Forage Plants and Weeds That Are Sensitive to Atmospheric Clomazone Residuals

Silva, M.M.; Santos, José Barbosa dos; Ferreira, E.A.; Brito, Orlando Gonçalves; Donato, Luan Mateus Silva; Santos, Maurinho Luiz dos

doi:10.1590/s0100-83582017350100059

Cited by 4 publications

(2 citation statements)

References 16 publications

(14 reference statements)

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“…In the treatments with clomazone, there was no significant difference between doses, even when the sorghum seeds were treated with Permit Star (safener), and all of them presented strong chlorosis (Table 1). In an experiment carried out by Silva et al (2017) in order to assess the sensitivity of forage and weed plants to atmospheric residual concentrations of clomazone, the authors observed a gradual increase in intoxication of sorghum plants according to the evaluation periods, with higher values in the concentration of 0.20 mg L -1 (equivalent to a dose of 360 g ha -1 ), corroborating the results found in this study.…”

Section: Greenhouse -Sandy Clay Loam Soilsupporting

confidence: 85%

Herbicide Selectivity in Preemergence of Sweet Sorghum Cultivated in Different Soil Texture

Lima

Carvalho

Padovese

et al. 2020

RBMS

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Sweet sorghum (Sorghum bicolor (L.) Moench) is an interesting alternativefor biomass and ethanol production, however, so far there is very limited knowledge regarding selective herbicide options for weed control in this crop. The objective of this study was to evaluate the selectivity of preemergence herbicides for sweet sorghum. This research was composed by two steps: in the first one, a greenhouse screening was carried out with several herbicide treatments and in the following step the most selective treatments were evaluated on field conditions. In sandy clay loam texture soil, the treatments involving atrazine (1000 and 2000 g ha-1), amicarbazone (210 g ha-1), trifluralin (500 g ha-1) and flumioxazin (25 g ha-1) provided the greatest levels of selectivity to sweet sorghum. In clay soil (64.7% clay), the treatments with atrazine (1000, 1500 and 2000 g ha-1), amicarbazone (280 g ha-1), S-metolachlor (480 g ha-1), [atrazine + S-metolachlor] ([601+471,2 g ha-1), pendimethalin (500 g ha-1) and imazethapyr (42.4 and 63.6 g ha-1) provided the lowest levels of crop injury, and were considered as the most selective for sweet sorghum. Herbicide treatments applied to sandy clay loam soil provided more injuries to sweet sorghum than those applied to clay soil.

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Section: Greenhouse -Sandy Clay Loam Soilsupporting

confidence: 85%

Herbicide Selectivity in Preemergence of Sweet Sorghum Cultivated in Different Soil Texture

Lima

Carvalho

Padovese

et al. 2020

RBMS

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“…However, the results presented are semi-quantitative and require calibration curves for each used herbicide, indicator species and substrate. This technique remains widely used in studies of persistence, dissipation, leaching, biological activity and dose-response of herbicides in soils (Nunes & Vidal, 2017;Pereira et al, 2017;Silva et al, 2017). Nonetheless, there are few studies with indaziflam in tropical soils that are conducted with biological techniques.…”

Section: Introductionmentioning

confidence: 99%

Selection of vegetable indicators of indaziflam residues in soil

Braga

Ferreira

Teixeira

et al. 2020

Agraria

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Studies on the behavior of herbicides in the soil (sorption, leaching and persistence) can be conducted by using biological and chemical methods. To use the biological method it is necessary to select species that present, in low concentrations of the herbicide, an easily quantified response in a short period of time. In this research the response of nine vegetable species was quantified in an inert substrate with different concentrations of indaziflam. The response of these species to indaziflam was quantified at 21 days after sowing by means of visual evaluation of the poisoning symptom and the accumulation of dry weight of the plants. All evaluated species were sensitive to indaziflam. The most sensitive species was maize, while sorghum, wheat and oat were the most sensitive species. However, the ease of cultivation of sorghum and its rapid growth, coupled with high sensitivity to indaziflam, make this species more suitable as a test plant for this herbicide. It is concluded that sorghum, wheat and oat can be used to detect indaziflam residues in soils.

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