Abstract
Relevance . The slow development of the crop at the beginning of the growing season (from sowing to the 5-leaf phase) makes it uncompetitive to weed species. Weeds, adapted to cool spring temperatures, and forming a powerful underground and above-ground mass, suppress corn crops. During the growing season, weeds compete with corn plants for light, soil moisture and nutrients. In the absence of protective measures, grain yield losses can be up to 70%. Methods . The results of two-year field tests of post-emergence herbicides used to reduce the harmfulness of weeds and increase the yield of corn cultivated for grain in the conditions of the Ryazan region are presented. In the scheme of the experiment, herbicides were studied: Cordus Plus, VDG — 0.2 l/ha; MeisTer Power, MD — 1.5 l/ha; Elumis, MD — 1.6 l/ha. The research was conducted in 2020 and 2021 at the experimental field of the Institute. The soil of the site is dark gray forest heavy loamy, the humus content is 3.8%. The predecessor is winter wheat. The corn variety is NK Falcon with FAO 190. Results . It was found that the studied herbicides effectively reduced the contamination of crops from 89 to 94% in 2020 and from 85 to 91% in 2021. The analysis of the elements of the structure of corn cobs showed that the number of grains and the mass of 1000 grains in the cob influenced the formation of yield. The studied herbicides contributed to an increase in the number of grains in the cob in 2020 by 148–157 pcs., in 2021 — by 85–95 pcs., as well as the mass of 1000 grains by 96–139 g and 75–93 g, respectively. An additional crop of corn grain was obtained on the variants: in 2020 — 55–60.0%, in 2021 — 70.5–78.3%.
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Claims 9
Claim · model-written summary
The tested herbicides reduced weed contamination by 89–94% in 2020.
- Taxon
- corn
Zea mays subsp. mayst0 - Treatment
- herbicidese0
- Interactor
- weedse2weed
- Outcome
- contamination of cropse0
- Direction
- reducede0
- Value
- 89 to 94%e0
- Setting
- Ryazan regiont0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“herbicides effectively reduced the contamination of crops from 89 to 94% in 2020”
e2“harmfulness of weeds and increase the yield”
t0“herbicides in the protection of corn crops for grain in the Ryazan region”
Claim · model-written summary
The tested herbicides reduced weed contamination by 85–91% in 2021.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- herbicidest0
- Interactor
- weedse2weed
- Outcome
- contamination of cropse1
- Direction
- reducede1
- Value
- 85 to 91%e0
- Setting
- Ryazan regiont0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“from 85 to 91% in 2021”
e1“herbicides effectively reduced the contamination of crops”
e2“harmfulness of weeds and increase the yield”
t0“herbicides in the protection of corn crops for grain in the Ryazan region”
Claim · model-written summary
Cob grain number and thousand grain mass contributed to yield formation.
- Taxon
- cornZea mays subsp. mayst0
- Organ / stage
- cobe0
- Outcome
- formation of yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the number of grains and the mass of 1000 grains in the cob influenced the formation of yield.”
t0“corn crops for grain”
Claim · model-written summary
Herbicides increased grains per cob by 148–157 in 2020.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- herbicidese0
- Outcome
- number of grains in the cobe0
- Direction
- increasee0
- Value
- 148–157 pcs.e0
- Setting
- Ryazan regiont0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The studied herbicides contributed to an increase in the number of grains in the cob in 2020 by 148–157 pcs.”
t0“corn crops for grain in the Ryazan region”
Claim · model-written summary
Herbicides increased grains per cob by 85–95 in 2021.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- herbicidest0
- Outcome
- number of grains in the cobe1
- Direction
- increasee1
- Value
- 85–95 pcs.e0
- Setting
- Ryazan regiont0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in 2021 — by 85–95 pcs.”
e1“herbicides contributed to an increase in the number of grains in the cob”
t0“herbicides in the protection of corn crops for grain in the Ryazan region”
Claim · model-written summary
Herbicides increased thousand grain mass by 96–139 g in 2020.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- herbicidest0
- Outcome
- mass of 1000 grainse0
- Direction
- increasee1
- Value
- 96–139 ge0
- Setting
- Ryazan regiont0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the mass of 1000 grains by 96–139 g and 75–93 g, respectively.”
e1“herbicides contributed to an increase”
t0“herbicides in the protection of corn crops for grain in the Ryazan region”
Claim · model-written summary
Herbicides increased thousand grain mass by 75–93 g in 2021.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- herbicidest0
- Outcome
- mass of 1000 grainse0
- Direction
- increasee1
- Value
- 75–93 ge0
- Setting
- Ryazan regiont0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the mass of 1000 grains by 96–139 g and 75–93 g, respectively.”
e1“herbicides contributed to an increase”
t0“herbicides in the protection of corn crops for grain in the Ryazan region”
Claim · model-written summary
Herbicide variants produced 55–60.0% additional corn grain in 2020.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- herbicidest0
- Outcome
- crop of corn graine0
- Direction
- additionale0
- Value
- 55–60.0%e0
- Setting
- Ryazan regiont0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An additional crop of corn grain was obtained on the variants: in 2020 — 55–60.0%”
t0“herbicides in the protection of corn crops for grain in the Ryazan region”
Claim · model-written summary
Herbicide variants produced 70.5–78.3% additional corn grain in 2021.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- herbicidest0
- Outcome
- crop of corn graine1
- Direction
- additionale1
- Value
- 70.5–78.3%e0
- Setting
- Ryazan regiont0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in 2021 — 70.5–78.3%”
e1“An additional crop of corn grain was obtained on the variants”
t0“herbicides in the protection of corn crops for grain in the Ryazan region”
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