Wyniki wyszukiwania - Biblioteka Nauki

1

Comparison of leaf yields and chemical composition of the Hamburg and leafy types of parsley. I. Leaf yields and their structure

100%

Kmiecik W. , Lisiewska Z.

Folia Horticulturae

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1999

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tom 11

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nr 1

2

The effect of foliar feeding of potassium salts and urea in spinach on gas exchange, leaf yield and quality

63%

Borowski E. , Michalek S.

Acta Agrobotanica

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2009

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tom 62

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nr 1

EN

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.

PL

W doświadczeniu wazonowym prowadzonym w fitotronie badano efektywność odżywiania dolistnego szpinaku (Spinacia oleracea L.) różnymi solami potasu bez i z dodatkiem 0,5% CO(NH2)2. Potas zastosowano 3-krotnie w formie 1% roztworów KCl, KNO3, K2SO4 i C6H5K3O7 x H2O wobec wody jako kontroli. Uzyskane wyniki wykazały, że dolistne odżywianie szpinaku solami potasu jest skuteczną drogą uzupełniania poziomu K+ w roślinach w trakcie wegetacji. Największą zawartość potasu w liściach zawierały rośliny odżywiane KNO3, a nieznacznie tylko mniejszą żywione K2SO4, C6H5K3O7 x H2O i KCl. Aplikacja soli potasu wpłynęła na intensywniejszy przebieg wymiany gazowej liści (przewodność szparkowa, fotosynteza, transpiracja), a w wyniku tego wzrost plonu liści. Najbardziej efektywnie na wymienione procesy oddziaływał azotan i cytrynian potasu. Traktowanie szpinaku solami potasu wpłynęło na wzrost zawartości białka, chlorofilu, karotenoidów, azotanów i żelaza, a spadek zawartości witaminy C i wapnia w liściach.

3

The effect of foliar nutrition of spinach (Spinacia oleracea L.) with magnesium salts and urea on gas exchange, leaf yield and quality

63%

Borowski E. , Michalek S.

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tom 63

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nr 1

EN

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.

4

Comparison of leaf yields and chemical composition of the Hamburg and leafy types of parsley. II. Chemical composition

63%

Kmiecik W. , Lisiewska Z.

Folia Horticulturae

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1999

|

tom 11

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nr 1

5

The effect of bacteria-based formulations on tea (Camellia sinensis L.) growth, yield, and enzyme activities

51%

Cakmakci R. , Erturk Y. , Varmazyari A. , Atasever A. , Kotan R. , Haliloglu K. , Erat M. , Turkyilmaz K. , Sekban R. , Haznedar A.

Annals of Warsaw University of Life Sciences - SGGW. Horticulture and Landscape Architecture

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2017

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tom 38

6

Impact of seed light stimulation on the mechanical strength and photosynthetic pigments content in the scorzonera leaves

51%

Ciupak A. , Dziwulska-Hunek A. , Krawiec M. , Gladyszewska B.

Acta Agrophysica

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2019

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tom 26

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nr 1

7

Determination of some agronomical characteristics and essential oil variation in different local Ocimum basilicum L. ecotypes under semi-arid climatic conditions

51%

Kizil S. , Toncer O. , Sogut T. , Diraz E. , Karaman S.

Acta Scientiarum Polonorum. Hortorum Cultus

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2019

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tom 18

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nr 3

EN

The study aimed to determine agronomic characteristics and essential oil components of different basil ecotypes in semi-arid climatic conditions of South Eastern Anatolia, Diyarbakir, Turkey. Two-year harvest data about fresh and dry herb yield, dry leaf yield, essential oil content and its components from the plants of year 2015 and 2016 was analyzed in this study. Essential oil components were detected by gas chromatography/ mass spectrometry (GC/MS). The resulting outcomes demonstrated that both ecotypes and harvests had important effects on fresh and dry herb, dry leaf yield and essential oil contents of sweet basil. The highest dry leaf yield was noted from green leafy ecotypes and from second harvest stage. Twenty-three constituents were detected in the essential oil of O. basilicum ecotypes. The main components of basil essential oil were linalool, methyl chavicol, neral, geranial and methyl cinnamate that differed according to ecotypes and harvests during experimental years 2015 and 2016. Purple leafy basil ecotypes were determined as linalool rich, while greenish leaf ecotypes were abundant in methyl chavicol. Silbe – green ecotype contains higher neral and geranial levels than the other ecotypes. It was concluded that basil plant could be grown successfully and harvested two or more times to prefer for maximum dry leaf yield and essential oil contents under semi-arid climatic conditions.

8

Influence of mineral fertilisation on the yield and macroelement content in sugar beet

38%

Acta Agrophysica

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2017

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tom 24

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nr 2

EN

The aim of this study was to assess the influence of mineral NPK, Mg and micronutrient fertilisation on the content of macroelements and root yield of a sugar beet cultivar called Khazar. The effects of three fertilisation levels were assessed. Additionally, the highest NPK dose was analysed in treatments with NPK + Mg and micronutrients (B, Cu, Zn, Mn). The increasing level of NPK fertilisation as well as the nutrition with magnesium and micronutrients caused an increase in root yield. The highest yield of roots was achieved by beet plants fertilised with the high NPK dose combined with magnesium, boron, copper and zinc. It was demonstrated that roots fertilised with the 3NPK dose and magnesium tended to accumulate more N-total. At the same time, the applied micronutrients contributed to a decline in the N-total content of dry matter in roots. The analysed fertilisation with NPK and micronutrients did not affect the content of phosphorus, potassium and calcium in either of the two beet organs. In general, beet leaves were characterised by higher concentrations of nutrients than roots.

PL

Przedmiotem badań było określenie wpływu nawożenia mineralnego NPK, Mg i mikroelementów na plonowanie buraka cukrowego oraz na zawartość w obu organach tej rośliny tj. w korzeniach i liściach – makroskładników. Do badań wybrano odmianę Khazar. Oceniono efekty trzech poziomów nawożenia NPK. Dodatkowo na tle najwyższej dawki NPK zastosowano magnez oraz mikroelementy – B, Cu, Zn i Mn. Wzrastające nawożenie NPK, jak też nawożenie magnezem i mikroelementami powodowało przyrost plonu korzeni. Najwyższy ich plon otrzymano w obiekcie nawożonym wysoką dawką NPK wraz z magnezem, borem, miedzią i cynkiem. Wykazano tendencję do większej akumulacji N-ogólnego w korzeniach nawożonych dawką 3NPK oraz magnezem. Mikroelementy przyczyniły się do obniżenia zawartości azotu ogólnego w suchej masie korzeni. Rozpatrywane nawożenie NPK i mikroskładnikami nie wpłynęło na zawartość fosforu, potasu i wapnia w obu organach buraka. Ogólnie liście charakteryzowały się większymi zawartościami składników pokarmowych niż korzenie.