Browsing by Author "Nowosad, Kamila"

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    Analysis of effects of nitrogen and magnesium fertilization combinations of phenotypic traits of two maize (Zea mays L.) cultivars using multivariate methods
    (Instytut Uprawy Nawożenia i Gleboznawstwa – Państwowy Instytut Badawczy w Puławach) Bocianowski, Jan; Szulc, Piotr; Nowosad, Kamila
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    ANALySIS OF THE VARIABILITy OF INFECTION OF WINTER RyE CULTIVARS By THE FUNGUS PucciNia REcoNdita IN LOWER SILESIA
    (Instytut Uprawy Nawożenia i Gleboznawstwa – Państwowy Instytut Badawczy w Puławach) weber, Ryszard; Bujak, Henryk; Nowosad, Kamila; Gacek, Edward; Kotowicz, Ludwik
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    Assessment of Resistance of Barley Varieties to Diseases in Polish Organic Field Trials
    (MDPI, 2024) Lenartowicz, Tomasz ; Bujak, Henryk; Przystalski, Marcin; Mashevska, Inna; Nowosad, Kamila; Jończyk, Krzysztof; Feledyn-Szewczyk, Beata
    Leaf rust and net blotch are two important fungal diseases of barley. Leaf rust is the most important rust disease of barley, whereas net blotch can result in significant yield losses and cause the deterioration of crop quality. The best and the most environmentally friendly method to control diseases is to cultivate resistant varieties. The aim of the current study was to identify barley varieties with an improved resistance to leaf rust and net blotch in Polish organic postregistration trials conducted in the years 2020–2022. For this purpose, the cumulative link mixed model with several variance components was applied to model resistance to leaf rust and net blotch. It was found that the reference variety Radek was the most resistant to leaf rust, whereas variety Avatar outperformed the reference variety in terms of resistance to net blotch, although the difference between the two varieties was non-significant. In the present study, the use of the cumulative link mixed model framework made it possible to calculate cumulative probabilities or the probability of a given score for each variety and disease, which might be useful for plant breeders and crop experts. Both, the method of analysis and resistant varieties may be used in the breeding process to derive new resistant varieties suitable for the organic farming system.
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    Comparison of spring barley (Hordeum vulgare L.) varieties grown in organic farming conditions: lodging and plant height
    (The Scientific Agricultural Society of Finland, 2025) Lenartowicz, Tomasz; Bujak, Henryk; Przystalski, Marcin; Nowosad, Kamila; Jończyk, Krzysztof; Feledyn-Szewczyk, Beata
    Lodging is one of the main factors influencing yield reduction in both organic and conventional systems. In the organic system, lodging is mainly controlled by selecting varieties with increased resistance to lodging, by regulating sowing density, or by cultivation of varieties of appropriate height. The present study aimed to compare ten varieties tested in the years 2020–2022 in organic trials in terms of plant height and resistance to lodging in two growth phases (milk and harvest). Depending on the analyzed trait, a linear or cumulative link linear mixed model was fitted on plot data. The analyses showed that variety Farmer was the most resistant to lodging in the two growth phases, whereas varieties KWS Vermont and Rubaszek were less resistant to lodging in two growth phases than Farmer, but only at the milk phase, the differences were significant. Furthermore, Radek was the tallest among the tested varieties, whereas Farmer was classified as mid-tall. According to Wricke’s ecovalence coefficient, Bente was the most stable, while Farmer ranked third. Therefore, varieties that are the most resistant to lodging and are the most stable in terms of height, should be promoted for cultivation.
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    Morphological traits in maize cultivars at varied N and Mg fertilization rates
    (Instytut Uprawy Nawożenia i Gleboznawstwa – Państwowy Instytut Badawczy w Puławach) Szulc, Piotr; Nowosad, Kamila; Bocianowski, Jan
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    Relationships between selected traits of maize cultivars differing in leaf blade senescence rates
    (Instytut Uprawy Nawożenia i Gleboznawstwa – Państwowy Instytut Badawczy w Puławach) Bocianowski, Jan; Szulc, Piotr; Nowosad, Kamila; Rybus-Zając, Magdalena
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    Variability of the agronomic characters in different types of cultivars of winter oilseed rape (Brassica napus L.)
    (Instytut Uprawy Nawożenia i Gleboznawstwa – Państwowy Instytut Badawczy w Puławach) Bocianowski, Jan; Liersch, Alina; Nowosad, Kamila; Bartkowiak-Broda, Iwona