Abstract
ABSTRACT: The objective of this study was to evaluate the effect of intoxication by mesotrione herbicide on the initial development and yield of maize after seed inoculation or foliar spray application with Azospirillum brasilense and application of plant regulators. Therefore, three experiments were performed: one under greenhouse conditions and two under field conditions, in different locations. In all experiments, a randomized block design was used with a 2 x 4 factorial arrangement, representing presence (192 g ha-1) or absence of mesotrione and four treatments corresponding to the control; seed inoculation with A. brasilense; foliar spray application of A. brasilense; foliar spay application of auxin + gibberellin + cytokine (AX + GA + CK), and foliar spay applications with mesotrione were carried out at the V3 stage of the crop. The results from the greenhouse experiment, with mesotrione application, were intoxication of 7.12%, which reduced total chlorophyll content by 10.15% and carotenoid content by 75.86%, leading to reductions in gas exchange and chlorophyll a fluorescence, and increased activity of antioxidative enzymes. Under field conditions, the treatments did not reduce the effects of intoxication during the initial development of maize crop and did not increase crop yield. It was concluded that the use of A. brasilense and plant regulators did not protect maize against mesotrione intoxication in the initial development, nor did it increase yield.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 9
Claim · model-written summary
In the greenhouse experiment, mesotrione application caused 7.12% intoxication in maize.
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“initial development and yield of maize after seed inoculation”
e1“The results from the greenhouse experiment, with mesotrione application, were intoxication of 7.12%”
Claim · model-written summary
Mesotrione application reduced total chlorophyll content of maize by 10.15% in the greenhouse.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“initial development and yield of maize after seed inoculation”
e1“with mesotrione application, were intoxication of 7.12%, which reduced total chlorophyll content by 10.15% and carotenoid content by 75.86%”
Claim · model-written summary
Mesotrione application reduced carotenoid content of maize by 75.86% in the greenhouse.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“initial development and yield of maize after seed inoculation”
e1“with mesotrione application, were intoxication of 7.12%, which reduced total chlorophyll content by 10.15% and carotenoid content by 75.86%”
Claim · model-written summary
Mesotrione intoxication led to reductions in gas exchange and chlorophyll a fluorescence in maize.
- Treatment
- mesotrione applicatione1
- Outcome
- gas exchange and chlorophyll a fluorescencee2
- Direction
- reductionse2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“initial development and yield of maize after seed inoculation”
e1“with mesotrione application”
e2“leading to reductions in gas exchange and chlorophyll a fluorescence”
Claim · model-written summary
Mesotrione intoxication increased the activity of antioxidative enzymes in maize.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“initial development and yield of maize after seed inoculation”
e1“with mesotrione application”
e2“increased activity of antioxidative enzymes”
Claim · model-written summary
Azospirillum brasilense did not protect maize against mesotrione intoxication in initial development.
- Treatment
- A. brasilensee1
- Interactor
- A. brasilense
Azospirillum brasilensee1symbiont - Outcome
- mesotrione intoxication in the initial developmente1
- Direction
- did not protecte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“initial development and yield of maize after seed inoculation”
e1“the use of A. brasilense and plant regulators did not protect maize against mesotrione intoxication in the initial development, nor did it increase yield”
Claim · model-written summary
Plant regulators did not protect maize against mesotrione intoxication in initial development.
- Treatment
- plant regulatorse1
- Outcome
- mesotrione intoxication in the initial developmente1
- Direction
- did not protecte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“initial development and yield of maize after seed inoculation”
e1“the use of A. brasilense and plant regulators did not protect maize against mesotrione intoxication in the initial development, nor did it increase yield”
Claim · model-written summary
Azospirillum brasilense did not increase maize yield.
- Treatment
- A. brasilensee1
- Interactor
- A. brasilenseAzospirillum brasilensee1symbiont
- Outcome
- yielde1
- Direction
- no_changeinferrede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“initial development and yield of maize after seed inoculation”
e1“the use of A. brasilense and plant regulators did not protect maize against mesotrione intoxication in the initial development, nor did it increase yield”
Claim · model-written summary
Plant regulators did not increase maize yield.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“initial development and yield of maize after seed inoculation”
e1“the use of A. brasilense and plant regulators did not protect maize against mesotrione intoxication in the initial development, nor did it increase yield”
The same questions in other papers
Azospirillum brasilense · growth · Zea mays (maize)Results differ
7 papers in the same direction as this paper · 41 in the opposite direction
- positive
- positive
- positive
45 papers more in this group
See all 49 papers →Azospirillum brasilense · yield · Zea mays (maize)Results differ
10 papers in the same direction as this paper · 42 in the opposite direction
- positive
- positive
- positive
49 papers more in this group
See all 53 papers →mesotrione · physiology: pigments · Zea mays (maize)Positive and negative results
1 paper in the same direction as this paper · 4 in the opposite direction
- positive
- positive
- positive
2 papers more in this group
See all 6 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.