There have always been divided opinions and a paucity of data regarding the impact of vegetation management as malaria prevention measure, e.g. cutting grass (not a recommended method according to WHO; see page 100 in attached Malaria Control handbook).
The attached article appears to suggest the most promising evidence yet, where trimming an invasive plant species seemed to substantially cut down mosquito populations, without use of insecticides (see also http://www.bbc.com/news/health-40495958).
It would be interesting to see whether such approaches could actually impact malaria cases, especially since older mosquitoes were culled. Does anyone have any success experience with methods like this?