Abstract
African Crop Science Journal Vol.5. No.2, pp.151-158 1997 On-farm evaluation of soybean and cassava intercropping in south-west Nigeria H. TIJANI-ENIOLA and F. K. AKINNIFESI Code Number: CS96052 Sizes of Files: Text: 18.2K Graphics: Tables (gif) - 55.2K ABSTRACT Farmer-participatory and researcher-managed trials were conducted at Ayepe, in south-west Nigeria, between July, 1991 and October, 1992, to determine the biophysical compatibility of soybean and cassava intercrop and the optimum time for introducing cassava (Manihot esculenta Crantz) in soybean-based intercropping systems. Soybean (Glycine max L. ) was planted in monoculture and also intercropped with cassava at varying stages of soybean development. Results indicated that seed yield of soybean was depressed by intercropping. Land equivalent ratio (LER) increased with growth stage of soybean prior to introduction of the cassava intercrop. Yield of soybean ranged from 327 kg ha^-1 to 642 kg ha^-1 in farmers' fields, and from 723 kg ha^-1 to 1201 kg ha^-1 in the researcher managed field. Intercropping caused slight etiolation during the early growth of cassava but this disappeared after soybean harvest. Tuberous root yield of cassava was improved by intercropping irrespective of the stage of development of soybean. Relative total yield increased with growth stage of soybean prior to introduction of cassava. Both crops were least competitive with each other when intercropped at 6 weeks after sowing soybean. Introducing cassava into soybean in a relay-intercropping system is advantageous for this agroecological zone. Key Words: Cassava, soybean, relay intercropping, yield advantage Resume Des essais en collaboration avec des fermiers et geres par des chercheurs ont ete menee entre juillet 1991 et octobre 1992 e eyepe (sud-est du Nigeria) afin de dAterminer la compatibilite biophysique du soya et du manioc pour la culture intercalaire et le temps optimal pour introduire le manioc (Manhiot esculenta Crantz) dans un systeme intercalaire e base de soya. Le soya (Glycine max L.) etait plante en monoculture ainsi qu'en culture intercalaire avec manioc e des stades variables du soya. Les resultats indiquaient que le rendement du soya est diminue par la culture intercalaire. La proportion d'equivalence de terre (LER) augmente avec le stade de developpement du soya au moment de l'introduction de la culture intercalaire. Le rendement de soya variait de 327 kg par ha jusque 642/ha sur les champs des fermiers, et de 723 jusque 1201 sur les champs geres par les chercheurs. La culture intercalaire causait un etiolement pendant la croissance initiale du manioc, mais ceci disparait apres la recolte du soya. Le rendement des racines tubereuses de manioc augmentait en culture intercalaire et ceci etait independant du stade de developpement du soya. Le rendement relatif total augmentait avec le stade de developpement du soya avant l'introduction du manioc. La concurrence entre les deux cultures atteignait son niveau le plus bas quand l'intercalation se faisait 6 semaines apres le semis de soya. L'introduction du manioc en intercalation avec la culture du soya est avantageuse dans cette zone agroecologique. Mots Cles: Manioc, soya, culture intercalaire en relais, avantage au rendement Copyright 1997 The African Crop Science Society
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Claims 9
Claim · model-written summary
Intercropping depressed soybean seed yield.
- Taxon
- soybean
Glycine maxe0 - Treatment
- intercroppinge0
- Outcome
- seed yield of soybeane0
- Direction
- depressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed yield of soybean was depressed by intercropping”
Claim · model-written summary
Land equivalent ratio increased as soybean was older when cassava was introduced.
- Taxon
- soybeanGlycine maxe0
- Treatment
- introduction of the cassava intercrope0
- Outcome
- Land equivalent ratio (LER)e0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Land equivalent ratio (LER) increased with growth stage of soybean prior to introduction of the cassava intercrop”
Claim · model-written summary
Soybean yield ranged from 327 to 642 kg per hectare in farmer fields.
- Taxon
- soybeanGlycine maxe0
- Outcome
- Yield of soybeane0
- Value
- 327 kg ha^-1 to 642 kg ha^-1e0
- Setting
- farmers' fieldse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield of soybean ranged from 327 kg ha^-1 to 642 kg ha^-1 in farmers' fields”
Claim · model-written summary
Soybean yield ranged from 723 to 1201 kg per hectare in researcher managed fields.
- Taxon
- soybeanGlycine maxt0
- Outcome
- Yield of soybeane0
- Value
- 723 kg ha^-1 to 1201 kg ha^-1e0
- Setting
- researcher managed fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield of soybean ranged from 327 kg ha^-1 to 642 kg ha^-1 in farmers' fields, and from 723 kg ha^-1 to 1201 kg ha^-1 in the researcher managed field”
t0“soybean”
Claim · model-written summary
Intercropping caused slight cassava etiolation early in growth that disappeared after soybean harvest.
- Taxon
- cassava
Manihot esculentae0 - Treatment
- Intercroppinge0
- Outcome
- etiolation during the early growth of cassavae0
- Direction
- causede0
- Qualifier
- disappeared after soybean harveste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Intercropping caused slight etiolation during the early growth of cassava but this disappeared after soybean harvest”
Claim · model-written summary
Intercropping improved cassava tuberous root yield regardless of soybean developmental stage.
- Taxon
- cassavaManihot esculentae0
- Treatment
- intercroppinge0
- Outcome
- Tuberous root yield of cassavae0
- Direction
- improvede0
- Qualifier
- irrespective of the stage of development of soybeane0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tuberous root yield of cassava was improved by intercropping irrespective of the stage of development of soybean”
Claim · model-written summary
Relative total yield increased with later soybean growth stage at cassava introduction.
- Taxon
- soybeanGlycine maxe0
- Treatment
- introduction of cassavae0
- Outcome
- Relative total yielde0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Relative total yield increased with growth stage of soybean prior to introduction of cassava”
Claim · model-written summary
The crops competed least when intercropped six weeks after soybean sowing.
- Taxon
- soybeanGlycine maxe0
- Treatment
- intercropped at 6 weeks after sowing soybeane0
- Outcome
- least competitivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both crops were least competitive with each other when intercropped at 6 weeks after sowing soybean”
Claim · model-written summary
The authors concluded cassava introduction into soybean relay intercrops is advantageous in this zone.
- Taxon
- soybeanGlycine maxe0
- Outcome
- Introducing cassava into soybean in a relay-intercropping systeme0
- Setting
- this agroecological zonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Introducing cassava into soybean in a relay-intercropping system is advantageous for this agroecological zone”
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intercropping · yield · Manihot esculenta (cassava)Results differ
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- negative
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See all 218 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.