Abstract
A comparison was made of conventional tillage and no-tillage for cowpea production on two major soil types, Anira peat and Onverwagt clay, on the coast of Guyana. Conventional tillage did not enhance the soil physical characteristics of the Anira peat. Growth and yield of cowpea on this soil type were therefore not significantly affected by tillage; lower average yields on no-tilled plots were thought to be caused largely by poor weed control. In contrast, the physical properties of the clay soil were significantly enhanced by tillage. There were no significant differences in yield of tilled and untitled plots, but the lower average yield on untilled plots appeared to be caused by poorer soil physical conditions. No-tillage on the Anira peat rather than on the Onverwagt clay, with adequate weed control, is therefore preferred at the present time for cowpea production on the coast of Guyana. Further research is required to develop a suitable management system for clay soils.
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Claims 8
Claim · model-written summary
Conventional tillage did not improve physical characteristics of Anira peat.
- Taxon
- cowpea
Vigna unguiculatat0 - Treatment
- Conventional tillagee0
- Outcome
- soil physical characteristicse0
- Direction
- did not enhancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Conventional tillage did not enhance the soil physical characteristics of the Anira peat.”
t0“cowpea (Vigna unguiculata (L.) Walp.)”
Claim · model-written summary
Cowpea growth and yield on Anira peat were not significantly affected by tillage.
- Taxon
- cowpeaVigna unguiculatae0
- Treatment
- tillagee0
- Outcome
- Growth and yielde0
- Direction
- not significantly affectede0
- Setting
- Anira peate1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth and yield of cowpea on this soil type were therefore not significantly affected by tillage”
e1“Anira peat and Onverwagt clay”
t0“cowpea (Vigna unguiculata (L.) Walp.)”
Claim · model-written summary
Poor weed control was proposed as the principal reason for lower average yields without tillage on Anira peat.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- no-tilled plotse0
- Interactor
- weede0weed
- Outcome
- lower average yieldse0
- Qualifier
- poor weed controle0
- Setting
- Anira peate1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lower average yields on no-tilled plots were thought to be caused largely by poor weed control”
e1“Anira peat and Onverwagt clay”
t0“cowpea (Vigna unguiculata (L.) Walp.)”
Claim · model-written summary
Tillage significantly improved physical properties of clay soil.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- tillagee0
- Outcome
- physical properties of the clay soile0
- Direction
- enhancede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the physical properties of the clay soil were significantly enhanced by tillage”
t0“cowpea (Vigna unguiculata (L.) Walp.)”
Claim · model-written summary
Cowpea yield did not differ significantly between tilled and untilled clay plots.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- tillede0
- Outcome
- yielde0
- Direction
- no significant differencese0
- Comparator
- untitled plotse0
- Setting
- Onverwagt claye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were no significant differences in yield of tilled and untitled plots”
e1“Anira peat and Onverwagt clay”
t0“cowpea (Vigna unguiculata (L.) Walp.)”
Claim · model-written summary
Poorer soil physical conditions appeared to explain the lower mean yield on untilled clay plots.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- untilled plotse0
- Outcome
- lower average yielde0
- Qualifier
- poorer soil physical conditionse0
- Setting
- Onverwagt claye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the lower average yield on untilled plots appeared to be caused by poorer soil physical conditions”
e1“Anira peat and Onverwagt clay”
t0“cowpea (Vigna unguiculata (L.) Walp.)”
Claim · model-written summary
No-tillage on Anira peat with adequate weed control is preferred for cowpea production on the Guyana coast.
- Taxon
- cowpeaVigna unguiculatae0
- Outcome
- No-tillage on the Anira peate0
- Qualifier
- with adequate weed controle0
- Comparator
- Onverwagt claye0
- Setting
- coast of Guyanae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No-tillage on the Anira peat rather than on the Onverwagt clay, with adequate weed control, is therefore preferred at the present time for cowpea production on the coast of Guyana”
Claim · model-written summary
Further management research was recommended for clay soils.
- Taxon
- cowpeaVigna unguiculatat0
- Outcome
- develop a suitable management system for clay soilse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Further research is required to develop a suitable management system for clay soils.”
t0“cowpea (Vigna unguiculata (L.) Walp.)”
The same questions in other papers
tillage · yield · Vigna unguiculata (cowpea)Results differ
7 papers in the same direction as this paper · 27 in the opposite direction
- positive
- positive
- positive
31 papers more in this group
See all 35 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.