Abstract
Abstract. The chlorophyll content is the most important factor that determines the intensity of photosynthesis and the overall biological productivity of plants. Therefore, the search for mechanisms that allow you to manage the production process is an important task, the solution of which will allow you to improve the technological methods of growing crops to obtain high yields. The purpose of the study is to determine the influence of various elements of cultivation technology on the chlorophyll content in plants and the yield of winter wheat. Methods. The objects of research were winter wheat crops of various varieties. The chlorophyll content was determined by the method of Ya. I. Milaeva and N. P. Primak. Crop accounting was performed using the combine method. Results. The relative chlorophyll content in winter wheat plants: lea predecessor on average 9,4 % higher than for cereals; the use of mineral fertilizers in a few increased this figure by 38,0 %, wheat ‒ 14,0 %; in the later sowing time the amount of green pigments in plants on average more than early and optimum of 10,5 and 4,0 %, respectively; in more thickened crops, the chlorophyll content in plants is lower than in sparse ones (by 13,0 %). The absolute chlorophyll content (g/m2) in winter wheat plants: in a few in an average of 45,0 % higher than for cereals; the use of mineral fertilizers in a few increased this figure at 73,4 %, for winter wheat ‒ 76,8 %; number of green pigments in plants at the optimum sowing time is on average higher than in the early (29,6 %) and late (15,2 %); at the optimal seeding rate accumulates more chlorophyll than the minimum (by 33,4 %) and the maximum (24,2 %). On average, for all cultivation technologies, the variety Stat' contains the largest amount of chlorophyll in plants, and Zustrich – the smallest. The yield of winter wheat for the lea precursor was 4,9 t/ha, for winter wheat – 3,3 t/ha. Use of mineral fertilizers on couple increased this indicator on average by 44,1 %, and on the cereal predecessor ‒ by 55,3 %. At the optimal time of sowing, the highest yield was formed, and on average it was 5,1 t/ha for varieties. seeding Rates did not have provable differences on the yield of winter wheat. The highest yield was obtained in the Rate variety on the predecessor of pairs on a fertilized background – 7,5 t/ha. Scientific novelty. The features of the influence of various precursors, the level of mineral nutrition, timing and seeding rates on the content of chlorophyll in plants and the yield of winter wheat crops of new varieties of selection of the North Caucasian FSAC were revealed. The correlation between the relative and absolute content of chlorophyll in winter wheat plants and its yield for these varieties in the zone of unstable moisture in the Stavropol territory was determined.
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 20
Claim · model-written summary
Relative chlorophyll was 9.4% higher after the lea predecessor than cereals.
- Taxon
- winter wheat
Triticum aestivumt0 - Treatment
- lea predecessore0
- Outcome
- 9,4 %e0
- Direction
- highere0
- Value
- 9,4 %e0
- Comparator
- cerealse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lea predecessor on average 9,4 % higher than for cereals”
t0“winter wheat”
Claim · model-written summary
Mineral fertilizers increased relative chlorophyll in the lea predecessor by 38.0%.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- mineral fertilizerse0
- Outcome
- chlorophyll contentt0
- Direction
- increasede0
- Value
- 38,0 %e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the use of mineral fertilizers in a few increased this figure by 38,0 %”
t0“chlorophyll content in winter wheat plants”
Claim · model-written summary
Mineral fertilizers increased relative chlorophyll in wheat by 14.0%.
- Taxon
- winter wheatTriticum aestivumt0
- Outcome
- chlorophyll contentt0
- Direction
- increaseinferrede0
- Value
- 14,0 %e0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat ‒ 14,0 %”
t0“chlorophyll content in winter wheat plants”
Claim · model-written summary
Late sowing raised green pigments 10.5% versus early sowing.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- later sowing timee0
- Outcome
- amount of green pigmentse0
- Direction
- moree0
- Value
- 10,5e0
- Comparator
- earlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the later sowing time the amount of green pigments in plants on average more than early and optimum of 10,5 and 4,0 %, respectively”
t0“winter wheat”
Claim · model-written summary
Late sowing raised green pigments 4.0% versus optimum sowing.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- later sowing timee0
- Outcome
- amount of green pigmentse0
- Direction
- moree0
- Value
- 4,0 %e0
- Comparator
- optimume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the later sowing time the amount of green pigments in plants on average more than early and optimum of 10,5 and 4,0 %, respectively”
t0“winter wheat”
Claim · model-written summary
Thickened crops had 13.0% lower chlorophyll than sparse crops.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- thickened cropse0
- Outcome
- chlorophyll contente0
- Direction
- lowere0
- Value
- 13,0 %e0
- Comparator
- sparse onese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in more thickened crops, the chlorophyll content in plants is lower than in sparse ones (by 13,0 %)”
t0“winter wheat”
Claim · model-written summary
Absolute chlorophyll was 45.0% higher after the lea predecessor than cereals.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- a fewe0
- Outcome
- chlorophyll contentt0
- Direction
- highere0
- Value
- 45,0 %e0
- Comparator
- cerealse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in a few in an average of 45,0 % higher than for cereals”
t0“chlorophyll content in winter wheat plants”
Claim · model-written summary
Mineral fertilizers increased absolute chlorophyll 73.4% for the lea predecessor.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- mineral fertilizerse0
- Outcome
- chlorophyll contentt0
- Direction
- increasede0
- Value
- 73,4 %e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the use of mineral fertilizers in a few increased this figure at 73,4 %”
t0“chlorophyll content in winter wheat plants”
Claim · model-written summary
Mineral fertilizers increased absolute chlorophyll 76.8% for winter wheat.
- Taxon
- winter wheatTriticum aestivumt0
- Outcome
- chlorophyll contentt0
- Direction
- increaseinferrede0
- Value
- 76,8 %e0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for winter wheat ‒ 76,8 %”
t0“chlorophyll content in winter wheat plants”
Claim · model-written summary
Optimal sowing had 29.6% more green pigments than early sowing.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- optimum sowing timee0
- Outcome
- number of green pigmentse0
- Direction
- highere0
- Value
- 29,6 %e0
- Comparator
- earlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“number of green pigments in plants at the optimum sowing time is on average higher than in the early (29,6 %) and late (15,2 %)”
t0“winter wheat”
Claim · model-written summary
Optimal sowing had 15.2% more green pigments than late sowing.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- optimum sowing timee0
- Outcome
- number of green pigmentse0
- Direction
- highere0
- Value
- 15,2 %e0
- Comparator
- latee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“number of green pigments in plants at the optimum sowing time is on average higher than in the early (29,6 %) and late (15,2 %)”
t0“winter wheat”
Claim · model-written summary
Optimal seeding rate accumulated 33.4% more chlorophyll than minimum rate.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- optimal seeding ratee0
- Outcome
- chlorophylle0
- Direction
- moree0
- Value
- 33,4 %e0
- Comparator
- minimume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at the optimal seeding rate accumulates more chlorophyll than the minimum (by 33,4 %) and the maximum (24,2 %)”
t0“winter wheat”
Claim · model-written summary
Optimal seeding rate accumulated 24.2% more chlorophyll than maximum rate.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- optimal seeding ratee0
- Outcome
- chlorophylle0
- Direction
- moree0
- Value
- 24,2 %e0
- Comparator
- maximume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at the optimal seeding rate accumulates more chlorophyll than the minimum (by 33,4 %) and the maximum (24,2 %)”
t0“winter wheat”
Claim · model-written summary
Stat had the highest chlorophyll and Zustrich the lowest across technologies.
- Taxon
- winter wheatTriticum aestivumt0
- Material
- Stat'e0
- Outcome
- amount of chlorophylle0
- Direction
- largeste0
- Comparator
- Zustriche0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On average, for all cultivation technologies, the variety Stat' contains the largest amount of chlorophyll in plants, and Zustrich – the smallest.”
t0“winter wheat”
Claim · model-written summary
Winter wheat after the lea precursor yielded 4.9 t/ha versus 3.3 t/ha after winter wheat.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- lea precursore0
- Outcome
- yielde0
- Direction
- higherinferrede0
- Value
- 4,9 t/hae0
- Qualifier
- 3,3 t/hae0
- Comparator
- winter wheate0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield of winter wheat for the lea precursor was 4,9 t/ha, for winter wheat – 3,3 t/ha.”
Claim · model-written summary
Mineral fertilizers raised yield by 44.1% on the lea predecessor.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- mineral fertilizerse0
- Outcome
- yielde1
- Direction
- increasede0
- Value
- 44,1 %e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Use of mineral fertilizers on couple increased this indicator on average by 44,1 %”
t0“winter wheat”
e1“The yield of winter wheat for the lea precursor was 4,9 t/ha, for winter wheat – 3,3 t/ha.”
Claim · model-written summary
Mineral fertilizers raised yield by 55.3% on the cereal predecessor.
- Taxon
- winter wheatTriticum aestivumt1
- Outcome
- yieldt0
- Direction
- increaseinferrede0
- Value
- 55,3 %e0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on the cereal predecessor ‒ by 55,3 %”
t0“yield”
t1“winter wheat”
Claim · model-written summary
Optimal sowing produced the highest yield, averaging 5.1 t/ha.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- optimal time of sowinge0
- Outcome
- yielde0
- Direction
- higheste0
- Value
- 5,1 t/hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the optimal time of sowing, the highest yield was formed, and on average it was 5,1 t/ha for varieties.”
t0“winter wheat”
Claim · model-written summary
Seeding rates did not show provable yield differences.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- seeding Ratese0
- Outcome
- yielde0
- Direction
- did not have provable differencese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seeding Rates did not have provable differences on the yield of winter wheat.”
Claim · model-written summary
Rate variety had the highest yield of 7.5 t/ha after pairs on fertilized background.
- Taxon
- winter wheatTriticum aestivumt0
- Material
- Ratee0
- Outcome
- yielde0
- Direction
- higheste0
- Value
- 7,5 t/hae0
- Qualifier
- predecessor of pairs on a fertilized backgrounde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest yield was obtained in the Rate variety on the predecessor of pairs on a fertilized background – 7,5 t/ha.”
t0“winter wheat”
The same questions in other papers
density · physiology: pigments · Triticum aestivum (wheat)Positive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
3 papers more in this group
See all 7 papers →sowing time · physiology: pigments · Triticum aestivum (wheat)Positive and negative results
4 papers in the same direction as this paper · 11 in the opposite direction
- no effect
- negative
- negative
12 papers more in this group
See all 16 papers →fertilization · physiology: pigments · Triticum aestivum (wheat)Positive and negative results
122 papers in the same direction as this paper · 8 in the opposite direction · 3 reporting no difference from an alternative
- negative
- no effect
- negative
130 papers more in this group
See all 134 papers →sowing time · yield · Triticum aestivum (wheat)Positive and negative results
265 papers in the same direction as this paper · 191 in the opposite direction · 5 reporting no difference from an alternative
- positive
- negative
- negative
458 papers more in this group
See all 462 papers →density · yield · Triticum aestivum (wheat)Positive and negative results
121 papers in the same direction as this paper · 376 in the opposite direction
- positive
- positive
- positive
494 papers more in this group
See all 498 papers →fertilization · yield · Triticum aestivum (wheat)Positive and negative results
3,114 papers in the same direction as this paper · 284 in the opposite direction · 39 reporting no difference from an alternative
- no effect
- negative
- negative
3,434 papers more in this group
See all 3,438 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.