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African Crop Science Journal
African Crop Science Society
ISSN: 1021-9730 EISSN: 1021-9730
Vol. 4, No. 3, 1996, pp. 365-372
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Bioline Code: cs96077
Full paper language: English
Document type: Short Communication
Document available free of charge
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African Crop Science Journal, Vol. 4, No. 3, 1996, pp. 365-372
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Lupwayi, N.Z.; Tedla, Abate & Regassa, Hailu
Résumé
Un essai la ferme, dans lequel les trefles du ble melangees
au traitement de la culture etait compae avec un controe non
fertilise et N-fertilise ( 23 kg N par hectare) des
traitements du ble de qualite pure, ete mene a Ginchi ( 2200 m au dessus
asl) dans les regions montagneuses ethiopiennes. Comparativement
au conte du meilleur ble, l'inclusion des trefles dans le ble
abondamment produit Deneba a donne plus de matieres seches du
fourrage (MSF) (5.20 contre 3.16 tonnes par hectare), avec un
abondant rendement N (36.35 contre 12.68 kg N par hectare) et
une digestibilite DM in vitro (51.7 contre 45.2%), sans reduction
drendement abondant des grains du ble (1.39 contre 1.98 tonnes
par hectare). A Ginchi, il y a meme plus de fourrages (9.58
contre 3.12 tonnes par hectare) avec le plus haut contenu de N
(117.05 contre 15.03 kg par hectare) et la digestibilite DM
(48.6 contre 34.9% etait produit sous une culture mixte, mais cela
eu lieu aux depens du rendement des graines du ble N fertilise a
produit le plus grand rendement de grains dans chaque centre.
La trfle DM, le nombre de nodule, la dimension du nodule,
l'activivite du nodule (couleur interne) et le rendement du
nitrogne etaient tous plus eleves Ginchi que Deneba. Au cours
de la seconde saison, let non residuel de la trefle sur le
rendement du ble etait detecte. Cependant, c'etait sur la base
de l'augmentation de la quantite et la qualite, avec moins det
sur le rendement de grain du ble pendant la premire saison, on
peut conclure que la production du ble a le potentiel d'augmenter
la disponibilite du fourrage pendant la saison seche pour nourrir
le betail en regions montagneuses ethiopiennes.
Mots Clés
Trefle, culture mixte, sur terrain, vertisols, du ble
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On-farm integration of forage legumes into cereal cropping systems in the Ethiopian highlands
Lupwayi, N.Z.; Tedla, Abate & Regassa, Hailu
Abstract
An on-farm trial, in which a wheat-clover mixed cropping
treatment was compared with un-fertilised (control) and
N-fertilised (23 kg N ha-1) pure wheat treatments, was
conducted at Ginchi (2200 metres above sea level (m asl)) and
Deneba (2600 m asl) in the Ethiopian highlands. Compared with
the pure wheat control, inclusion of clover in the wheat at
Deneba produced significantly more fodder dry matter (DM)
(5.20 vs 3.16 t ha-1), with higher N yield (36.35 vs 12.68 kg N
ha-1) and in vitro DM digestibility (51.7 vs 45.2 %), without
reducing wheat grain yield significantly (1.93 vs 1.98 t ha-1). At
Ginchi, even more fodder (9.58 vs 3.12 t ha-1) with higher N
content (117.05 vs 15.03 kg N ha-1) and DM digestibility
(48.6 vs 34.9 %) was produced under mixed cropping, but this
occurred at the expense of wheat grain yield (0.91 vs 1.39 t
ha-1). The N-fertilised wheat produced the highest grain yield at
each site. Clover DM, nodule number, nodule size, nodule activity
(internal colour) and nitrogen yield were all higher at Ginchi
than at Deneba. In the second season, no residual effect of
clover on wheat yield was detected. However, on the basis of
the increase in feed quantity and quality, with little effect on
wheat grain yield in the first season, it can be concluded
that integration of wheat and clover production has potential to
increase fodder availability for dry season feeding of
livestock in the Ethiopian highlands.
Keywords
Clover, mixed cropping, on-farm, vertisols, wheat
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© Copyright 1996 - African Crop Science Society
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