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African Crop Science Journal
African Crop Science Society
ISSN: 1021-9730
EISSN: 2072-6589
Vol. 5, No. 2, 1997, pp. 201-207
Bioline Code: cs97026
Full paper language: English
Document type: Short Communication
Document available free of charge

African Crop Science Journal, Vol. 5, No. 2, 1997, pp. 201-207

 fr
Mugendi, D.N.; Mochoge, B.O.; Coulson, C.L.; Stigter, C.J. & Sang, F.K.

Résumé

L'impact des emondes de Cassia siamea inorpores dans le sol sur la production et la composition minerale des feuilles de mais et des grains a ete etudie dans une experimentation de culture en couloirs. Celle-ci a ete organisee en region semi-aride de Machakos au Kenya pendant les grandes et petites saisons pluvieuses de 1988. L'essai a ete mis en place en 1983. Chaque saison, le compose B du mais connu sous le nom de Katumani etait serre, sauf pendant les petites saisons pluvieuses de 1988 lorsque l'hybride 511 etait plante. Les parcelles etaient constituees de 3 allees cultivees entre les haies de cassia distantes entre elles de 3.6 m. Les haies etaient elaguees au debut de chaque saison pluvieuse. Les emonoles etaient ensuite incorporees dans les allees un jour avant la semence des graines. Les parcelles de contrle n'avaient pas de haies; les emondes n'y etaient donc pas incorporees. L'incorporation des emondes dans le sol des parcelles de traitement augmentait la teneur des elements mineraux nutritifs dans les feuilles et les grains de mais. Cela n'etait donc pas le cas dans les parcelles de contrle. La production des grains de mais par rangee s'est egalement averee plus importante dans les parcelles ou les emondes ont ete appliquees que dans celles de contrle. Cependant, en terme de surface la croissance de la production etait insuffisante pour pouvoir compenser la perte de la surface due a la presence des arbustes de Cassia siamea.

Mots Clés
Agroforesterie, culture en cauloir, arbustes de cassia

 
 en Effect of incorporating Cassia siamea prunings on maize yield in an alley cropping trial in semiarid Kenya
Mugendi, D.N.; Mochoge, B.O.; Coulson, C.L.; Stigter, C.J. & Sang, F.K.

Abstract

The influence of soil-incorporated Cassia siamea prunings on nutrient status of maize leaves, grain and yield was studied in an alley cropping experiment in semiarid Machakos, Kenya, during the 1988 long and short rainy seasons. The trial was established in 1983 and in all the seasons Katumani composite B maize was sown, except in the short rains of 1988 when Hybrid 511 was planted. Plots consisted of 3 cropped alleys between cassia hedges spaced at 3.6 m apart. The hedges were lopped at the beginning of every season (on-set of rains) and the prunings incorporated into the alleys one day before maize seeds were sown. The control plots had no hedges and hence no prunings were incorporated. Incorporation of prunings into the soil increased nutrient concentration in the maize leaves, grains and soil in the treatment plots compared to the controls. Maize grain yield on a per row basis was also higher in the plots that received prunings application compared to the controls. However, on an area basis, the yield increase was insufficient to compensate for the area lost to the Cassia siamea shrubs.

Keywords
Agroforestry, hedge row intercropping, cassia shrubs

 
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