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Effect of Auxin and Various Iron Concentrations on Medicago × Varia T. Martyn Yield and Forage Quality

Malinowska Elżbieta, Wiśniewska-Kadżajan Beata

Journal of Ecological Engineering

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2024

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Vol. 25, nr 2

250–-256

EN

The aim of the four-year field experiment was to determine the effect of the foliar application of auxin, a synthetic growth hormone, used on its own and in combination with various iron concentrations on the yield and forage quality of Medicago× varia T. Martyn, the Kometa cultivar. The research was conducted in three replications at the experimental facility of Siedlce University (52°10′03”N; 22°17′24”E, Poland) between 2014 and 2017. The treatment combinations were as follows: K – control (distilled water); A – indole-3-butyric acid (IBA - synthetic auxin); A+F1 – auxin (indole-3 butyric acid) with iron (II) sulphate (IV) heptahydrate at 3% concentration; A+F2 – auxin (indole-3 butyric acid (IBA)) with iron (II) sulphate heptahydrate at 5% concentration; A+F3 – auxin (indole-3 butyric acid (IBA) with iron (II) sulphate heptahydrate at 7% concentration. Between 2014 and 2017 hybrid alfalfa was harvested at the beginning of the bud stage, three times a growing season. Each growth cycle, plants were sprayed once at the 9-leaf stage. During a harvest 0.5 kg of fresh matter was collected from each plot to determine the content of aboveground dry matter and to perform chemical analyses. The highest yield, 44% higher than for control plants, was noted on the plot treated with auxin applied together with iron sulphate at 5% concentration, and the lowest on the control plot. Foliar application of auxin with iron improved the quality of alfalfa forage, affecting the content of total and digestible protein and crude fibre and dry matter digestibility.

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The Effects of Various Organic Materials on Dactylis glomerata Yield and Content of Selected Macroelements

Malinowska Elżbieta, Wiśniewska-Kadżajan Beata, Ostaszewska Urszula, Horaczek Tomasz

Journal of Ecological Engineering

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2023

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Vol. 24, nr 7

108--118

EN

The aim of the experiment was to assess the effects of various organic materials on Dactylis glomerata yield, on the content of selected macroelements (K, Ca and Mg) and on K:Ca, K:Mg and K:(Ca + Mg) ratios. As a valuable forage plant, Dactylis glomerata (cocksfoot grass) is a common grass in Poland both in grassland and in arable fields. Its rapid spring growth and its resistance to drought, low temperatures, but also to frequent mowing and pests, makes it a common species in meadows, pastures and grassland, both permanent and alternating. In order to achieve the research goal, a three-year pot experiment was established in a greenhouse. The experiment was conducted in a completely random design, in four replications. In the autumn before the experiment, soil was mixed with organic materials (chicken manure, mushroom substrate and rye straw) and put into pots. To selected units, an additional amount of mineral N was applied in the first year and NPK fertilizers in consecutive years. Mineral fertilizers were applied at the beginning of the growing period. Compared to control, the application of mineral and organic fertilizers resulted in a significant increase in Dactylis glomerata yield. The highest biomass yield (average over the growing periods) was recorded on the unit treated with manure, straw and mineral fertilizers (27.64 g•pot-1) and on the one with mushroom substrate applied together with rye straw and mineral fertilizers (26.47 g•pot-1). The K:(Ca+Mg) ratio in the forage was normal and averaged 0.933, but mineral fertilizers, compared to other treatments, narrowed it.

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The Effect of Soil Conditioners and Weather on Lawn Appearance

Jankowski Kazimierz, Truba Milena, Malinowska Elżbieta, Wiśniewska-Kadżajan Beata

Journal of Ecological Engineering

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2019

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Vol. 20, nr 9

44--52

EN

The aim of this study was to determine the suitability of lawn grasses cultivated in monoculture and fertilizated by soil conditioners to establish lawn grasses used extensively in terms of their impact on the overall aspect. The following grass species were used in the experiment: Lolium perenne, Festuca rubra and Poa pratensis. They were sown on their own, each of them at the rate of 28 g∙m-2. Another experimental factor tested in the research was soil conditioners – Substral, Humus Activ Papka, Eko-Użyźniacz, UG-max. At the end of each growing season, between 2013 and 2015, an assessment of grass was carried out. Among other things its general appearance was assessed using a 9-point rating scale. This assessment was conducted in three seasons: spring, summer, and autumn. The obtained results showed that the lawn appearance ratings varied throughout the research, both in terms of the season, the species of grass, and soil conditioners. This proves that the soil conditioner effects depend on the temperature and moisture conditions, and that there is an interaction between soil conditioners and the weather conditions affecting the grass appearance. The lawn grass species responded strongly to different weather conditions by changing their appearance in different seasons and years.