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Effect of organic-mineral fertilizers on the yield and quality of endive (Cichorium endivia L.)

100%

Gajc-Wolska J., Kowalczyk K., Nowecka M., Mazur K., Metera A.

Acta Scientiarum Polonorum. Hortorum Cultus

2012

tom 11

nr 3

Endive is a leaf vegetable, not commonly known in Poland, although popular in Western and Southern Europe. It deserves attention because of its high nutritive value and bitter taste caused by sesquiterpene lactones. In the experiments carried out in the years 2008–2009 the effect of mineral-organic fertilizers (Goëmar Goteo, Aminoplant) on the yield and quality of curly endive (‘Cigal’) and escarole (‘Excel’) was investigated. Seeds were sown in three periods. After four weeks plants were transplanted into the field. Mineral-organic fertilizers were applied in accordance to the producer’s recommendation: the Goëmar Goteo preparation was used twice for seedlings watering while the Aminoplant preparation was used for plants spraying in the second and third week after transplanting them into the field. Mineral-organic fertilizers did not affect the yield of the investigated cultivars. The highest commercial yield of endive and the highest mean weight of leaf rosette was obtained for the first term of cultivation. Plants in the third term of cultivation characterized with the highest dry matter content. The least amount of nitrates was cumulated in curly endive leaves. The highest content of calcium was observed in the first term of cultivation. The content of potassium and phosphorus was on similar level during the first and the second term of cultivation. The significant effect on the macroelement content due to applied preparations was not observed. The effect of mineral-organic fertilizers on the content of flavonoids was examined. Leaves of endive rosettes treated with mineral-organic fertilizers synthesized rutoside and higher amount of astragalin (3-O-kaempferol glucoside) in comparison with control combination.

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

86%

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.

Ograniczanie wyników

1 Acta Scientiarum Polonorum. Hortorum Cultus

1 Folia Horticulturae

2 Gajc-Wolska J.

2 Kowalczyk K.

2 Mazur K.

2 Metera A.

1 Bujalski D.

1 Hemka L.

1 Nowecka M.

1 2013

1 2012

Wyniki wyszukiwania

Effect of organic-mineral fertilizers on the yield and quality of endive (Cichorium endivia L.)

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