Wyniki wyszukiwania

1

Usefulness of iron chelates for fertilisation of greenhouse tomato cultivated in rockwool

100%

Komosa A., Kolota E., Chohura P.

Vegetable Crops Research Bulletin

|

2001

|

tom 55

2

Use rockwool as a substrate for Peperomia obtusifolia, Streptocarpus hybridus and Spathiphyllum floribundum

100%

Strojny Z.

Acta Agrobotanica

|

2000

|

tom 53

|

nr 1

Two experiments were conducted, in which the granulated rockwool 'Grodan', utilised rockwool 'Flomiin' used before as slabs and remained after 2-year carnation culture (UR) - shredded and steamed and two kinds of insulation rockwool of domestic production: from Gliwice (RG) and from Nidzica (RN) were used as a substrate or its ingredient for mentioned in title plants. Particular plant species expressed somewhat diversified reaction, but generally rockwool showed full usability as a substrate or its component. The best kind appeared to be UR. RG was good in the mix, where it was in 25% of the volume, but RN was unsuitable.

3

The influence of air-water conditions in rockwool on the yielding of sweet pepper

100%

Stepowska A.

Vegetable Crops Research Bulletin

|

2002

|

tom 56

4

Evaluation of pollen fertility in pepino (Solanum muricatum Ait.)

84%

Kowalczyk K., Kobryn J., Zielinski W.

Folia Horticulturae

|

2008

|

tom 20

|

nr 1

5

The effect of different NH4-NO3 ratios on the production and quality of gerbera grown in rockwool

84%

Guba W.

Journal of Fruit and Ornamental Plant Research

|

1994

|

tom 02

|

nr 4

6

Mineral nutrient concentration in potting media [rockwool, peat, sand] and growth of tomato

84%

Nurzynski J., Michalojc Z., Jarosz Z.

Vegetable Crops Research Bulletin

|

2001

|

tom 55

7

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

The effect of nutrient solution pH on phosphorus availability in soilless culture of tomato

84%

Dysko J., Kaniszewski S., Kowalczyk W.

Journal of Elementology

|

2008

|

tom 13

|

nr 2

Greenhouse experiments with tomato were conducted in the years 2004-2006. The aim was to study the effect of nutrient solution pH on the availability of phosphorus in soilless culture of tomato. Tomato plants were grown on mats made of shredded rye straw, and on slabs of peat and rockwool. The plants were fertilized with a standard nutrient solution of different pH: 4.5, 5.0, 5.5, 6.0 and 6.5. Such different pH levels of the nutrient solution used in soilless culture modified the pH of the root growth zone. This effect was more evident in rockwool than in the organic media (especially straw). The phosphorus content in the root zone was closely associated with the pH value of the supplied nutrient solution and the kind of growing medium. Considerably lower concentrations of phosphorus were recorded in the organic media (straw, peat) than in rockwool. As the pH level of the nutrient solution increased, so did the pH of the root zone, whereas the amount of available P-PO4 decreased. The course of these changes was similar in all the substrates. However, the dynamics of the changes was weaker in the organic media. With an increase in the pH of the nutrient solution, the average phosphorus content in tomato leaves decreased. The P-PO4 concentration was higher in the leaves of tomato plants growing in rockwool compared to those in the organic media. A significantly higher marketable yield was obtained from tomato plants cultivated in rockwool than in the organic media. For all the growing media, the highest yield of tomatoes was obtained after feeding the plants with the nutrient solution of pH 5.5.

8

Evaluation of the suitability of new greenhouse tomato F1 hybrids for growing in rockwool in spring cycle

84%

Kozik E. U.

Vegetable Crops Research Bulletin

|

1999

|

tom 51

9

The influence of substrate types in non-heated plastic tunnel cultivation on sweet pepper yielding and postharvest quality of fruits

84%

Stepowska A., Kosson R.

Vegetable Crops Research Bulletin

|

2003

|

tom 58

10

The effect of pH in the root medium on production and quality of gerbera grown in rockwool

84%

Guba W.

Journal of Fruit and Ornamental Plant Research

|

1994

|

tom 02

|

nr 3

11

Assessment of quality attributes of endive (Cichorium endivia L.) depending on a cultivar and growing conditions

67%

Kowalczyk K., Gajc-Wolska J., Marcinkowska M., Jabrucka-Pioro E.

Acta Scientiarum Polonorum. Hortorum Cultus

|

2015

|

tom 14

|

nr 2

Endive plants were hydroponically grown in greenhouse control conditions. The aim of this investigation was to assess the biological quality of endive cultivated in three different growing media. Organic media: coconut fiber and wood fiber, were compared to rockwool, commonly used as a standard horticultural medium in greenhouse vegetable production. Three crispum leaf endive cultivars: ‘Galanti’, ‘Perceval’ and ‘Barundi’ and one latifolium leaf cultivar (escarole chicory): ‘Kethel’ were examined during the spring time. At about 10 days before harvest the plants were covered with low tunnel made from double-sided black and white foil to bleach the leaves and at 5–7 days before the end of the experiment nutrient solution was replaced by water to reduce the nitrate concentration in the leaves of endive. The content of dry matter, ascorbic acid, total soluble solids (TSS), total sugars (TS), phenolic acids and nitrates (NO3), P, K and Ca was determined in leaves of both bleached and not bleached plants. Also the antioxidant activity was measured by two assays DPPH and FRAP. The effect of cultivation substrate, cultivar, and bleaching treatment on the quality of endive appeared diversed. The unbleached endive showed a higher content of dry mass, higher concentrations of sugars, TSS, potassium, and calcium than the bleached plants. The bleached plants had significantly lower fresh mass of plants (by 33% in average), but in turn were characterized by higher concentrations of phosphorus and polyphenolic acids. Plants cultivated on wood fiber contained the smallest amount of nitrates, comparing to plants grown either on rockwool or coconut fiber. None of the investigated plants contained more nitrates than the acceptable level of nitrates for lettuce grown under cover. The antioxidant activity of endive plants measured by FRAP method was higher in not bleached endive plants than in the bleached ones. The antioxidant impact of endive plants expressed as DPPH was not reduced in response to bleaching. The highest antioxidant activity was observed in plants of ‘Kethel’.

12

Contents of macro- and microelements in root environment of greenhouse tomato grown in rockwool and wood fiber depending on nitrogen levels in nutrient solutions

67%

Komosa A., Kleiber T., Pirog J.

Acta Scientiarum Polonorum. Hortorum Cultus

|

2010

|

tom 09

|

nr 3

The aim of investigations conducted in the years 2005–2007 was to determine the chemical composition of nutrient solutions in the root environment of tomato grown in wood fiber and rockwool, under the influence of diverse levels of nitrate nitrogen in the nutrient solution amounting 200, 220 and 240 mg N-NO3·dm-3. With an increase in nitrate nitrogen content in nutrient solutions used in plant fertigation a significant increase was observed in the contents of N-NO3 in nutrient solutions of the root environment, collected from wood fiber and rockwool. No such effect was found for contents of N-NH4, P, K, Ca, Mg, Fe, Mn, Zn, Cu, B, Na, Cl or pH and EC. In case of wood fiber the following nutrient concentration series was found in nutrient solutions of the root environment in relation to the nutrient solution flowing from the drippers: Na > Cu > Ca > Zn > K > Cl > B > N-NO3; the following were reduced Fe > Mg > P-PO4 > N-NH4 > Mn. Nutrients being concentrated in root environment solutions during tomato growing in rockwool were: Na > Ca > Cu > Fe > Cl > K > Zn > B > S-SO4 > N-NO3, while contents of Mg > P-PO4 > N-NH4 > Mn decreased. Despite of a wide range of carbon to nitrogen ratio (C:N) in wood fiber (123–127), no significant reduction of nitrates was shown in the root environment. It was a result of adequate application frequency of nutrient solutions during a day.

13

Changes of physical properties in rockwool and glasswool slabs during hydroponic cultivation of roses

67%

Nowak J. S.

Journal of Fruit and Ornamental Plant Research

|

2010

|

tom 18

|

nr 2

349-360

Roses cv. 'Trixx' were grown in 4 different slabs of mineral wool (100 cm length, 15 cm width and 7.5 cm height), which were placed on specially constructed racks in a greenhouse. The cultivation method using bent shoots was used. The studied growth media were: rockwool slabs - Master and Pargro which had a horizontal fibrous structure, Bomat slabs with a homogeneous structure and glasswool Cultilene slabs with a homogeneous structure. The physical properties of mineral wool slabs were obtained from 15 cm long and 15 cm width samples. The samples were taken from slabs before cultivation, and periodically from a greenhouse during the 2.5 year growing period (6, 12, 18, 24 and 30 months after planting). The bulk density increased and total porosity decreased in the Master and Cultilene slabs as early as after six months of cultivation. Other changes in the remaining slabs were not evident until the end of the cultivation stage. The air-water properties depended on the cultivation time and were very different at -4 cm H2O. More stable values of air-water properties were observed at -10 cm H2O. Usually in the beginning of the cultivation period, water content was lower - especially at the -10 to -5 0 cm H2O range of water potential.

14

Wplyw osadu sciekowego i pouzytkowej welny mineralnej na zawartosc prochnicy i form olowiu w rekultywowanym utworze bezglebowym

67%

Baran S., Wojcikowska-Kapusta A., Zukowska G.

Zeszyty Problemowe Postępów Nauk Rolniczych

|

2008

|

tom 533

31-38

Celem badań była: a) analiza wpływu osadu ściekowego i poużytkowej wełny mineralnej Grodan na zawartość węgla organicznego w rekultywowanym gruncie; b) wpływu zawartości i jakości próchnicy na formy ołowiu. Użyźnianie utworu bezglebowego osadem ściekowym i wełną mineralną bardzo korzystnie wpłynęło na bilans węgla organicznego. Grunt nawożony tylko NPK (kontrolny), w porównaniu do analizowanych sposobów rekultywacji, charakteryzował się największą zawartością form ołowiu rozpuszczalnego w H₂O i CaCl₂ , a najmniejszą form rozpuszczalnych w CH₃COOH i K₄P₂O₇. W gruncie rekultywowanym osadem ściekowym stwierdzono największą zawartość węgla organicznego i ołowiu związanego z próchnicą.

15

Optimization of fiber board properties

67%

Michel F., Brombacher V., Niemz P.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

|

2014

|

tom 86

16

Przydatnosc podloza z piasku w uprawie pomidora szklarniowego

67%

Nurzynski J., Michalojc Z., Jarosz Z.

Acta Scientiarum Polonorum. Hortorum Cultus

|

2003

|

tom 02

|

nr 2

125-130

The study was carried out in greenhouse with tomato cv. ‘Cunero’ grown in sand, rockwool and peat substrates. In researches fertigation system without recirculating with 20% overflow liquid feed was used. The results showed no significant differences in yield of tomato grown in sand, rockwool and peat substrates. Decreasing yield of tomato grown in sand by increasing (40%) N, K, Ca, Mg concentration in solution was noticed. The lowest concentration of nutrients in sand substrate was observed. Significant differences of nutrients concentration in growing mediums had no effect on leaves nutrients composition.

17

Effect of flood fertigation on yield of greenhouse lettuce grown in different substrates

67%

Sabat T., Kaniszewski S., Dysko J.

Journal of Elementology

|

2015

|

tom 20

|

nr 2

The hydroponic system is very often used for greenhouse vegetable production. The flood irrigation on a bench or on the flood floors is applied in the production of ornamental plants and vegetable transplants. This system is environmentally friendly, since fertigation is used in a closed system using the recirculation of nutrient solution. The aim of this study, conducted in 2010-2012, was to determine the effect of flood fertigation with different concentrations of nutrient solution (EC: 1.0; 2.0; 3.0; 4.0 mS cm-1) on the yield and quality of the butterhead lettuce cultivar Natalia grown in different substrates (coconut coir, peat and rockwool). The experiment was conducted in the spring and autumn cycle. The highest marketable yield at each concentration of the nutrient solution was achieved in the cultivation in rockwool, both within the spring and autumn. The highest nitrate content in lettuce in terms of both cultivation cycles was found in the lettuce grown in the nutrient solution concentration of EC 4 mS cm-1, and the lowest one was achieved in the nutrient solution concentration of EC 1.0 mS cm -1. Significantly less of nitrates was in lettuce grown in spring than in autumn. Higher levels of EC significantly increased the content of P and K in lettuce leaves during in both growing cycles, while the content of Ca and Mg was not significantly different. The applied substrates had a significant impact on the content of K, P, Ca and Mg in leaves of lettuce. The best concentration of the nutrient solution used for flood fertigation of greenhouse lettuce was EC 3.0 mS cm-1 for the spring cultivation and EC 4.0 mS cm-1 for the fall crop.

18

The effect of silicon application and type of medium on yielding and chemical composition of tomato

67%

Jarosz Z.

Acta Scientiarum Polonorum. Hortorum Cultus

|

2014

|

tom 13

|

nr 4

Fertilization of plants with silicon is particularly justified in soilless culture in which the roots of plants cannot use silicon resources in the soil. Silicon is the only element that does not harm plants when taken up in excessive amounts and its use in plant fertilization improves the yielding ability of plants and their resistance to various stress factors. The effectiveness of silicon application in growing plants is strictly dependent on both the source of this element, plant species and cultivars. The aim of this study was to determine the effect of root application of colloidal silicon as well as of three types of growing media of different silica content and varying ability to release orthosilicate monomers (rockwool, sand, straw) on yield and chemical composition of greenhouse tomato. The research was conducted in greenhouse in the period 2008–2009. Tomato was grown in an extended growth cycle (22 clusters) using a drip irrigation and fertilization system with closed nutrient solution circulation. Tomato plants fertigated with the nutrient solution enriched with silicon showed significantly higher total fruit yield (15.98 kg·plant-1) compare to plant grown in control treatments. In the studies not found significant differences in total and marketable yield as well as in mean fruit weight between plants grown in rockwool and straw mediums. The total fruit yield of tomato plants grown in sand was lower compared to rockwool-grown plants. The fruit of tomato grown in sand was shown to have more dry matter (5.52%), total sugars (2.58% FR.W.) and potassium (4.19% DW) compared to rockwool culture as well as significantly the highest amount of silicon. The leaves of tomato fertilized with the silicon-enriched nutrient solution contained more silicon as well as less manganese and zinc compared to control plants. Fertilization of plants with silicon is particularly justified in soilless culture in which the roots of plants cannot use silicon resources in the soil. Silicon is the only element that does not harm plants when taken up in excessive amounts and its use in plant fertilization improves the yielding ability of plants and their resistance to various stress factors. The effectiveness of silicon application in growing plants is strictly dependent on both the source of this element, plant species and cultivars. The aim of this study was to determine the effect of root application of colloidal silicon as well as of three types of growing media of different silica content and varying ability to release orthosilicate monomers (rockwool, sand, straw) on yield and chemical composition of greenhouse tomato. The research was conducted in greenhouse in the period 2008–2009. Tomato was grown in an extended growth cycle (22 clusters) using a drip irrigation and fertilization system with closed nutrient solution circulation. Tomato plants fertigated with the nutrient solution enriched with silicon showed significantly higher total fruit yield (15.98 kg·plant-1) compare to plant grown in control treatments. In the studies not found significant differences in total and marketable yield as well as in mean fruit weight between plants grown in rockwool and straw mediums. The total fruit yield of tomato plants grown in sand was lower compared to rockwool-grown plants. The fruit of tomato grown in sand was shown to have more dry matter (5.52%), total sugars (2.58% FR.W.) and potassium (4.19% DW) compared to rockwool culture as well as significantly the highest amount of silicon. The leaves of tomato fertilized with the silicon-enriched nutrient solution contained more silicon as well as less manganese and zinc compared to control plants.

19

The effect of different pH in root environment on yield and nutrition level of carnations grown in rockwool

67%

Guba W., Starck J. R., Strojny Z.

Journal of Fruit and Ornamental Plant Research

|

1993

|

tom 01

|

nr 1

20

Effect of nutrient solution pH regulated with hydrochloric acid on the concentration of Cl- ions in the root zone on soilless culture of tomato

67%

Kowalczyk W., Dysko J., Kaniszewski S.

Journal of Elementology

|

2008

|

tom 13

|

nr 2

The experiment was carried out in a greenhouse in the years 2004-2006. Tomato plants of cv. Blitz F1 were fertilized with a nutrient solution of different pH: 4.5, 5.0, 5.5, 6.0 and 6.5. The required nutrient solution pH was obtained by adding adequate amounts of 65% HNO3 and 33% HCl. Nitric acid was used to adjust the nutrient solution’s acidity to pH 6.5. Lower pH levels were obtained adding hydrochloric acid. The amount of the acid needed to adjust the nutrient solution pH to a required level was determined against a water acidification curve. Tomato plants were grown on organic media (peat and rye straw) and an inert medium (rockwool). Changes in the Cl- concentration in the root zone during the cultivation period depended on the kind of substrate and the concentration of chlorides in the applied nutrient solution. In the straw substrate, irrespective of the applied nutrient solution pH, higher concentrations of Cl- occurred in the early stages of cultivation. The concentration of chlorides in peat and rockwool increased during the tomato cultivation period at all of the applied pH levels of the nutrient solution. More chloride ions accumulated in the growth substrates when the nutrient solution has lower pH. Higher Cl- concentration was a result of larger doses of hydrochloric acid. However, when pH is regulated with hydrochloric acid, the permissible chloride concentration levels in the applied nutrient solution and in the root zone of tomato plants are not exceeded. As the concentration of chlorides in the nutrient solution increases, so does the Cl- content in leaves of tomato plants.

Ograniczanie wyników

Usefulness of iron chelates for fertilisation of greenhouse tomato cultivated in rockwool

Use rockwool as a substrate for Peperomia obtusifolia, Streptocarpus hybridus and Spathiphyllum floribundum

The influence of air-water conditions in rockwool on the yielding of sweet pepper

Evaluation of pollen fertility in pepino (Solanum muricatum Ait.)

The effect of different NH4-NO3 ratios on the production and quality of gerbera grown in rockwool

Mineral nutrient concentration in potting media [rockwool, peat, sand] and growth of tomato

The effect of nutrient solution pH on phosphorus availability in soilless culture of tomato

Evaluation of the suitability of new greenhouse tomato F1 hybrids for growing in rockwool in spring cycle

The influence of substrate types in non-heated plastic tunnel cultivation on sweet pepper yielding and postharvest quality of fruits

The effect of pH in the root medium on production and quality of gerbera grown in rockwool

Assessment of quality attributes of endive (Cichorium endivia L.) depending on a cultivar and growing conditions

Contents of macro- and microelements in root environment of greenhouse tomato grown in rockwool and wood fiber depending on nitrogen levels in nutrient solutions

Changes of physical properties in rockwool and glasswool slabs during hydroponic cultivation of roses

Wplyw osadu sciekowego i pouzytkowej welny mineralnej na zawartosc prochnicy i form olowiu w rekultywowanym utworze bezglebowym

Optimization of fiber board properties

Przydatnosc podloza z piasku w uprawie pomidora szklarniowego

Effect of flood fertigation on yield of greenhouse lettuce grown in different substrates

The effect of silicon application and type of medium on yielding and chemical composition of tomato

The effect of different pH in root environment on yield and nutrition level of carnations grown in rockwool

Effect of nutrient solution pH regulated with hydrochloric acid on the concentration of Cl- ions in the root zone on soilless culture of tomato