The results obtained frcm the experiment conducted to control Cyperus rotundus L. andT,ianthema i.oriulacusu um chern icall y are summarised here: 1. MSMA (Ansar 529) when applied at the rate of 3'48 to 5.22 (a. e.)/ha CvpelllS roticndus was controlled effectively. The repeated applications of this weedicide will control the weed most effectively.

2. E"!,ective control of Cvperus rctundus was not obtained by the appl teation of Daiapon even at the rate of 4.5 kg (a.e.)/ha.

3. Neither MSMA nor Dalapon was effective in controlling T'rianthema.

4. Effectiveness of M~Ml\ was dscr eased when it was applied in combination with Dal apon,

5. Tuberization in Cvpe rus rotundus was not effectively controlled by any of the two weedicldss used either singly or in combination.