Abstract
Two herbicide field experiments were conducted in 1980 at the Corozal and Isabela Agricultural Substations to evaluate Glyphosate /N-(phosphonomethyl) glycine^/ at 1.0, 2.0 and 4.0% applied either as pre-plant or preplant plus post-emergence directed spray for weed control in cassava. Both experiments were carried out on small plots (4.9 x 6.1 m) arranged in a randomized complete block design with four replications. Weed control ratings and phytotoxicity evaluations were made periodically. The edible tubers of cassava were harvested and yield data analyzed statistically. Two applications of Glyphosate (pre-plant plus post-emergence) provided better sustained weed control than a single pre-plant application at both substations. However, two applications of Glyphosate had caused greater crop injury than a single application. Consequently, when plots received two applications, they did not outyield plots with only a single one. Among the different concentration of Glyphosate tested, it is indicated that Glyphosate at 1% applied either pre-plant or post-emergence is sufficiently high enough for controlling major weeds encountered in the experimental plots. Tuber yield of cassava was not significantly increased with higher rates of Glyphosate application.
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Claims 5
Claim · model-written summary
Two glyphosate applications (pre-plant plus post-emergence) gave better sustained weed control in cassava than a single pre-plant application.
- Taxon
- cassava
Manihot esculentae1 - Treatment
- Two applications of Glyphosate (pre-plant plus post-emergence)e0
- Outcome
- weed controle0
- Direction
- better sustainede0
- Comparator
- a single pre-plant applicatione0
- Setting
- Corozal and Isabela Agricultural Substationse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two applications of Glyphosate (pre-plant plus post-emergence) provided better sustained weed control than a single pre-plant application at both substations”
e1“applied either as pre-plant or preplant plus post-emergence directed spray for weed control in cassava”
e2“Two herbicide field experiments were conducted in 1980 at the Corozal and Isabela Agricultural Substations”
Claim · model-written summary
Two glyphosate applications caused greater crop injury in cassava than a single application.
- Taxon
- cassavaManihot esculentae1
- Treatment
- two applications of Glyphosatee3
- Outcome
- crop injurye3
- Direction
- greatere3
- Comparator
- a single applicatione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“applied either as pre-plant or preplant plus post-emergence directed spray for weed control in cassava”
e3“However, two applications of Glyphosate had caused greater crop injury than a single application”
Claim · model-written summary
Two glyphosate applications did not outyield a single application in cassava.
- Taxon
- cassavaManihot esculentae1
- Treatment
- two applicationse4
- Outcome
- yielde4
- Direction
- did not outyielde4
- Comparator
- only a single onee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“applied either as pre-plant or preplant plus post-emergence directed spray for weed control in cassava”
e4“Consequently, when plots received two applications, they did not outyield plots with only a single one”
Claim · model-written summary
Glyphosate at 1% applied pre-plant or post-emergence is sufficient for controlling major weeds in cassava.
- Taxon
- cassavaManihot esculentae1
- Treatment
- Glyphosate at 1%e5
- Outcome
- controlling major weedse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“applied either as pre-plant or preplant plus post-emergence directed spray for weed control in cassava”
e5“Among the different concentration of Glyphosate tested, it is indicated that Glyphosate at 1% applied either pre-plant or post-emergence is sufficiently high enough for controlling major weeds encountered in the experimental plots”
Claim · model-written summary
Tuber yield of cassava was not significantly increased with higher glyphosate rates.
- Taxon
- cassavaManihot esculentae6
- Treatment
- higher rates of Glyphosate applicatione6
- Outcome
- Tuber yielde6
- Direction
- not significantly increasede6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Tuber yield of cassava was not significantly increased with higher rates of Glyphosate application”
The same questions in other papers
glyphosate · weed · Manihot esculenta (cassava)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
herbicide · weed · Manihot esculenta (cassava)Results agree
11 papers in the same direction as this paper
- positive
- positive
- positive
8 papers more in this group
See all 12 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.