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Application of biostimulants influences shoot and root characteristics of seedlings of winter pea (Pisum sativum L.)

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Klimek-Kopyra A., Kliszcz A., Slizowska A., Kot D.

Acta Agrobotanica

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2019

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tom 72

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nr 2

In the cooler regions of Europe, the success of winter pea cultivation depends strongly on proper plant development before winter. Previous research has suggested that plants need to develop short internodes and at least their first two leaves before the arrival of frost. However, this stage of growth is sometimes not reached in the event of late sowing, due to factors such as unpredictable weather conditions or the delayed harvest of a previous crop. An effective solution may be the application of plant growth regulators before the sowing of seeds. The aim of this study was to assess the seedling developmental characteristics of winter pea dependent on biostimulator applications in low temperature conditions (4°C). Seven different winter pea cultivars were treated with three biostimulants: Asahi SL, Kelpak SL, and Primus B. After 21 days of seedling development, basic biometrical characteristics were measured (length and weight of shoots and roots). It was found that ‘Enduro’ and ‘Aviron’ showed greatest root development, regardless of the applied biostimulants. The highest germination was achieved by ‘Aviron’. The efficiency of biostimulators on the cultivars tested was low, although slightly better results were found for Asahi SL in combination with ‘Enduro’ and ‘Aviron’.

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The value of different vegetative indices (NDVI, GAI) for the assessment of yield potential of pea (Pisum sativum L.) at different growth stages and under varying management practices

88%

Klimek-Kopyra A., Zajac T., Oleksy A., Kulig B., Slizowska A.

Acta Agrobotanica

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2018

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tom 71

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nr 1

This research evaluated the NDVI (normalized difference vegetation index) and GAI (green area index) in order to indicate the productivity and developmental effects of Rhizobium inoculants and microelement foliar fertilizer on pea crops. Two inoculants, Nitragina (a commercial inoculant) and IUNG (a noncommercial inoculant gel) and a foliar fertilizer (Photrel) were studied over a 4-year period, 2009–2012. The cultivars chosen for the studies were characterized by different foliage types, namely a semileafless pea ‘Tarchalska’ and one with regular foliage, ‘Klif’. Foliar fertilizer significantly increased the length of the generative shoots and the number of fruiting nodes in comparison to the control, which in turn had a negative impact on the harvest index. Pea seed yield was highly dependent on the interaction between the years of growth and the microbial inoculant, and was greater for ‘Tarchalska’ (4.33 t ha−1). Presowing inoculation of seeds and foliar fertilization resulted in a significantly higher value of GAI at the flowering (3.91 and 3.81, respectively) and maturity stages (4.82 and 4.77, respectively), whereas the value of NDVI was higher for these treatments only at the maturity stage (0.67 and 0.79, respectively). A significantly greater yield (5.0–5.4 t ha−1) was obtained after inoculation with IUNG during the dry years.

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Wpływ entomopatogenicznego grzyba Isaria fumosorosea na plon, elementy plonowania i wskaźniki wegetacyjne bobiku

88%

Krupa M., Kulig B., Ropek D., Witkowicz R., Slizowska A.

Fragmenta Agronomica

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2018

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tom 35

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nr 1

Ograniczanie wyników

2 Acta Agrobotanica

1 Fragmenta Agronomica

3 Slizowska A.

2 Klimek-Kopyra A.

2 Kulig B.

1 Kliszcz A.

1 Kot D.

1 Krupa M.

1 Oleksy A.

1 Ropek D.

1 Witkowicz R.

1 Zajac T.

1 2019

2 2018

Application of biostimulants influences shoot and root characteristics of seedlings of winter pea (Pisum sativum L.)

The value of different vegetative indices (NDVI, GAI) for the assessment of yield potential of pea (Pisum sativum L.) at different growth stages and under varying management practices

Wpływ entomopatogenicznego grzyba Isaria fumosorosea na plon, elementy plonowania i wskaźniki wegetacyjne bobiku