Abstract
The critical period of weed interference was investigated from 1982–1985 In two local cassava cultivars in Cameroon. Unweeded plots had more than 90% losses and were infested by birds and rodents which caused much damage to the fresh storage roots. One weeding round was not an effective treatment. Two weeding rounds at 4 and 12 weeks after planting (WAP) gave yields twice that with two weedings at 12 and 20 WAP. Three weedings at 4, 12 and 20 WAP gave the best yields: 11 t/ha and 17 t/ha for the red and white‐skinned cultivars, respectively. The highest storage root number was also recorded for the same treatment
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Claims 7
Claim · model-written summary
Unweeded cassava plots had more than 90 percent losses.
- Taxon
- cassava
Manihot esculentat0 - Treatment
- Unweedede0
- Outcome
- lossese0
- Direction
- increaseinferrede0
- Value
- more than 90%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava”
e0“Unweeded plots had more than 90% losses and were infested by birds and rodents which caused much damage to the fresh storage roots”
Claim · model-written summary
Unweeded cassava plots were infested by birds and rodents, which damaged the fresh storage roots.
- Taxon
- cassavaManihot esculentat0
- Treatment
- Unweeded plotse0
- Outcome
- damage to the fresh storage rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava”
e0“Unweeded plots had more than 90% losses and were infested by birds and rodents which caused much damage to the fresh storage roots”
Claim · model-written summary
One weeding round was not an effective treatment in cassava.
- Taxon
- cassavaManihot esculentat0
- Treatment
- One weeding rounde1
- Outcome
- effective treatmente1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava”
e1“One weeding round was not an effective treatment”
Claim · model-written summary
Two weedings at 4 and 12 WAP gave cassava yields twice those of two weedings at 12 and 20 WAP.
- Taxon
- cassavaManihot esculentat0
- Treatment
- Two weeding rounds at 4 and 12 weeks after planting (WAP)e2
- Outcome
- yieldse2
- Direction
- higherinferrede2
- Value
- twicee2
- Comparator
- two weedings at 12 and 20 WAPe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava”
e2“Two weeding rounds at 4 and 12 weeks after planting (WAP) gave yields twice that with two weedings at 12 and 20 WAP”
Claim · model-written summary
Three weedings at 4, 12 and 20 WAP gave the best cassava yield of 11 t/ha for the red-skinned cultivar.
- Taxon
- cassavaManihot esculentat0
- Material
- rede4
- Treatment
- Three weedings at 4, 12 and 20 WAPe3
- Outcome
- yieldse3
- Direction
- beste3
- Value
- 11 t/hae3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava”
e3“Three weedings at 4, 12 and 20 WAP gave the best yields: 11 t/ha and 17 t/ha”
e4“for the red and white”
Claim · model-written summary
Three weedings at 4, 12 and 20 WAP gave the best cassava yield of 17 t/ha for the white-skinned cultivar.
- Taxon
- cassavaManihot esculentat0
- Material
- whitee4
- Treatment
- Three weedings at 4, 12 and 20 WAPe3
- Outcome
- yieldse3
- Direction
- beste3
- Value
- 17 t/hae3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava”
e3“Three weedings at 4, 12 and 20 WAP gave the best yields: 11 t/ha and 17 t/ha”
e4“for the red and white”
Claim · model-written summary
Three weedings at 4, 12 and 20 WAP gave the highest cassava storage root number.
- Taxon
- cassavaManihot esculentat0
- Treatment
- Three weedings at 4, 12 and 20 WAPe3
- Outcome
- storage root numbere5
- Direction
- higheste5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava”
e3“Three weedings at 4, 12 and 20 WAP gave the best yields: 11 t/ha and 17 t/ha”
e5“The highest storage root number was also recorded for the same treatment”
The same questions in other papers
herbicide · yield · Manihot esculenta (cassava)Positive and negative results
18 papers in the same direction as this paper · 5 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- positive
- positive
21 papers more in this group
See all 25 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.