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1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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The effect of foliar feeding of potassium salts and urea in spinach on gas exchange, leaf yield and quality

100%
Borowski E., Michalek S.
Acta Agrobotanica
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2009
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tom 62
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nr 1
In a pot experiment conducted in a phytotron, the effectiveness of foliar feeding of different potassium salts, with and without the addition of 0.5% CO(NH2)2, in spinach (Spinacia oleracea L.) was investigated. Potassium was applied 3 times in the form of 1% solutions KCl, KNO3, K2SO4 and C6H5K3O7XH2O, compared to water as the control treatment. The obtained results show that foliar feeding of potassium salts in spinach is an efficient method of supplementing the level of K+ in plants during vegetation. Plants fed with KNO3 had the highest content of potassium in leaves, and those fertilized with K2SO4, C6H5K3O7 X H2O and KCl had an only slightly lower potassium content. The application of potassium salts resulted in more intensive gas exchange in leaves (stomatal conductance, photosynthesis, transpiration) and, as a consequence of that, increased leaf yield. Potassium nitrate and citrate influenced most effectively the abovementioned processes. The treatment of spinach with potassium salts resulted in an increased content of protein, chlorophyll, carotenoids, nitrates and iron as well as a decreased content of vitamin C and calcium in leaves.
2
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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The effect of foliar nutrition of spinach (Spinacia oleracea L.) with magnesium salts and urea on gas exchange, leaf yield and quality

100%
Borowski E., Michalek S.
Acta Agrobotanica
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2010
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tom 63
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nr 1
In a pot experiment conducted in a phytotron, the effectiveness of foliar nutrition of spinach (Spinacia oleracea L.) with different magnesium salts with and without the addition of 0.5% CO(NH2)2 was studied. Magnesium was applied 3 times in the form of solutions of MgSO4 x 7H2O, Mg(NO3)2 x 6H2O, MgCl2 x 6H2O, C4H6O4Mg x 4H2O, compared to water as the control treatment. The obtained results showed that foliar feeding of spinach with inorganic magnesium salts was an efficient method for supplementing the Mg level in plants during the growing period. But the application of a metalo-organic complex in the form of magnesium acetate (C4H6O4Mg x 4H2O) at a concentration of 1.7%, in spite of a similar effect on leaf Mg content, induced phytotoxic symptoms in the form of chlorotic and necrotic spots on the leaves. The application of the solutions of inorganic magnesium salts had a significant effect, resulting in more intensive leaf gas exchange (stomatal conductance, transpiration and photosynthesis) and an increase in leaf yield. Magnesium sulphate affected the abovementioned processes in the most effective way, while magnesium acetate had a negative impact. Foliar feeding of spinach with the magnesium salts resulted in an increased leaf content of protein, chlorophyll, carotenoids, nitrates and proline, but a decrease in vitamin C content. The addition of urea to the applied magnesium salt solutions increased the plant gas exchange rates and the leaf content of protein, chlorophyll, carotenoids, nitrates and proline, but it decreased the content of vitamin C, potassium and magnesium.
3

Evaluation of three forms of stinging nettle (Urtica dioica L.) in respect of yield of leaves and its quality

80%
Roslon W., Baczek K., Zagorska K.
Annals of Warsaw University of Life Sciences - SGGW. Horticulture and Landscape Architecture
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2008
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tom 29
4
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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GA4+7 plus benzyladenine in combination with sucrose improves postharvest leaf and inflorescence quality in Lilium ‘Alma Ata’

80%
Krstulovic A., Preberg T., Generalic Mekinic I., Han Dovedan I., Gunjaca J.
Acta Scientiarum Polonorum. Hortorum Cultus
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2018
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tom 17
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nr 3
The interaction between foliar treatment with 100 mg∙dm–3 of both gibberellic acid 4+7 (GA4+7) and benzyladenine (BA) and vase solution containing 3% sucrose was analysed in cut Lilium ‘Alma Ata’. GA4+7+BA considerably delayed leaf senescence, suppressed anthocyanin accumulation in the leaves of plants held in the sucrose solution and improved the average longevity of the flowers and the vase life of the stems. Sucrose in the vase solution strongly reduced the abscission of leaves and contributed to the enlargement of the top flower. The number of significant interactions between the treatments indicated that the investigated factors acted dependently mainly on flower quality, while their action on leaf quality was mostly independent. Results show that combined treatment with growth regulators and sucrose may considerably increase postharvest quality of cut Lilium ‘Alma Ata’.
5

Wielkość plonu handlowego i jakość liści tytoniu Virginia w zależności od wybranych czynników agrotechnicznych

61%
Mis T.
Acta Agraria et Silvestria. Series Agraria
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2001
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tom 39
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