Behavior of Cinosulfuron in Paddy Surface Waters, Sediments, and Ground Water

Ferrero, Aldo; Vidotto, Francesco; Gennari, Mara; Nègre, Michéle

doi:10.2134/jeq2001.301131x

Cited by 29 publications

(34 citation statements)

References 20 publications

(30 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The increase in concentration in the sediment during the first few days after the treatment suggests that an adsorption process occurs, which is in agreement with the observations reported by Braschi et al [3]. This behaviour was observed in both years and it is in agreement with the results of a previous study carried out in the same site with the herbicide cinosulfuron [6].…”

Section: Pretilachlor In Paddy Sedimentsupporting

confidence: 92%

“…The parameter a was correspondent to the highest concentration, recorded immediately after the treatment (DAT = 0). In the sediment, an increase in pretilachlor concentration was observed in the first 6 where a was correspondent to the concentration recorded immediately after the treatment (DAT = 0).…”

Section: Discussionsupporting

confidence: 73%

“…The 20-yr mean annual rainfall and temperature for the study area are 850.9 mm and 9.9 °C, respectively. A more detailed description of the study area is reported in a previous study carried out in the same site to evaluate the environmental behaviour of the herbicide cinosulfuron [6][7][8][9][10][11].…”

Section: Experimental Site and Samplingmentioning

confidence: 99%

See 2 more Smart Citations

Dissipation of pretilachlor in paddy water and sediment

et al. 2004

View full text Add to dashboard Cite

-A two-year field study (2001)(2002) was carried out in N-W Italy to study the behaviour of pretilachlor [2-chloro-2,6-diethyl-N-(2-propoxyethyl)acetanilide] in water and sediment of a rice field. Pretilachlor is a selective pre-emergence herbicide which is effective against annual grasses, sedges and broad-leaved weeds. The herbicide was applied in pre-seeding on a flooded rice field where water circulation was stopped for about 3 weeks after treatment. Pretilachlor concentration in the paddy water decreased by more than 90% during the first three weeks after the treatment. The amount of the herbicide in the paddy water gradually fell to levels below the sensitivity of the analytical method when water circulation was re-established. The pretilachlor concentration in the sediment gradually increased after the treatment, reaching the highest value 5 to 6 days later. The average DT 50 in water and sediment were 6.77 and 28.76 days in 2001, 4.68 and 15.01 days in 2002, respectively. The low percolation rate (0.95 and 0.79 mm day -1 in 2001 and 2002, respectively) and the high ratio of the herbicide adsorption on the sediment suggest that pretilachlor disappearance from the water was mainly the result of degradation.

show abstract

Section: Pretilachlor In Paddy Sedimentsupporting

confidence: 92%

Section: Discussionsupporting

confidence: 73%

See 1 more Smart Citation

Dissipation of pretilachlor in paddy water and sediment

et al. 2004

View full text Add to dashboard Cite

show abstract

“…Concerns on negative effects of rice production on the environment have been remarkably increasing especially over the last years. Most of these issues are related to the emission of methane gases which cause global warming and the harmful effects of pesticide application to water, air, and bio-diversity of the ricebased production systems (Ferrero et al 2001. These new concerns may gradually lead to further restrictions in rice production in several rice cultivation areas.…”

Section: Health and Environmental Concernsmentioning

confidence: 99%

Meeting the challenges of global rice production

Nguyen¹,

Ferrero

2006

Paddy Water Environ

243

132

View full text Add to dashboard Cite

East countries. He possesses a wide experience in the field of the weed eco-biology and weed control in rice systems. He has been co-ordinator of European research projects funded by the European Union. He currently co-ordinates the project "EU-India Rice districts network promotion through agroeconomical, cross cultural, and technical actions" (RICE-NET) aimed at studying agro-economical, cultural, and historical traits of the rice cultivation in the European and Indian rice districts, in order to improve socio-economical relationships between the two geographical areas. He is referee and member of the editorial board of several international journals.Abstract Rice is the second most widely grown cereal crop and the staple food for more than half the world's population. More than 3 billion people consume more than 100 kg of rice per year. Rice is cultivated on 155.5 million ha with an average growth rate of 0.39% a year, in the last 30 years. In the near future, the possibility for expanding areas under rice-based systems will remain very limited because of the scarcity of global water resources for agri-2 culture, the expansion of urban and industrial sectors in Asia where land is already limited and the high costs of developing new lands that are suited for rice production in Sub-Saharan Africa and Latin America. The average growth rate of rice yield was 3.68% per year in the early 1980s, but it has decreased to 0.74% per year in the late 1990s. Several factors may contribute to the decline of the area under cultivation and in yield growth. The most important of these factors are: limited returns as we approach the yield potential of the high yielding varieties, declining productivity in intensive rice production systems, pressures from abiotic and biotic stresses, low returns in developing countries, increasing production costs in industrialized countries, and increasing public concern for the protection of environmental resources. One of the most effective means of addressing the issues in rice cultivation and raising the average yields at the farm level is through research and subsequent dissemination of the resulting data. Rice science has made considerable progress. In the area of rice varietal improvement, recent advances in hybrid rice and the new rice for Africa (NERICA) are just two examples of the successful contributions of science to the development of rice. Research could also help reduce the gap between the potential yield obtained on experimental stations and the actual yield obtained in the fields. This could be possible by developing and promoting rice integrated crop management (RICM) systems for improving productivity and reducing the production cost per unit of output. The need for a sustainable increase in rice production affects everyone. The International Year of Rice provide us with a chance to improve food security, alleviate poverty and preserve the environment for the billions of people for whom Rice is Life.

show abstract

“…The hydrolysis rate depends on the structural features of the molecule and increases with increasing temperature 1. As far as cinosulfuron is concerned, degradation studies in sterilised buffer solutions at 25 °C confirm a rapid degradation at pH 4 (2.5% of the initial amount of cinosulfuron was found after 41 days) and a much slower degradation at pH 7 and 9 (more than 86% was still present after 111 days) 2. Degradation in aqueous solution was enhanced by the presence of photocatalysts such as titanium dioxide 3, 4.…”

Section: Introductionmentioning

confidence: 96%

Cinosulfuron: chemical and biological degradability, adsorption and dissipation in flooded paddy field sediment

Nègre

Baiocchi

Gennari

2005

Pest Management Science

View full text Add to dashboard Cite

Cinosulfuron is a sulfonylurea herbicide largely used in the extensive cultures of flooded rice in North Italy. The degradation of cinosulfuron has been investigated in sterile aqueous solutions at 30 degrees C at different pH values. It was rapidly degraded at acidic pH (half-lives 3, 9 and 43 days at pH 4, 5 and 6, respectively) while the half-life was > 1 year at pH 7 and 9. Two degradation products formed by cleavage of the sulfonylurea bridge were identified by LC-MS. Degradation by selected mixed microbial cultures tested in aerobic and anaerobic conditions was very slow and attributable to chemical hydrolysis due to the acidic pH of the cultural broths. Degradation took place in freshly collected rice field water treated for two years with cinosulfuron but, in this case also, chemical hydrolysis prevailed over microbial degradation. In contrast, in flooded sediment simulating the paddy field environment, the dissipation rate of cinosulfuron was higher than expected from chemical hydrolysis according to the pH of the system, indicating the involvement of soil microflora. Although the herbicide exhibited a reduced affinity for the sediment surfaces demonstrated by the low value of the K(f) Freundlich coefficient (0.87 on a micromolar basis), the rapid dissipation observed in the simulated paddy field should prevent its leaching to ground water.

show abstract

Behavior of Cinosulfuron in Paddy Surface Waters, Sediments, and Ground Water

Cited by 29 publications

References 20 publications

Dissipation of pretilachlor in paddy water and sediment

Dissipation of pretilachlor in paddy water and sediment

Meeting the challenges of global rice production

Cinosulfuron: chemical and biological degradability, adsorption and dissipation in flooded paddy field sediment

Contact Info

Product

Resources

About