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1

The effect of covering on the content of macroelements in basil [Ocimum basilicum L.] cultivated for a bunch harvest

100%
Jadczak D., Blaszczuk A., Rekowska E.
Journal of Elementology
|
2005
|
tom 10
|
nr 4 Suppl.1
37-38
2
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Effect of covering on the content of macroelements in yield of basil (Ocimum basilicum L.) cultivated for a bunch harvest

100%
Jadczak D., Blaszczuk A., Rekowska E.
Journal of Elementology
|
2006
|
tom 11
|
nr 2
The study was carried out in 2002 and 2003. The experimental material was basil plants cultivated in the field for a bunch harvest, using for plant covering perforated foil and polypropylene unwoven cloth. The control object was basil grown without covering. The covers tested in the experiment had a significant influence on the yielding of basil cultivated for a bunch harvest. The highest yield was obtained when polypropylene unwoven cloth was used. Basil plants grown under polypropylene unwoven cloth were the highest (18.2 cm), had the biggest diameter (13.4 cm) and the largest leaves (5.9 cm long and 3.3 cm wide). Using covers (perforated foil and polypropylene unwoven cloth) caused a decrease of dry matter content in the yield of basil, in comparison with the plants grown without covering.The covers used in the study caused a decrease of nitrogen, potassium, calcium and magnesium in the basil yield, but did not decrease phosphorus and sodium content.
3

Effect of sowing date on quantity and quality of yield of chervil [Anthriscus cerefolium L. [Hoffm.] ssp. sativum] grown for a bunch harvest

84%
Jadczak D., Grzeszczuk M.
Herba Polonica
|
2009
|
tom 55
|
nr 3
292-297
The aim of the studies carried out in 2004-2006 was the estimation of quantity and quality of chervil yield according to the sowing date: 10 April, 25 April and 10 May. On the base of obtained results it was said that the sowing date had a significant influence on the chervil yield, which was higher when the earliest date of sowing was used. However, there was no significant effect of sowing dates on the leaf blade mass and leafstalk mass in the mass of a single bunch. Participation of leaf blades in a bunch mass amounted from 63.4% for the latest sowing.date to 55.5% when seeds were sown on 10 April. Moreover, the chervil yield was characterized by a quite high mineral compounds content, especially iron, man­ganese, zinc and copper. However, significant differences were found only in the content of calcium. The highest amount of this macroelement was noted in the second year of the experiment.
4
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Evaluation of the yield and biological value of tarragon (Artemisia dracunculus L.) in the bunch harvest cultivation

67%
Zawislak G., Nurzynska-Wierdak R.
Acta Scientiarum Polonorum. Hortorum Cultus
|
2014
|
tom 13
|
nr 4
The biological value of fresh and dried spice material is strongly influenced by climatic and agronomic conditions as well as by genetic and ontogenetic factors. In the available scientific literature, few publications present the problems of growing herbal plants for direct consumption and discuss the biological value of fresh herbal material. Therefore, the aim of the present study was to evaluate the yield and quality of tarragon herb grown for bunching depending on plant density (20 × 20 cm and 30 × 30 cm) and harvest date (beginning of July and beginning of September). This study was conducted during the period 2010–2012 at the Experimental Station of the Department of Vegetable Crops and Medicinal Plants, University of Life Sciences in Lublin, in south-east region of Poland (51º14’N 22º34’E). In fresh plant material, the contents of L-ascorbic acid, chlorophyll, carotenoids and essential oil were determined, while the contents of essential oil, tannins and flavonoids were determined in leaf herbage. The yield of tarragon herb grown for bunching was dependent on the plant density and harvest date as well as their interaction. Plants grown at lower density and harvested during the early summer period were characterized by better yield parameters compared to the other treatments. Tarragon herb harvested at the beginning of July was characterized by higher concentrations of L-ascorbic acid, chlorophyll a, b and a + b, flavonoids and essential oil as well as a lower content of tannins than the plant material harvested at the beginning of September. The carotenoid content in tarragon herb was not dependent on the factors studied, with their significant interaction. In growing tarragon for bunching, lower plant density can be recommended, since it contributes to high herb and essential oil yields. The beginning of July proved to be a more favourable time for harvesting tarragon grown for bunching than the beginning of September due to the quantity and biological value of tarragon yield and essential oil yield.
5

Effect of sowing date on the quantity and quality of the yield of summer savory [Satureja hortensis L.] grown for a bunch harvest

67%
Jadczak D.
Herba Polonica
|
2007
|
tom 53
|
nr 3
The aim of the study was to estimate the influence of the sowing date (10 April, 25 April and 10 May) on the quantity and quality of summer savory cv. 'Saturn' grown for a bunch harvest. It was proved that sowing date made a significant influence on the yield quantity. Higher yield was obtained when seeds were sown on 25 April, but only according to yield collected from the plots where the earliest sowing date (10 April) was used. There was no significant effect of earlier sowing date on the plant mass. However, the highest par­ticipation of leaves in the yield was noted for sowing on 10 April. The obtained yield was characterized by high content of mineral compounds. The content of essential oil in the aerially dried herb amounted 1.05-1.55%.
6
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Effect of a sowing date on the quantity and quality of the yield of tarragon [Artemisia dracunculus L.] grown for a bunch harvest

67%
Jadczak D., Grzeszczuk M.
Journal of Elementology
|
2008
|
tom 13
|
nr 2
The aim of the study was to estimate the influence of a sowing date (10 April, 25 April and 10 May) on the quantity and quality of the yield of tarragon grown for a bunch harvest. The yields of tarragon plants were assayed in 2004-2006. Chemical analyses were made in the years 2004 and 2005. In the dry plant material, the content of macro- and microelements: total nitrogen, phosphorus, potassium, calcium, sodium, magnesium, manganese, zinc, iron and copper was assessed. Moreover, the content of essential oils in dry plant material was estimated. In the raw plant material, the content of L-ascorbic acid and the scavenging effect on DPPH radical were measured. It was proved that the sowing dates had a significant effect on the yield quantity. Significantly higher yield (424.5 kg⋅100 m-2) was obtained when seeds were sown on 10 May. The yield significantly decreased when seeds were sown on 10 April. The test sowing dates had no significant effect on the biometrical characteristics of tarragon plants during the harvest; only the leaves were significantly wider when the earliest sowing date was used. The yields were characterized by a high content of mineral compounds. However, the content of iron was twice as high in 2004 as in 2005. Also, the content of zinc and copper was higher in the first year of the study, respectively by 87.2% and 76.9%, compared with the yield obtained in the year 2005. The content of essential oils (mean for years of the study) was 0.59%, that of L-ascorbic acid was 10.08 mg⋅100 g-1 f.m. and the scavenging effect of tarragon herb on DPPHradical was 26.74%.
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