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Biological Agriculture & Horticulture
An International Journal for Sustainable Production Systems
Volume 18, 2000 - Issue 2
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Original Articles

A Bio-Economic On-Farm Evaluation of the Use of Sweet Potato for Complementary Weed Control in a Yam/Maize/Egusi/Cassava Intercrop in Pigeon Pea Hedgerows in the Rain Forest Belt of Nigeria

F. O. Anuebunwa National Root Crops Research Institute,Umudike, P.M.B. 7006, Umuahla, Abia State, Nigeria
Pages 95-102 | Received 05 Jun 1999, Accepted 27 May 2000, Published online: 24 Apr 2012

References

  • Anuebunwa , F. O. 1991 . Weed control in yam/maize/cassava intercrop for resource limited farmers . Nigeria Journal of Weed Science , 4 : 43 – 69 .
  • Anuebunwa , F. O. 1992 . A bio-economic evaluation of intercropping arrangement in a yam-cassava cropping system in the rain forest belt of Nigeria . Biological Agriculture & Horticulture , 8 : 251 – 260 .
  • Clegg , M. 1972 . “ Light and yield related aspects of sorghum canopies. ” . In Sorghum in the Seventies Edited by: Rao , N. G.P. and House , L. R. 279 – 299 . New Delhi , , India : Oxford and IBH Publishing Co. .
  • FACU . 1985 . On-Farm Adaptive Research: Diagnostic Survey of Owerri ISADAP Extension Area, Imo State. Ibadan , , Nigeria : Federal Agricultural Coordinating Unit .
  • Hilderbrand , P. E. and Poey , F. 1985 . On Farm Agronomic Trials in Farming Systems Research and Extension. Boulder, Colorado , , U.S.A. : Lynne Rienner Publishers Inc. .
  • NRCRI . 1987 . On-Farm Adaptive Research: Diagnostic Survey of Orlu ISADAP Extension Area, Imo State. Umudike, Umuahia , , Nigeria : National Root Crops Research Institute .
  • Odurukwe , S. O. and Anuebunwa , F. O. 1945 . Diagnostic Survey of Farming System of Okigwe Agricultural Zone, Imo State. Umudike, Umuahia , , Nigeria : National Root Crops Research Institute .
  • Orkwor , G. C.E. 1990 . Studies on the critical period of weed interference in yam intercropped with maize, okra, sweet potato and the biology of the associated weeds Nsukka, Nigeria. . PhD Thesis. University of Nigeria
  • Perrin , R. K. , Winkelmann , D. L. , Moscardi , E. R. and Anderson , J. R. 1976 . From Agronomie Data to Fanner Recommendations: An Economic Training Manual. , Information Bulletin 27 Mexico. : CIMMYT .
  • Unamma , R. P.A. , Anuebunwa , F. O. and Oputa , C. O. 1990 . On farm evaluation of different weed management alternative in yam/maize intercrop . Nigeria Journal of Weed Science , 3 : 59 – 66 .
  • Unamma , R. P.A. and Ene , L. S.O. 1984 . “ Critical period of weed interference in white yam intercropped with maize. ” . In 1984 Annual Report. 179 – 182 . Umudike, Umuahia , , Nigeria : National Root Crops Research Institute .
  • Unamma , R. P.A. , Odurukwe , S. O. , Okereke , H. E. , Ene , L. S.O. and Okoli , O. O. 1985 . Farming Systems of the Eastern Agricultural Zone of Nigeria. Umudike, Umuahia , , Nigeria : National Root Crops Research Institute .

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