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Giant sensitiveplant interference in cassava

Published online by Cambridge University Press:  20 January 2017

Bamidele S. Alabi
Affiliation:
Federal College of Agriculture, Moor Plantation, Ibadan, Nigeria
Akinola A. Agboola
Affiliation:
Department of Agronomy, University of Ibadan, Ibadan, Nigeria
Bradley A. Majek
Affiliation:
Rutgers Agricultural Research and Extension Center, 121 Northville Road, Bridgeton, NJ 08302

Abstract

Giant sensitiveplant interference at different population densities in cassava established at 10,000 plants ha−1 was investigated on a Ferric Luvisol in a humid tropical environment. Interference for 12 mo was compared at 0, 10,000, 20,000, 30,000, and 40,000 plants ha−1 and at natural populations (averaging 630,000 plants ha−1) in four randomized complete blocks. Results showed that the order of cassava growth parameter response to giant sensitiveplant interference for 12 mo was leaf number > height > stem girth > leaf size = petiole length. The natural population density of giant sensitiveplant reduced growth faster and more than populations of 10,000 to 40,000 plants ha−1 in cassava. All giant sensitiveplant populations from 10,000 plants ha−1 and higher reduced storage root yield in cassava 12 mo after planting. Yield reduction increased as giant sensitiveplant population increased and the highest reduction of 85% occurred in the natural population of giant sensitiveplant.

Type
Weed Biology and Ecology
Copyright
Copyright © Weed Science Society of America 

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