Abstract
Summary Maintenance of soil fertility status and optimum crop yield has been a great task in Nigeria. Against this background, studies were conducted in 1994 and 1995 growing seasons at the Teaching and Research Farm, University of Ibadan, Nigeria to evaluate the productivity of cassava and soil properties and dynamics under some tillage practices. Randomized block design with four replications was used and the tillage treatments were Heaping [HP], No-Till + Herbicide [NTH], Ridging [RG] and No-Till-Slash and Burn [NSB]. Results revealed that tillage practices had no significant effect on sprouting percentage in 1994 but in 1995, HP treatment was significantly (P < 0.05) higher than others. Tillage had no marked effect on cassava height in both years while number of leaves only differed significantly (P < 0.05) 8 months after planting with HP treatment being higher than others. Stem girth showed no marked differences among treatments in both years. Similarly, in both years, cassava fresh root yield and yield components were not significantly affected by tillage practices. NSB showed significantly higher soil bulk density at planting in both years than other treatments. Generally, soil chemical properties were not markedly affected by the tillage practices. The highest cost of production was observed under NSB while RG produced the highest returns. The study suggests that successful growing of cassava under reduced tillage practices is practicable in an Alfisol in this agro-ecological zone. Resume
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Claims 11
Claim · model-written summary
Tillage practices had no significant effect on cassava sprouting percentage in 1994.
- Taxon
- cassava
Manihot esculentat0 - Treatment
- tillage practicese1
- Outcome
- sprouting percentagee1
- Direction
- no significant effecte1
- Qualifier
- in 1994e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava”
e1“tillage practices had no significant effect on sprouting percentage in 1994”
Claim · model-written summary
In 1995 the heaping treatment gave significantly higher cassava sprouting percentage (P < 0.05) than the other treatments.
- Taxon
- cassavaManihot esculentat0
- Treatment
- HP treatmente1
- Outcome
- sprouting percentagee1
- Direction
- highere1
- Qualifier
- in 1995e1
- Comparator
- otherse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava”
e1“sprouting percentage in 1994 but in 1995, HP treatment was significantly (P < 0.05) higher than others”
Claim · model-written summary
Tillage had no marked effect on cassava height in both years.
- Taxon
- cassavaManihot esculentae1
- Treatment
- Tillagee1
- Outcome
- cassava heighte1
- Direction
- no marked effecte1
- Qualifier
- in both yearse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Tillage had no marked effect on cassava height in both years”
Claim · model-written summary
Number of cassava leaves differed significantly (P < 0.05) 8 months after planting, with heaping higher than the other treatments.
- Taxon
- cassavaManihot esculentat0
- Treatment
- HP treatmente1
- Outcome
- number of leavese1
- Direction
- highere1
- Qualifier
- 8 months after plantinge1
- Comparator
- otherse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava”
e1“number of leaves only differed significantly (P < 0.05) 8 months after planting with HP treatment being higher than others”
Claim · model-written summary
Cassava stem girth showed no marked differences among tillage treatments in both years.
- Taxon
- cassavaManihot esculentat0
- Treatment
- treatmentse1
- Outcome
- Stem girthe1
- Direction
- no marked differencese1
- Qualifier
- in both yearse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava”
e1“Stem girth showed no marked differences among treatments in both years”
Claim · model-written summary
Cassava fresh root yield and yield components were not significantly affected by tillage practices.
- Taxon
- cassavaManihot esculentae1
- Treatment
- tillage practicese1
- Outcome
- fresh root yield and yield componentse1
- Direction
- not significantly affectede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“cassava fresh root yield and yield components were not significantly affected by tillage practices”
Claim · model-written summary
No-till slash and burn had significantly higher soil bulk density at planting than other treatments in both years.
- Taxon
- cassavaManihot esculentat0
- Treatment
- NSBe1
- Outcome
- soil bulk densitye1
- Direction
- highere1
- Comparator
- other treatmentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava”
e1“NSB showed significantly higher soil bulk density at planting in both years than other treatments”
Claim · model-written summary
Soil chemical properties were generally not markedly affected by the tillage practices.
- Taxon
- cassavaManihot esculentat0
- Treatment
- tillage practicese1
- Outcome
- soil chemical propertiese1
- Direction
- not markedly affectede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava”
e1“soil chemical properties were not markedly affected by the tillage practices”
Claim · model-written summary
The highest cost of production occurred under no-till slash and burn.
- Taxon
- cassavaManihot esculentat0
- Treatment
- NSBe1
- Outcome
- cost of productione1
- Direction
- higheste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava”
e1“The highest cost of production was observed under NSB”
Claim · model-written summary
Ridging produced the highest returns.
- Taxon
- cassavaManihot esculentat0
- Treatment
- RGe1
- Outcome
- returnse1
- Direction
- higheste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava”
e1“RG produced the highest returns”
Claim · model-written summary
The authors conclude that successful cassava growing under reduced tillage is practicable in an Alfisol in this agro-ecological zone.
- Taxon
- cassavaManihot esculentae1
- Treatment
- reduced tillage practicese1
- Outcome
- successful growinge1
- Qualifier
- Alfisole1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“successful growing of cassava under reduced tillage practices is practicable in an Alfisol”
The same questions in other papers
tillage · growth · Manihot esculenta (cassava)Positive and negative results
2 papers in the same direction as this paper · 6 in the opposite direction
- positive
- positive
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See all 9 papers →tillage · yield · Manihot esculenta (cassava)Positive and negative results
4 papers in the same direction as this paper · 9 in the opposite direction
- positive
- positive
- positive
10 papers more in this group
See all 14 papers →tillage · quality: postharvest · Manihot esculenta (cassava)Results agree
1 paper in the same direction as this paper
- no effect
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.