Abstract
Abstract. Tillage and mulching effects on the environment of the seed zone and on growth of cowpea (Vigna unguiculata) seedlings in the humid tropics were studied at Ibadan, southwestern Nigeria, in the 1987 and 1988 late cropping seasons. The split‐plot design experiment had conventional tillage (ploughing and harrowing), reduced tillage (ploughing only), zero tillage and grass mulch treatments. Conventional and reduced tillage practices decreased initial bulk density and increased seedling emergence, root growth, dry matter yield and overall seedling performance. Addition of mulch increased the soil moisture in the root zone and significantly decreased maximum soil temperatures and diurnal fluctuations in temperature. This provided a more stable environment for seedling establishment and growth than the unmulched soil.
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Claims 5
Claim · model-written summary
Conventional and reduced tillage decreased initial soil bulk density in cowpea seedling beds.
- Taxon
- cowpea
Vigna unguiculatat0 - Treatment
- Conventional and reduced tillagee1
- Outcome
- initial bulk densitye1
- Direction
- decreasede1
- Setting
- Ibadan, southwestern Nigeriae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea seedling growth”
e0“studied at Ibadan, southwestern Nigeria, in the 1987 and 1988 late cropping seasons”
e1“Conventional and reduced tillage practices decreased initial bulk density and increased seedling emergence, root growth, dry matter yield and overall seedling performance”
Claim · model-written summary
Conventional and reduced tillage increased cowpea seedling emergence, root growth and dry matter yield.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- Conventional and reduced tillagee1
- Outcome
- seedling emergence, root growth, dry matter yielde1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea seedling growth”
e1“Conventional and reduced tillage practices decreased initial bulk density and increased seedling emergence, root growth, dry matter yield and overall seedling performance”
Claim · model-written summary
Conventional and reduced tillage increased overall cowpea seedling performance.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- Conventional and reduced tillagee1
- Outcome
- overall seedling performancee1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea seedling growth”
e1“Conventional and reduced tillage practices decreased initial bulk density and increased seedling emergence, root growth, dry matter yield and overall seedling performance”
Claim · model-written summary
Mulch increased soil moisture in the root zone of cowpea compared with unmulched soil.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- Addition of mulche2
- Outcome
- soil moisture in the root zonee2
- Direction
- increasede2
- Comparator
- unmulched soile4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea seedling growth”
e2“Addition of mulch increased the soil moisture in the root zone”
e4“This provided a more stable environment for seedling establishment and growth than the unmulched soil”
Claim · model-written summary
Mulch significantly decreased maximum soil temperatures and diurnal fluctuations in temperature under cowpea.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- Addition of mulche3
- Outcome
- maximum soil temperatures and diurnal fluctuations in temperaturee3
- Direction
- decreasede3
- Comparator
- unmulched soile4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea seedling growth”
e3“Addition of mulch increased the soil moisture in the root zone and significantly decreased maximum soil temperatures and diurnal fluctuations in temperature”
e4“This provided a more stable environment for seedling establishment and growth than the unmulched soil”
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See all 8 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.