Abstract
The information in the literature concerning the influence of the nutrient supply on the yield of biomass and essential oil in plants belonging to the Lamiaceae, in particular in thyme, is very contradictory. However, it is well known, the quantity of fertilisers and their composition may influence not only the biomass and essential oils, but also the vitality and the hibernation of the thyme plants. Therefore, a field experiment with the cv. ‘Deutscher Winter’ was carried out in order to investigate the effects of fertilisation during a three- years-cultivation time. Five treatments were applied (standard fertilisation without N, twice of the quantity of N, twice of the quantity of K, covering with fleece, and double plant density) and their effects on the content of essential oil and thymol, yield of thyme (plant height, fresh matter, dry matter, leaf drug), nutrient uptake and influence on hibernation were analysed. The highest N- and K- uptake and yield was recorded in the treatments covered with fleece and at the double plant density with standard fertilisation in average of the three years. The lowest yield of leaf drugs was determined in the treatment without N- fertiliser, the highest at the double plant density. The quantity of essential oil was highest in the treatment double plant density, whereas the lowest essential oil quantity was determined when twice the quantity of N was applied. The content of thymol was highest in the treatment standard fertilisation without N-fertiliser. Concerning the vitality and effect on hibernation best results were determined in the treatments without N- fertilisation and covering with fleece. These results confirm the theory that nitrogen has a negative effect on the content of the essential oil and their components as well the vitality of the plants during the winter season.
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Claims 8
Claim · model-written summary
Thyme showed the highest N and K uptake and yield in the treatments covered with fleece and at double plant density with standard fertilisation, averaged over three years.
- Taxon
- thyme
.JPG?width=60)
Thymus vulgarist0 - Treatment
- covered with fleece and at the double plant density with standard fertilisatione0
- Outcome
- N- and K- uptake and yielde0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.JPG?width=500)
Verbatim
t0“thyme (Thymus vulgaris L.)”
e0“The highest N- and K- uptake and yield was recorded in the treatments covered with fleece and at the double plant density with standard fertilisation”
Claim · model-written summary
The lowest yield of thyme leaf drug occurred in the treatment without N fertiliser.
- Taxon
- thymeThymus vulgarist0
- Treatment
- without N- fertilisere0
- Outcome
- yield of leaf drugse0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“thyme (Thymus vulgaris L.)”
e0“The lowest yield of leaf drugs was determined in the treatment without N- fertiliser, the highest at the double plant density”
Claim · model-written summary
The highest yield of thyme leaf drug occurred at double plant density.
- Taxon
- thymeThymus vulgarist0
- Treatment
- double plant densitye0
- Outcome
- yield of leaf drugse0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“thyme (Thymus vulgaris L.)”
e0“The lowest yield of leaf drugs was determined in the treatment without N- fertiliser, the highest at the double plant density”
Claim · model-written summary
The quantity of essential oil was highest in the double plant density treatment.
- Taxon
- thymeThymus vulgarist0
- Treatment
- double plant densitye0
- Outcome
- quantity of essential oile0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“thyme (Thymus vulgaris L.)”
e0“The quantity of essential oil was highest in the treatment double plant density”
Claim · model-written summary
The lowest essential oil quantity occurred when twice the standard quantity of N was applied.
- Taxon
- thymeThymus vulgarist0
- Treatment
- twice the quantity of Ne0
- Outcome
- essential oil quantitye0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“thyme (Thymus vulgaris L.)”
e0“the lowest essential oil quantity was determined when twice the quantity of N was applied”
Claim · model-written summary
Thymol content was highest in the treatment with standard fertilisation without N fertiliser.
- Taxon
- thymeThymus vulgarist0
- Treatment
- standard fertilisation without N-fertilisere0
- Outcome
- content of thymole0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“thyme (Thymus vulgaris L.)”
e0“The content of thymol was highest in the treatment standard fertilisation without N-fertiliser”
Claim · model-written summary
Vitality and hibernation results were best in the treatments without N fertilisation and with fleece covering.
- Taxon
- thymeThymus vulgarist0
- Treatment
- without N- fertilisation and covering with fleecee0
- Outcome
- vitality and effect on hibernatione0
- Direction
- beste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“thyme (Thymus vulgaris L.)”
e0“Concerning the vitality and effect on hibernation best results were determined in the treatments without N- fertilisation and covering with fleece”
Claim · model-written summary
The authors conclude that nitrogen has a negative effect on essential oil content and its components and on plant vitality in winter.
- Taxon
- thymeThymus vulgarist0
- Treatment
- nitrogene0
- Outcome
- content of the essential oile0
- Direction
- negative effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“thyme (Thymus vulgaris L.)”
e0“nitrogen has a negative effect on the content of the essential oil and their components as well the vitality of the plants during the winter season”
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See all 21 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.