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1

Ogorki w szklarni i w laboratorium

100%
Bujalski D.
Hasło Ogrodnicze
|
2009
|
nr 10
108-110
2
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Effect of a substrate on yielding and quality of greenhouse cucumber fruits

51%
Gajc-Wolska J., Bujalski D., Chrzanowska A.
Journal of Elementology
|
2008
|
tom 13
|
nr 2
Cucumber has high climatic demands especially in relation to temperature. Humidity, air temperature and UV light intensity are main factors affecting cucumber crop quality and quantity. Due to the instability of the above during the changing seasons in Poland, all-year-round cultivation of cucumber is difficult. In our experiment we used three types of substrates: rock wool, perlite and wood fibre. Cucumber cultivation was carried out in three times of the year. These two were main changing factors of the experiment. Our research proved that the best quality cucumbers was obtained in the second cultivation period – between April and August, due to the optimum climatic conditions for that species. The type of a substrate also affected the quantity of crops – the highest crops were on wood fiber, slightly lower on perlite. Higher content of dry matter, vitamin C, total sugars, calcium and phosphorus was observed in cucumber fruits from summer cultivation and a high content of nitrogen and potassium was found in cucumber fruits from autumn cultivation.
3
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Influence of growth conditions and grafting on the yield, chemical composition and sensory quality of tomato fruit in greenhouse cultivation

45%
Gajc-Wolska J., Kowalczyk K., Marcinkowska M., Radzanowska J., Bujalski D.
Journal of Elementology
|
2015
|
tom 20
|
nr 1
The most popular and efficient growing medium in the soilless crop cultivation consists of rockwool slabs. Nowadays, researchers strive to develop other, more environmentally friendly growing media in horticultural practice. The aim of this work was to assess the effect of growth media and grafting on the yield and fruit quality of tomato in greenhouse cultivation. The tomato cultivar Admiro F1 was used in the study. Half of the plants were grafted on the rootstock Maxifort. Tomatoes were cultivated on organic medium coconut fiber slabs and on rockwool slabs, the latter commonly used as the standard growing medium for tomato. Total yield and distribution of fruit weight classes in the total yield were investigated. The chemical quality attributes of tomato fruit, vitamin C, total soluble solids, titratable acidity, total sugars, dry matter, nitrates, phosphorus, potassium and calcium were determined. The total yield of tomato fruits was higher from plants cultivated on rockwool slabs than on coconut fiber slabs, which showed that at present rockwool is a better substrate for tomato cultivated all year round. The fruit weight distribution depended on the substrate used. Plants cultivated on rockwool slabs were characterized by higher fruit weight while those cultivated on coconut fiber slabs showed a tendency to grow smaller. There were no significant differences in the distribution of weights between fruits obtained from grafted and non-grafted plants. The chemical composition and sensory quality were mainly affected by the fruit harvest date and, to a lesser degree, by the substratum used and grafting.
4

Effect of supplementary lighting on selected physiological parameters and yielding of tomato plants

39%
Gajc-Wolska J., Kowalczyk K., Metera A., Mazur K., Bujalski D., Hemka L.
Folia Horticulturae
|
2013
|
tom 25
|
nr 2
Light is one of the basic factors needed by plants for their development. The aim of this study was to measure the effect of supplementary lighting of tomato plants with HPS and LED lamps on the chosen physiological parameters and yielding of autumn-winter cultivation crops. Two tomato cultivars (‘Komeett’ F, and ‘Starbuck’ Fj by De Ruiter Seeds) were used in this experiment. After the plants were planted, LED and HPS lamps of 100 pmol m-2 s_1 light intensity were installed. The results show that the introduction of a supplementary light source to tomato cultivation caused an increase in the intensity of photosynthesis, transpiration, stomatal conductance and chlorophyll by 57.7%, 17.1%, 39.3% and 24.4% on average, respectively. Higher values of those parameters were obtained with HPS lamps than with LED lamps. The amount of marketable crops, number of fruits and mean fruit weight were higher in both combinations in which supplementary lighting was applied, and the values of these traits were higher when the cultivation was supplementary lighted with HPS lamps than with LED lamps. Due to the overhead light configuration and continued low light output, there was no increase of efficiency when using LED lamps compared to HPS lamps despite better focusing and spectral distribution.
5
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

The effect of supplemental assimilation lighting with HPS and LED lamps on the cucumber yielding and fruit quality in autumn crop

33%
Kowalczyk K., Gajc-Wolska J., Bujalski D., Mirgos M., Niedzinska M., Mazur K., Zolnierczyk P., Szatkowski D., Cichon M., Leczycka N.
Acta Scientiarum Polonorum. Hortorum Cultus
|
2018
|
tom 17
|
nr 4
The aim of the study was to evaluate the effect of HPS and LED assimilation lighting and LED interlighting on the yielding and as cucumber fruit quality in autumn cultivation cycle. The possibilities of increasing the density of plants due to the use of LED technology were also assessed. The study was conducted in three compartments: I with HPS top light only; II with top light HPS + 2 line LED interlight, III with 100% LED, top LED + 2 line LED interlight. Light level was in every compartment kept at the level of ~320 µmol m–2 s–1. PAR. The number and weight of cucumber fruits were investigated. The harvest was carried out every day. To assess the harvest quality for the plants grown in the two terms fruits were then examined for the chemical quality attributes of cucumber fruit, such as the content of total soluble solids (TSS), total sugars (TS), ascorbic acid and nitrate (NO3) P, K and Ca. Another part of fruits was subjected to sensory analysis performed with the scaling method. The cucumber grown in the autumn growing cycle gave higher yield and the quality of fruits produced appeared more balanced for the plants lighted with HPS+LED or 100% LED as compared to the traditional, overhead HPS lighting. The above, together with the results from the rate of buds’ abortion assessment seem to legitimate the increase in the cucumber crop density when applying LED lighting.
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