Cyperus rotundus(Nut Grass):
- It is a very persistent perennial sedge and occurs in all the crops.
- This weed spreads extensively and is a serious weed in many dry
- land and irrigated crops in Andhra Pradesh.

Control:
- Mechanical methods kill only the top growth with little effect on tubers.
- Herbicide like glyphosate @ 1.5 kg a.i/ha which translocate
rapidly into tubers to prevent regeneration of tubers.
- Other herbicides used for controlling this weed include 2,4-D@ 1.5 kg a.i/ha,sodium
or EE formulation and Glyphosate @ 1.0 kg.ha +2%
Ammonium sulphate is very effective.
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