Synergistic herbicidal composition containing penoxsulam and bentazon

Abstract

A synergistic mixture of penoxsulam and bentazon controls weeds in crops, especially rice and other cereal and grain crops, pastures, rangelands, IVM and turf. In addition to providing improved post-emergence herbicidal weed control, the mixture safens damage to rice.

What is claimed is: 
     
         1 . A synergistic herbicidal mixture comprising an herbicidally effective amount of (a) penoxsulam and (b) bentazon. 
     
     
         2 . The synergistic herbicidal mixture of  claim 1  in which bentazon is an agriculturally acceptable salt. 
     
     
         3 . The synergistic herbicidal mixture of  claim 2  in which bentazon is the sodium salt. 
     
     
         4 . The synergistic herbicidal mixture of  claim 1  in which the weight ratio of bentazon to penoxsulam is between about 13:1 and about 667:1. 
     
     
         5 . An herbicidal composition comprising an herbicidally effective amount of the synergistic herbicidal mixture of  claim 1  and an agriculturally acceptable adjuvant and/or carrier. 
     
     
         6 . A method of controlling undesirable vegetation which comprises contacting the vegetation or the locus thereof with or applying to the soil or water to prevent the emergence or growth of vegetation an herbicidally effective amount of the synergistic herbicidal mixture of  claim 1 . 
     
     
         7 . A method of  claim 6  for controlling undesirable vegetation in crops, especially rice and other cereal and grain crops, pastures, rangelands, IVM, aquatics and turf, which comprises contacting the vegetation or the locus thereof with or applying to the soil or water to prevent the emergence or growth of vegetation an herbicidally effective amount of the synergistic herbicidal mixture comprising an herbicidally effective amount of (a) penoxsulam and (b) bentazon.