Abstract
SummaryExperiments on tomato (Lycopersicon esculentum) and okra (Abelmoschus esculentus) to determine effects of intercropping with cowpea (Vigna unquiculata) at different nitrogen fertilizer rates are described. Vegetative characters of tomato were not affected by intercropping but those of okra were. Intercropping caused between 45 and 55% loss in marketable fruit yields in both vegetables. Nitrogen fertilizer treatment increased vegetative development, but application of 60 and 30 kg N ha-1 in sole and intercropping, respectively, gave maximum marketable fruit yields in each of the vegetables. Intercropping thus modified N response of the vegetables for fruit production. With cowpea, increasing nitrogen treatment also increased vegetative development; grain yield was reduced up to 55% by intercropping, but less when 30 kg N ha-1 was applied. Tomato or okra intercropped with cowpea at 30 kg N ha-1 gave the best land equivalent ratio (LER), without much reduction in the yields of component species.
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Claims 10
Claim · model-written summary
Intercropping with cowpea did not affect vegetative characters of tomato.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- intercroppinge1
- Outcome
- Vegetative characterse1
- Direction
- not affectede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Experiments on tomato (Lycopersicon esculentum) and okra (Abelmoschus esculentus) to determine effects of intercropping with cowpea (Vigna unquiculata) at different nitrogen fertilizer rates are described”
e1“Vegetative characters of tomato were not affected by intercropping but those of okra were”
Claim · model-written summary
Intercropping with cowpea affected vegetative characters of okra.
- Taxon
- okra
.jpg?width=60)
Abelmoschus esculentuse0 - Treatment
- intercroppinge1
- Outcome
- Vegetative characterse1
- Direction
- affectede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Experiments on tomato (Lycopersicon esculentum) and okra (Abelmoschus esculentus) to determine effects of intercropping with cowpea (Vigna unquiculata) at different nitrogen fertilizer rates are described”
e1“Vegetative characters of tomato were not affected by intercropping but those of okra were”
Claim · model-written summary
Intercropping with cowpea caused a 45 to 55% loss in marketable fruit yields of both vegetables.
- Taxon
- vegetablese2
- Treatment
- Intercroppinge2
- Outcome
- marketable fruit yieldse2
- Direction
- decreaseinferrede2
- Value
- between 45 and 55%e2
Not reportedComparator
Verbatim
e2“Intercropping caused between 45 and 55% loss in marketable fruit yields in both vegetables”
Claim · model-written summary
Nitrogen fertilizer increased vegetative development of the vegetables.
Not reportedComparator
Verbatim
e3“Nitrogen fertilizer treatment increased vegetative development, but application of 60 and 30 kg N ha-1 in sole and intercropping, respectively, gave maximum marketable fruit yields in each of the vegetables”
Claim · model-written summary
60 kg N ha-1 in sole cropping and 30 kg N ha-1 in intercropping gave maximum marketable fruit yields of the vegetables.
Not reportedComparator
Verbatim
e3“Nitrogen fertilizer treatment increased vegetative development, but application of 60 and 30 kg N ha-1 in sole and intercropping, respectively, gave maximum marketable fruit yields in each of the vegetables”
Claim · model-written summary
Intercropping modified the nitrogen response of the vegetables for fruit production.
- Taxon
- vegetablese4
- Treatment
- Intercroppinge4
- Outcome
- N response of the vegetables for fruit productione4
- Direction
- modifiede4
Not reportedComparator
Verbatim
e4“Intercropping thus modified N response of the vegetables for fruit production”
Claim · model-written summary
With cowpea, increasing nitrogen treatment increased vegetative development.
- Taxon
- cowpea
Vigna unguiculatae5 - Treatment
- increasing nitrogen treatmente5
- Outcome
- vegetative developmente5
- Direction
- increasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“With cowpea, increasing nitrogen treatment also increased vegetative development; grain yield was reduced up to 55% by intercropping, but less when 30 kg N ha-1 was applied”
Claim · model-written summary
Intercropping reduced cowpea grain yield by up to 55%.
- Taxon
- cowpeaVigna unguiculatae5
- Treatment
- intercroppinge5
- Outcome
- grain yielde5
- Direction
- reducede5
- Value
- up to 55%e5
- Qualifier
- but less when 30 kg N ha-1 was appliede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“With cowpea, increasing nitrogen treatment also increased vegetative development; grain yield was reduced up to 55% by intercropping, but less when 30 kg N ha-1 was applied”
Claim · model-written summary
Tomato intercropped with cowpea at 30 kg N ha-1 gave the best land equivalent ratio (LER), without much reduction in component yields.
- Taxon
- TomatoSolanum lycopersicume6
- Treatment
- intercropped with cowpea at 30 kg N ha-1e6
- Outcome
- land equivalent ratio (LER)e6
- Direction
- beste6
- Qualifier
- without much reduction in the yields of component speciese6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Tomato or okra intercropped with cowpea at 30 kg N ha-1 gave the best land equivalent ratio (LER), without much reduction in the yields of component species”
Claim · model-written summary
Okra intercropped with cowpea at 30 kg N ha-1 gave the best land equivalent ratio (LER), without much reduction in component yields.
- Taxon
- okraAbelmoschus esculentuse6
- Treatment
- intercropped with cowpea at 30 kg N ha-1e6
- Outcome
- land equivalent ratio (LER)e6
- Direction
- beste6
- Qualifier
- without much reduction in the yields of component speciese6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Tomato or okra intercropped with cowpea at 30 kg N ha-1 gave the best land equivalent ratio (LER), without much reduction in the yields of component species”
The same questions in other papers
Vigna unguiculata · yield · Abelmoschus esculentus (okra)Positive and negative results
8 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
6 papers more in this group
See all 10 papers →Vigna unguiculata · yield · Solanum lycopersicum (tomato)Results agree
2 papers in the same direction as this paper
- positive
- positive
nitrogen · yield · Abelmoschus esculentus (okra)Results differ
78 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- no effect
- negative
78 papers more in this group
See all 82 papers →intercropping · yield · Vigna unguiculata (cowpea)Results differ
39 papers in the same direction as this paper · 63 in the opposite direction
- positive
- positive
- positive
99 papers more in this group
See all 103 papers →intercropping · yield · Solanum lycopersicum (tomato)Positive and negative results
40 papers in the same direction as this paper · 4 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- negative
42 papers more in this group
See all 46 papers →intercropping · yield · Abelmoschus esculentus (okra)Positive and negative results
24 papers in the same direction as this paper · 21 in the opposite direction
- no effect
- negative
- negative
42 papers more in this group
See all 46 papers →nitrogen · yield · Solanum lycopersicum (tomato)Positive and negative results
171 papers in the same direction as this paper · 31 in the opposite direction · 7 reporting no difference from an alternative
- positive
- positive
- negative
206 papers more in this group
See all 210 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.