Paper · 2023 · Vestnik of Kazan state agrarin university

DYNAMICS OF NPK COMPLEX IN SOIL DEPENDING ON FORMS OF FERTILIZERS AND THEIR COMBINATIONS

Galina Ermolaeva; Kseniya Zayceva

12
claims
21
verbatim quotes
0
citations
2
research areas
✓
Open access

Abstract

The research was carried out to study the influence of different forms of fertilizers and their combinations on the content of mobile forms of basic nutrients in the soil and the yield of oats. The work was carried out in the forest-steppe of Volga region in 2019-2021. The objects of study: chernozem heavy loamy soil, oat plants of Rysak variety. The experimental design involved studying the following options: basic nitrogen fertilizer (factor A) - without nitrogen fertilizers, ammonium nitrate (N34.4); pre-sowing complex fertilizer (factor B) - without fertilizers, BisolbiFit, azophosphate in full dose (N15P15K15), biomodified azophosphate in full (N15P15K15m) and half (N7.5P7.5K7.5m) doses. The field experiment was carried out in 3 repetitions in a crop rotation of pure fallow - winter wheat - spring wheat - barley - oats. The most rational was the combination of N15P15K15m with the addition of ammonium nitrate, which ensured the formation of an average oat yield over the years of research at the level of 2.71 t/ha. All fertilizers studied in the experiment led to an increase in the value of this indicator, which was 2.28...2.28 t/ha without nitrogen, and 2.50...2.64 t/ha with nitrogen. The best nitrification ability against the background without nitrogen was noted in the variant with biomodified azofoska (N15P15K15m), in which the content of nitrate nitrogen in the soil was 41.0% higher than in the variant without fertilizers. When using BisolbiFit, the value of this indicator increased by 21.4%, in variants with N15P15K15 and N7,5P7,5K7,5m - by 16.0...16.7%. Biomodified azofoska contributed to improving the supply of soil under oats with mobile phosphorus and potassium by 4.3...4.9 and 4.0...5.6%, respectively, compared to other options. When ammonium nitrate was applied at a dose of N34.4, the content of nitrate nitrogen, compared with the background where nitrogen fertilizers were not used, increased on average by 5.1% over the background, mobile phosphorus and potassium - by 1.7% and 12.6 , respectively %.

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Claims 12

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The combination of N15P15K15m with ammonium nitrate was the most rational option and gave an average oat yield of 2.71 t/ha.

Treatment
combination of N15P15K15m with the addition of ammonium nitratee1
Outcome
average oat yielde1
Direction
higherinferrede1
Value
2.71 t/hae1

Not reportedComparator

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

Avena sativa
Avena sativa · TaxonSendelbach ( talk ) · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“The most rational was the combination of N15P15K15m with the addition of ammonium nitrate, which ensured the formation of an average oat yield over the years of research at the level of 2.71 t/ha”

✓ located verbatim in the source · abstract, characters 837–1032 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

All fertilizers increased average oat yield; without nitrogen the yield was 2.28...2.28 t/ha.

Treatment
All fertilizers studied in the experimente2
Outcome
yielde0
Direction
increasee2
Value
2.28...2.28 t/hae2
Qualifier
without nitrogene2

Not reportedComparator

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

Avena sativa
Avena sativa · TaxonSendelbach ( talk ) · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the yield of oats”

✓ located verbatim in the source · abstract, characters 175–192 · show in text ↑
e2

“All fertilizers studied in the experiment led to an increase in the value of this indicator, which was 2.28...2.28 t/ha without nitrogen, and 2.50...2.64 t/ha with nitrogen”

✓ located verbatim in the source · abstract, characters 1034–1206 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

All fertilizers increased average oat yield; with nitrogen the yield was 2.50...2.64 t/ha.

Treatment
All fertilizers studied in the experimente2
Outcome
yielde0
Direction
increasee2
Value
2.50...2.64 t/hae2
Qualifier
with nitrogene2

Not reportedComparator

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

Avena sativa
Avena sativa · TaxonSendelbach ( talk ) · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the yield of oats”

✓ located verbatim in the source · abstract, characters 175–192 · show in text ↑
e2

“All fertilizers studied in the experiment led to an increase in the value of this indicator, which was 2.28...2.28 t/ha without nitrogen, and 2.50...2.64 t/ha with nitrogen”

✓ located verbatim in the source · abstract, characters 1034–1206 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Biomodified azofoska (N15P15K15m) raised soil nitrate nitrogen content by 41.0% relative to the variant without fertilizers, against the background without nitrogen.

Treatment
biomodified azofoska (N15P15K15m)e3
Outcome
content of nitrate nitrogen in the soile3
Direction
highere3
Value
41.0%e3
Qualifier
against the background without nitrogene3
Comparator
the variant without fertilizerse3

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

Avena sativa
Avena sativa · TaxonSendelbach ( talk ) · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the yield of oats”

✓ located verbatim in the source · abstract, characters 175–192 · show in text ↑
e3

“The best nitrification ability against the background without nitrogen was noted in the variant with biomodified azofoska (N15P15K15m), in which the content of nitrate nitrogen in the soil was 41.0% higher than in the variant without fertilizers”

✓ located verbatim in the source · abstract, characters 1208–1453 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

BisolbiFit increased the indicator value by 21.4% in the oat soil experiment.

Treatment
BisolbiFite4
Outcome
value of this indicatore4
Direction
increasede4
Value
21.4%e4

Not reportedComparator

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

Avena sativa
Avena sativa · TaxonSendelbach ( talk ) · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the yield of oats”

✓ located verbatim in the source · abstract, characters 175–192 · show in text ↑
e4

“When using BisolbiFit, the value of this indicator increased by 21.4%, in variants with N15P15K15 and N7,5P7,5K7,5m - by 16.0...16.7%”

✓ located verbatim in the source · abstract, characters 1455–1588 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Variants with N15P15K15 increased the indicator value by 16.0...16.7%.

Treatment
N15P15K15e4
Outcome
value of this indicatore4
Direction
increasede4
Value
16.0...16.7%e4

Not reportedComparator

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

Avena sativa
Avena sativa · TaxonSendelbach ( talk ) · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the yield of oats”

✓ located verbatim in the source · abstract, characters 175–192 · show in text ↑
e4

“When using BisolbiFit, the value of this indicator increased by 21.4%, in variants with N15P15K15 and N7,5P7,5K7,5m - by 16.0...16.7%”

✓ located verbatim in the source · abstract, characters 1455–1588 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Variants with N7,5P7,5K7,5m increased the indicator value by 16.0...16.7%.

Treatment
N7,5P7,5K7,5me4
Outcome
value of this indicatore4
Direction
increasede4
Value
16.0...16.7%e4

Not reportedComparator

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

Avena sativa
Avena sativa · TaxonSendelbach ( talk ) · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the yield of oats”

✓ located verbatim in the source · abstract, characters 175–192 · show in text ↑
e4

“When using BisolbiFit, the value of this indicator increased by 21.4%, in variants with N15P15K15 and N7,5P7,5K7,5m - by 16.0...16.7%”

✓ located verbatim in the source · abstract, characters 1455–1588 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Biomodified azofoska improved the supply of soil under oats with mobile phosphorus by 4.3...4.9 compared with other options.

Treatment
Biomodified azofoskae5
Outcome
mobile phosphoruse5
Direction
improvinge5
Value
4.3...4.9e5
Comparator
other optionse5

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

Avena sativa
Avena sativa · TaxonSendelbach ( talk ) · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e5

“Biomodified azofoska contributed to improving the supply of soil under oats with mobile phosphorus and potassium by 4.3...4.9 and 4.0...5.6%, respectively, compared to other options”

✓ located verbatim in the source · abstract, characters 1590–1771 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Biomodified azofoska improved the supply of soil under oats with potassium by 4.0...5.6% compared with other options.

Treatment
Biomodified azofoskae5
Outcome
potassiume5
Direction
improvinge5
Value
4.0...5.6%e5
Comparator
other optionse5

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

Avena sativa
Avena sativa · TaxonSendelbach ( talk ) · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e5

“Biomodified azofoska contributed to improving the supply of soil under oats with mobile phosphorus and potassium by 4.3...4.9 and 4.0...5.6%, respectively, compared to other options”

✓ located verbatim in the source · abstract, characters 1590–1771 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Ammonium nitrate applied at N34.4 increased soil nitrate nitrogen content by 5.1% over the background without nitrogen fertilizers.

Treatment
ammonium nitrate was applied at a dose of N34.4e6
Outcome
content of nitrate nitrogene6
Direction
increasede6
Value
5.1%e6
Comparator
the background where nitrogen fertilizers were not usede6

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

Avena sativa
Avena sativa · TaxonSendelbach ( talk ) · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the yield of oats”

✓ located verbatim in the source · abstract, characters 175–192 · show in text ↑
e6

“When ammonium nitrate was applied at a dose of N34.4, the content of nitrate nitrogen, compared with the background where nitrogen fertilizers were not used, increased on average by 5.1% over the background, mobile phosphorus and potassium - by 1.7% and 12.6 , respectively %”

✓ located verbatim in the source · abstract, characters 1773–2048 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Ammonium nitrate at N34.4 increased soil mobile phosphorus by 1.7% over the background without nitrogen fertilizers.

Treatment
ammonium nitrate was applied at a dose of N34.4e6
Outcome
mobile phosphoruse6
Direction
increasede6
Value
1.7%e6
Comparator
the background where nitrogen fertilizers were not usede6

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

Avena sativa
Avena sativa · TaxonSendelbach ( talk ) · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the yield of oats”

✓ located verbatim in the source · abstract, characters 175–192 · show in text ↑
e6

“When ammonium nitrate was applied at a dose of N34.4, the content of nitrate nitrogen, compared with the background where nitrogen fertilizers were not used, increased on average by 5.1% over the background, mobile phosphorus and potassium - by 1.7% and 12.6 , respectively %”

✓ located verbatim in the source · abstract, characters 1773–2048 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Ammonium nitrate at N34.4 increased soil potassium by 12.6% over the background without nitrogen fertilizers.

Treatment
ammonium nitrate was applied at a dose of N34.4e6
Outcome
potassiume6
Direction
increasede6
Value
12.6e6
Comparator
the background where nitrogen fertilizers were not usede6

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

Avena sativa
Avena sativa · TaxonSendelbach ( talk ) · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the yield of oats”

✓ located verbatim in the source · abstract, characters 175–192 · show in text ↑
e6

“When ammonium nitrate was applied at a dose of N34.4, the content of nitrate nitrogen, compared with the background where nitrogen fertilizers were not used, increased on average by 5.1% over the background, mobile phosphorus and potassium - by 1.7% and 12.6 , respectively %”

✓ located verbatim in the source · abstract, characters 1773–2048 · show in text ↑

ammonium nitrate · yield · Avena sativa (oats)Results agree

4 papers: 4 positive, 0 negative or no effect

3 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive
See all 4 papers →

fertilization · yield · Avena sativa (oats)Positive and negative results

160 papers: 143 positive, 17 negative or no effect

142 papers in the same direction as this paper · 15 in the opposite direction · 2 reporting no difference from an alternative

  1. no effect
  2. negative
  3. no effect

156 papers more in this group

See all 160 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.