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1
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Response of the yield and mineral composition of garden thyme (Thymus vulgaris L.) herbage to various NPK proportions

100%
Kozera W., Majcherczak E., Barczak B., Knapowski T., Wszelaczynska E., Poberezny J.
Journal of Elementology
|
2015
|
tom 20
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nr 4
Garden thyme is a very important essential herbal plant grown in Poland. As well as being able to regulate digestion processes, thyme herbage possesses disinfecting, expectorant, antioxidant, spasmolytic properties. Research has been launched to define the effect of NPK fertilisation on yielding, the content of essential oil as well as the mineral composition of garden thyme (Thymus vulgaris L.) herbage. The experimental factor consisted of NPK mineral fertilisation applied into soil at the following doses per hectare and proportions: A0 – without mineral fertilisation, A1 – 30 kg N + 22 kg P + 100 kg K (N:P:K was: 1:0.75:3.33), A2 – 60 kg N (30 kg N + 30 kg N) + 22 kg P + 100 kg K (1:0.37:1.67), A3 – 90 kg N (45 kg N + 45 kg N) + 22 kg P + 100 kg K (1:0.24:1.11). The experiment comprised 4 fertilisation objects with 4 replications, and the sowing area and the harvest area of 3 m2 plot-1. Nitrogen was applied in the form of ammonium nitrate twice: pre-sowing as well as after plant emergence. Phosphorus and potassium were used pre-sowing, in the form of triple superphosphate 40% and 60% of potassium salt, respectively. The doses of 152 kg NPK ha-1 (1:0.75:3.33) – A1 and 182 kg NPK ha-1 (1:0.37:1.67) - A2 showed the most favourable effect on the yield of fresh weight, air-dried weight and essential oil of herbage as well as the quality characteristics of the yields. The dose of 152 kg NPK ha-1 (A1), including 30 kg less nitrogen, was as favourable as that of 182 kg NPK ha-1 in terms of the content of air-dry weight of herbage, essential oil as well as mineral nutrients. Its application also resulted in a similar yield of essential oil. The application of 212 kg NPK ha-1 (1:0.24:1.11) was economically unjustified since, in general, it decreased the size of the yield of fresh weight of herbage and the values of its parameters studied.
2
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Economic and qualitative value of the raw material of chosen species of medicinal plants from organic farming. Part I. Yield and quality of garden thyme herb (Thymus vulgaris L.)

100%
Seidler-Lozykowska K., Mordalski R., Kucharski W., Golcz A., Kozik E., Wojcik J.
Acta Scientiarum Polonorum. Agricultura
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2009
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tom 08
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nr 3
In 2005-2007, in a field experiment, the yield and quality of the thyme herb of the Polish cultivar Słoneczko in organic farming were tested. The experiment was established on six different organic farms and one conventional farm in Poland. The following features were evaluated: fresh and dried herb yield, stem fraction in herb, essential oil content, and microbiological purity. Only from one organic farm in Słońsk thyme herb yield was higher compared with the yield from conventional cultivation, although it contained a high amount of stems. Organic thyme herb was characterized by a high content of essential oil. Evaluation of microbiological purity showed that herb contamination from both types of cultivation did not exceed the standard for raw materials treated with hot water.
3

Influence of varied nitrogen-potassium fertilization on yield, essential oil contentand mineral composition at garden thyme herb [Thymus vulgaris L.]

100%
Dzida K.
Herba Polonica
|
2007
|
tom 53
|
nr 3
The influence of nitrogen rate and type of potassium fertilizer (KCl, K2S04, KC1 + K2S04) on yield, essential oil content and mineral composition of thyme herb was examined in the greenhouse experiment. Analyzed factors did not significantly affect the plant's yielding. No negative effects of chloride ions on plant's yielding and EC value in medium were ob­served. Total content of essential oil in thyme herb ranged from 3.09% to 4.13%. When us­ing KCl, the increase of oils in herb occurred along with the increase of nitrogen rate. The inverse dependence was recorded when K2S04 was applied. Increasing nitrogen rate and various potassium fertilizers influenced on nutrients contents in thyme herb. The plant showed elevated tendency to accumulate the minerals (N-tot, N-N03, Ca, Mg, S-S04, CI) in herb due to increasing nitrogen fertilization.
4

Fresh culinary herb production in pots as affected by a method and date of garden thyme [Thymus vulgaris L.] propagation

100%
Capecka E.
Folia Horticulturae
|
2003
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tom 15
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nr 1
5

Evaluation of chemical and mechanical ways for weed control in garden thyme [Thymus vulgaris L.] growing for herbs

100%
Kwiatkowski C.
Herba Polonica
|
2007
|
tom 53
|
nr 3
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