Abstract
Many countries are now facing the problem of increase in resistant biotypes of weeds. The spread of herbicide-resistant weeds across agrophytocenoses poses a threat of decrease in the effectiveness of use of herbicides in agricultural fields. In order to develop anti-resistant compositions of herbicides for protection of maize (Zea mays L.) crops, we studied effects of interaction and efficiency of weed control in greenhouse and field experiments. We studied the possibility of combined use of 4-hydroxyphenyl pyruvate dioxygenase-inhibiting herbicide tolpyralate and inhibitor of transport of electrons in photosystem 2 of chloroplasts – terbuthylazine – and acetolactate synthase-inhibiting rimsulfuron. In greenhouse experiments on model objects, we found that interaction in the mixtures of tolpyralate with rimsulfuron was antagonistic, but the antagonism may be overcome by increasing the rate of applied rimsulfuron. At joint use of tolpyralate and terbuthylazine, a synergistic increase in phytotoxic effect was observed, caused by increase in the effectiveness of the blocking electron-transport chain and increase in intensity of formation of reactive oxygen species. According to the results of the field experiments, we drew the conclusion that the efficacy of using the mixture of tolpyralate and rimsulfuron depends on the species composition of weeds. In the presence of rimsulfuron-resistant weeds, interaction with tolpyralate becomes antagonistic even in the conditions of increased rate of application of rimsulfuron, and thus the effectiveness of the protection significantly decreases. At the same time, after applying tank mixture of tolpyralate with terbuthylazine, the synergistic character of the interaction was maintained toward a broad range of species of grass and dicotyledonous weeds, providing high efficiency of maize crop protection. The herbicide compositions that were analyzed and are presented in the article allow one to decrease the possibility of emergence of resistant biotypes of weeds, and also to effectively control the already existing resistant biotypes.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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 11
Claim · model-written summary
Tolpyralate with rimsulfuron was antagonistic in greenhouse tests.
- Treatment
- mixtures of tolpyralate with rimsulfurone1
- Outcome
- interaction in the mixtures of tolpyralate with rimsulfuron was antagonistice1
- Setting
- greenhouse experimentse1
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize (Zea mays L.) crops”
e1“In greenhouse experiments on model objects, we found that interaction in the mixtures of tolpyralate with rimsulfuron was antagonistic”
Claim · model-written summary
Increasing rimsulfuron rate could overcome greenhouse antagonism.
- Treatment
- increasing the rate of applied rimsulfurone1
- Outcome
- antagonisme1
- Direction
- overcomee1
- Comparator
- mixtures of tolpyralate with rimsulfurone2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize (Zea mays L.) crops”
e1“the antagonism may be overcome by increasing the rate of applied rimsulfuron”
e2“mixtures of tolpyralate with rimsulfuron”
Claim · model-written summary
Tolpyralate with terbuthylazine produced synergistically greater phytotoxicity.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize (Zea mays L.) crops”
e1“At joint use of tolpyralate and terbuthylazine, a synergistic increase in phytotoxic effect was observed”
Claim · model-written summary
Greater electron transport blocking and reactive oxygen species formation were offered as causes of synergy.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize (Zea mays L.) crops”
e1“caused by increase in the effectiveness of the blocking electron-transport chain and increase in intensity of formation of reactive oxygen species”
Claim · model-written summary
Field efficacy of tolpyralate plus rimsulfuron depended on weed species composition.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize (Zea mays L.) crops”
e1“the efficacy of using the mixture of tolpyralate and rimsulfuron depends on the species composition of weeds.”
Claim · model-written summary
With rimsulfuron-resistant weeds, tolpyralate interaction remained antagonistic at increased rimsulfuron rate.
- Interactor
- rimsulfuron-resistant weedse1weed
- Outcome
- interaction with tolpyralate becomes antagonistice1
- Qualifier
- increased rate of application of rimsulfurone1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize (Zea mays L.) crops”
e1“In the presence of rimsulfuron-resistant weeds, interaction with tolpyralate becomes antagonistic even in the conditions of increased rate of application of rimsulfuron”
Claim · model-written summary
With resistant weeds, maize protection efficacy significantly decreased.
- Interactor
- rimsulfuron-resistant weedse2weed
- Outcome
- effectiveness of the protectione1
- Direction
- decreasese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize (Zea mays L.) crops”
e1“the effectiveness of the protection significantly decreases”
e2“rimsulfuron-resistant weeds”
Claim · model-written summary
Tolpyralate plus terbuthylazine retained synergistic effects against many grass and dicot weeds.
- Treatment
- tank mixture of tolpyralate with terbuthylazinee1
- Interactor
- grass and dicotyledonous weedse1weed
- Outcome
- synergistic character of the interaction was maintainede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize (Zea mays L.) crops”
e1“after applying tank mixture of tolpyralate with terbuthylazine, the synergistic character of the interaction was maintained toward a broad range of species of grass and dicotyledonous weeds”
Claim · model-written summary
Tolpyralate plus terbuthylazine gave high maize crop protection efficacy.
- Treatment
- tank mixture of tolpyralate with terbuthylazinee2
- Outcome
- efficiency of maize crop protectione1
- Direction
- highe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize (Zea mays L.) crops”
e1“providing high efficiency of maize crop protection”
e2“tank mixture of tolpyralate with terbuthylazine”
Claim · model-written summary
The authors concluded these herbicide compositions may reduce emergence of resistant weed biotypes.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize (Zea mays L.) crops”
e1“The herbicide compositions that were analyzed and are presented in the article allow one to decrease the possibility of emergence of resistant biotypes of weeds”
Claim · model-written summary
The authors concluded these herbicide compositions control existing resistant weed biotypes.
- Outcome
- effectively control the already existing resistant biotypese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize (Zea mays L.) crops”
e1“effectively control the already existing resistant biotypes”
The same questions in other papers
tolpyralate · crop injury · Zea mays (maize)Positive and negative results
4 in the opposite direction
- negative
- negative
- negative
1 paper more in this group
See all 5 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.