Abstract

Relevance. The issues of reproduction of fertility of light gray forest soils of the forest-steppe zone and utilization of poultry industry waste as organic fertilizers are interrelated and are very relevant. Methods. The experiments studied the effect of one-time application of various doses (15, 30, 50 t/ha) of chicken manure, chicken manure compost and local organic fertilizers (sapropel and peat) on crop yields, and the aftereffect of fertilizers on the main indicators of soil fertility — amount of humus, nitrate nitrogen, phosphorus and potassium. The variants of the experiments were investigated sixfold. The Federal State Center of Agrochemical Service "Chuvashsky" was involved in laboratory analyses of soils and crop production. Mеthods of analysis of soil samples and crop production are generally accepted in agrochemical science. Results. Organic fertilizers for three years of research were introduced into the soil only once at the beginning of the experiment in doses of 15, 30 and 50 t/ha, and their effect on the yield and quality of crop production (potato tubers, spring wheat grains and peas) in 2020–2022 was positive. The agrochemical properties of the arable soil layer in the variants with the use of organic fertilizers have significantly improved. The nitrate content in the products in variants with doses of chicken manure and compost of 50 t/ha or more approached the critical level. Local fertilizers (sapropel and peat) at a dose of 30 t/ha, chicken manure and compost at a dose of 15 t/ha are good organic fertilizers with a long aftereffect.

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Claims 5

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Organic fertilizers had a positive effect on the yield and quality of potato tubers, spring wheat grains and peas in 2020–2022.

Taxon
potato tubers, spring wheat grains and pease1
Treatment
Organic fertilizerse1
Outcome
yield and quality of crop productione1
Direction
positivee1

Not reportedComparator

Verbatim

t0

“The effectiveness of the use of organic fertilizers in the link of crop rotation on light gray forest soil of the south of the Volga-Vyatka region”

✓ located verbatim in the source · title, characters 0–146 · show in text ↑
e1

“Organic fertilizers for three years of research were introduced into the soil only once at the beginning of the experiment in doses of 15, 30 and 50 t/ha, and their effect on the yield and quality of crop production (potato tubers, spring wheat grains and peas) in 2020–2022 was positive”

✓ located verbatim in the source · abstract, characters 859–1146 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Organic fertilizers significantly improved the agrochemical properties of the arable soil layer.

Treatment
organic fertilizerse2
Outcome
agrochemical properties of the arable soil layere2
Direction
significantly improvede2

Not reportedTaxonComparator

Verbatim

e2

“The agrochemical properties of the arable soil layer in the variants with the use of organic fertilizers have significantly improved”

✓ located verbatim in the source · abstract, characters 1148–1280 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Nitrate content in products with chicken manure and compost at 50 t/ha or more approached the critical level.

Taxon
potato tubers, spring wheat grains and pease1
Treatment
chicken manure and compost of 50 t/ha or moree3
Outcome
nitrate content in the productse3
Direction
approachede3
Comparator
critical levele3

Verbatim

e1

“Organic fertilizers for three years of research were introduced into the soil only once at the beginning of the experiment in doses of 15, 30 and 50 t/ha, and their effect on the yield and quality of crop production (potato tubers, spring wheat grains and peas) in 2020–2022 was positive”

✓ located verbatim in the source · abstract, characters 859–1146 · show in text ↑
e3

“The nitrate content in the products in variants with doses of chicken manure and compost of 50 t/ha or more approached the critical level”

✓ located verbatim in the source · abstract, characters 1282–1419 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Local fertilizers (sapropel and peat) at 30 t/ha are good organic fertilizers with a long aftereffect.

Taxon
potato tubers, spring wheat grains and pease1
Treatment
Local fertilizers (sapropel and peat) at a dose of 30 t/hae4
Outcome
long aftereffecte4

Verbatim

e1

“Organic fertilizers for three years of research were introduced into the soil only once at the beginning of the experiment in doses of 15, 30 and 50 t/ha, and their effect on the yield and quality of crop production (potato tubers, spring wheat grains and peas) in 2020–2022 was positive”

✓ located verbatim in the source · abstract, characters 859–1146 · show in text ↑
e4

“Local fertilizers (sapropel and peat) at a dose of 30 t/ha, chicken manure and compost at a dose of 15 t/ha are good organic fertilizers with a long aftereffect”

✓ located verbatim in the source · abstract, characters 1421–1581 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Chicken manure and compost at 15 t/ha are good organic fertilizers with a long aftereffect.

Taxon
potato tubers, spring wheat grains and pease1
Treatment
chicken manure and compost at a dose of 15 t/hae4
Outcome
long aftereffecte4

Verbatim

e1

“Organic fertilizers for three years of research were introduced into the soil only once at the beginning of the experiment in doses of 15, 30 and 50 t/ha, and their effect on the yield and quality of crop production (potato tubers, spring wheat grains and peas) in 2020–2022 was positive”

✓ located verbatim in the source · abstract, characters 859–1146 · show in text ↑
e4

“Local fertilizers (sapropel and peat) at a dose of 30 t/ha, chicken manure and compost at a dose of 15 t/ha are good organic fertilizers with a long aftereffect”

✓ located verbatim in the source · abstract, characters 1421–1581 · show in text ↑

fertilization · quality: general · Lathyrus oleraceus (pea)Positive and negative results

10 papers: 8 positive, 2 negative or no effect

7 papers in the same direction as this paper · 1 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. positive

6 papers more in this group

See all 10 papers →

fertilization · nutrient: content · Lathyrus oleraceus (pea)Positive and negative results

36 papers: 33 positive, 3 negative or no effect

2 papers in the same direction as this paper · 33 in the opposite direction

  1. positive
  2. positive
  3. positive

32 papers more in this group

See all 36 papers →

fertilization · quality: general · Solanum tuberosum (potato)Positive and negative results

41 papers: 31 positive, 10 negative or no effect

30 papers in the same direction as this paper · 8 in the opposite direction · 2 reporting no difference from an alternative

  1. no effect
  2. negative
  3. no effect

37 papers more in this group

See all 41 papers →

fertilization · nutrient: content · Solanum tuberosum (potato)Positive and negative results

123 papers: 97 positive, 26 negative or no effect

25 papers in the same direction as this paper · 97 in the opposite direction

  1. positive
  2. positive
  3. positive

119 papers more in this group

See all 123 papers →

fertilization · quality: general · Triticum aestivum (wheat)Positive and negative results

173 papers: 146 positive, 27 negative or no effect

145 papers in the same direction as this paper · 25 in the opposite direction · 2 reporting no difference from an alternative

  1. no effect
  2. negative
  3. no effect

169 papers more in this group

See all 173 papers →

fertilization · nutrient: content · Triticum aestivum (wheat)Positive and negative results

959 papers: 854 positive, 105 negative or no effect

104 papers in the same direction as this paper · 854 in the opposite direction

  1. positive
  2. positive
  3. positive

955 papers more in this group

See all 959 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.