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Propagules of Purple Nutsedge (Cyperus rotundus) in Soil

Published online by Cambridge University Press:  12 June 2017

Gamini Siriwardana  and
Roy K. Nishimoto
Gamini Siriwardana
Affiliation:
Dep. Hortic., Univ. Hawaii, Honolulu, HI 96822
Roy K. Nishimoto
Affiliation:
Dep. Hortic., Univ. Hawaii, Honolulu, HI 96822
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Abstract

The upper 30 cm of soil in a field infested with purple nutsedge (Cyperus rotundus L. #3 CYPRO) contained 4900 to 5100 corms and tubers/m2 6 weeks after soil rotovation and irrigation. The upper 4, 8, 12 and 16 cm of soil had 45, 79, 95 and 99%, respectively, of the corms and tubers. Lower depths of soil contained larger tubers with higher percent dry matter than the shallow depths. Of the total number of corms and tubers, 51% were from the parent population. At 6 weeks, only 15% of the total tuber and corm population were not connected to aerial parts. Tubers from the parent population had a higher fresh weight than those from the new population. Parent tubers occurred singly or in chains of up to eight tubers.

Keywords

Weed biologyvegetative reproductioncormstuberslife historyglyphosateCYPRO.
Type
Research
Information
Weed Technology , Volume 1 , Issue 3 , July 1987 , pp. 217 - 220
Copyright
Copyright © 1987 by the Weed Science Society of America 

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References

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