Abstract
In a one-year vegetation pot experiment we compared the effect of the digestate from a biogas plant and mineral fertilisers on yield and quality parameters of kohlrabi, variety Moravia. 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, i.e. 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 inhibited growth of kohlrabi after the application of NPKMg (4) was obviously the consequence of early planting after the application of fertilisers (5 days) and of the salinity of the small content of soil in the pot and resulted in the lowest weight of single bulbs (69 g), followed by the unfertilised control treatment (75 g). After the application of the digestate (treatment 3) the weight of single bulbs significantly increased (126 g) compared to the urea treatment (101 g) and all the other treatments. The content of ascorbic acid in the fertilised treatments did not differ (441-458 mg/kg) but it increased significantly compared to the unfertilised treatment (398 mg/kg). There were significant differences among all the fertilised treatments (1-2-3-4) in the bulb nitrate content (346-1,147-815-1,091 mg NO3-/kg fresh matter, respectively). After digestate application their content decreased significantly to 815 mg NO3-/kg fresh matter. Digestate treatment resulted in comparable or better yields and qualitative parameters compared to all the other treatments.
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Claims 7
Claim · model-written summary
NPKMg produced the lowest single bulb weight, 69 g.
- Taxon
- Kohlrabi
Brassica oleracea var. gongylodest0 - Treatment
- NPKMge0
- Outcome
- weight of single bulbse0
- Direction
- loweste0
- Value
- 69 ge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of NPKMg (4) was obviously the consequence of early planting after the application of fertilisers (5 days) and of the salinity of the small content of soil in the pot and resulted in the lowest weight of single bulbs (69 g)”
t0“Kohlrabi Bulbs”
Claim · model-written summary
Digestate increased single bulb weight to 126 g versus urea at 101 g and other treatments.
- Taxon
- KohlrabiBrassica oleracea var. gongylodest0
- Treatment
- digestatee0
- Outcome
- weight of single bulbse0
- Direction
- increasede0
- Value
- 126 ge0
- Qualifier
- 101 ge0
- Comparator
- urea treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After the application of the digestate (treatment 3) the weight of single bulbs significantly increased (126 g) compared to the urea treatment (101 g) and all the other treatments.”
t0“Kohlrabi Bulbs”
Claim · model-written summary
Fertilized treatments had similar bulb ascorbic acid content of 441-458 mg/kg.
- Taxon
- KohlrabiBrassica oleracea var. gongylodest0
- Treatment
- fertilised treatmentse0
- Outcome
- content of ascorbic acide0
- Direction
- did not differe0
- Value
- 441-458 mg/kge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The content of ascorbic acid in the fertilised treatments did not differ (441-458 mg/kg)”
t0“Kohlrabi Bulbs”
Claim · model-written summary
Fertilization significantly increased bulb ascorbic acid versus unfertilized treatment at 398 mg/kg.
- Taxon
- KohlrabiBrassica oleracea var. gongylodest0
- Treatment
- fertilised treatmentse0
- Outcome
- content of ascorbic acide0
- Direction
- increasede0
- Value
- 441-458 mg/kge0
- Qualifier
- 398 mg/kge0
- Comparator
- unfertilised treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The content of ascorbic acid in the fertilised treatments did not differ (441-458 mg/kg) but it increased significantly compared to the unfertilised treatment (398 mg/kg).”
t0“Kohlrabi Bulbs”
Claim · model-written summary
Bulb nitrate content differed significantly among fertilizer treatments.
- Taxon
- KohlrabiBrassica oleracea var. gongylodest0
- Outcome
- bulb nitrate contente0
- Direction
- differencese0
- Value
- 346-1,147-815-1,091 mg NO3-/kg fresh mattere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were significant differences among all the fertilised treatments (1-2-3-4) in the bulb nitrate content (346-1,147-815-1,091 mg NO3-/kg fresh matter, respectively).”
t0“Kohlrabi Bulbs”
Claim · model-written summary
Digestate significantly decreased bulb nitrate content to 815 mg NO3-/kg fresh matter.
- Taxon
- KohlrabiBrassica oleracea var. gongylodest0
- Treatment
- digestatee0
- Outcome
- bulb nitrate contente1
- Direction
- decreasede0
- Value
- 815 mg NO3-/kg fresh mattere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After digestate application their content decreased significantly to 815 mg NO3-/kg fresh matter.”
t0“Kohlrabi Bulbs”
e1“bulb nitrate content”
Claim · model-written summary
Digestate yielded comparable or better yield and quality than the other treatments.
- Taxon
- KohlrabiBrassica oleracea var. gongylodest0
- Treatment
- Digestate treatmente0
- Outcome
- yields and qualitative parameterse0
- Direction
- comparable or bettere0
- Comparator
- all the other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Digestate treatment resulted in comparable or better yields and qualitative parameters compared to all the other treatments.”
t0“Kohlrabi Bulbs”
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See all 146 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.