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Flowering dynamics of peach-leaved bellflower (Campanula persicifolia L.) 'Alba' treated with bioregulators, grown in an unheated plastic tunnel and in field

100%

Pogroszewska E., Sadkowska P.

Acta Agrobotanica

2008

tom 61

nr 2

The effect of BA, GA3 and BA+GA3 on fl owering of peach-leaved bellfl ower (Campanula persicifolia L.) ‘Alba’, grown in an unheated plastic tunnel or in open fi eld, was investigated. Bioregulators at the following applications: 0, 100, 200, 400 mg x dm-3, were applied foliarly twice. It has been found that the cultivation of peach-leaved bellfl ower in an unheated plastic tunnel accelerates flowering of plants by about 2 – 3 weeks, compared to open field cultivation, in the fi rst and second year of fl owering of plants. It is advisable to apply gibberellic acid at a concentration of 400 mg x dm-3 in plastic tunnel cultivation of bellfl ower and at a concentration of 200 mg x dm-3 in field cultivation, since this treatment accelerates flowering by 2 – 9 days. It is recommended that gibberellic acid should be applied at a concentration of 400 mg x dm-3, which extends the fl owering period of peach-leaved bellfl ower grown in a plastic tunnel by 6 – 13 days. When peach-leaved bellfl ower is grown in an unheated plastic tunnel, full fl owering is predicted to occur in the fi rst or second week from the beginning of fl owering of plants. When bellfl ower is grown in open fi eld, full bloom of infl orescences is expected in the second week of flowering of plants. Irrespective of the type of substance applied in both years of cultivation, in the unheated plastic tunnel the largest amount of inflorescences was ready for cutting in the first decade of June, and in the field in the second decade of June.

Ograniczanie wyników

1 Acta Agrobotanica

1 Pogroszewska E.

1 Sadkowska P.

1 2008

Wyniki wyszukiwania

Flowering dynamics of peach-leaved bellflower (Campanula persicifolia L.) 'Alba' treated with bioregulators, grown in an unheated plastic tunnel and in field