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The Impact of Biopreparations and Sowing Dates on the Productivity of Fennel (Foeniculum vulgare Mill.)

Makukha Olga

Journal of Ecological Engineering

2020

Vol. 21, nr 4

237--244

Fennel (Foeniculum vulgare Mill.) is a valuable medicinal and aromatic plant. The introduction of such an ecofriendly element as presowing seeds inoculation with phosphate mobilizing microbial biopreparation into the growing technology is especially important in the cultivation of this crop. It is connected with an extensive use of fennel in the production of medicines, including the remedies for children. Under the moisture deficiency conditions of the southern Steppe of Ukraine, the study on the effectiveness of phosphate mobilizing biopreparations depending on the impact of sowing dates is particularly relevant. Our field experiments were carried out in 2017–2019 in the Kherson region on the dark chestnut soils typical for the southern Steppe of Ukraine. Presowing seeds inoculation with biopreparations of phosphate mobilizing bacteria Albobakteryn and Polimiksobakteryn positively affected the indicators of fennel productivity and yield quality. Among the microbial preparations studied, a preference for Polimiksobakteryn was recorded. The research findings indicate a tendency to lower the quantitative and qualitative indicators of fennel seed yield from early to late sowing. The most favourable conditions for the productive processes of fennel plants and accumulation of essential oil were ensured by the interaction of seeds bacterization with the Polimiksobakteryn biopreparation and early spring sowing at the right soil tilth stage in the third ten-day period of March. In this variant, the yielding capacity was 1.41 t/ha, the weight of 1000 seeds reached 5.61 g, the essential oil content in the seeds amounted to 6.13% in dry matter, the relative yield of essential oil being 76.1 kg/ha. The introduction of microbial preparations of phosphate mobilizing bacteria into the technology of fennel cultivation is a promising environmentally friendly approach to improving the crop productivity.

Plonowanie dwóch odmian ozimych orkiszu pszennego w zależności od terminu i ilości wysiewu w warunkach środkowej Wielkopolski

Sulewska H., Koziara W., Panasiewicz K., Ptaszyńska G.

Journal of Research and Applications in Agricultural Engineering

2008

Vol. 53, nr 4

85-91

W latach 1998-2000 w stacji doświadczalnej ZDD Swadzim należącej do Uniwersytetu Przyrodniczego w Poznaniu, przeprowadzono badania nad wskazaniem optymalnego terminu i gęstości siewu dla dwóch odmian ozimych orkiszu pszennego. W doświadczeniach oceniano wpływ wysiewu orkiszu w I i III dekadzie października w ilościach 200, 300 i 400 kg kłosków ha-1 na plon i komponenty plonowania odmian Bauländer i Schwabenkorn. Wykazano, że w warunkach środkowej Wielkopolski odmiana Schwabenkorn plonowała o 1,6 dt.ha-1 (6,23%) wyżej niż Bauländer. Badane odmiany różnie reagowały na opóźnianie siewu z I do III dekady października. Niżej plonująca odmiana Bauländer nie reagowała istotnymi zmianami plonu na opóźnienie siewu, natomiast Schwabenkorn plonowała istotnie niżej, a spadek plonu wyniósł 6,4 dt.ha-1. Najkorzystniejszym dla plonowania obu odmian orkiszu okazał się wysiew 400 kg kłosków. ha-1. W granicach badanych ilości wysiewu zwiększenie normy o 1 kg. ha-1 prowadziło do przyrostu plonu o 1,85 kg ziarna. ha-1 dla odmiany Bauländer oraz o 2,20 kg ziarna. ha-1 dla odmiany Schwabenkorn.

Field trials have been carried out in experimental station Swadzim belonged to Poznań University of Live Sciences to find out optimum sowing date and sowing rate of two spelt varieties. The influence of two sowing dates (1st and 3rd decade of October) at amount of 200, 300 and 400 kg of spikelets ha-1 has been evaluated on yield and yield components of two varieties Bauländer i Schwabenkorn. It was shown, that in conditions of Wielkopolska region, var. Schwabenkorn has yielded 1,6 dt.ha-1 (6,23%) higher compared with var. Bauländer. Both varieties reacted in different way to delayed sowing date from 1st to 3rd decade of October. Lower yielding variety Bauländer did not react with significant changes of yield, where var. Schwabenkorn yielded significantly less and yield decrease amounted up to 6,4 dt.ha-1. Optimum sowing rate for both varieties was 400 kg spikelets ha-1. Within tested range of sowing rate, increase by 1kg ha-1caused 1,85 kg grain. ha-1 higher yield for var. Bauländer and 2,20 for var. Schwabenkorn respectively.