Influence of soil pH, rainfall, dosage, and application timing of herbicide Merlin 750 WG (isoxaflutole) on phytotoxicity level in maize (Zea mays L.)

Soukup, Josef; Jursík, M.; Hamouz, Pavel; Holec, J.; Krupka, J.

doi:10.17221/3687-pse

Cited by 13 publications

(10 citation statements)

References 9 publications

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“…For this phenomenon (the results are presented in Table 2) higher values for the Freundlich constants, K Fdes , were obtained (3.66-32.56), showing a stronger retention of ibuprofen on soil particles in desorption processes than in adsorption processes. The desorption process was nonlinear, as indicated by n des values, which ranged from 0.84 to 2.79, suggesting differential distribution of adsorption site energies, as Soukup et al (2004) found for isoxaflutole sorption on soils. The low hysteresis index, H, values, which ranged from 0.42 to 0.66, indicated that ibuprofen adsorption in soils was reversible and that hysteresis occurred during desorption.…”

Section: Resultsmentioning

confidence: 76%

Mobility of ibuprofen, a persistent active drug, in soils irrigated with reclaimed water

González-Naranjo¹,

Boltes²,

Biel³

2013

PLANT SOIL ENVIRON

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Ibuprofen is not completely removed in wastewater treatment plants, and consequently, it may enter the soil through irrigation with reclaimed water. Subsequently, due to the reversible adsorption which takes place in the soil, this emerging pollutant can become bioavailable for plants. The adsorption reversibility of this anti-inflammatory compound on four agricultural soils was quantified with adsorption-desorption experiments. The adsorption was found to be almost linear, with a minimum n ads of 0.76 and a maximum of 1.08. In contrast, desorption was nonlinear, with a n des which ranged from 0.84 to 2.75. The hysteresis index values were low, ranging from 0.42 to 0.66; hence the process takes place reversibly. In addition, ibuprofen was found to be moderately fixed in the soils studied, with organic carbon distribution coefficient (K OC ) values which ranged between 139.75 and 238.17 L/kg. Therefore, we conclude that this pollutant could be bioavailable for soil microorganisms or plants exposed to it and may reach groundwater by leaching.

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Section: Resultsmentioning

confidence: 76%

Mobility of ibuprofen, a persistent active drug, in soils irrigated with reclaimed water

González-Naranjo¹,

Boltes²,

Biel³

2013

PLANT SOIL ENVIRON

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“…Under dry conditions, the efficacy of PRE herbicides usually decreases (Zhang et al 2001;Zanatta et al 2008); however, intensive precipitation after application of these herbicides can cause crop injury (Stickler et al 1969;Soukup et al 2004). This effect is especially important for sunflower because the selectivity of most herbicides is dependent on the position of the herbicide layer on the soil surface and the distribution of seeds on the soil profile.…”

mentioning

confidence: 99%

Efficacy and selectivity of pre-emergent sunflower herbicides under different soil moisture conditions

Jursík¹,

Soukup²,

Holec³

et al. 2015

Plant Prot. Sci.

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Jursík M., Soukup J., Holec J., Andr J., Hamouzová K. (2015): Efficacy and selectivity of pre-emergent sunflower herbicides under different soil moisture conditions. Plant Protect. Sci., 51: 214-222.We ranked the most frequently used pre-emergent herbicides in sunflower (Helianthus annuus) according to their efficacy and selectivity under different soil moisture conditions within 2008-2011. The efficacy of oxyfluorfen, aclonifen, acetochlor, dimethenamid, and propisochlor on the majority of weeds (Chenopodium album, Echinochloa crus-galli, Amaranthus retroflexus, Mercurialis annua, and Solanum physalifolium) was only slightly affected by the soil moisture and these herbicides can be used in arid and semiarid regions. The efficacy of linuron, prosulfocarb, and pethoxamid was strongly affected by soil moisture and was insufficient under dry conditions. The majority of herbicides showed good selectivity for sunflower. Crop injury rate of 5-15% was recorded after application of flurochloridone and acetochlor. For flurochloridone, the phytotoxicity increased due to irrigation after herbicide application. The highest sunflower injury rate (27-35%) was recorded after application of oxyfluorfen.

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“…The efficacy of preemergent herbicides is significantly affected by soil moisture; under dry conditions, their efficacy usually decreases. However, intense precipitation after the application of these herbicides can cause the transport of active ingredients in the soil profile, crop injury and/or leaching (Soukup et al 2004). Sandy soils, which usually have a lower sorption capacity, have a higher risk of herbicide leaching.…”

mentioning

confidence: 99%

Effect of precipitation on the dissipation, efficacy and selectivity of three chloroacetamide herbicides in sunflower

Jursík¹,

Kočárek²,

Hamouzová³

et al. 2013

PLANT SOIL ENVIRON

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The aim was to compare the efficacy, selectivity to sunflower and dissipation of three chloracetamide herbicides (acetochlor, metolachlor and pethoxamid) in dependence on precipitation after application. A small plot field trial was carried out with sunflower in Central Bohemia in 2010 and 2011. The remaining concentration of active ingredient in the soil of all studied herbicides was lower in the year with a higher temperature and a low level of total natural precipitation at the beginning of the growing season. Higher leaching of metolachlor and pethoxamid was recorded in irrigated plots. No leaching was found in the case of acetochlor. The highest leaching was found for metolachlor (9.2-25.5% in soil layer 5-10 cm). The highest phytotoxicity was found for acetochlor (9.8%) > pethoxamid (4.6%) > metolachlor (1.8%). The mean phytotoxicity in the irrigated plots was 6.9%, compared with 3.9% in the non-irrigated plots. The efficacy of the tested herbicide was affected by wet conditions. The highest efficacy on Chenopodium album, Amaranthus retroflexus, Echinochloa crus-galli and Solanum physalifolium was recorded after application of acetochlor and irrigation.

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Influence of soil pH, rainfall, dosage, and application timing of herbicide Merlin 750 WG (isoxaflutole) on phytotoxicity level in maize (Zea mays L.)

Cited by 13 publications

References 9 publications

Mobility of ibuprofen, a persistent active drug, in soils irrigated with reclaimed water

Mobility of ibuprofen, a persistent active drug, in soils irrigated with reclaimed water

Efficacy and selectivity of pre-emergent sunflower herbicides under different soil moisture conditions

Effect of precipitation on the dissipation, efficacy and selectivity of three chloroacetamide herbicides in sunflower

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