Abstract
Abstract Cassava ( Manihot esculenta Crantz ) is commonly intercropped with cowpea [ Vigna unguiculata (L.) Walp] or peanut ( Arachis hypogaea L.) in the tropics. Little is known about how intercropping these species influences efficiency of land use and yields. Cassava, cowpea, and peanut were grown as sole crops and as intercrops on a Typic Dystropept soil at Santander de Quilichao, Colombia in 1981 and 1982. The objective of this study was to determine land use efficiency, yield, and yield components for cassava, cowpea, and peanut grown in intercropping and sole cropping systems. Cassava yields were reduced 2.3 to 4.7 Mg ha −1 when intercropped with cowpea or peanut, except in 1982 when intercropped with cowpea. Cassava yield reductions due to intercropping were associated with the production of 1.5 to 3.9 fewer storage roots per plant than were produced by sole cropped cassava. When intercropped with cassava, cowpea seed yields were reduced from 3195 to 2170 kg ha −1 in 1981, and from 2227 to 1328 kg ha −1 in 1982. Averaged across years, peanut seed yield was reduced from 2099 to 1293 kg ha −1 . Cowpea and peanut yield reductions due to intercropping were associated with the production of approximately 3.5 fewer pods per plant. Even though yields of component crops were reduced by intercropping, the cassava‐cowpea and cassava‐peanut intercropping systems resulted in 15 to 35% greater land use efficiency for the 11‐month growing season than resulted from the sole cropping systems. This is of importance in developing countries where available per capita arable land is low.
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Claims 8
Claim · model-written summary
Intercropping with cowpea or peanut reduced cassava yield by 2.3 to 4.7 Mg ha −1, with a 1982 cowpea exception.
- Taxon
- Cassava
Manihot esculentae0 - Treatment
- intercropped with cowpea or peanute0
- Outcome
- Cassava yieldse0
- Direction
- reducede0
- Value
- 2.3 to 4.7 Mg ha −1e0
- Qualifier
- except in 1982 when intercropped with cowpeae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cassava yields were reduced 2.3 to 4.7 Mg ha −1 when intercropped with cowpea or peanut, except in 1982 when intercropped with cowpea.”
Claim · model-written summary
Cassava yield reductions under intercropping were associated with 1.5 to 3.9 fewer storage roots per plant than sole cropping.
- Taxon
- CassavaManihot esculentae0
- Outcome
- storage roots per plante0
- Direction
- fewere0
- Value
- 1.5 to 3.9 fewer storage roots per plante0
- Comparator
- sole cropped cassavae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cassava yield reductions due to intercropping were associated with the production of 1.5 to 3.9 fewer storage roots per plant than were produced by sole cropped cassava.”
Claim · model-written summary
Intercropping reduced cowpea seed yield from 3195 to 2170 kg ha −1 in 1981.
- Taxon
- cowpea
Vigna unguiculatae0 - Treatment
- intercropped with cassavae0
- Outcome
- cowpea seed yieldse0
- Direction
- reducede0
- Value
- 2170 kg ha −1e0
- Qualifier
- 3195e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When intercropped with cassava, cowpea seed yields were reduced from 3195 to 2170 kg ha −1 in 1981”
Claim · model-written summary
Intercropping reduced cowpea seed yield from 2227 to 1328 kg ha −1 in 1982.
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- intercropped with cassavae1
- Outcome
- cowpea seed yieldse1
- Direction
- reducede1
- Value
- 1328 kg ha −1e0
- Qualifier
- 2227e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“from 2227 to 1328 kg ha −1 in 1982”
e1“When intercropped with cassava, cowpea seed yields were reduced”
Claim · model-written summary
Intercropping reduced peanut seed yield from 2099 to 1293 kg ha −1 across years.
- Taxon
- peanut
Arachis hypogaeae0 - Outcome
- peanut seed yielde0
- Direction
- reducede0
- Value
- 1293 kg ha −1e0
- Qualifier
- 2099e0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Averaged across years, peanut seed yield was reduced from 2099 to 1293 kg ha −1 .”
Claim · model-written summary
Intercropping yield reductions in cowpea and peanut were associated with approximately 3.5 fewer pods per plant.
- Taxon
- Cowpea and peanutArachis hypogaeaVigna unguiculatae0
- Treatment
- intercroppinge0
- Outcome
- pods per plante0
- Direction
- fewere0
- Value
- approximately 3.5 fewer pods per plante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cowpea and peanut yield reductions due to intercropping were associated with the production of approximately 3.5 fewer pods per plant.”
Claim · model-written summary
Cassava–cowpea intercropping increased land use efficiency by 15 to 35% over sole cropping.
- Taxon
- cassavaManihot esculentae0
- Treatment
- cassava‐cowpeae0
- Outcome
- land use efficiencye0
- Direction
- greatere0
- Value
- 15 to 35%e0
- Comparator
- sole cropping systemse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the cassava‐cowpea and cassava‐peanut intercropping systems resulted in 15 to 35% greater land use efficiency for the 11‐month growing season than resulted from the sole cropping systems.”
Claim · model-written summary
Cassava–peanut intercropping increased land use efficiency by 15 to 35% over sole cropping.
- Taxon
- cassavaManihot esculentae0
- Treatment
- cassava‐peanute0
- Outcome
- land use efficiencye0
- Direction
- greatere0
- Value
- 15 to 35%e0
- Comparator
- sole cropping systemse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the cassava‐cowpea and cassava‐peanut intercropping systems resulted in 15 to 35% greater land use efficiency for the 11‐month growing season than resulted from the sole cropping systems.”
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