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Content of phenolic acids in edible parts of some Alliums species grown for the green bunching

100%

Mysiak B., Tendaj M.

Acta Scientiarum Polonorum. Hortorum Cultus

2008

tom 07

nr 4

Studies carried out in 2003–2005 included determinations of free phenolic acids content in edible parts (shoots, pseudostem) of onion, shallot, and Welsh onion grown for green bunching in the field and forced in the greenhouse. Plants for phenolic acids contents analyses were achieved from setting the small bulbs (common onion, shallot) or annual plants from the seedling setting in the case of Welsh onion. In the field cultivation, plants were grown under short-term covers made of perforated PE film and non-woven PP, while forcing was realized in heated and unheated greenhouse. Free phenolic acids contents were determined after plant harvest, when plants reached the size useful for trading in bunches. Phenolic acids contents were determined in shoots and pseudostem by means of spectrometric Arnova method with recalculation onto caffeic acid. Performed study revealed that shoots contained significantly more free phenolic acids as compared to the pseudostem. Referring to the field cultivation, the component concentration in shoots was 0.23 mg·100 g⁻¹ FW, whereas due to forcing 0.135 mg·100 g⁻¹ FW, on average. Contents of phenolic acids at pseudostems of studied plants from the field cultivation were 0.05 mg·100 g⁻¹ FW, while at forced plants 0.04 mg·100 g⁻¹ FW. No significant differences related to the level of phenolic acids between common onion and shallot were found, both in shoots and pseudostem. However, shoots of Welsh onion contained significantly less phenolic acids, regardless the cultivation place and cover application. The accelerated field cultivation resulted in shoots of Welsh onion was 0.19 mg·100 g⁻¹ FW phenolic acids in FW, whereas the greenhouse forcing 0.11 mg·100 g⁻¹ FW. Regardless the species, forced plants contained considerably less phenolic acids (namely in shoots) as compared to plants grown in the field.

Effect of foliar application of Banana pseudostem Sap on yield of Cowpea (Vigna unguiculata L. Walp.)

80%

Fernando W. S. L. V., Karunarathnaa B.

International Letters of Natural Sciences

2020

tom 79

Improved soil fertility is a requirement for enhanced crop production. Combination of inorganic and organic fertilizers improve crop productivity while reduce environmental degradation. An experiment was carried out at Eastern University, Sri Lanka to study the effect of Foliar Application of Banana Pseudostem Sap on Yield of Cowpea (Vigna unguiculata L. Walp.) in sandy regosol. The experiment was laid out in Randomized Complete Block Design having five treatments viz; recommended inorganic fertilizer N, P, K as basal and N as topdressing (T1), N, P, 1⁄2 K as basal with recommended N as topdressing and foliar spray of 1% , 3%, 5% and 7% banana pseudostem sap solution (T2-T5) at 3rd, 5th, 7th and 9th week after planting. The results revealed that significant difference (P<0.05) were noted on number of pods per plant at 1st and 2nd picking. Higher number of pods per plant, maximum pod length and girth were in T2 while low in T1. Sun dried weights of pods and number of seeds per pod were significantly (P<0.05) varied at each picking. Further, cowpea yield at each picking were higher in T2 compared to tested treatments. The present study suggested that, among the tested treatments N, P, 1⁄2 K as basal with recommended N as topdressing and foliar spray of 1% Pseudostem sap solution at 3rd, 5th, 7th and 9th WAP would be the most suitable for cowpea production in sandy regosol.

Ograniczanie wyników

1 Acta Scientiarum Polonorum. Hortorum Cultus

1 International Letters of Natural Sciences

1 Fernando W. S. L. V.

1 Karunarathnaa B.

1 Mysiak B.

1 Tendaj M.

1 2020

1 2008

Wyniki wyszukiwania

Content of phenolic acids in edible parts of some Alliums species grown for the green bunching

Effect of foliar application of Banana pseudostem Sap on yield of Cowpea (Vigna unguiculata L. Walp.)