Abstract
African Crop Science Journal, Vol. 4. No. 3, pp. 315-324, 1996 Effect of the application of dairy cattle slurry and intercropping with cowpea on the performance of maize in coastal lowland Kenya J.G. Mureithi, R. S. Tayler and W. Thorpe Code Number: CS96071 Sizes of Files: Text: 28K Graphics: Line drawings (gif) - 6K Tables (jpg) - 370K ABSTRACT Dairy cattle slurry is a potential source of soil nutrients for smallholder dairy farmers. A study was conducted in coastal lowland Kenya to assess how best to utilise dairy cattle slurry for maize production on the infertile coastal sandy soils. The effects of rate (55 or 110 t ha^-1), time (at planting or at tasselling) and method of slurry application (burying or spreading on the surface), and of intercropping maize with cowpea were evaluated. The study was initiated in 1989 and three years results are presented. The higher rate of slurry application generally increased maize grain and stover DM yields and increased soil OM, P, K and Ca. Yields were greater with application at planting than at tasselling and with burial rather than spreading. Planting cowpea at the same time as maize depressed maize grain yield but this effect was reversed when cowpea was planted four weeks after the maize. The LER was greater than unity in four seasons out of five indicating better land utilisation under intercropping. Key Words: Maize production, Coastal lowland tropics, cowpea intercropping, soil nutrients RESUME Les produits de l'elevage du betail est une ressource potentielle des elements nutritifs du sol pour les elevages de petites fermes. Une etude a ete menee dans la plaine du Kenya pour evaluer la meilleure possibilite d'utiliser les produits l'elevage du betail pour la production du mais dans la cote non fertile dans les sols sabloneux. Les effets du taux (55 ou 110 t par hectare), la periode (au cours de la peride de panter) et la methode d'application (enfoncer dans le sol ou epandre sur la surface du sol), et la culture du mais associee au niebe etait evaluee. L'etude a ete initiee en 1989 et les resultats ont eu lieu cours de trois annees. Le taux le plus eleve de l'application a generalement augmente le nombre de graines du mais et le rendement DM et l'augmentation en sol OM, P, K et Ca. Les rendements etaient superieurs a cause de l'application de la methode pendant la periode de planter et avec le fait d'enforcer ou enterrer les graines au lieu de le repandre sur la surface du sol. Le fait d'associer la culture du niebe avec celle du mais a deprimee le rendement des graines du mais mais cet effet etait inverse pendant la periode ou le niebe etait plante quatre semaines plustard apres le mais. Le "LER" etait superieur que l'unite pendant quatre saisons sur cinq indiquant la meilleure utilisation de la terre sous le fait de planter deux plantes dans un meme champ (intercropping). Mots Cles: Production du mais, les tropiques des cotes de la plaine, culture mixte du niebe, elements nutritifs du sol Copyright 1996 The African Crop Science Society
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Claims 11
Claim · model-written summary
Higher slurry rate increased maize grain.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e0“The higher rate of slurry application generally increased maize grain and stover DM yields and increased soil OM, P, K and Ca.”
Claim · model-written summary
Higher slurry rate increased stover DM yields.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e0“The higher rate of slurry application generally increased maize grain and stover DM yields and increased soil OM, P, K and Ca.”
Claim · model-written summary
Higher slurry rate increased soil OM.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e0“The higher rate of slurry application generally increased maize grain and stover DM yields and increased soil OM, P, K and Ca.”
Claim · model-written summary
Higher slurry rate increased P.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e0“The higher rate of slurry application generally increased maize grain and stover DM yields and increased soil OM, P, K and Ca.”
Claim · model-written summary
Higher slurry rate increased K.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e0“The higher rate of slurry application generally increased maize grain and stover DM yields and increased soil OM, P, K and Ca.”
Claim · model-written summary
Higher slurry rate increased Ca.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e0“The higher rate of slurry application generally increased maize grain and stover DM yields and increased soil OM, P, K and Ca.”
Claim · model-written summary
Applying slurry at planting produced greater yields than at tasselling.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e1“Yields were greater with application at planting than at tasselling and with burial rather than spreading.”
Claim · model-written summary
Burying slurry produced greater yields than spreading it.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e1“Yields were greater with application at planting than at tasselling and with burial rather than spreading.”
Claim · model-written summary
Planting cowpea with maize depressed maize grain yield.
- Treatment
- Planting cowpea at the same time as maizee2
- Interactor
- cowpea
Vigna unguiculatae2other - Outcome
- maize grain yielde2
- Direction
- depressede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e2“Planting cowpea at the same time as maize depressed maize grain yield but this effect was reversed when cowpea was planted four weeks after the maize.”
Claim · model-written summary
Planting cowpea four weeks after maize reversed the grain yield depression.
- Treatment
- cowpea was planted four weeks after the maizee2
- Interactor
- cowpeaVigna unguiculatae2other
- Outcome
- maize grain yielde2
- Direction
- reversede2
- Comparator
- Planting cowpea at the same time as maizee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e2“Planting cowpea at the same time as maize depressed maize grain yield but this effect was reversed when cowpea was planted four weeks after the maize.”
Claim · model-written summary
Intercropping gave land equivalent ratios above one in four of five seasons.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e3“The LER was greater than unity in four seasons out of five indicating better land utilisation under intercropping.”
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