Paper · 2014 · Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis

Comparison of the effectiveness of digestate and mineral fertilisers on yields and quality of kohlrabi (Brassica oleracea, L.)

Tomáš Lošák; Andrea Zatloukalová; Monika Szostková; et al.

10
claims
21
verbatim quotes
33
citations
2
research areas
✓
Open access · cc-by-nc-nd

Abstract

In a one-year vegetation pot experiment we compared the effect of the digestate from a biogas station and mineral fertilisers on yield and quality parameters of kohlrabi, variety Seguza. Four treatments were used in the trial: 1) untreated control, 2) urea, 3) digestate, 4) urea, triple super phosphate, KCl, MgSO4. The rate of N was the same in treatments 2-4, 1.5 g N/pot. In treatment 4 the rate of P, K and Mg corresponded with the rate of these nutrients in the digestate treatment (3).The weight of single bulbs of the control unfertilised treatment were significantly the lowest (22.9%), as well as the nitrate (6.0%) and ascorbic acid content (66.2%) compared to the urea treatment (100%) and the other fertilised treatments. After the application of the digestate (treatment 3) and mineral fertilisers (treatment 4) the weight of single bulbs significantly increased by 27.9 and 29.2%, respectively, compared to the urea treatment (2). The content of ascorbic acid in the fertilised treatments did not differ (772-789 mg/kg) but it increased significantly compared to the unfertilised treatment (511 mg/kg). There were no significant differences between the two treatments fertilised with mineral fertilisers in the bulb nitrate content (678 and 641 mg NO3-/kg fresh matter, respectively). After digestate application their contents decreased significantly to 228 mg NO3-/kg fresh matter. Digestate treatment resulted in comparable or better yield and qualitative parameters compared to treatment with mineral fertilisers.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc-nd. 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 10

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Unfertilised control kohlrabi had the lowest bulb weight, 22.9% of the urea treatment.

Material
Seguzae0
Treatment
control unfertilised treatmente1
Outcome
weight of single bulbse1
Direction
loweste1
Value
22.9%e1
Comparator
urea treatmente1
Setting
vegetation pot experimente0

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

Brassica oleracea var. gongylodes
Brassica oleracea var. gongylodes · TaxonToubib at Dutch Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“In a one-year vegetation pot experiment we compared the effect of the digestate from a biogas station and mineral fertilisers on yield and quality parameters of kohlrabi, variety Seguza”

✓ located verbatim in the source · abstract, characters 0–185 · show in text ↑
e1

“The weight of single bulbs of the control unfertilised treatment were significantly the lowest (22.9%), as well as the nitrate (6.0%) and ascorbic acid content (66.2%) compared to the urea treatment (100%) and the other fertilised treatments”

✓ located verbatim in the source · abstract, characters 492–733 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Digestate application increased bulb weight by 27.9% over the urea treatment.

Material
Seguzae0
Treatment
application of the digestatee2
Outcome
weight of single bulbse2
Direction
increasede2
Value
27.9e2
Comparator
urea treatmente2
Setting
vegetation pot experimente0

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

Brassica oleracea var. gongylodes
Brassica oleracea var. gongylodes · TaxonToubib at Dutch Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“In a one-year vegetation pot experiment we compared the effect of the digestate from a biogas station and mineral fertilisers on yield and quality parameters of kohlrabi, variety Seguza”

✓ located verbatim in the source · abstract, characters 0–185 · show in text ↑
e2

“After the application of the digestate (treatment 3) and mineral fertilisers (treatment 4) the weight of single bulbs significantly increased by 27.9 and 29.2%, respectively, compared to the urea treatment (2)”

✓ located verbatim in the source · abstract, characters 735–944 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Mineral fertilisers increased bulb weight by 29.2% over the urea treatment.

Material
Seguzae0
Treatment
mineral fertiliserse2
Outcome
weight of single bulbse2
Direction
increasede2
Value
29.2e2
Comparator
urea treatmente2
Setting
vegetation pot experimente0

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

Brassica oleracea var. gongylodes
Brassica oleracea var. gongylodes · TaxonToubib at Dutch Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“In a one-year vegetation pot experiment we compared the effect of the digestate from a biogas station and mineral fertilisers on yield and quality parameters of kohlrabi, variety Seguza”

✓ located verbatim in the source · abstract, characters 0–185 · show in text ↑
e2

“After the application of the digestate (treatment 3) and mineral fertilisers (treatment 4) the weight of single bulbs significantly increased by 27.9 and 29.2%, respectively, compared to the urea treatment (2)”

✓ located verbatim in the source · abstract, characters 735–944 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Fertilised treatments had significantly higher ascorbic acid content than the unfertilised control.

Material
Seguzae0
Treatment
fertilised treatmentse3
Outcome
content of ascorbic acide3
Direction
increasede3
Qualifier
511 mg/kge3
Comparator
unfertilised treatmente3
Setting
vegetation pot experimente0

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

Brassica oleracea var. gongylodes
Brassica oleracea var. gongylodes · TaxonToubib at Dutch Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“In a one-year vegetation pot experiment we compared the effect of the digestate from a biogas station and mineral fertilisers on yield and quality parameters of kohlrabi, variety Seguza”

✓ located verbatim in the source · abstract, characters 0–185 · show in text ↑
e3

“The content of ascorbic acid in the fertilised treatments did not differ (772-789 mg/kg) but it increased significantly compared to the unfertilised treatment (511 mg/kg)”

✓ located verbatim in the source · abstract, characters 946–1116 · show in text ↑
Observationobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Ascorbic acid content did not differ among the fertilised treatments, at 772-789 mg/kg.

Treatment
fertilised treatmentse3
Outcome
content of ascorbic acide3
Direction
did not differe3
Value
772-789 mg/kge3

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

Brassica oleracea var. gongylodes
Brassica oleracea var. gongylodes · TaxonToubib at Dutch Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“In a one-year vegetation pot experiment we compared the effect of the digestate from a biogas station and mineral fertilisers on yield and quality parameters of kohlrabi, variety Seguza”

✓ located verbatim in the source · abstract, characters 0–185 · show in text ↑
e3

“The content of ascorbic acid in the fertilised treatments did not differ (772-789 mg/kg) but it increased significantly compared to the unfertilised treatment (511 mg/kg)”

✓ located verbatim in the source · abstract, characters 946–1116 · show in text ↑
Associationobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Mineral fertilisers gave no significant difference in bulb nitrate content between the two mineral treatments (678 and 641 mg NO3-/kg fresh matter).

Treatment
mineral fertiliserse4
Outcome
bulb nitrate contente4
Direction
no significant differencese4
Value
678 and 641 mg NO3-/kg fresh mattere4

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

Brassica oleracea var. gongylodes
Brassica oleracea var. gongylodes · TaxonToubib at Dutch Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“In a one-year vegetation pot experiment we compared the effect of the digestate from a biogas station and mineral fertilisers on yield and quality parameters of kohlrabi, variety Seguza”

✓ located verbatim in the source · abstract, characters 0–185 · show in text ↑
e4

“There were no significant differences between the two treatments fertilised with mineral fertilisers in the bulb nitrate content (678 and 641 mg NO3-/kg fresh matter, respectively)”

✓ located verbatim in the source · abstract, characters 1118–1298 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Digestate application decreased bulb nitrate content to 228 mg NO3-/kg fresh matter.

Treatment
digestate applicatione5
Outcome
bulb nitrate contente4
Direction
decreasede5
Value
228 mg NO3-/kg fresh mattere5
Comparator
mineral fertiliserse4

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

Brassica oleracea var. gongylodes
Brassica oleracea var. gongylodes · TaxonToubib at Dutch Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“In a one-year vegetation pot experiment we compared the effect of the digestate from a biogas station and mineral fertilisers on yield and quality parameters of kohlrabi, variety Seguza”

✓ located verbatim in the source · abstract, characters 0–185 · show in text ↑
e4

“There were no significant differences between the two treatments fertilised with mineral fertilisers in the bulb nitrate content (678 and 641 mg NO3-/kg fresh matter, respectively)”

✓ located verbatim in the source · abstract, characters 1118–1298 · show in text ↑
e5

“After digestate application their contents decreased significantly to 228 mg NO3-/kg fresh matter”

✓ located verbatim in the source · abstract, characters 1300–1397 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Unfertilised control kohlrabi had the lowest bulb nitrate content, 6.0% of the urea treatment.

Treatment
control unfertilised treatmente1
Outcome
nitratee1
Direction
loweste1
Value
6.0%e1
Comparator
urea treatmente1

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

Brassica oleracea var. gongylodes
Brassica oleracea var. gongylodes · TaxonToubib at Dutch Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“In a one-year vegetation pot experiment we compared the effect of the digestate from a biogas station and mineral fertilisers on yield and quality parameters of kohlrabi, variety Seguza”

✓ located verbatim in the source · abstract, characters 0–185 · show in text ↑
e1

“The weight of single bulbs of the control unfertilised treatment were significantly the lowest (22.9%), as well as the nitrate (6.0%) and ascorbic acid content (66.2%) compared to the urea treatment (100%) and the other fertilised treatments”

✓ located verbatim in the source · abstract, characters 492–733 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Unfertilised control kohlrabi had the lowest ascorbic acid content, 66.2% of the urea treatment.

Treatment
control unfertilised treatmente1
Outcome
ascorbic acid contente1
Direction
loweste1
Value
66.2%e1
Comparator
urea treatmente1

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

Brassica oleracea var. gongylodes
Brassica oleracea var. gongylodes · TaxonToubib at Dutch Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“In a one-year vegetation pot experiment we compared the effect of the digestate from a biogas station and mineral fertilisers on yield and quality parameters of kohlrabi, variety Seguza”

✓ located verbatim in the source · abstract, characters 0–185 · show in text ↑
e1

“The weight of single bulbs of the control unfertilised treatment were significantly the lowest (22.9%), as well as the nitrate (6.0%) and ascorbic acid content (66.2%) compared to the urea treatment (100%) and the other fertilised treatments”

✓ located verbatim in the source · abstract, characters 492–733 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Digestate gave comparable or better kohlrabi yield and quality than mineral fertilisers.

Treatment
Digestate treatmente6
Outcome
yield and qualitative parameterse6
Direction
comparable or bettere6
Comparator
treatment with mineral fertiliserse6

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

Brassica oleracea var. gongylodes
Brassica oleracea var. gongylodes · TaxonToubib at Dutch Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“In a one-year vegetation pot experiment we compared the effect of the digestate from a biogas station and mineral fertilisers on yield and quality parameters of kohlrabi, variety Seguza”

✓ located verbatim in the source · abstract, characters 0–185 · show in text ↑
e6

“Digestate treatment resulted in comparable or better yield and qualitative parameters compared to treatment with mineral fertilisers”

✓ located verbatim in the source · abstract, characters 1399–1531 · show in text ↑

fertilization · quality: phytochemicals · Brassica oleracea (wild cabbage)Results differ

66 papers: 57 positive, 9 negative or no effect

56 papers in the same direction as this paper · 9 in the opposite direction

  1. negative
  2. positive
  3. no effect

62 papers more in this group

See all 66 papers →

fertilization · nutrient: content · Brassica oleracea (wild cabbage)Positive and negative results

146 papers: 127 positive, 19 negative or no effect

126 papers in the same direction as this paper · 17 in the opposite direction · 2 reporting no difference from an alternative

  1. positive
  2. positive
  3. positive

142 papers more in this group

See all 146 papers →

fertilization · yield · Brassica oleracea (wild cabbage)Positive and negative results

496 papers: 445 positive, 51 negative or no effect

444 papers in the same direction as this paper · 43 in the opposite direction · 8 reporting no difference from an alternative

  1. no effect
  2. positive
  3. positive

492 papers more in this group

See all 496 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.