Alicja Niewiadomska - Academia.edu (original) (raw)

Papers by Alicja Niewiadomska

Research paper thumbnail of Efekty stosowania PRP SOL w kukurydzy uprawianej na ziarno

Journal of Research and Applications in Agricultural Engineering, 2013

Research paper thumbnail of Changes in selected chemical properties of soil under maize grown in monoculture for silage as a result of application of aftercrop, straw or natural fertilizers

Journal of Research and Applications in Agricultural Engineering, 2017

Research paper thumbnail of Reaction of winter wheat and spring barley on PRP SOL fertilisation

Journal of Research and Applications in Agricultural Engineering, 2011

Research paper thumbnail of Effect of zinc and iron supply and inoculation with azospirillum on growth of maize and wheat seedlings

Archives of Environmental Protection, 2011

The aim of this study was to determine the effect of different zinc and iron concentrations in cu... more The aim of this study was to determine the effect of different zinc and iron concentrations in culture medium on growth and development of maize and wheat seedlings in terms of their inoculation with bacteria of Azospirillum genus. Maize and wheat in vitro cultures were inoculated, respectively, by strains of Azospirillum lipoferum and Azospirillum brasilense strains. The experimental factor was the supplementation of the culture medium with zinc (25, 200 and 600 mg·kg-1 of the medium) and iron (25, 200 and 600 mg·kg-1 of the medium). Counts of bacteria from the Azospirillum genus were analysed and plant seedling growth and development as well as the content of chlorophyll in plant leaf blades were monitored. Zinc turned out to reduce strongly numbers of bacteria of the Azospirillum genus. Azospirillum brasilense turned out to be particularly sensitive to elevated levels of this chemical element in the environment. The negative influence of increased quantities of zinc on cereal see...

Research paper thumbnail of Effect of the co-inoculation of lucerne (Medicago sativa l.) with Sinorhizobium meliloti and Herbaspirillum frisingense in relation to the interactions between bacterial strain

Archives of Environmental Protection, 2011

The aim of the performed experiments was to analyse relationships occurring between endophytic ba... more The aim of the performed experiments was to analyse relationships occurring between endophytic bacteria from the Herbaspirillum genus and Sinorhizobium meliloti Bp nodule bacteria and to examine the condition of plants subjected to coinoculation with the above-mentioned strains in in vitro conditions. In experiments examining the impact of Herbaspirillum frisingense on Sinorhizobium meliloti BP, the stimulation of growth of inoculated bacteria from the Sinorhizobium genus was recorded in all three combinations (48-hour culturing, sediment and supernatant). On the other hand, the examination of interactions between the Sinorhizobium meliloti strain and Herbaspirillum frisingense strain revealed that in the case of culture and supernatant, an antagonistic action was recorded. Besides, it was found that such coinoculation exerted a beneficial influence on the process of seed lucerne symbiosis and yielding as confirmed by increased numbers of root nodules, higher nitrogenase activity an...

Research paper thumbnail of Reakcja Pszenicy Ozimej I Jczmienia Jarego Na Nawoenie PRP Sol

Research paper thumbnail of Response of maize to use the PRP SOL and PRP EBV fertilizers

Journal of Research and Applications in Agricultural Engineering, 2016

Research paper thumbnail of Przeżywalność bakterii z rodziny Enterobacteriaceae w kompostach sporządzonych na bazie osadu ściekowego

Research paper thumbnail of Effect of different tillage methods on the nutritional status, yield and quality of sugar beets

Journal of Elementology, 2012

Research paper thumbnail of The Effect of the Nitrogen-Fixing Bacteria and Companion Red Clover on the Total Protein Content and Yield of the Grain of Spring Barley Grown in a System of Organic Agriculture

Research paper thumbnail of Spatial-Temporal Differentiation of Soil Biochemical Parameters and Their Relationship with Nitrogen Resources during the Vegetation Period of Selected Crops

Agriculture

Understanding the spatial–temporal variability of soil enzymatic activity and its relationship wi... more Understanding the spatial–temporal variability of soil enzymatic activity and its relationship with nitrogen (N) resources in the soil and crop yield is crucial in rational management practices of mineral fertilization. The scarcity of comprehensive studies on geostatic analyses of agricultural soils and plant yields, which would take into account both temporal and spatial variability, was the reason for undertaking this research. The aim of this study was to determine the spatial and temporal variability of the activity of soil enzymes, such as acid (PAC) and alkaline (PAL) phosphatases, urease (URE) and protease (PROT), the content of N-NH4 (ammonium ions), N-NO3 (nitrate ions), phosphorus (P), pH, moisture, as well as crop yield on a conventionally managed farmland of 40 ha. During the two-year experiment, soil samples were collected from 37 measurement points. Wheat was the first tested crop, followed by oilseed rape. It was shown that all the tested soil parameters showed tempo...

Research paper thumbnail of Zastosowanie drobnoustrojów o działaniu synergistycznym w procesie biologicznego wiązania azotu

Woda-Środowisko-Obszary Wiejskie, 2017

A-koncepcja B-zestawienie danych C-analizy statystyczne D-interpretacja wyników E-przygotowanie m... more A-koncepcja B-zestawienie danych C-analizy statystyczne D-interpretacja wyników E-przygotowanie maszynopisu F-przegląd literatury

Research paper thumbnail of Impact of Fertilizers on Soil Properties in the Case of Solanum Tuberosum L. During Conversion to Organic Farming

Applied Ecology and Environmental Research, 2017

In organic farming the use of mineral fertilizers is highly restricted; hence biofertilizers are ... more In organic farming the use of mineral fertilizers is highly restricted; hence biofertilizers are often used. The aim of the research was to investigate the effects of different fertilizers on soil microbial communities and enzymatic activity after conventional production. A field with potato cultivation under conversion to an organic system was established. The nitrogen organic fertilizer Bioilsa and two microbial biofertilizers-UGmax and EMwere used. The highest values of dehydrogenase activity (DHA) were observed in the soil where UGmax was used alone. Application of biofertilizers also caused an increase of DHA in variants with Bioilsa fertilizer. The differences in activity of phosphatase in relation to application of different biofertilizers were observed, but it was higher than in variants with Bioilsa. Application of Bioilsa had a positive effect on activity of acid and alkaline phosphatases, but probiotic EM reduced this positive effect. The total number of bacteria and actinobacteria was the highest in EM variants, not fertilized with Bioilsa. In the case of the fungal population no correlation with fertilization was noted. We conclude that biofertilizers can activate the microbial and enzymatic activity of the soil after intensive agriculture production and can neutralize the negative impact on these parameters of nitrogen fertilizer.

Research paper thumbnail of Anaerobic Digestion of Food Waste—A Short Review

Energies

In recent years, growing environmental awareness, the need to reduce greenhouse gas emissions, an... more In recent years, growing environmental awareness, the need to reduce greenhouse gas emissions, and the energy crisis have led many countries to seek alternative energy sources. One of the most promising solutions is biogas production via anaerobic digestion (AD), whose substrate can be organic-rich and easily biodegradable food waste (FW). This waste is a significant part of the global waste problem, and its use for energy production is beneficial to both the environment and the economy. This paper presents important issues concerning the monitoring of the AD process, as well as standard and innovative, for the implementation of this process, technological solutions. The aim of the measures taken to optimise the process is to increase AD efficiency and obtain the highest possible methane content in biogas. Two approaches—pretreatment and anaerobic co-digestion (AcoD)—have been integral to the implementation of AD of food waste for years. They are presented in this paper based on a r...

Research paper thumbnail of Consortia of Plant Growth-Promoting Rhizobacteria and Selected Catch Crops for Increasing Microbial Activity in Soil under Spring Barley Grown as an Organic Farming System

Applied Sciences

In order to protect and remediate soils, organic farming methods have grown in popularity. The ai... more In order to protect and remediate soils, organic farming methods have grown in popularity. The aim of the study was to evaluate the effect of rhizobacteria (Bacillus subtilis, Bacillus amyloliquefaciens, Pseudomonas fluorescens) and catch crops (undersown red clover alone, undersown Italian ryegrass alone and a mixture of clover and ryegrass) on the microbiological activity of the soil under organic spring barley. In 2019–2021, a field experiment was carried out on an organic farm, randomly in eight variants, each in three repetitions. The following parameters were analyzed: enzymatic activity of dehydrogenases (DHA), acid phosphatase (PAC) and catalase (CAT), soil fertility index (BIF), and a number of selected physiological groups of microorganisms (molds, bacteria, and actinomycetes). Compared to the control variant (without catch crops and bacteria), the values of DHA, CAT, and BIF increased significantly in the variant in which rhizobacteria and catch crops were used simultaneo...

Research paper thumbnail of Quantitative and Qualitative Changes in the Genetic Diversity of Bacterial Communities in Anaerobic Bioreactors with the Diatomaceous Earth/Peat Cell Carrier

Cells

This paper analyses the impact of the diatomaceous earth/peat (DEP; 3:1) microbial carrier on cha... more This paper analyses the impact of the diatomaceous earth/peat (DEP; 3:1) microbial carrier on changes in the bacterial microbiome and the development of biofilm in the anaerobic digestion (AD) of confectionery waste, combined with digested sewage sludge as inoculum. The physicochemical properties of the carrier material are presented, with particular focus on its morphological and dispersion characteristics, as well as adsorption and thermal properties. In this respect, the DEP system was found to be a suitable carrier for both mesophilic and thermophilic AD. The evaluation of quantitative and qualitative changes in the genetic diversity of bacterial communities, carried out using next-generation sequencing (NGS), showed that the material has a modifying effect on the bacterial microbiome. While Actinobacteria was the most abundant cluster in the WF-control sample (WF—waste wafers), Firmicutes was the dominant cluster in the digested samples without the carrier (WF-dig.; dig.—digest...

Research paper thumbnail of Changes in Pisum sativum L. Plants and in Soil as a Result of Application of Selected Foliar Fertilizers and Biostimulators

Agronomy, 2020

The aim of this study was to assess the effect of selected biostimulators and foliar fertilizers ... more The aim of this study was to assess the effect of selected biostimulators and foliar fertilizers on plant development, plant yield, soil fertility and soil biochemical activity (dehydrogenases, phosphatases, catalases) during the cultivation of pea (Pisum sativum L.). A field experiment was conducted between 2016 and 2018 at the Gorzyń Experimental and Educational Station, Poznań University of Life Sciences in Poland. The following treatments were tested: (1) control; (2) Titanit; (3) Optysil; (4) Metalosate potassium; (5) Rooter; (6) Bolero Mo; (7) Adob Zn IDHA; (8) Adob B and (9) Adob 2.0 Mo. Adob Zn IDHA stimulated yields, especially under average moisture conditions and less so in drought conditions, and the differences compared to control amounted 8.36 and 4.3%, respectively. The results showed a close relationship between the effects of the biostimulators and foliar fertilizers and weather conditions during the study. It was not possible to determine whether any of the biostim...

Research paper thumbnail of Ocena aktywności dehydrogenaz w uprawie jęczmienia jarego w zależności od sposobu uprawy roli, przedplonu i rodzaju pozostawionej biomasy

Agronomy Science, 2014

W pracy przedstawiono wyniki 2-letnich badań nad wpływem rodzaju pozostawionej biomasy, przedplon... more W pracy przedstawiono wyniki 2-letnich badań nad wpływem rodzaju pozostawionej biomasy, przedplonu i sposobu uprawy roli pod wysiew jęczmienia jarego na aktywność mikrobiologiczną gleby. Badania przeprowadzono w ZDD Swadzim, należącym do Uniwersytetu Przyrodniczego w Poznaniu. Wykazano, że uprawa jęczmienia jarego w technologii siewu bezpośredniego po burakach pastewnych sprzyjała większej aktywności dehydrogenaz w glebie. System uprawy roli pod wysiew jęczmienia jarego istotnie różnicował aktywność analizowanych enzymów w okresie przed siewem i w fazie krzewienia jęczmienia. Rodzaj pozostawionej biomasy przed wysiewem przedplonów kukurydzy i buraków pastewnych istotnie różnicował aktywność mikrobiologiczną gleby w fazach krzewienia i kwitnienia oraz po zbiorze jęczmienia jarego

Research paper thumbnail of Impact of Microbiological Inoculum on Numbers and Activity of Microorganisms in Peat Substrate and on Growth and Flowering of Scarlet Sage

Polish Journal of Environmental Studies, 2012

The aim of our study was to determine the dynamics of development of select groups of microorgani... more The aim of our study was to determine the dynamics of development of select groups of microorganisms and the activity of dehydrogenases in a substrate containing a microbiological inoculum (BAF1) intended to improve scarlet sage growth and flowering. The material used in the investigations was peat substrate of 5.5-6.0 pH into which plants were planted and then inoculated with different doses of the BAF1 biopreparation (1:10, 1:50, 1:100). Samples of the substrate were collected during the following three phases: seedling planting, vegetative growth, and flowering. The following parameters were determined: developmental dynamics of total bacteria number, actinomycetes, molds (Koch plate method), and dehydrogenases activity (spectrophotometric method). Moreover, plant morphological parameters such as plant height, shoot number and length, number of buds and inflorescences, as well as content of chlorophyll a+b, a, and b, and leaf greenness index (SPAD) were also measured. The applica...

Research paper thumbnail of Organic Substrates for Intensive Horticultural Cultures: Yield and Nutrient Status of Plants, Microbiological Parameters of Substrates

Polish Journal of Environmental Studies, 2012

The aim of our studies was to determine the suitability of organic substrate: peat, coconut fiber... more The aim of our studies was to determine the suitability of organic substrate: peat, coconut fiber with a 20% admixture of chips, and coconut fiber with a 40% admixture of chips (as alternative substrates in relation to rockwool) in intensive horticultural cultures with fertigation adopted as the fertilization method. Tomato was the model plant in this study. Evaluations comprised yielding of plants, contents of macro- and microelements in leaves and fruits, plus changes in the counts of different groups of microorganisms: bacteria, fungi, Actinomycetes, and dehydrogenase activity in the root medium of plants during their vegetation. The significantly highest total yield of plants was found in the case of plants grown in peat and in coconut fiber with a higher (40%) content of chips (9.28 kg·m -2 each) in relation to rockwool (8.35 kg·m -2 ). A similar trend was recorded in the case of commercial yield. Applied substrates significantly modified yielding fruit of grades IVI. Despite t...

Research paper thumbnail of Efekty stosowania PRP SOL w kukurydzy uprawianej na ziarno

Journal of Research and Applications in Agricultural Engineering, 2013

Research paper thumbnail of Changes in selected chemical properties of soil under maize grown in monoculture for silage as a result of application of aftercrop, straw or natural fertilizers

Journal of Research and Applications in Agricultural Engineering, 2017

Research paper thumbnail of Reaction of winter wheat and spring barley on PRP SOL fertilisation

Journal of Research and Applications in Agricultural Engineering, 2011

Research paper thumbnail of Effect of zinc and iron supply and inoculation with azospirillum on growth of maize and wheat seedlings

Archives of Environmental Protection, 2011

The aim of this study was to determine the effect of different zinc and iron concentrations in cu... more The aim of this study was to determine the effect of different zinc and iron concentrations in culture medium on growth and development of maize and wheat seedlings in terms of their inoculation with bacteria of Azospirillum genus. Maize and wheat in vitro cultures were inoculated, respectively, by strains of Azospirillum lipoferum and Azospirillum brasilense strains. The experimental factor was the supplementation of the culture medium with zinc (25, 200 and 600 mg·kg-1 of the medium) and iron (25, 200 and 600 mg·kg-1 of the medium). Counts of bacteria from the Azospirillum genus were analysed and plant seedling growth and development as well as the content of chlorophyll in plant leaf blades were monitored. Zinc turned out to reduce strongly numbers of bacteria of the Azospirillum genus. Azospirillum brasilense turned out to be particularly sensitive to elevated levels of this chemical element in the environment. The negative influence of increased quantities of zinc on cereal see...

Research paper thumbnail of Effect of the co-inoculation of lucerne (Medicago sativa l.) with Sinorhizobium meliloti and Herbaspirillum frisingense in relation to the interactions between bacterial strain

Archives of Environmental Protection, 2011

The aim of the performed experiments was to analyse relationships occurring between endophytic ba... more The aim of the performed experiments was to analyse relationships occurring between endophytic bacteria from the Herbaspirillum genus and Sinorhizobium meliloti Bp nodule bacteria and to examine the condition of plants subjected to coinoculation with the above-mentioned strains in in vitro conditions. In experiments examining the impact of Herbaspirillum frisingense on Sinorhizobium meliloti BP, the stimulation of growth of inoculated bacteria from the Sinorhizobium genus was recorded in all three combinations (48-hour culturing, sediment and supernatant). On the other hand, the examination of interactions between the Sinorhizobium meliloti strain and Herbaspirillum frisingense strain revealed that in the case of culture and supernatant, an antagonistic action was recorded. Besides, it was found that such coinoculation exerted a beneficial influence on the process of seed lucerne symbiosis and yielding as confirmed by increased numbers of root nodules, higher nitrogenase activity an...

Research paper thumbnail of Reakcja Pszenicy Ozimej I Jczmienia Jarego Na Nawoenie PRP Sol

Research paper thumbnail of Response of maize to use the PRP SOL and PRP EBV fertilizers

Journal of Research and Applications in Agricultural Engineering, 2016

Research paper thumbnail of Przeżywalność bakterii z rodziny Enterobacteriaceae w kompostach sporządzonych na bazie osadu ściekowego

Research paper thumbnail of Effect of different tillage methods on the nutritional status, yield and quality of sugar beets

Journal of Elementology, 2012

Research paper thumbnail of The Effect of the Nitrogen-Fixing Bacteria and Companion Red Clover on the Total Protein Content and Yield of the Grain of Spring Barley Grown in a System of Organic Agriculture

Research paper thumbnail of Spatial-Temporal Differentiation of Soil Biochemical Parameters and Their Relationship with Nitrogen Resources during the Vegetation Period of Selected Crops

Agriculture

Understanding the spatial–temporal variability of soil enzymatic activity and its relationship wi... more Understanding the spatial–temporal variability of soil enzymatic activity and its relationship with nitrogen (N) resources in the soil and crop yield is crucial in rational management practices of mineral fertilization. The scarcity of comprehensive studies on geostatic analyses of agricultural soils and plant yields, which would take into account both temporal and spatial variability, was the reason for undertaking this research. The aim of this study was to determine the spatial and temporal variability of the activity of soil enzymes, such as acid (PAC) and alkaline (PAL) phosphatases, urease (URE) and protease (PROT), the content of N-NH4 (ammonium ions), N-NO3 (nitrate ions), phosphorus (P), pH, moisture, as well as crop yield on a conventionally managed farmland of 40 ha. During the two-year experiment, soil samples were collected from 37 measurement points. Wheat was the first tested crop, followed by oilseed rape. It was shown that all the tested soil parameters showed tempo...

Research paper thumbnail of Zastosowanie drobnoustrojów o działaniu synergistycznym w procesie biologicznego wiązania azotu

Woda-Środowisko-Obszary Wiejskie, 2017

A-koncepcja B-zestawienie danych C-analizy statystyczne D-interpretacja wyników E-przygotowanie m... more A-koncepcja B-zestawienie danych C-analizy statystyczne D-interpretacja wyników E-przygotowanie maszynopisu F-przegląd literatury

Research paper thumbnail of Impact of Fertilizers on Soil Properties in the Case of Solanum Tuberosum L. During Conversion to Organic Farming

Applied Ecology and Environmental Research, 2017

In organic farming the use of mineral fertilizers is highly restricted; hence biofertilizers are ... more In organic farming the use of mineral fertilizers is highly restricted; hence biofertilizers are often used. The aim of the research was to investigate the effects of different fertilizers on soil microbial communities and enzymatic activity after conventional production. A field with potato cultivation under conversion to an organic system was established. The nitrogen organic fertilizer Bioilsa and two microbial biofertilizers-UGmax and EMwere used. The highest values of dehydrogenase activity (DHA) were observed in the soil where UGmax was used alone. Application of biofertilizers also caused an increase of DHA in variants with Bioilsa fertilizer. The differences in activity of phosphatase in relation to application of different biofertilizers were observed, but it was higher than in variants with Bioilsa. Application of Bioilsa had a positive effect on activity of acid and alkaline phosphatases, but probiotic EM reduced this positive effect. The total number of bacteria and actinobacteria was the highest in EM variants, not fertilized with Bioilsa. In the case of the fungal population no correlation with fertilization was noted. We conclude that biofertilizers can activate the microbial and enzymatic activity of the soil after intensive agriculture production and can neutralize the negative impact on these parameters of nitrogen fertilizer.

Research paper thumbnail of Anaerobic Digestion of Food Waste—A Short Review

Energies

In recent years, growing environmental awareness, the need to reduce greenhouse gas emissions, an... more In recent years, growing environmental awareness, the need to reduce greenhouse gas emissions, and the energy crisis have led many countries to seek alternative energy sources. One of the most promising solutions is biogas production via anaerobic digestion (AD), whose substrate can be organic-rich and easily biodegradable food waste (FW). This waste is a significant part of the global waste problem, and its use for energy production is beneficial to both the environment and the economy. This paper presents important issues concerning the monitoring of the AD process, as well as standard and innovative, for the implementation of this process, technological solutions. The aim of the measures taken to optimise the process is to increase AD efficiency and obtain the highest possible methane content in biogas. Two approaches—pretreatment and anaerobic co-digestion (AcoD)—have been integral to the implementation of AD of food waste for years. They are presented in this paper based on a r...

Research paper thumbnail of Consortia of Plant Growth-Promoting Rhizobacteria and Selected Catch Crops for Increasing Microbial Activity in Soil under Spring Barley Grown as an Organic Farming System

Applied Sciences

In order to protect and remediate soils, organic farming methods have grown in popularity. The ai... more In order to protect and remediate soils, organic farming methods have grown in popularity. The aim of the study was to evaluate the effect of rhizobacteria (Bacillus subtilis, Bacillus amyloliquefaciens, Pseudomonas fluorescens) and catch crops (undersown red clover alone, undersown Italian ryegrass alone and a mixture of clover and ryegrass) on the microbiological activity of the soil under organic spring barley. In 2019–2021, a field experiment was carried out on an organic farm, randomly in eight variants, each in three repetitions. The following parameters were analyzed: enzymatic activity of dehydrogenases (DHA), acid phosphatase (PAC) and catalase (CAT), soil fertility index (BIF), and a number of selected physiological groups of microorganisms (molds, bacteria, and actinomycetes). Compared to the control variant (without catch crops and bacteria), the values of DHA, CAT, and BIF increased significantly in the variant in which rhizobacteria and catch crops were used simultaneo...

Research paper thumbnail of Quantitative and Qualitative Changes in the Genetic Diversity of Bacterial Communities in Anaerobic Bioreactors with the Diatomaceous Earth/Peat Cell Carrier

Cells

This paper analyses the impact of the diatomaceous earth/peat (DEP; 3:1) microbial carrier on cha... more This paper analyses the impact of the diatomaceous earth/peat (DEP; 3:1) microbial carrier on changes in the bacterial microbiome and the development of biofilm in the anaerobic digestion (AD) of confectionery waste, combined with digested sewage sludge as inoculum. The physicochemical properties of the carrier material are presented, with particular focus on its morphological and dispersion characteristics, as well as adsorption and thermal properties. In this respect, the DEP system was found to be a suitable carrier for both mesophilic and thermophilic AD. The evaluation of quantitative and qualitative changes in the genetic diversity of bacterial communities, carried out using next-generation sequencing (NGS), showed that the material has a modifying effect on the bacterial microbiome. While Actinobacteria was the most abundant cluster in the WF-control sample (WF—waste wafers), Firmicutes was the dominant cluster in the digested samples without the carrier (WF-dig.; dig.—digest...

Research paper thumbnail of Changes in Pisum sativum L. Plants and in Soil as a Result of Application of Selected Foliar Fertilizers and Biostimulators

Agronomy, 2020

The aim of this study was to assess the effect of selected biostimulators and foliar fertilizers ... more The aim of this study was to assess the effect of selected biostimulators and foliar fertilizers on plant development, plant yield, soil fertility and soil biochemical activity (dehydrogenases, phosphatases, catalases) during the cultivation of pea (Pisum sativum L.). A field experiment was conducted between 2016 and 2018 at the Gorzyń Experimental and Educational Station, Poznań University of Life Sciences in Poland. The following treatments were tested: (1) control; (2) Titanit; (3) Optysil; (4) Metalosate potassium; (5) Rooter; (6) Bolero Mo; (7) Adob Zn IDHA; (8) Adob B and (9) Adob 2.0 Mo. Adob Zn IDHA stimulated yields, especially under average moisture conditions and less so in drought conditions, and the differences compared to control amounted 8.36 and 4.3%, respectively. The results showed a close relationship between the effects of the biostimulators and foliar fertilizers and weather conditions during the study. It was not possible to determine whether any of the biostim...

Research paper thumbnail of Ocena aktywności dehydrogenaz w uprawie jęczmienia jarego w zależności od sposobu uprawy roli, przedplonu i rodzaju pozostawionej biomasy

Agronomy Science, 2014

W pracy przedstawiono wyniki 2-letnich badań nad wpływem rodzaju pozostawionej biomasy, przedplon... more W pracy przedstawiono wyniki 2-letnich badań nad wpływem rodzaju pozostawionej biomasy, przedplonu i sposobu uprawy roli pod wysiew jęczmienia jarego na aktywność mikrobiologiczną gleby. Badania przeprowadzono w ZDD Swadzim, należącym do Uniwersytetu Przyrodniczego w Poznaniu. Wykazano, że uprawa jęczmienia jarego w technologii siewu bezpośredniego po burakach pastewnych sprzyjała większej aktywności dehydrogenaz w glebie. System uprawy roli pod wysiew jęczmienia jarego istotnie różnicował aktywność analizowanych enzymów w okresie przed siewem i w fazie krzewienia jęczmienia. Rodzaj pozostawionej biomasy przed wysiewem przedplonów kukurydzy i buraków pastewnych istotnie różnicował aktywność mikrobiologiczną gleby w fazach krzewienia i kwitnienia oraz po zbiorze jęczmienia jarego

Research paper thumbnail of Impact of Microbiological Inoculum on Numbers and Activity of Microorganisms in Peat Substrate and on Growth and Flowering of Scarlet Sage

Polish Journal of Environmental Studies, 2012

The aim of our study was to determine the dynamics of development of select groups of microorgani... more The aim of our study was to determine the dynamics of development of select groups of microorganisms and the activity of dehydrogenases in a substrate containing a microbiological inoculum (BAF1) intended to improve scarlet sage growth and flowering. The material used in the investigations was peat substrate of 5.5-6.0 pH into which plants were planted and then inoculated with different doses of the BAF1 biopreparation (1:10, 1:50, 1:100). Samples of the substrate were collected during the following three phases: seedling planting, vegetative growth, and flowering. The following parameters were determined: developmental dynamics of total bacteria number, actinomycetes, molds (Koch plate method), and dehydrogenases activity (spectrophotometric method). Moreover, plant morphological parameters such as plant height, shoot number and length, number of buds and inflorescences, as well as content of chlorophyll a+b, a, and b, and leaf greenness index (SPAD) were also measured. The applica...

Research paper thumbnail of Organic Substrates for Intensive Horticultural Cultures: Yield and Nutrient Status of Plants, Microbiological Parameters of Substrates

Polish Journal of Environmental Studies, 2012

The aim of our studies was to determine the suitability of organic substrate: peat, coconut fiber... more The aim of our studies was to determine the suitability of organic substrate: peat, coconut fiber with a 20% admixture of chips, and coconut fiber with a 40% admixture of chips (as alternative substrates in relation to rockwool) in intensive horticultural cultures with fertigation adopted as the fertilization method. Tomato was the model plant in this study. Evaluations comprised yielding of plants, contents of macro- and microelements in leaves and fruits, plus changes in the counts of different groups of microorganisms: bacteria, fungi, Actinomycetes, and dehydrogenase activity in the root medium of plants during their vegetation. The significantly highest total yield of plants was found in the case of plants grown in peat and in coconut fiber with a higher (40%) content of chips (9.28 kg·m -2 each) in relation to rockwool (8.35 kg·m -2 ). A similar trend was recorded in the case of commercial yield. Applied substrates significantly modified yielding fruit of grades IVI. Despite t...