Abstract
The relevance of the study is due to the problem of choosing the optimal scale for identifying the phases of plant development in order to determine the best timing of agronomic operations for sorghum plant care. The aim of the experiment was to use a plant growth regulator with higher efficiency during the stages of crop development 21, 31, 37 (BBCH) and III, IV, VI-VII on the Kupperman scale. Field and laboratory research methods were used in the study. The experiment was conducted in the Forest-Steppe zone of Ukraine on two sorghum varieties - Sorghum bicolor and Sorghum saccharatum, which were treated with PGR. Foliar application of PGR (0.5 l/ha) at 21 and 31 stages of BBSH provides 2.8 and 4.9% better results than at III and IV stages according to the Kuperman scale (the latter is based on a comprehensive morphophysiological analysis to identify I-VII CGS). Foliar application of PGR at microstage 21 (BBCH) contributed to faster development and increased grain yield in sorghum varieties (0.19 t/ha in Odesskyi 205 and 0.12 t/ha in Lan 59) compared to application at stage III (according to Cooperman). A similar effect of PGR application at microstage 21 (BBCH) compared to stage III (Kuperman) was recorded for two sugar sorghum hybrids: in Dovista variety, the increase in biomass yield was 1.6 t/ha, dry matter - 0.7 t/ha, and sugar content in stem juice - 0.0%, while in Gulliver variety these indicators were 1.6 t/ha, 0.7 t/ha and 0.2%, respectively. Thus, it is recommended to use the BBCH scale for the application of PPP, and foliar fertilization with PPP should be carried out at 21 and 31 days. The practical value of the work lies in the selection of the scale of growth and development of sorghum crops and the timing of foliar fertilization, which is optimal for the conditions of Ukraine. The study is useful from the practical point of view of foliar nutrition of plants in production and as a theoretical assessment of the scale of plant growth and development for students and scientists.
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 13
Claim · model-written summary
PGR application at BBCH stage 21 gave 2.8% better results than Kuperman stage III.
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar application of PGR (0.5 l/ha) at 21 and 31 stages of BBSH provides 2.8 and 4.9% better results than at III and IV stages according to the Kuperman scale”
t0“Sorghum”
Claim · model-written summary
PGR application at BBCH stage 31 gave 4.9% better results than Kuperman stage IV.
- Treatment
- PGR (0.5 l/ha) at 21 and 31 stages of BBSHe0
- Outcome
- better resultse0
- Direction
- bettere0
- Value
- 4.9%e0
- Comparator
- IVe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar application of PGR (0.5 l/ha) at 21 and 31 stages of BBSH provides 2.8 and 4.9% better results than at III and IV stages according to the Kuperman scale”
t0“Sorghum”
Claim · model-written summary
PGR at BBCH stage 21 accelerated sorghum development versus Kuperman stage III.
- Treatment
- PGR at microstage 21 (BBCH)e0
- Outcome
- developmente0
- Direction
- fastere0
- Comparator
- application at stage IIIe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar application of PGR at microstage 21 (BBCH) contributed to faster development and increased grain yield in sorghum varieties (0.19 t/ha in Odesskyi 205 and 0.12 t/ha in Lan 59) compared to application at stage III (according to Cooperman).”
Claim · model-written summary
PGR at BBCH stage 21 increased grain yield by 0.19 t/ha in Odesskyi 205 versus stage III.
- Material
- Odesskyi 205e0
- Treatment
- PGR at microstage 21 (BBCH)e0
- Outcome
- grain yielde0
- Direction
- increasede0
- Value
- 0.19 t/hae0
- Comparator
- application at stage IIIe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar application of PGR at microstage 21 (BBCH) contributed to faster development and increased grain yield in sorghum varieties (0.19 t/ha in Odesskyi 205 and 0.12 t/ha in Lan 59) compared to application at stage III (according to Cooperman).”
Claim · model-written summary
PGR at BBCH stage 21 increased grain yield by 0.12 t/ha in Lan 59 versus stage III.
- Material
- Lan 59e0
- Treatment
- PGR at microstage 21 (BBCH)e0
- Outcome
- grain yielde0
- Direction
- increasede0
- Value
- 0.12 t/hae0
- Comparator
- application at stage IIIe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar application of PGR at microstage 21 (BBCH) contributed to faster development and increased grain yield in sorghum varieties (0.19 t/ha in Odesskyi 205 and 0.12 t/ha in Lan 59) compared to application at stage III (according to Cooperman).”
Claim · model-written summary
Dovista biomass yield rose by 1.6 t/ha with BBCH stage 21 PGR versus Kuperman stage III.
Verbatim
e0“A similar effect of PGR application at microstage 21 (BBCH) compared to stage III (Kuperman) was recorded for two sugar sorghum hybrids: in Dovista variety, the increase in biomass yield was 1.6 t/ha, dry matter - 0.7 t/ha, and sugar content in stem juice - 0.0%”
Claim · model-written summary
Dovista dry matter rose by 0.7 t/ha with BBCH stage 21 PGR versus stage III.
Verbatim
e0“A similar effect of PGR application at microstage 21 (BBCH) compared to stage III (Kuperman) was recorded for two sugar sorghum hybrids: in Dovista variety, the increase in biomass yield was 1.6 t/ha, dry matter - 0.7 t/ha, and sugar content in stem juice - 0.0%”
Claim · model-written summary
Dovista stem-juice sugar content changed by 0.0% with BBCH stage 21 PGR versus stage III.
- Taxon
- sugar sorghume0
- Material
- Dovistae0
- Treatment
- PGR application at microstage 21 (BBCH)e0
- Outcome
- sugar content in stem juicee0
- Value
- 0.0%e0
- Comparator
- stage III (Kuperman)e0
Not reportedDirection
Verbatim
e0“A similar effect of PGR application at microstage 21 (BBCH) compared to stage III (Kuperman) was recorded for two sugar sorghum hybrids: in Dovista variety, the increase in biomass yield was 1.6 t/ha, dry matter - 0.7 t/ha, and sugar content in stem juice - 0.0%”
Claim · model-written summary
Gulliver biomass yield rose by 1.6 t/ha with BBCH stage 21 PGR versus stage III.
- Material
- Gullivere0
- Treatment
- PGR application at microstage 21 (BBCH)e0
- Outcome
- biomass yielde0
- Direction
- increasee0
- Value
- 1.6 t/hae0
- Comparator
- stage III (Kuperman)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A similar effect of PGR application at microstage 21 (BBCH) compared to stage III (Kuperman) was recorded for two sugar sorghum hybrids: in Dovista variety, the increase in biomass yield was 1.6 t/ha, dry matter - 0.7 t/ha, and sugar content in stem juice - 0.0%, while in Gulliver variety these indicators were 1.6 t/ha, 0.7 t/ha and 0.2%, respectively.”
t0“Sorghum”
Claim · model-written summary
Gulliver dry matter rose by 0.7 t/ha with BBCH stage 21 PGR versus stage III.
- Material
- Gullivere0
- Treatment
- PGR application at microstage 21 (BBCH)e0
- Outcome
- dry mattere0
- Direction
- increasee0
- Value
- 0.7 t/hae0
- Comparator
- stage III (Kuperman)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A similar effect of PGR application at microstage 21 (BBCH) compared to stage III (Kuperman) was recorded for two sugar sorghum hybrids: in Dovista variety, the increase in biomass yield was 1.6 t/ha, dry matter - 0.7 t/ha, and sugar content in stem juice - 0.0%, while in Gulliver variety these indicators were 1.6 t/ha, 0.7 t/ha and 0.2%, respectively.”
t0“Sorghum”
Claim · model-written summary
Gulliver stem-juice sugar content rose by 0.2% with BBCH stage 21 PGR versus stage III.
- Material
- Gullivere0
- Treatment
- PGR application at microstage 21 (BBCH)e0
- Outcome
- sugar content in stem juicee0
- Direction
- increasee0
- Value
- 0.2%e0
- Comparator
- stage III (Kuperman)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A similar effect of PGR application at microstage 21 (BBCH) compared to stage III (Kuperman) was recorded for two sugar sorghum hybrids: in Dovista variety, the increase in biomass yield was 1.6 t/ha, dry matter - 0.7 t/ha, and sugar content in stem juice - 0.0%, while in Gulliver variety these indicators were 1.6 t/ha, 0.7 t/ha and 0.2%, respectively.”
t0“Sorghum”
Claim · model-written summary
The authors recommend the BBCH scale for PPP application.
- Outcome
- use the BBCH scale for the application of PPPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it is recommended to use the BBCH scale for the application of PPP”
t0“Sorghum”
Claim · model-written summary
The authors recommend foliar PPP fertilization at 21 and 31 days.
- Outcome
- foliar fertilization with PPP should be carried out at 21 and 31 dayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar fertilization with PPP should be carried out at 21 and 31 days”
t0“Sorghum”
The same questions in other papers
class · yield · SorghumPositive and negative results
3 papers in the same direction as this paper · 3 in the opposite direction
- negative
- no effect
- negative
3 papers more in this group
See all 7 papers →class · growth · SorghumResults agree
10 papers in the same direction as this paper
- positive
- positive
- positive
7 papers more in this group
See all 11 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.