Paper · 2025 · Агрохимия / Agricultural Chemistry

EFFECT OF STIMULATING BACTERIA ON THE GROWTH AND YIELD OF BREAD WHEAT AT HIGH SOIL MOISTURE

S. P. Chetverikov

8
claims
16
verbatim quotes
0
citations
3
research areas
—
Not open access

Abstract

Rhizospheric bacteria help plants overcome the stress of drought and waterlogging of the soil, and they are used in crop production to increase crop yields. However, it has not been sufficiently studied whether a single bacterial strain can be equally effective in drought and waterlogging of the soil. The reaction of wheat ( L.) to treatment with 6 strains of bacteria during waterlogging was evaluated in laboratory and field experiments (“Baymakskoye” Agricultural Research Institute of the Russian Academy of Sciences) and the data were compared with previously published results of a similar experiment in arid conditions. Excessive watering reduced the height, weight of plants, and the total amount of chlorophylls, and the use of bacteria fully or partially normalized these indicators. The most successful treatment was with strain 5(3), which was previously inferior to DA1.2 and IB-6 strains against the background of drought. In the extremely rainy field season of 2024, plant weight in the tillering phase and wheat yield increased both in plots with strain 5(3) (up to 24.6 and 20.7%) and strain DA1.2 (up to 50.7 and 20.0%) due to an increase in the number of productive stems and grain weight in each ear. Thus, during waterlogging and drought, different types of bacteria provided an advantage, but the dynamism of weather conditions in the field could smooth out the differences observed in controlled laboratory conditions.

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Claims 8

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Excessive watering reduced wheat height, plant weight and total chlorophyll.

Treatment
Excessive wateringe2
Outcome
height, weight of plants, and the total amount of chlorophyllse2
Direction
reducede2

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“The reaction of wheat”

✓ located verbatim in the source · abstract, characters 303–324 · show in text ↑
e2

“Excessive watering reduced the height, weight of plants, and the total amount of chlorophylls”

✓ located verbatim in the source · abstract, characters 629–722 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Bacteria fully or partially normalized the waterlogging-reduced height, weight and chlorophyll of wheat.

Treatment
the use of bacteriae3
Interactor
bacteriaBacteriae3symbiont
Outcome
these indicatorse3
Direction
normalizede3
Qualifier
fully or partiallye3

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“The reaction of wheat”

✓ located verbatim in the source · abstract, characters 303–324 · show in text ↑
e3

“the use of bacteria fully or partially normalized these indicators”

✓ located verbatim in the source · abstract, characters 728–794 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Strain 5(3) was the most successful treatment against waterlogging in wheat.

Treatment
strain 5(3)e4
Interactor
strain 5(3)e4symbiont
Outcome
most successful treatmente4
Direction
most successfule4

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“The reaction of wheat”

✓ located verbatim in the source · abstract, characters 303–324 · show in text ↑
e4

“The most successful treatment was with strain 5(3)”

✓ located verbatim in the source · abstract, characters 796–846 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Strain 5(3) increased wheat plant weight in the tillering phase by up to 24.6% in the 2024 field season.

Treatment
strain 5(3)e1
Interactor
strain 5(3)e1symbiont
Outcome
plant weight in the tillering phasee1
Direction
increasede1
Value
24.6e1
Setting
extremely rainy field season of 2024e2

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“plant weight in the tillering phase and wheat yield increased both in plots with strain 5(3) (up to 24.6 and 20.7%) and strain DA1.2 (up to 50.7 and 20.0%)”

✓ located verbatim in the source · abstract, characters 984–1139 · show in text ↑
e2

“In the extremely rainy field season of 2024”

✓ located verbatim in the source · abstract, characters 939–982 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Strain 5(3) increased wheat yield by up to 20.7% in the 2024 field season.

Treatment
strain 5(3)e1
Interactor
strain 5(3)e1symbiont
Outcome
wheat yielde1
Direction
increasede1
Value
20.7%e1
Setting
extremely rainy field season of 2024e2

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“plant weight in the tillering phase and wheat yield increased both in plots with strain 5(3) (up to 24.6 and 20.7%) and strain DA1.2 (up to 50.7 and 20.0%)”

✓ located verbatim in the source · abstract, characters 984–1139 · show in text ↑
e2

“In the extremely rainy field season of 2024”

✓ located verbatim in the source · abstract, characters 939–982 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Strain DA1.2 increased wheat plant weight in the tillering phase by up to 50.7% in the 2024 field season.

Treatment
strain DA1.2e1
Interactor
strain DA1.2e1symbiont
Outcome
plant weight in the tillering phasee1
Direction
increasede1
Value
50.7e1
Setting
extremely rainy field season of 2024e2

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“plant weight in the tillering phase and wheat yield increased both in plots with strain 5(3) (up to 24.6 and 20.7%) and strain DA1.2 (up to 50.7 and 20.0%)”

✓ located verbatim in the source · abstract, characters 984–1139 · show in text ↑
e2

“In the extremely rainy field season of 2024”

✓ located verbatim in the source · abstract, characters 939–982 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Strain DA1.2 increased wheat yield by up to 20.0% in the 2024 field season.

Treatment
strain DA1.2e1
Interactor
strain DA1.2e1symbiont
Outcome
wheat yielde1
Direction
increasede1
Value
20.0%e1
Setting
extremely rainy field season of 2024e2

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“plant weight in the tillering phase and wheat yield increased both in plots with strain 5(3) (up to 24.6 and 20.7%) and strain DA1.2 (up to 50.7 and 20.0%)”

✓ located verbatim in the source · abstract, characters 984–1139 · show in text ↑
e2

“In the extremely rainy field season of 2024”

✓ located verbatim in the source · abstract, characters 939–982 · show in text ↑
Mechanismauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

The wheat yield increase was attributed to more productive stems and heavier grain per ear.

Outcome
wheat yielde1
Qualifier
an increase in the number of productive stems and grain weight in each eare5

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“plant weight in the tillering phase and wheat yield increased both in plots with strain 5(3) (up to 24.6 and 20.7%) and strain DA1.2 (up to 50.7 and 20.0%)”

✓ located verbatim in the source · abstract, characters 984–1139 · show in text ↑
e5

“due to an increase in the number of productive stems and grain weight in each ear”

✓ located verbatim in the source · abstract, characters 1140–1221 · show in text ↑

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