Abstract
Cassava (Manihot esculenta Crantz) is cultivated primarily for its starchy roots which provide a staple for millions of people in the tropics. The foliage contains high levels of protein which can be harvested for human and animal feed. Twenty five cassava genotypes were arranged in a randomized complete block design with three replications to investigate their tolerance to periodic pruning with respect to effect on root yield and yield components. The cassava plants were periodically pruned starting from three months after planting and at three months intervals until root harvest at 12 months after planting. Storage root yields ranged between 8.3 – 26.2 t/ha and 28.9–85.5 t/ha for the pruned plants and the control respectively. The pruned plants produced average root yield of 14.7 t/ha compared with 51.5 t/ha from the control. Though periodic pruning resulted in significant reduction in all components measured, genetic variations were observed in the level of reduction. Observed root yield reduction ranged between 40–80%. Five genotypes; 96/1642, Afisiafi, Esambankye, Agbelifia and Bankyehemaa, recorded storage root yield reduction of less than 50% of their respective controls. Starch content and mean storage root weight were also significantly reduced by periodic pruning. The significant genetic variations in the reduction of these traits indicated different levels of tolerance which can be exploited in further studies to identify ideal cassava genotypes for dual purpose utilization for foliage and root production.
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Claims 10
Claim · model-written summary
Pruned cassava storage root yields ranged from 8.3 to 26.2 t/ha.
- Taxon
- Cassava
Manihot esculentat0 - Treatment
- pruned plantse0
- Outcome
- Storage root yieldse0
- Value
- 8.3 – 26.2 t/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Storage root yields ranged between 8.3 – 26.2 t/ha and 28.9–85.5 t/ha for the pruned plants and the control respectively.”
t0“Cassava”
Claim · model-written summary
Control cassava root yields ranged from 28.9 to 85.5 t/ha.
- Taxon
- CassavaManihot esculentat0
- Material
- controle0
- Outcome
- Storage root yieldse0
- Value
- 28.9–85.5 t/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Storage root yields ranged between 8.3 – 26.2 t/ha and 28.9–85.5 t/ha for the pruned plants and the control respectively.”
t0“Cassava”
Claim · model-written summary
Mean root yield was 14.7 t/ha in pruned cassava versus 51.5 t/ha in controls.
- Taxon
- CassavaManihot esculentat0
- Treatment
- pruned plantse0
- Outcome
- average root yielde0
- Direction
- compared withe0
- Value
- 14.7 t/hae0
- Qualifier
- 51.5 t/hae0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The pruned plants produced average root yield of 14.7 t/ha compared with 51.5 t/ha from the control.”
t0“Cassava”
Claim · model-written summary
Periodic pruning significantly reduced all measured yield components.
- Taxon
- CassavaManihot esculentat0
- Treatment
- periodic pruninge0
- Outcome
- all components measurede0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Though periodic pruning resulted in significant reduction in all components measured, genetic variations were observed in the level of reduction.”
t0“Cassava”
Claim · model-written summary
Genotypes varied in the degree of reduction under pruning.
- Taxon
- CassavaManihot esculentat0
- Outcome
- genetic variationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“genetic variations were observed in the level of reduction.”
t0“Cassava”
Claim · model-written summary
Pruning reduced root yield by 40–80%.
- Taxon
- CassavaManihot esculentat0
- Treatment
- periodic pruninge1
- Outcome
- root yielde0
- Direction
- reductione0
- Value
- 40–80%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Observed root yield reduction ranged between 40–80%.”
e1“Though periodic pruning resulted in significant reduction in all components measured, genetic variations were observed in the level of reduction.”
t0“Cassava”
Claim · model-written summary
96/1642, Afisiafi, Esambankye, Agbelifia and Bankyehemaa each lost less than 50% root yield compared with their controls.
- Taxon
- CassavaManihot esculentat0
- Material
- 96/1642, Afisiafi, Esambankye, Agbelifia and Bankyehemaae0
- Outcome
- storage root yield reductione0
- Value
- less than 50%e0
- Comparator
- their respective controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Five genotypes; 96/1642, Afisiafi, Esambankye, Agbelifia and Bankyehemaa, recorded storage root yield reduction of less than 50% of their respective controls.”
t0“Cassava”
Claim · model-written summary
Periodic pruning significantly reduced starch content.
- Taxon
- CassavaManihot esculentat0
- Treatment
- periodic pruninge0
- Outcome
- Starch contente0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Starch content and mean storage root weight were also significantly reduced by periodic pruning.”
t0“Cassava”
Claim · model-written summary
Periodic pruning significantly reduced mean storage root weight.
- Taxon
- CassavaManihot esculentat0
- Treatment
- periodic pruninge0
- Outcome
- mean storage root weighte0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Starch content and mean storage root weight were also significantly reduced by periodic pruning.”
t0“Cassava”
Claim · model-written summary
Genetic variation in pruning response indicates different tolerance levels useful for dual purpose selection.
- Taxon
- CassavaManihot esculentat0
- Outcome
- different levels of tolerancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The significant genetic variations in the reduction of these traits indicated different levels of tolerance which can be exploited in further studies to identify ideal cassava genotypes for dual purpose utilization for foliage and root production.”
t0“Cassava”
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See all 14 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.