Abstract
Abstract In experiments conducted near Ann Arbor, Mich. in 1981 and 1982, yield responses of intercrops of tomatoes ( Lycopersicon esculentum Mill.) and cucumbers ( Cucumis sativus L.) were compared to monocultures of each crop with respect to several variables affecting yields. In 1981, the effects of two levels of irrigation (irrigation and no irrigation) and three levels of artificially manipulated numbers of hornworm ( Manduca spp.) larvae were compared in intercrops and monocultural controls planted at three different cucumber densities and one tomato density. In 1982, two levels of irrigation were compared across two densities of cucumbers and two densities of tomatoes. Intercrops of tomatoes and cucumbers showed relatively greater increases in yields than monocultures when water availability was greatest and at higher levels of pest (hornworm) attack. Irrigation seemed to relax competition between crop species, and cucumbers may have compensated for tomato defoliation by hornworms.
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Claims 4
Claim · model-written summary
Intercrops of tomatoes and cucumbers showed relatively greater yield increases than monocultures when water availability was greatest.
- Taxon
- Tomatoes and Cucumbers
Cucumis sativus
Solanum lycopersicumt0 - Treatment
- Intercropse0
- Outcome
- yieldse0
- Direction
- greater increasese0
- Qualifier
- when water availability was greateste0
- Comparator
- monoculturese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Intercrops of tomatoes and cucumbers showed relatively greater increases in yields than monocultures when water availability was greatest”
t0“Tomatoes and Cucumbers”
Claim · model-written summary
Intercrops of tomatoes and cucumbers showed relatively greater yield increases than monocultures at higher levels of hornworm attack.
- Taxon
- Tomatoes and CucumbersCucumis sativusSolanum lycopersicumt0
- Treatment
- Intercropse0
- Interactor
- hornworme0pest
- Outcome
- yieldse0
- Direction
- greater increasese0
- Qualifier
- higher levels of pest (hornworm) attacke0
- Comparator
- monoculturese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Intercrops of tomatoes and cucumbers showed relatively greater increases in yields than monocultures when water availability was greatest and at higher levels of pest (hornworm) attack”
t0“Tomatoes and Cucumbers”
Claim · model-written summary
Irrigation seemed to relax competition between the crop species in the tomato-cucumber intercrops.
- Taxon
- Tomatoes and CucumbersCucumis sativusSolanum lycopersicumt0
- Treatment
- Irrigatione0
- Outcome
- competition between crop speciese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irrigation seemed to relax competition between crop species”
t0“Tomatoes and Cucumbers”
Claim · model-written summary
Cucumbers may have compensated for tomato defoliation by hornworms.
- Taxon
- cucumbersCucumis sativuse0
- Interactor
- hornwormse0pest
- Outcome
- compensated for tomato defoliatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumbers may have compensated for tomato defoliation by hornworms”
The same questions in other papers
intercropping · yield · Cucumis sativus (cucumber)Positive and negative results
9 papers in the same direction as this paper · 3 in the opposite direction
- negative
- no effect
- negative
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See all 13 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 →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.