Imperata cylindrica seeds had a germination of 84.5% after 3 weeks under alternating temperatures of l5/35⁰C. Each parent shoot produced 181.3 shoots after 6_^1/2 months in the field. After l2_^1/2 months, 71.9% of the rhizomes occurred in the surface 15 cm of soil while the remaining 28.1% occurred between l5 and 30 cm. The study of the pattern of rhizome growth showed that a young rhizome network is established after l0-l4 weeks with 2-4 rhizomes below each locus of shoots. The factorial experiment on the depth of burial x rhizome length showed that rhizomes buried at 10 cm or more did not germinate. Glyphosate at 2.5-3.7 kg/ha provided very effective control for 5 months. Of the three additives studied for synergistic effects with glyphosate,only sulphate of ammonia appears promising. 

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