Avaldamisel
Avaldamisel artiklid on retsensentide poolt aktsepteeritud artiklid, mis on publitseeritud elektrooniliselt käsikirja vormis, kuid mida pole küljendatud ja mis pole veel ilmunud ajakirja korralises väljaandes. Küljendamine võib põhjustada väikeseid erinevusi võrreldes avaldamisel oleva artikliga, seetõttu võivad publikatsiooni ettevalmistamise käigus muutuda nii pealkiri kui ka sisu.
EFFECT OF WATER DEFICIT ON THE GROWTH AND YIELD OF DIFFERENT GENOTYPES OF TOMATO IN SEMI-ARID CLIMATE CONDITIONS
InPress
EFFECT OF WATER DEFICIT ON THE GROWTH AND YIELD OF DIFFERENT GENOTYPES OF TOMATO IN SEMI-ARID CLIMATE CONDITIONS
Aziz Mahdi Abd Al-Shammari, Ghassan Jaafar Hamdi
Department of Horticulture and Landscape Gardening, College of Agriculture, University of Diyala, 32001, Baqubah, Iraq
In areas where the supply of water for irrigation is limited, tomato production is often subject to drought stress. This study was conducted at the Department of Horticulture and Landscape Gardening, University of Diyala, Baqubah, Iraq in 2021 wherein 22 genotypes ('S.G', 'San II', 'M.O', 'Red Pear', 'F.R', 'Marb', 15 F1 hybrids were obtained from 6×6 half diallel cross and 'Bobcat' control hybrid) were cultivated under full irrigation [covering 100% of crop evapotranspiration demands (ETc)] and water deficit (50% of ETc) conditions. The results showed that cv. 1×6 produced the longest plants (119.01 cm) and the least time to flowering (10.23 days). Most branches (31.98) were produced by cv. 5×6. Both cvs. 1×6 and 5×6 produced the most leaf area (1 991 and 1 977 cm2 respectively) and most yield per plant (6.75 and 6.84 kg respectively). The 100% ETc irrigation treatment produced the longest plants (91.21 cm), the greatest number of branches (28.12), the most leaf area (1 673 cm2), and the highest plant yield (4.61 kg). The 50% ETc irrigation treatment produced the least time to flowering (13.7 days). Irrigation level lowering to 50% ETc achieved good results for the water use efficiency (WUE) use with predicted R2 = 1.00. Therefore, the results of this study recommend using the interaction of (both cvs. 1×6 and 5×6 irrigated with the 50% ETc treatment) to save water on irrigation and produce a high yield of tomatoes.
Keywords: Solanum lycopersicum, breeding, cultivar, water stress, yield.
Source: Agraarteadus, 2022, 33(2):In Press
DOI: https://dx.doi.org/10.15159/jas.22.29
Aziz Mahdi Abd Al-Shammari, Ghassan Jaafar Hamdi Department of Horticulture and Landscape Gardening, College of Agriculture, University of Diyala, 32001, Baqubah, Iraq
In areas where the supply of water for irrigation is limited, tomato production is often subject to drought stress. This study was conducted at the Department of Horticulture and Landscape Gardening, University of Diyala, Baqubah, Iraq in 2021 wherein 22 genotypes ('S.G', 'San II', 'M.O', 'Red Pear', 'F.R', 'Marb', 15 F1 hybrids were obtained from 6×6 half diallel cross and 'Bobcat' control hybrid) were cultivated under full irrigation [covering 100% of crop evapotranspiration demands (ETc)] and water deficit (50% of ETc) conditions. The results showed that cv. 1×6 produced the longest plants (119.01 cm) and the least time to flowering (10.23 days). Most branches (31.98) were produced by cv. 5×6. Both cvs. 1×6 and 5×6 produced the most leaf area (1 991 and 1 977 cm2 respectively) and most yield per plant (6.75 and 6.84 kg respectively). The 100% ETc irrigation treatment produced the longest plants (91.21 cm), the greatest number of branches (28.12), the most leaf area (1 673 cm2), and the highest plant yield (4.61 kg). The 50% ETc irrigation treatment produced the least time to flowering (13.7 days). Irrigation level lowering to 50% ETc achieved good results for the water use efficiency (WUE) use with predicted R2 = 1.00. Therefore, the results of this study recommend using the interaction of (both cvs. 1×6 and 5×6 irrigated with the 50% ETc treatment) to save water on irrigation and produce a high yield of tomatoes.
Keywords: Solanum lycopersicum, breeding, cultivar, water stress, yield.
Source: Agraarteadus, 2022, 33(2):In Press
DOI: https://dx.doi.org/10.15159/jas.22.29
Highlights:
- Deficit irrigation positively affects water use efficiency.
- High-yielding genotypes are more sensitive to deficit irrigation strategies.
- All tomato genotypes showed different behaviour in response to water stress.
- The Genotypes strategy led to reduced water use in tomatoes.
IMPACTS OF WATER AVAILABILITY AND PLANT DENSITY ON MORPHO-PHYSIOLOGICAL CHARACTERISTICS OF FENUGREEK (Trigonella foenum-graecum)
InPress
IMPACTS OF WATER AVAILABILITY AND PLANT DENSITY ON MORPHO-PHYSIOLOGICAL CHARACTERISTICS OF FENUGREEK (Trigonella foenum-graecum)
Mojtaba Hassanzadehdelouei, Ahad Madani, Alireza Bakhshi
Department of Agronomy, Islamic Azad University, Gonabad Branch, University Street, Basij Square, 9691655675, Gonabad, Khorasan E Razavi, Iran
Plant density and water availability are the most important factors determining the yield of crops and medicinal plants. To investigate the effect of these two factors and their interaction on the yield and morpho-physiological characteristics of fenugreek, an experiment was conducted in the form of split plots based on a randomized complete block design (RCBD) with three replications in 2020. Water availability (favourable conditions, mild stress and severe stress) were placed in main plots and plant densities (22, 44 and 66 plants m2 –1) were placed in subplots. The results showed a three-fold increase in plant density under optimal moisture conditions increased grain yield from 998 to 1 380 kg ha–1 and biological yield from 2 600 to 3 259 kg ha–1, respectively, while in mild and severe water stress, did not affect grain yield and biological yield. In all three moisture conditions, a 3-fold increase in plant density reduced the number of seeds per pod and a 2-fold increase in plant density reduced the number of pods per plant. Although in some crops, the increase in density under water stress conditions can compensate for the decrease in yield, in fenugreek, the increase in density under water stress conditions was not beneficial for the plant. Increasing the density to medium (44 plants m2 –1) reduces the source strength and applying high density through sink restriction causes a decrease in yield. On the other hand, moisture limitation by reducing the number of pods per plant, the number of seeds per pod and the number of seeds per plant reduced the size of the sink and the mass of 1 000 seeds, which indicates the strength of the source, was not affected.
Keywords: water stress, plant competition, medicinal plants, density, fenugreek.
Source: Agraarteadus, 2022, 33(2):In Press
DOI: https://dx.doi.org/10.15159/jas.22.28
Mojtaba Hassanzadehdelouei, Ahad Madani, Alireza Bakhshi Department of Agronomy, Islamic Azad University, Gonabad Branch, University Street, Basij Square, 9691655675, Gonabad, Khorasan E Razavi, Iran
Plant density and water availability are the most important factors determining the yield of crops and medicinal plants. To investigate the effect of these two factors and their interaction on the yield and morpho-physiological characteristics of fenugreek, an experiment was conducted in the form of split plots based on a randomized complete block design (RCBD) with three replications in 2020. Water availability (favourable conditions, mild stress and severe stress) were placed in main plots and plant densities (22, 44 and 66 plants m2 –1) were placed in subplots. The results showed a three-fold increase in plant density under optimal moisture conditions increased grain yield from 998 to 1 380 kg ha–1 and biological yield from 2 600 to 3 259 kg ha–1, respectively, while in mild and severe water stress, did not affect grain yield and biological yield. In all three moisture conditions, a 3-fold increase in plant density reduced the number of seeds per pod and a 2-fold increase in plant density reduced the number of pods per plant. Although in some crops, the increase in density under water stress conditions can compensate for the decrease in yield, in fenugreek, the increase in density under water stress conditions was not beneficial for the plant. Increasing the density to medium (44 plants m2 –1) reduces the source strength and applying high density through sink restriction causes a decrease in yield. On the other hand, moisture limitation by reducing the number of pods per plant, the number of seeds per pod and the number of seeds per plant reduced the size of the sink and the mass of 1 000 seeds, which indicates the strength of the source, was not affected.
Keywords: water stress, plant competition, medicinal plants, density, fenugreek.
Source: Agraarteadus, 2022, 33(2):In Press
DOI: https://dx.doi.org/10.15159/jas.22.28
Highlights:
- Water stress mainly by reducing the sink size and partitioning efficiency of dry matter to grain (harvest index) has reduced grain yield in fenugreek and has less correlation with biological yield and dry matter production efficiency.
- It seems that planting the fenugreek medicinal plant in the agricultural system at a density higher than the natural habitat can be a kind of imposition of density on the plant, which is aggravated in the conditions of drought stress and it is necessary to pay more attention to this issue in research.
- Increasing plant density, first by reducing source strength due to shading, and then by further increasing plant density through sink size restriction, leads to reduced individual seed yield.
Although in some crops, the increase in density under water stress conditions can compensate for the decrease in yield, in fenugreek, the increase in density under water stress conditions was not beneficial for the plant.- Under optimal irrigation conditions and mild stress, there was no difference in chlorophyll fluorescence between different densities, while at severe water stress, high density had a significantly lower chlorophyll fluorescence than low density.
Ihor Kovalenko1, Sergey Butenko1, Anatoly Zhezhkun2, Ihor Porokhniach2, Ozodbek Abduraimov3, Hanna Klymenko1 TRENDS IN THE TRANSFORMATION OF PLANT ONTOGENESIS UNDER GLOBAL CLIMATE WARMING
InPress
TRENDS IN THE TRANSFORMATION OF PLANT ONTOGENESIS UNDER GLOBAL CLIMATE WARMING
Ihor Kovalenko1, Sergey Butenko1, Anatoly Zhezhkun2, Ihor Porokhniach2, Ozodbek Abduraimov3, Hanna Klymenko1
1Sumy National Agrarian University, 160 H. Kondratieva St., Sumy, Ukraine
2Novgorod-Siversk Forest Research Station, 90 Ivana Bohuna St., Novgorod-Siverskyi, Chernihiv region, Ukraine
3Institute of Botany Academy Sciences Republic of Uzbekistan, 32 Durmon yuli St., 100125, Tashkent, Uzbekistan
Observations of the process of ontogenesis in a group of woody plants and forest grass in the phytocenoses of the Ukrainian Polesie of Sumy region with their division into boreal and nemoral species were done. Found that in the last two decades, nemoral plant species begin vegetation earlier and pass the first phases of the ontogenetic cycle faster than boreal species. Changes in plant ontogenesis, in turn, lead to changes in the population characteristics of plant species: the number of individuals in the population, the size and configuration of the population field and the ontogenetic and vital spectra of populations changed. There has been a tendency to regular changes in the ontogenetic spectra of both nemoral and boreal plant species, but their nature was different. In nemoral plant species, the proportion of juvenile and immature individuals in the ontogenetic spectra increased and populations acquired the character of invasive, reflecting the process of progressive strengthening of their position in phytocenoses. In populations of boreal species, on the contrary, the ageing process accelerated – the proportion of old generative, senile and subsenile individuals increased.
Keywords: climate change, forest ecosystems, phytocenoses, ontogenetic spectrum, plant populations.
Source: Agraarteadus, 2022, 33(2):In Press
DOI: https://dx.doi.org/10.15159/jas.22.27
Ihor Kovalenko1, Sergey Butenko1, Anatoly Zhezhkun2, Ihor Porokhniach2, Ozodbek Abduraimov3, Hanna Klymenko1 1Sumy National Agrarian University, 160 H. Kondratieva St., Sumy, Ukraine
2Novgorod-Siversk Forest Research Station, 90 Ivana Bohuna St., Novgorod-Siverskyi, Chernihiv region, Ukraine
3Institute of Botany Academy Sciences Republic of Uzbekistan, 32 Durmon yuli St., 100125, Tashkent, Uzbekistan
Observations of the process of ontogenesis in a group of woody plants and forest grass in the phytocenoses of the Ukrainian Polesie of Sumy region with their division into boreal and nemoral species were done. Found that in the last two decades, nemoral plant species begin vegetation earlier and pass the first phases of the ontogenetic cycle faster than boreal species. Changes in plant ontogenesis, in turn, lead to changes in the population characteristics of plant species: the number of individuals in the population, the size and configuration of the population field and the ontogenetic and vital spectra of populations changed. There has been a tendency to regular changes in the ontogenetic spectra of both nemoral and boreal plant species, but their nature was different. In nemoral plant species, the proportion of juvenile and immature individuals in the ontogenetic spectra increased and populations acquired the character of invasive, reflecting the process of progressive strengthening of their position in phytocenoses. In populations of boreal species, on the contrary, the ageing process accelerated – the proportion of old generative, senile and subsenile individuals increased.
Keywords: climate change, forest ecosystems, phytocenoses, ontogenetic spectrum, plant populations.
Source: Agraarteadus, 2022, 33(2):In Press
DOI: https://dx.doi.org/10.15159/jas.22.27
Highlights:
- Observations of the process of ontogenesis in a group of woody plants and forest grass in the phytocenoses of the Ukrainian Polesie of Sumy region with their division into boreal and nemoral species were done.
- Found that in the last two decades, nemoral plant species begin vegetation earlier and pass the first phases of the ontogenetic cycle faster than boreal species.
- Changes in plant ontogenesis, in turn, lead to changes in the population characteristics of plant species: the number of individuals in the population, the size and configuration of the population field and the ontogenetic and vital spectra of populations changed.
- Forest ecosystems are characterized by two processes: change in the floral composition of plant species that form the grass-subshrub layer and change in the composition of forest-forming tree species.
- As a result of these processes, against the background of the loss of competitive advantages, a trend of general nemoralization of forest phytocenoses of Polesie with changes in their floral composition is formed in the group of boreal species.
Uliana Karbivska 1, Yevheniia Butenko 2, Valentyna Nechyporenko 2, Olena Shumkova 2, Viktoriia Shumkova 2, Dmytro S. Tymchuk 3, Nataliya Tymchuk 4, Dmytro Litvinov 5, Anna Hotvianska 6, Valentina Toryanik 7 ECOLOGICAL AND ECONOMIC EFFICIENCY OF GROWING ON DARK GRAY SOILS OF BEAN-CEREAL GRASSES
InPress
ECOLOGICAL AND ECONOMIC EFFICIENCY OF GROWING ON DARK GRAY SOILS OF BEAN-CEREAL GRASSES
Uliana Karbivska 1, Yevheniia Butenko 2, Valentyna Nechyporenko 2, Olena Shumkova 2, Viktoriia Shumkova 2, Dmytro S. Tymchuk 3, Nataliya Tymchuk 4, Dmytro Litvinov 5, Anna Hotvianska 6, Valentina Toryanik 7
1Vasyl Stefanyk Precarpathian National University, 57 Shevchenko St., Ivano-Frankivsk, 76018, Ukraine
2Sumy National Agrarian University, 160 H. Kondratieva St., Sumy, 40021, Ukraine
3Kharkiv International Medical University, 38 Molochna St., 61001, Kharkiv, Ukraine
4Kharkiv National Medical University, 4 Nauky Ave., 61022, Kharkiv, Ukraine
5National University of Life and Environmental Sciences of Ukraine, 12 Heroyiv Oborony, 03041, Кyiv, Ukraine
6Dnipro State Agrarian and Economic University, 25 Sergey Efremov St., Dnipro, 49600, Ukraine
7Sumy State Pedagogical University named after A.S. Makarenko, 87 Romenska St., Sumy, 40002, Ukraine
The efficiency of growing leguminous and cereal agrophytocenoses (Trifolium pratense and Medicago sativa sown with the addition of Bromus inermis, Lolium multiflorum, Festuca rubra), highlighted their economic and energy advantages over cereal grasses. The article presents the results of the study of the influence of grass mixtures on the main indicators of the efficiency of growing sowing phytocenoses during haymaking in the Carpathians on dark grey soil. Growing agrophytocenoses without mineral fertilizers ensures the maintenance of 370–520 € ha–1 of net profit, with the profitability of 151–187%, the cost of 1 ton of feed units – 56.7–66.7 €, bioenergy coefficient – 2.5–2.9, energy efficiency ratio – 5.8–6.5 and energy consumption per 1 ton of feed units – 4.0–4.7 GJ. The cultivation of alfalfa-cereal grasses is ensured on dark-wet soil with three years of use of the best indicators of economic and energy efficiency. It was found that on both experimental bean-cereal grasses the highest efficiency is maintained when P60K60 is applied in combination with inoculation of seeds of bean strains of nodule bacteria.
Keywords: dark gray soils, bean-cereal grasses, fertilization, profitability, energy efficiency.
Source: Agraarteadus, 2022, 33(2):In Press
DOI: https://dx.doi.org/10.15159/jas.22.25
Uliana Karbivska 1, Yevheniia Butenko 2, Valentyna Nechyporenko 2, Olena Shumkova 2, Viktoriia Shumkova 2, Dmytro S. Tymchuk 3, Nataliya Tymchuk 4, Dmytro Litvinov 5, Anna Hotvianska 6, Valentina Toryanik 7 1Vasyl Stefanyk Precarpathian National University, 57 Shevchenko St., Ivano-Frankivsk, 76018, Ukraine
2Sumy National Agrarian University, 160 H. Kondratieva St., Sumy, 40021, Ukraine
3Kharkiv International Medical University, 38 Molochna St., 61001, Kharkiv, Ukraine
4Kharkiv National Medical University, 4 Nauky Ave., 61022, Kharkiv, Ukraine
5National University of Life and Environmental Sciences of Ukraine, 12 Heroyiv Oborony, 03041, Кyiv, Ukraine
6Dnipro State Agrarian and Economic University, 25 Sergey Efremov St., Dnipro, 49600, Ukraine
7Sumy State Pedagogical University named after A.S. Makarenko, 87 Romenska St., Sumy, 40002, Ukraine
The efficiency of growing leguminous and cereal agrophytocenoses (Trifolium pratense and Medicago sativa sown with the addition of Bromus inermis, Lolium multiflorum, Festuca rubra), highlighted their economic and energy advantages over cereal grasses. The article presents the results of the study of the influence of grass mixtures on the main indicators of the efficiency of growing sowing phytocenoses during haymaking in the Carpathians on dark grey soil. Growing agrophytocenoses without mineral fertilizers ensures the maintenance of 370–520 € ha–1 of net profit, with the profitability of 151–187%, the cost of 1 ton of feed units – 56.7–66.7 €, bioenergy coefficient – 2.5–2.9, energy efficiency ratio – 5.8–6.5 and energy consumption per 1 ton of feed units – 4.0–4.7 GJ. The cultivation of alfalfa-cereal grasses is ensured on dark-wet soil with three years of use of the best indicators of economic and energy efficiency. It was found that on both experimental bean-cereal grasses the highest efficiency is maintained when P60K60 is applied in combination with inoculation of seeds of bean strains of nodule bacteria.
Keywords: dark gray soils, bean-cereal grasses, fertilization, profitability, energy efficiency.
Source: Agraarteadus, 2022, 33(2):In Press
DOI: https://dx.doi.org/10.15159/jas.22.25
Highlights:
- The efficiency of growing leguminous and cereal agrophytocenoses (Trifolium pratense and Medicago sativa sown with the addition of Bromus inermis, Lolium multiflorum, Festuca rubra), highlighted their economic and energy advantages over cereal grasses.
- The best indices of economic and energy efficiency are provided by growing alfalfa-cereal grasslands.
- Among fertilizer variants, the highest indices of economic efficiency are provided with the application of Р60K60 in combination with the use of drugs of appropriate strains of symbiotic nitrogen fixation with net profit and profitability of 360–477 € ha–1 and 85–107% with a cost of 1 ton of fodder units 80–93 €.
Olekasndr Mykhalko 1, Mykola Povod 1, Olga Korzh 1, Tetyana Verbelchuk 2, Serhii Verbelchuk 3, Olena Shcherbyna 4, Halyna Kalynychenko 5, Ludmila Onishenko 5 ANNUAL DYNAMICS OF MICROCLIMATE PARAMETERS OF FARROWING ROOM IN PIGSTY USING TWO DIFFERENT VENTILATION SYSTEMS
InPress
ANNUAL DYNAMICS OF MICROCLIMATE PARAMETERS OF FARROWING ROOM IN PIGSTY USING TWO DIFFERENT VENTILATION SYSTEMS
Olekasndr Mykhalko 1, Mykola Povod 1, Olga Korzh 1, Tetyana Verbelchuk 2, Serhii Verbelchuk 3, Olena Shcherbyna 4, Halyna Kalynychenko 5, Ludmila Onishenko 5
1Sumy National Agrarian University, Department of Feed Technology and Animal Feeding, 160 H. Kondratiiev St., Sumy, Ukraine
2Polissіa National University, Department Livestock Production Technologies of Animal Products, 7 Staryi Blvd., Zhytomyr, Ukraine
3Polissіa National University, Department of Technology of Processing and Quality of Livestock Products, 7 Staryi Blvd., Zhytomyr, Ukraine
4Kherson State Agrarian and Economic University, Department of Processing and Storage Technologies of Agricultural Products, 23 Stritenska St., Kherson, Ukraine
5Mykolayiv National Agrarian University, Department of Technology of Livestock Production, 9 George Gongadze St., Mykolaiv, Ukraine
The study aimed to investigate the valve and geothermal microclimate systems' impact on microclimate indicators in farrowing rooms. In farrowing rooms, where the valve type of ventilation was installed, the temperature in the farrowing room in summer and autumn exceeded the norm by 3.90 and 1.60 °C, respectively. The amplitude of the average values of the annual temperature dynamics at all these measurement points was higher at using valve-type ventilation relative to geothermal, which provided a constant temperature during the year. Humidity during all seasons of the year was optimal with the use of both microclimate systems, but in summer and autumn, it was probably higher during using geothermal ventilation. The content of carbon dioxide reached its highest values in the autumn months with the use of both systems to create a microclimate, but without exceeding the norm. At the same time, its content was probably higher in the summer months in the room for keeping pregnant sows with the geothermal type of ventilation by 400 ppm or 50% (P <0.01). The ammonia content tended to increase in the autumn months in both farrowing rooms, but reached its highest values in the fall, remaining, however, within normal limits. The hydrogen sulfide content did not exceed the optimal values for both farrowing rooms during all seasons without a statistically significant difference between different types of ventilation. In the farrowing rooms where the geothermal ventilation system was used, the highest H2S content was in the winter months, amounting to 3.59 ppm, which is 0.96 ppm or 26.81% (P <0.001) higher than in spring, 0.83 ppm or 23.29% (P <0.001) higher than in summer and 0.26 ppm or 7.44% (P <0.05) higher than in spring.
Keywords: sow, piglet, type of ventilation, den temperature, humidity, gas composition, season.
Source: Agraarteadus, 2022, 33(2):In Press
DOI: https://dx.doi.org/10.15159/jas.22.26
Olekasndr Mykhalko 1, Mykola Povod 1, Olga Korzh 1, Tetyana Verbelchuk 2, Serhii Verbelchuk 3, Olena Shcherbyna 4, Halyna Kalynychenko 5, Ludmila Onishenko 5 1Sumy National Agrarian University, Department of Feed Technology and Animal Feeding, 160 H. Kondratiiev St., Sumy, Ukraine
2Polissіa National University, Department Livestock Production Technologies of Animal Products, 7 Staryi Blvd., Zhytomyr, Ukraine
3Polissіa National University, Department of Technology of Processing and Quality of Livestock Products, 7 Staryi Blvd., Zhytomyr, Ukraine
4Kherson State Agrarian and Economic University, Department of Processing and Storage Technologies of Agricultural Products, 23 Stritenska St., Kherson, Ukraine
5Mykolayiv National Agrarian University, Department of Technology of Livestock Production, 9 George Gongadze St., Mykolaiv, Ukraine
The study aimed to investigate the valve and geothermal microclimate systems' impact on microclimate indicators in farrowing rooms. In farrowing rooms, where the valve type of ventilation was installed, the temperature in the farrowing room in summer and autumn exceeded the norm by 3.90 and 1.60 °C, respectively. The amplitude of the average values of the annual temperature dynamics at all these measurement points was higher at using valve-type ventilation relative to geothermal, which provided a constant temperature during the year. Humidity during all seasons of the year was optimal with the use of both microclimate systems, but in summer and autumn, it was probably higher during using geothermal ventilation. The content of carbon dioxide reached its highest values in the autumn months with the use of both systems to create a microclimate, but without exceeding the norm. At the same time, its content was probably higher in the summer months in the room for keeping pregnant sows with the geothermal type of ventilation by 400 ppm or 50% (P <0.01). The ammonia content tended to increase in the autumn months in both farrowing rooms, but reached its highest values in the fall, remaining, however, within normal limits. The hydrogen sulfide content did not exceed the optimal values for both farrowing rooms during all seasons without a statistically significant difference between different types of ventilation. In the farrowing rooms where the geothermal ventilation system was used, the highest H2S content was in the winter months, amounting to 3.59 ppm, which is 0.96 ppm or 26.81% (P <0.001) higher than in spring, 0.83 ppm or 23.29% (P <0.001) higher than in summer and 0.26 ppm or 7.44% (P <0.05) higher than in spring.
Keywords: sow, piglet, type of ventilation, den temperature, humidity, gas composition, season.
Source: Agraarteadus, 2022, 33(2):In Press
DOI: https://dx.doi.org/10.15159/jas.22.26
Highlights:
- Geothermal ventilation provided more comfortable temperatures during warm seasons.
- Geothermal ventilation maintained higher temperatures in the piglet and sow dens during cold seasons.
- Valve-type ventilation provided more intensive air exchange and, as a result, minimized the content of harmful gases.
- Valve-type ventilation created more comfortable air humidity in spring and summer, and geothermal ventilation in winter and autumn.
MICROBIAL REMEDIATION OF PETROLEUM-POLLUTED SOIL
InPress
MICROBIAL REMEDIATION OF PETROLEUM-POLLUTED SOIL
Pavlo Pysarenko1, Maryna Samojlik1, Anna Taranenko1, Yurii Tsova1, Serhiy Taranenko2
1Department of Agrotechnology and Ecology, Poltava State Agrarian University, 1/3 Skovorody St., Poltava 36003, Ukraine
2Department of Agriculture and Agrochemistry named after V.I. Sazanov, Poltava State Agrarian University, 1/3 Skovorody St., Poltava 36003, Ukraine
The issues of land pollution, restoration, and return of land to agricultural cultivation are today. Especially, this is gaining new relevance in modern conditions of military action on the territory of Ukraine and other countries, which causes the reduction of cultivation areas. Therefore, there is a need for maximum cleaning and restoration of polluted soils to ensure environmental and food security. Petroleum hydrocarbons are classified as major environmental pollutants due to their stability and durability in the environment. The influence of petroleum hydrocarbons is caused by direct toxic activity and by the soil environment transformation. The research aimed: to study the effectiveness of probiotics in the technology of soil cleaning and remediation; evaluate the phytotoxic effect of oil-contaminated soil before and after the application of probiotics; to find the optimal concentration of probiotics for the effective cleaning and remediation of soil. The seedling method was used to evaluate the phytotoxic effect of contaminated soil before and after the application of probiotics. Research results showed an ambiguous impact on Pisum sativum and Avéna satíva at different times after pollution. In the initial phase, polluted soil has no significant influence on Pisum sativum. For Avéna satíva soil, become toxic right away after pollution. Phytotoxic effect of Pisum sativum and Avéna sativa decrease by the indexes of seed emergence, roots length, roots weight, underground part length and ground part weight due to probiotics treatment. The high efficiency of biological remediation by probiotics in comparison with soil cleaning in natural conditions is determined in the experiment. Probiotic concentration 1:10 is the most effective of all studied initial concentrations of pollutants. Reducing probiotic concentration leads to a decrease in the efficiency of soil cleaning from petroleum products.
Keywords: petroleum hydrocarbons, probiotics, Bacillus subtilis, polluted soil, phytotoxic effect, soil remediation.
Source: Agraarteadus, 2022, 33(2):In Press
DOI: https://dx.doi.org/10.15159/jas.22.30
Pavlo Pysarenko1, Maryna Samojlik1, Anna Taranenko1, Yurii Tsova1, Serhiy Taranenko2 1Department of Agrotechnology and Ecology, Poltava State Agrarian University, 1/3 Skovorody St., Poltava 36003, Ukraine
2Department of Agriculture and Agrochemistry named after V.I. Sazanov, Poltava State Agrarian University, 1/3 Skovorody St., Poltava 36003, Ukraine
The issues of land pollution, restoration, and return of land to agricultural cultivation are today. Especially, this is gaining new relevance in modern conditions of military action on the territory of Ukraine and other countries, which causes the reduction of cultivation areas. Therefore, there is a need for maximum cleaning and restoration of polluted soils to ensure environmental and food security. Petroleum hydrocarbons are classified as major environmental pollutants due to their stability and durability in the environment. The influence of petroleum hydrocarbons is caused by direct toxic activity and by the soil environment transformation. The research aimed: to study the effectiveness of probiotics in the technology of soil cleaning and remediation; evaluate the phytotoxic effect of oil-contaminated soil before and after the application of probiotics; to find the optimal concentration of probiotics for the effective cleaning and remediation of soil. The seedling method was used to evaluate the phytotoxic effect of contaminated soil before and after the application of probiotics. Research results showed an ambiguous impact on Pisum sativum and Avéna satíva at different times after pollution. In the initial phase, polluted soil has no significant influence on Pisum sativum. For Avéna satíva soil, become toxic right away after pollution. Phytotoxic effect of Pisum sativum and Avéna sativa decrease by the indexes of seed emergence, roots length, roots weight, underground part length and ground part weight due to probiotics treatment. The high efficiency of biological remediation by probiotics in comparison with soil cleaning in natural conditions is determined in the experiment. Probiotic concentration 1:10 is the most effective of all studied initial concentrations of pollutants. Reducing probiotic concentration leads to a decrease in the efficiency of soil cleaning from petroleum products.
Keywords: petroleum hydrocarbons, probiotics, Bacillus subtilis, polluted soil, phytotoxic effect, soil remediation.
Source: Agraarteadus, 2022, 33(2):In Press
DOI: https://dx.doi.org/10.15159/jas.22.30
Highlights:
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Märkus: Ajakirja nimi andmebaasides on Agraarteadus, seetõttu palume Teil sellele viitamisel seda nii ka nimetada.
Note: Our journal is referred to as Agraarteadus in databases, therefore we kindly ask you to cite it as indicated.
