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ADOPTION POTENTIAL OF HEDGEROW INTERCROPPING IN MAIZE-BASED CROPPING SYSTEMS IN THE HIGHLANDS OF WESTERN KENYA. 1. BACKGROUND AND AGRONOMIC EVALUATION

Published online by Cambridge University Press:  01 April 1997

K. D. SHEPHERD ,
J. K. NDUFA ,
E. OHLSSON ,
H. SJÖGREN  and
R. SWINKELS
K. D. SHEPHERD
Affiliation:
International Centre for Research in Agroforestry (ICRAF), PO Box 30677, Nairobi, KenyaKenya Forestry Research Institute (KEFRI), Maseno Agroforestry Research Centre, Maseno, PO Box 25199, Kisumu, Kenya ICRAF, Maseno Agroforestry Research Centre, Maseno, PO Box 25199, Kisumu, Kenya
J. K. NDUFA
Affiliation:
International Centre for Research in Agroforestry (ICRAF), PO Box 30677, Nairobi, KenyaKenya Forestry Research Institute (KEFRI), Maseno Agroforestry Research Centre, Maseno, PO Box 25199, Kisumu, Kenya ICRAF, Maseno Agroforestry Research Centre, Maseno, PO Box 25199, Kisumu, Kenya
E. OHLSSON
Affiliation:
International Centre for Research in Agroforestry (ICRAF), PO Box 30677, Nairobi, KenyaKenya Forestry Research Institute (KEFRI), Maseno Agroforestry Research Centre, Maseno, PO Box 25199, Kisumu, Kenya ICRAF, Maseno Agroforestry Research Centre, Maseno, PO Box 25199, Kisumu, Kenya
H. SJÖGREN
Affiliation:
International Centre for Research in Agroforestry (ICRAF), PO Box 30677, Nairobi, KenyaKenya Forestry Research Institute (KEFRI), Maseno Agroforestry Research Centre, Maseno, PO Box 25199, Kisumu, Kenya ICRAF, Maseno Agroforestry Research Centre, Maseno, PO Box 25199, Kisumu, Kenya
R. SWINKELS
Affiliation:
International Centre for Research in Agroforestry (ICRAF), PO Box 30677, Nairobi, KenyaKenya Forestry Research Institute (KEFRI), Maseno Agroforestry Research Centre, Maseno, PO Box 25199, Kisumu, Kenya ICRAF, Maseno Agroforestry Research Centre, Maseno, PO Box 25199, Kisumu, Kenya
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Abstract

The biophysical performance of hedgerow intercropping for soil fertility inprovement was assessed in a farmer-participatory trial in western Kenya over three years. Farmers successfully established dense hedgerows (median 6680 trees ha−1 on plots of 790 m2, but annual yields of hedgerow prunings of Leucaena leucocephala and Calliandra calothyrsus (1–4 t ha−1), were low compared to potentials in the region (4–8 t ha−1). The hedgerows reduced slopes from 7.2 to 4.5% within alleys (p < 0.01) but had no effect on grain yield over five seasons. Little of the variation in grain yield between hedgerow plots and control plots without hedgerows (adjusted r2 = 11%) and among control plots (adjusted r2 = 29%) could be accounted for by linear regression with measured agronomic and socio-economic variables. Fully researcher-managed trials are recommended for agronomic evaluation of complex agroforestry technologies.

Type
Research Article
Information
Experimental Agriculture , Volume 33 , Issue 2 , April 1997 , pp. 197 - 209
Copyright
© 1997 Cambridge University Press

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