Abstract
A field experiment was conducted during 2015 and 2016 cropping seasons at the National Root Crop Research Institute, Umudike to evaluate the effect of vegetation residue management and weed control methods on the emergence pattern and density of mimosa under two cassava varieties of contrasting morpho-types. The sites used for the experiments were predominately infested with M. invisa Mart. The experiment was laid out in split-split plot in randomized complete block design with three replications. The main plot consisted of two residue management practices (burning and no burning). The sub-plot consisted of two cassava varieties of contrasting morphology (TME 419 and NR 8082) and the sub-sub-plot consisted of four weed control methods (hoe weeding at 4, 8 and 12 weeks after planting (WAP), S-metolachlor (1160 g/ha) + atrazine (1480 g/ha) applied pre-emergence followed by hoe weeding at 12 and 16 WAP, S-metolachlor (1160 g/ha) + atrazine (1480 g/ha) applied pre-emergence followed by trifloxysulfuron sodium (8 g/ha) applied post-emergence at 8 WAP and Weedy check). Data collected were subjected to analysis of variance and means separated using least significant difference. The results obtained indicated that the different vegetation residue management practices had no significant effect on the emergence pattern and density of M. invisa in cassava farms. However, burning of vegetation residue in-situ caused rapid germination of M. invisa before tillage operations compared to when the residues were incorporated into the soil whereas, M. invisa density was excellently controlled by all the three weed control methods used in this study up to 10 months after planting.
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Claims 3
Claim · model-written summary
Residue management practices had no significant effect on M. invisa emergence pattern and density in cassava farms.
- Taxon
- cassava
Manihot esculentae0 - Treatment
- vegetation residue management practicese0
- Interactor
- M. invisae0weed
- Outcome
- emergence pattern and density of M. invisae0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“different vegetation residue management practices had no significant effect on the emergence pattern and density of M. invisa in cassava farms”
e1“cassava varieties of contrasting morphology”
Claim · model-written summary
Burning vegetation residue caused more rapid M. invisa germination before tillage than incorporating residue into soil.
- Taxon
- cassavaManihot esculentae1
- Treatment
- burning of vegetation residue in-situe0
- Interactor
- M. invisae0weed
- Outcome
- germination of M. invisae0
- Direction
- rapide0
- Comparator
- when the residues were incorporated into the soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“burning of vegetation residue in-situ caused rapid germination of M. invisa before tillage operations compared to when the residues were incorporated into the soil”
e1“cassava farms”
Claim · model-written summary
All three weed control methods controlled M. invisa density through 10 months after planting.
- Taxon
- cassavaManihot esculentae1
- Treatment
- all the three weed control methodse0
- Interactor
- M. invisae0weed
- Outcome
- M. invisa densitye0
- Direction
- controllede0
- Qualifier
- up to 10 months after plantinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“M. invisa density was excellently controlled by all the three weed control methods used in this study up to 10 months after planting”
e1“cassava farms”
The same questions in other papers
fire · growth · Manihot esculenta (cassava)Positive and negative results
2 in the opposite direction
- positive
- positive
cultivation system · growth · Manihot esculenta (cassava)Results agree
3 papers in the same direction as this paper
- no effect
- no effect
- negative
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.