Estimation of herbicide bioconcentration in sugarcane (Saccharum officinarum L.)

Cerdeira, A. L.; Paraíba, L. C.; Queiroz, S. C. do N. de; Matallo, Marcus Barifouse; Franco, Daniel Andrade de Siqueira; Ferracini, V. L.

doi:10.1590/0103-8478cr20120466

Cited by 8 publications

(6 citation statements)

References 22 publications

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“…The higher DIU tissue retention time in relation to the other herbicides can be explained by the higher Kow value of 707.94 (Cerdeira et al., 2015) and the lower solubility in water (42 mg L −1 ) than the other compounds. According to Call et al.…”

Section: Resultsmentioning

confidence: 97%

Bioconcentrations of herbicides used in sugarcane crops in tilapia (Oreochromis niloticus) and the risk for human consumption

Jonsson¹,

Moura

Ferracini³

et al. 2019

Heliyon

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The practice of intensive herbicide use in the sugarcane industry has a high risk of compromising the quality of the water and the organisms that live there due to losses through runoff, leaching and other processes. In this work, the dynamics of four herbicides present in three different mixtures were evaluated through their incorporation and elimination in the muscle tissue of tilapia ( Oreochromis niloticus ). The highest mean values of bioconcentration factors were 1.730 for ametryn, 0.891 for tebuthiuron, 0.322 for hexazinone and 4.783 for diuron. Diuron presented the highest risk regarding the consumption of tilapia fillets by the population. However, considering that the fish would reach maximum levels of diuron when exposed to extremely high concentrations, an individual weighing 70 kg would need to ingest approximately 1.5 kg of this food product to surpass the acceptable daily intake of 0.007 mg kg −1 body weight. It was concluded that the risk of injury to the population consuming tilapia fillets from fish exposed to herbicides in water arising from sugarcane activities is very low. According to the risk estimation performed in this work, which is substantiated by the assumptions of the World Health Organization and the International Life Sciences Institute, there is a low risk of injury to the population consuming tilapia fillets from fish exposed to water containing herbicides in concentrations arising from sugarcane activities. However, as the risk was estimated from laboratory conditions, caution should be taken where herbicide applications are carried out with high frequency near water bodies, as the consumption of fish from these areas is quite common.

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Section: Resultsmentioning

confidence: 97%

Bioconcentrations of herbicides used in sugarcane crops in tilapia (Oreochromis niloticus) and the risk for human consumption

Jonsson¹,

Moura

Ferracini³

et al. 2019

Heliyon

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“…Estudos de Jones e Griffin (2008), Faria et al (2014), Cerdeira et al (2015), Dias et al (2017) e Silva et al (2018) avaliaram os efeitos da aplicação de sulfentrazone em cana-de-açúcar e verificaram que a seletividade pode variar com o modo de aplicação, dose do herbicida, textura do solo ou ainda com a variedade. As variedades CTC série 9000 e CTC 14 apresentam porte de crescimento ereto, período de colheita precoce para CTC 9001 e CTC 9003, médio para a CTC 9004 e tardio para CTC 14 (CTC, 2018).…”

Section: Introductionunclassified

Seletividade de sulfentrazone aplicado em pré-plantio incorporado e em pré-emergência da cultura da cana-de-açúcar

Silva¹,

Silva²,

Aiello³

et al. 2019

COLLOQ AGRARIAE

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Os herbicidas podem ser seletivos ou não a cana-de-açúcar, aplicados em pré-plantio incorporado (PPI) e pré-emergência (PRÉ) das plantas daninhas e da cultura. O objetivo do trabalho foi avaliar a seletividade do sulfentrazone, aplicado tanto em pré-plantio incorporado, como em pré-emergência das seguintes variedades de cana-de-açúcar: CTC 9001, CTC 9002, CTC 9003 e CTC 14. O experimento foi conduzido em casa-de-vegetação no delineamento inteiramente casualizado com quatro repetições. Os tratamentos eram constituídos por quatro cultivares de cana-de-açúcar, submetidas a seis doses de sulfentrazone (0, 100, 200, 400, 800, 1600 g i.a. ha-1), tanto em PRÉ como em PPI. As avaliações de fitotoxicidade foram realizadas aos 30, 37, 44, 51 e 58 DAA e nesta última foi feita avaliação de massa seca da parte aérea. O sulfentrazone aplicado em PRÉ foi seletivo até a dose de 400 g i.a. ha-1 , apresentando sintomas de fitotoxicidade nas doses superiores. Em PPI, os sintomas de fitotoxicidade foram verificados a partir da dose de 400 g i.a. ha-1 A variedade CTC 9002 obteve maior acúmulo de massa seca tanto em PRÉ quanto em PPI. A CTC 14 tolera maiores doses de sulfentrazone em PRÉ e a CTC 9001, em PPI, tendo a massa seca menos prejudicada. Palavras-chave: Saccharum officcinarum; herbicida no solo; tolerância a herbicidas. Selectivity of sulfentrazone applied in pre-planting incorporated and in pre-emergence of sugarcane crop Abstract Herbicides can be selective or non-selective to sugarcane, applied both in pre-planting incorporated (PPI) and pre-emergence (PRE) of weeds and crop. The aim of the study was to evaluate the selectivity of sulfentrazone, applied in pre-planting and pre-emergence of the following sugarcane varieties: CTC 9001, CTC 9002, CTC 9003 and CTC 14. The experiment was carried out in a greenhouse with a completely randomized design with four replications. The treatments were composed of four sugarcane varieties, submitted to six doses of sulfentrazone (0, 100, 200, 400, 800, 1600 g a.i. ha-1), applied both in PRE and PPI. The phytotoxicity evaluations were performed at 30, 37, 44, 51 and 58 DAA and the aerial dry mass was evaluated at 58 DAA. The sulfentrazone applied in PRE was selective up to the 400 g a.i. ha-1 dose, showing more symptoms at higher rates. In PPI, the symptoms of phytotoxicity were verified from the dose of 400 g a.i. ha-1. The CTC 9002 variety presented a higher dry mass accumulation both in PRE and PPI. CTC 14 variety tolerated higher doses of sulfentrazone in PRE and the CTC 9001 in PPI, both having a lower decrease on its dry mass values.

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“…The sugarcane plantation occupies large fields, and for this reason, the weed control is done by herbicides [5]. The herbicide dosage estimation is calculated by sampling, causing problems of herbicide misapplication, due to the growth spatial variability of several weed species in the plantation.…”

Section: Introductionmentioning

confidence: 99%

Weed Identification in Sugarcane Plantation Through Images Taken from Remotely Piloted Aircraft (RPA) and kNN Classifier

Yano¹

2017

JFNS

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Abstract:The sugarcane is one of the most important crops in Brazil, the world´s largest sugar producer and the second largest ethanol producer. The presence of weeds in the sugarcane plantation can cause losses up to 90% of the production, caused by the competition for light, water and nutrients, between the crop and the weeds. Usually sugarcane plantations occupy large fields, and due to this, the weeds control is mostly chemical, which is more practical and cheaper than mechanical control. In the chemical control, the dosage and type of herbicides has been calculated by sampling, which causes problems of waste and misapplication of herbicides, since the degree of infestation may be variant from one location to another, as well as the species presents in the plantation. In order to avoid unnecessary waste in the herbicides application, there are some studies about weed identification using images taken from satellites, solution that have proved to have the advantage of covering the whole plantation, solving the problems of sample surveying, nevertheless, this method its dependent of a high weed density to ensure a good pattern recognition and its affected by the influence of clouds in the imagery quality. This work proposes a system for weed identification based on pattern recognition in imagery taken from a Remotely Piloted Aircraft (RPA). The RPA is able to fly at low altitude, so it is possible to take images closer to the plants and make the weed identification even in low infestation levels. In an initial evaluation, the system reached an overall accuracy of 83.1% and kappa coefficient of 0.775, using k-Nearest Neighbors (kNN) classifier.

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Estimation of herbicide bioconcentration in sugarcane (Saccharum officinarum L.)

Cited by 8 publications

References 22 publications

Bioconcentrations of herbicides used in sugarcane crops in tilapia (Oreochromis niloticus) and the risk for human consumption

Bioconcentrations of herbicides used in sugarcane crops in tilapia (Oreochromis niloticus) and the risk for human consumption

Seletividade de sulfentrazone aplicado em pré-plantio incorporado e em pré-emergência da cultura da cana-de-açúcar

Weed Identification in Sugarcane Plantation Through Images Taken from Remotely Piloted Aircraft (RPA) and kNN Classifier

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