Abstract:

To clarify the interaction of glyphosate and 2,4-D on the prevention and control of Mikania micrantha, The potting test was carried out in the Greenhouse. The control effects of the two herbicides on mikania micrantha were calculated. The best matching was evaluated by equivalent line. The results showed that there was significant synergism on mikania micrantha with glyphosate and 2,4-D. The most obvious synergism on the shoot inhibition is between the scope of (153.75 to 170.65 g a.i./hm2) and (161 to 175 g a.i./hm2), this index of interaction reached 1.58 and 1.60. But the most obvious synergism on the root inhibition is between the scope of (153.75 to 202.76 g a.i./hm2 )and (161 to 203.15 g a.i./hm2), the index of interaction reached 1.48 and 1.53. The best synergism ratio range of glyphosate and 2,4-D on shoot were 153.75-170.65 g a.i./hm2 161-175 g a.i./hm2 respectively, but the best synergism ratio range of glyphosate and 2,4-D on root were 153.75-202.76 g a.i./hm2 161~203.15 g a.i./hm2 respectively.