Adsorption and Desorption Isotherms of the Nonpolar Fungicide Chlorothalonil in a Range of Temperate Maritime Agricultural Soils

2012 ◽  
Vol 223 (7) ◽  
pp. 3975-3985 ◽  
Author(s):  
Agnieszka A. Piwowarczyk ◽  
Nicholas M. Holden
Keyword(s):  
Agricultural Soils ◽  
Adsorption And Desorption ◽  
Desorption Isotherms

Sorption of Metribuzin and Metolachlor in Alaskan Subarctic Agricultural Soils

Weed Science ◽  
1992 ◽  
Vol 40 (1) ◽  
pp. 155-160 ◽  
Author(s):  
Jeff S. Graham ◽  
Jeffery S. Conn
Keyword(s):  
Organic Carbon ◽  
Carbon Content ◽  
Soil Type ◽  
Surface Soil ◽  
Agricultural Soils ◽  
Freundlich Isotherm ◽  
Organic Carbon Content ◽  
Surface Soils ◽  
Adsorption And Desorption ◽  
Equilibration Temperature

Adsorption and desorption of metribuzin and metolachlor were studied for 0- to 15- and 30- to 45-cm soil depths and at 5 and 28 C temperatures for two subarctic Alaskan agricultural soils. Surface soils had five to eight times the organic carbon content of deeper soils and had lower Freundlich isotherm slopes (1/n) for both herbicides. Surface soil Freundlich coefficients (Kf) were affected by both soil type and equilibration temperature, with soil type accounting for greater than 80% of the variation in Kf. Surface soil mean Kfvalues ranged from 1.5 to 2.4 for metribuzin and 4.4 to 9.2 for metolachlor. For soils from the 30- to 45-cm depth, neither soil type nor temperature affected Kf. Isotherm slopes for desorption were less than adsorption, indicating hysteresis. Regressions between desorption Kfand maximum herbicide adsorbed prior to desorption were highly significant with coefficients of determination (r2) between 0.50 and 0.99.

Adsorption and Desorption of Carbendazim and Thiamethoxam in Five Different Agricultural Soils

2019 ◽  
Vol 102 (4) ◽  
pp. 550-554 ◽  
Author(s):  
Lingxi Han ◽  
Qiqing Ge ◽  
Jiajia Mei ◽  
Yanli Cui ◽  
Yongfei Xue ◽  
...  
Keyword(s):  
Agricultural Soils ◽  
Adsorption And Desorption

Pedotransfer functions to estimate the adsorption and desorption of sulfadiazine in agricultural soils

2019 ◽  
Vol 691 ◽  
pp. 933-942 ◽  
Author(s):  
M. Conde-Cid ◽  
J.C. Nóvoa-Muñoz ◽  
M.J. Fernández-Sanjurjo ◽  
A. Núñez-Delgado ◽  
E. Álvarez-Rodríguez ◽  
...  
Keyword(s):  
Agricultural Soils ◽  
Pedotransfer Functions ◽  
Adsorption And Desorption

scholarly journals Adsorption and Desorption Behavior of Herbicide Mefenpyr-diethyl in the Agricultural Soils of Morocco

2018 ◽  
Vol 7 (5) ◽  
pp. 386-395 ◽  
Author(s):  
Abdellah El Boukili ◽  
Nidae Loudiyi ◽  
Ahmed El Bazaoui ◽  
Abderrahim El Hourch ◽  
M'Hamed Taibi ◽  
...  
Keyword(s):  
Organic Matter ◽  
Adsorption Capacity ◽  
Agricultural Soils ◽  
Organic Matter Content ◽  
Matter Content ◽  
Isotherm Models ◽  
Desorption Process ◽  
Adsorption And Desorption ◽  
Total Percentage ◽  
Adsorption Isotherm Models

The present study was conducted in order to investigate the adsorption and desorption behavior of Mefenpyr-diethyl (MFD) using the batch equilibration technique in four soils, with different ranges of organic matter content, from different regions of Morocco orders of Benimellal (Soil 1), Settat (Soil 2), Sidi Bettach (Soil 3) and EL Hajeb (Soil 4). The adsorption isotherm models Langmuir, linear and Freundlich were used to compare the adsorption capacity of the soils. The results indicated that the Freundlich equation provided the best fit for all adsorption data. The values of KF and Kd ranged from 4.45 to 15.9 and 4.30 to 18.30 L.kg-1 , respectively. The calculated total percentage of desorption values from the Soil 1, Soil 2, Soil 3 and Soil 4 after the four desorption process were 59 %; 55,6 %; 37,5 % and 52,5%, respectively. Highest adsorption and desorption were observed in soil 1, and the lowest was in soil 3. According to the adsorption and desorption results, organic matter and clay seemed to be the most important factors influencing the adsorption capacity of MFD.

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