da mistura formulada clomazone + hexazinone no controle de plantas daninhas em área de cana-crua

Negrisoli, E.; Velini, Edivaldo Domingues; Corrêa, Marcelo Rocha; Rossi, Caio Vitagliano Santi; Carbonari, Caio Antônio; Costa, A. N.; Perim, Lucas

doi:10.1590/s0100-83582011000100019

Cited by 12 publications

(13 citation statements)

References 16 publications

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“…However, a 20 mm rain that fell over the area was important for the removal of a large part of the herbicide. When the applied mixture was clomazone and hexazinone, 2.5 mm of rain was sufficient to wash it away from sugar cane crop residue at a rate of 5.0 t ha -1 (Negrisoli et al, 2011).…”

Section: Resultsmentioning

confidence: 99%

S-metolachlor efficacy on the control of Brachiaria decumbens, Digitaria horizontalis, and Panicum maximum in mechanically green harvested sugarcane

Correia

Perussi²,

Gomes³

2012

Planta daninha

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-The aim of this study was to assess the efficacy of S-metolachlor applied in pre-emergence conditions for the control of Brachiaria decumbens, Digitaria horizontalis, and Panicum maximum in sugar cane mechanically harvested without previous burning of the crop (green harvest) with the crop residue either left or not on the soil surface. The experiments were established in the field according to a randomized complete block design with four repetitions in a 7 x 2 split-plot scheme. In the plots, five herbicide treatments were studied (S-metolachlor at 1.44, 1.92, and 2.40 kg ha , and isoxaflutole at 0.188 kg ha -1 ), and two control treatments with no herbicide application. In the subplots, the presence or absence of sugar cane crop residue on the soil surface was evaluated. S-metolachlor efficacy was not hampered by either 14 or 20 t ha -1 of sugar cane crop residue on the soil surface. When sugar cane crop residue was covering the soil surface, S-metolachlor at a rate of 1.44 kg ha -1 resulted in weed control similar at their larger rates, where as without the presence of crop residue, S-metolachlor controlled B. decumbens, D. horizontalis, and P. maximum at the rates of 1.92, 1.44, and 1.92 kg ha -1 , respectively. The herbicides clomazone and isoxaflutole were effective for the studied species, independently of the crop residue covering the soil surface. S-metolachlor caused no visible injury symptoms to the sugar cane plant. Clomazone and isoxaflutole caused visible injuries to the sugar cane plant. None of the herbicides negatively affected the number of viable culms m 2 or the culm height and diameter.Keywords: signal grass, crabgrass, guinea grass, crop residue. RESUMO -Objetivou-se com este trabalho avaliar o controle em pré-emergência de

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Section: Resultsmentioning

confidence: 99%

S-metolachlor efficacy on the control of Brachiaria decumbens, Digitaria horizontalis, and Panicum maximum in mechanically green harvested sugarcane

Correia

Perussi²,

Gomes³

2012

Planta daninha

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“…The study was conducted using the modified methodology (CORRÊA et al, 2006;NEGRISOLI et al, 2011;ROSSI et al, 2013) and replacing PVC experimental units with small plastic pots (capsules).…”

Section: Methodsmentioning

confidence: 99%

“…Applying the combination of clomazone and hexazinone (solubility = 1,100 and 33,000mg L -1 respectively) NEGRISOLI et al (2011) noted that 2.5mm of rainfall was sufficient to rinse the mixture of the sugarcane straw in the amount of Ciência Rural, v.45, n.12, dez, 2015.…”

Section: ------------------------------------------------------------mentioning

confidence: 99%

Performance of herbicides in sugarcane straw

et al. 2015

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“…However, there are also products on the market that are also efficient during the dry season. In recent studies Negrisoli et al (2011) and Toledo et al (2010) documented great weed control with amicarbazone, isoxaflutole, diuron and hexazinone, due to favorable physical and chemical characteristics like high water solubility and low adsorption capacity of clay particles and organic matter.…”

Section: Introductionmentioning

confidence: 99%

“…The phenotypic responses of sensitive plants exposed to amicarbazone include chlorosis, stunted growth, tissue necrosis, and death (Toledo et al, 2004;Dayan et al, 2009). Isoxaflutole is a sugarcane herbicide that causes characteristic bleaching of newly developed tissues of susceptible species followed by growth paralysis and necrosis (Luscombe et al, 1995;Pallet et al, 1998). This herbicide has low solubility in water, is stable at drought, and has a residual effect which may exceed 60 days after the outset of rains (Beltran et al, 2001;Rodrigues & Almeida, 2011).…”

Section: Introductionmentioning

confidence: 99%

Chemical control of morning glory as a function of water restriction levels

et al. 2014

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-Among the herbicides recommended for the dry season and registered to sugarcane crop, amicarbazone, isoxaflutole and the association diuron + hexazinone + sulfomethuron-methyl can be highlighted. These are pre-emergence herbicides efficient against broad-leaved weeds. Morning glory causes large losses in infested sugarcane fields by bending the stalks and interfering in harvesting. In this study the effectiveness of preemergence herbicides for two species of morning glory (Ipomoea hederifolia and Ipomoea grandifolia) was evaluated. Treatments were arranged in completely randomized factorial design (4 x 7). There were four periods of water restriction (0, 30, 60 and 90 days), seven chemical treatments [diuron + hexazinone + sulfometuron-methyl (1387 + 391 + 33.35 g a.i. ha -1 ), diuron + hexazinone + sulfometuron-methyl (1507.5 + 425 + 36.25 g a.i. ha -1 ), diuron + hexazinone + sulfometuron-methyl (1658.25 + 467.5 + 39.87 g a.i. ha -1 ), diuron + hexazinone + sulfometuronmethyl (1809 + 510 + 43.5 g a.i. ha -1 ), amicarbazone (1190 g a.i. ha -1 ), amicarbazone + isoxaflutole (840 + 82.5 g a.i. ha -1 )] and a control with no application. At 7, 14, 21 and 28 days after the restoration of moisture, control was visually evaluated. After the final evaluation, the dry mass of morning glories was measured. At 90 days of water restriction, diuron + hexazinone + sulfometuron-methyl was more effective to control I. hederifolia than the amicarbazone + isoxaflutole tank mixture. The four diuron + hexazinone + sulfometuronmethyl doses have reduced morning glory dry mass to zero; whereas treatments with amicarbazone have not. The most effective treatment for morning glory control was diuron + hexazinone + sulfometuron-methyl. This result may be due to a possible synergistic interaction.

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Influência da palha e da simulação de chuva sobre a eficácia da mistura formulada clomazone + hexazinone no controle de plantas daninhas em área de cana-crua

Cited by 12 publications

References 16 publications

S-metolachlor efficacy on the control of Brachiaria decumbens, Digitaria horizontalis, and Panicum maximum in mechanically green harvested sugarcane

S-metolachlor efficacy on the control of Brachiaria decumbens, Digitaria horizontalis, and Panicum maximum in mechanically green harvested sugarcane

Performance of herbicides in sugarcane straw

Chemical control of morning glory as a function of water restriction levels

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