Paraquat behavior in Costa Rican soils and residues in coffee

Constenla, Manuel A.; Riley, D.; Kennedy, Steve H.; Rojas, Cristián Guerra; Mora, Luis Eugenio Corral; Stevens, John E. B.

doi:10.1021/jf00100a022

Cited by 21 publications

(12 citation statements)

References 6 publications

(6 reference statements)

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“…Although paraquat is strongly bound by expanding clay lattices [7], soil organic matter can also adsorb large amounts of cationic herbicide [8]. The application of organic amendments to soil has beneficial effects, mainly because such amendments supply organic matter and other nutritive elements to the soil-plant system, but also because they contribute to controlling leaching and sorption of herbicides.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of paraquat on soil organic matter: Effect of exchangeable cations and dissolved organic carbon

Gondar

López

Antelo

et al. 2012

Journal of Hazardous Materials

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Section: Introductionmentioning

confidence: 99%

Adsorption of paraquat on soil organic matter: Effect of exchangeable cations and dissolved organic carbon

Gondar

López

Antelo

et al. 2012

Journal of Hazardous Materials

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“…Aguas Abarca y Ruepert, 1993Ruepert, , 1992Calderón, 1981;Carazo et al, 1984a;Castillo et al, 1994Castillo et al, , 1993Chacón, 1993;EPA, 1992;INCIENSA, 1988;Gómez, 1990;Logan y Schofield, 1984;Mora, 1990a;Rosales et al, 1992Rosales et al, , 1994Ryan, 1991;von Düszeln, 1991von Düszeln, , 1988 Alimentos de origen Bravo y Blanco, 1990;García, 1990García, , 1989von Düszeln, 1991;Werner, 1982. vegetal Alimentos de origen De la Cruz, 1989;Herrera, 1985;Logan y Schofield, 1984;Rodríguez, 1990;Rojas y Ruiz, animal 1989;Ruiz, 1987a y b;Ruiz y Rojas, 1994U.S.D.A. Meat andPoultry Inspection 1981 citado por Leonard, 1987;von Düszeln, 1991von Düszeln, , 1988Werner, 1982. Tejido adiposo Barquero, 1982;Barquero y Constenla, 1987, 1986aBarquero y Nielsen, 1987; humano Barquero y Thiel, 1985. Leche materna Barquero y Thiel, 1986;Umaña y Constenla, 1984. Suelos y sedimentos Abarca y Ruepert, 1993Ruepert, , 1992Carazo et al, 1984a, b y c;Castillo et al, 1994;Constenla et al, 1990…”

Section: Sustrato Referenciasunclassified

“…pepo) Han, 1992;von Düszeln, 1991. Brócoli (Brassica oleracea var. italica) INCIENSA, 1988;von Düszeln, 1991. Café (Coffea arabica) Cetinkaya, 1988;Cetinkaya et al, 1984;Constenla et al, 1990;Echandi y Segall, 1958;Gallardo, 1980;Koss, 1968;Pereira, 1960;Rojas, 1984. Cardamomo (Elettaria cardamomum) Han, 1992. Cebolla (Allium cepa) Gómez et al, 1991;Rodríguez, 1993. Coco rojo (Cocos nucifera) Han, 1992. Coliflor (Brassica oleracea var. botrytis) Gómez et al, 1991.…”

Section: Cultivo Referenciasunclassified

Consecuencias indeseables del uso de los plaguicidas en el ambiente.

García

2016

Agron. Mesoam.

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Some of the negative collateral effects on the environment by the use of pesticides are described. In addition, the main conditioning factors that induce poblems to occur with more frequency and intensity in developing countries, as compared to the industrialized countries, are noted. Finally, some options and provide examples aiming to decrease or eliminate the use of those substances and, consequently, the problems related to the use of pesticides, are suggested.

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“…Thus the doses reaching soil will be rather less than the amount applied. Such interception by weeds was thought an important factor in the limited accumulation of paraquat in coffee plantations in Costa Rica despite 20 years of annual applications and a low degradation rate in the soils 16…”

Section: Paraquat Behaviour In Plants and Soilmentioning

confidence: 99%

Paraquat and sustainable agriculture

Bromilow

2003

Pest Management Science

168

104

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Sustainable agriculture is essential for man's survival, especially given our rapidly increasing population. Expansion of agriculture into remaining areas of natural vegetation is undesirable, as this would reduce biodiversity on the planet. Maintaining or indeed improving crop yields on existing farmed land, whether on a smallholder scale or on larger farms, is thus necessary. One of the limiting factors is often weed control; biological control of weeds is generally of limited use and mechanical control is either often difficult with machinery or very laborious by hand. Thus the use of herbicides has become very important. Minimum cultivation can also be important, as it reduces the power required to work the soil, limits erosion and helps to maintain the organic matter content of the soil. This last aspect helps preserve both the structure of soil and its populations of organisms, and also sustains the Earth's soil as a massive sink for carbon, an important consideration in the light of global warming. The introduction of the bipyridinium herbicide paraquat in the early 1960s greatly facilitated weed control in many crops. Paraquat has the unusual property of being active only by direct spray onto plants and not by uptake from soil in which strong binding deactivates it. Together with its rapid action in light in killing green plant tissue, such properties allow paraquat to be used in many crops, including those grown by low-tillage methods. This paper reviews the ways in which agricultural systems have been and are being developed to make use of these properties, and provides a risk/benefit analysis of the world-wide use of paraquat over nearly 40 years.

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Paraquat behavior in Costa Rican soils and residues in coffee

Cited by 21 publications

References 6 publications

Adsorption of paraquat on soil organic matter: Effect of exchangeable cations and dissolved organic carbon

Adsorption of paraquat on soil organic matter: Effect of exchangeable cations and dissolved organic carbon

Consecuencias indeseables del uso de los plaguicidas en el ambiente.

Paraquat and sustainable agriculture

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