PARTE UTILIZADA=Used part: Parte aérea. 

ACCIÓN FARMACOLÓGICA= Pharmacological action: Diurético y depurativo, para combatir las indigestiones (especialmente en los bebes), antiiflamatorio, estomacal, descongestionante, contra malestares hepáticos. 

ZONA GEOGRÁFICA= Geografical zone: desde Méjico hasta Argentina. 

ÚLTIMOS AVANCES EN LA QUÍMICA Y ACTIVIDADES BACTERIOLÓGICAS EN LAS PLANTAS MEDICINALES= Medicinal plants, last advances on chemistry and bacteria activities on the medicinal herbs

The effects of different soil properties, ionic conditions and applied fertilizer on the movement of paraquat in soils were studied.  Paraquat is widely used as a herbicide in Taiwan.  Due to its stable structure and hard decompn., long-term accumulation in soils may lead to leaching into natural water.  In this study, three different soils were used for expts. with blank and compost treatment.  Electroanal. technique coupled with a chem. modified electrode was used to det. paraquat in leaching soln. with different treatments.  The exptl. results indicated that the movement of paraquat in soil was largely affected among different soil groups and ionic treatments.  The movement of paraquat in red soil was faster than that in sandstone-shale alluvial soil and slate alluvial soil.  Higher concn. of Cu2+ and Pb2+ decreased the adsorbed capacity of paraquat, leading to an increased movement of paraquat in soils.  Moreover, adding org. matter fertilizer could increase the adsorption of paraquat and thus decrease the movement of paraquat in soils.  This study provided an important ref. in further management and application of paraquat for farmland.

1) TOURSARKISSIAN, Martín. Plantas medicinales de Argentina : sus nombres botánicos, vulgares, usos y distribución geográfica. Buenos Aires : Hemisferio Sur, 1980, p.2.

2) YANG, Ting-Hao; CHEN, Horng-Ji; ZEN, Jyh-Myng. Electrochemical studies of movement of paraquat in soils treated with compost and metal ions. Zhonghua Nongxue Huibao. 2006, vol.7 , nº4 , p.363-386.