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    Wyświetlanie 1-7 z 7
    Tytuł:
    Adverse effects of different humic+fulvic acid levels on biological nitrogen fixation on groundnut
    Autorzy:
    Kirac, G.
    Coskan, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/101392.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
    Tematy:
    biological nitrogen fixation
    peanut
    humic+fulvic acid
    HFA
    Opis:
    Nitrogen is one of the key components of plant production and the nitrogen requirement of the plant supplied either by mineral nitrogen applications or by biological nitrogen fixation. Although the atmosphere contain huge amount of N2, plants are not able to use that as a nitrogen source. Immediately usable forms of nitrogen are nitrate (NO3-) or ammonium (NH4+). The bonds between two nitrogen atoms are quite strong thus, reducing N2 gas to mineral nitrogen forms needs considerable high amount of energy. However, in biological life, microorganisms may convert N2 to mineral nitrogen sources in ambient temperature and pressure; therefore, biological nitrogen fixation is both environmental friendly and sustainable. Industrial nitrogen fixation and mineral fertilization leads both environmental pollution and economic impact. In this research, the effects of humic+fulvic acid (HFA) on nitrogen fixation were evaluated. For this purpose, a pot experiment in controlled environment was carried out. Peanut seeds were sawn in the hole prepared after dual application of HFA doses and rhizobium bacteria. Two times sampling was realized, one in the flowering and the other in harvest time. Results revealed that HFA application was effective on biologic nitrogen fixation; however, increasing HFA doses were adversely influenced determined parameters. Due to the soybean was cultivated as a forecrop at the field where the experimental soil is collected, nodulation was observed even at non-inoculated pots. Nevertheless, the higher values obtained from inoculated plants. Based on the results presented in the paper, HFA was positively effective on a number of parameters evaluated, yet the lower doses should be recommended.
    Źródło:
    Infrastruktura i Ekologia Terenów Wiejskich; 2017, III/2; 1145-1155
    1732-5587
    Pojawia się w:
    Infrastruktura i Ekologia Terenów Wiejskich
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A short review of health benefits and nutritional values of mung bean in sustainable agriculture
    Autorzy:
    Shahrajabian, Mohamad Hesam
    Sun, Wenli
    Cheng, Qi
    Powiązania:
    https://bibliotekanauki.pl/articles/2148498.pdf
    Data publikacji:
    2019-06-30
    Wydawca:
    Instytut Uprawy Nawożenia i Gleboznawstwa – Państwowy Instytut Badawczy
    Tematy:
    mung bean
    traditional chinese medicine
    biological nitrogen fixation
    health benefits
    Opis:
    Mung beans, also known as Lu Dou, are one of the traditional soy foods consumed mainly in East Asia, especially by Chinese and Japanese. It has been used both as nutritional food and herbal medicine. Mung is a valuable plant for sustainable agriculture due to its ability to use atmospheric nitrogen. Because of energy crises and high mineral fertilizer prices cultivation of legumes become one of the most promising strategies for sustainable agriculture. The factors determining the efficiency of symbiotic process are the genetic constitution of the host plant and bacteria, environment, and technological inputs (inoculums, fertilizers and pesticides). Inoculation of mung bean with Bradyrhizobium enhanced nodulation, and results in increasing of shoot biomass and grain yield. The legume residues are also a good source of mineral nitrogen for the succeeding crops. Mungbean is rich in easily digestible protein, it also contains vitamin A, B1, B2, C, niacin, folate, iron, calcium, and zinc. Nutrition therapy on the basis of traditional Chinese medicine (TCM) is quite effective at treating common diseases. The most important health benefits of mung beans are anti-oxidant effects, antifungal and antimicrobial activity, anti-inflammatory activity, activity against diabetes, hypertension and cancer. Mung bean clears heat, detoxifies, reduces swelling, promotes urination, quenches thirst, aids edema in the lower limbs. It is recommended for conjunctivitis, diabetes, dysentery, summer heat, heatstroke, dehydration, edema and food poisoning.
    Źródło:
    Polish Journal of Agronomy; 2019, 37; 31-36
    2081-2787
    Pojawia się w:
    Polish Journal of Agronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of different soil water content on biological nitrogen fixation at soybean
    Autorzy:
    Coskan, A.
    Oz, H.
    Atilgan, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/61204.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
    Tematy:
    soil water content
    biological nitrogen fixation
    soybean
    nitrogen source
    atmosphere
    root nitrogen content
    Opis:
    Biological nitrogen fixation (BNF) is the process that provides organic nitrogenous compounds to the plants by using molecular nitrogen in atmosphere. Higher plants are not capable to use molecular nitrogen in atmosphere as a nitrogen source to generate essential proteins. Therefore plants either should be fertilized by adequate nitrogenous fertilizers or the microorganisms which are capable to produce nitrogenase should provide nitrogen to the plants by BNF. From among a number of factors affecting BNF, soil moisture content and ambient temperatures are considerably effective on the fixation rate. Therefore the global warming would be dramatically defective on BNF, thus effects of soil moisture as well as soil and ambient temperatures on BNF should evaluate prior rising temperature. A pot experiment was carried out to determine the effects of soil water contents on BNF. Four different soil water contents (%25, %50, %75 and %100 of water holding capacity) were adjusted either every 3 days or just after plants indicate wilting point. Non-inoculated pots were added to experiment as a control. The results revealed that BNF is affected by different level of soil water content. The mechanism of this effect would not be the direct effect of water, but the side effect of water on soil oxygen content; therefore, an aeration capability.
    Źródło:
    Infrastruktura i Ekologia Terenów Wiejskich; 2013, 1/III
    1732-5587
    Pojawia się w:
    Infrastruktura i Ekologia Terenów Wiejskich
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The role and future potential of nitrogen fixing bacteria to boost productivity in organic and low-input sustainable farming systems
    Autorzy:
    Cummings, S. P.
    Powiązania:
    https://bibliotekanauki.pl/articles/363186.pdf
    Data publikacji:
    2005
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie
    Tematy:
    zrównoważony system rolniczy
    biologiczne wiązanie azotu
    produktywność
    bakterie diazotroficzne
    sustainable farming system
    organic farming system
    productivity
    biological nitrogen fixation
    BNF
    diazotrophic bacteria
    Opis:
    Biological nitrogen fixation (BNF) results from the interaction between a plant and diazotrophic bacteria. The bacteria are either free living in the soil or live in symbiosis with the plant. Despite biological nitrogen fixation offering a sustainable solution to nitrogen limitation in agricultural soils its use is in decline. Problems with this technology can arise for two major reasons. Firstly, the inappropriate use of diazotrophs with the expectation of achieving N2 fixation. Free-living diazotrophs have been used as inoculants of non-legume crops for many years, however, their mechanism of action remains to be thoroughly characterised. While some may interact with crops to increase available N in soil, many achieve increases in crop yield through the production of plant hormones. This adds nothing to the soil N budget and increases in yields observed are often variable. The second problem occurs when legumes are used to increase soil N in combination with rhizobial symbionts. Frequently poor nodulation of the legumes is observed in the field even when inoculated with .elite. strains of rhizobia. These observations are a consequence of one or more factors, including the use of low quality inoculants, the inability of the rhizobial inoculant to tolerate soil conditions, or their lack of competitiveness for nodule occupancy with indigenous soil rhizobia. These issues can be overcome by the use of more rigorous criteria in inoculant selection and production. The use of inoculants developed from indigenous soil rhizobia offers a tailor made solution to obtaining inoculant strains that are competitive in a particular soil with a specific crop. Here, examples of where this approach has been successful and the potential of this technology to increase the use of BNF in more marginal soils are discussed.
    Źródło:
    Environmental Biotechnology; 2005, 1, 1; 1-10
    1734-4964
    Pojawia się w:
    Environmental Biotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Nod factors improve the nitrogen content and rhizobial diversity of faba bean and alter soil dehydrogenase, protease, and acid phosphomonoesterase activities
    Autorzy:
    Siczek, A.
    Wielbo, J.
    Lipiec, J.
    Kalembasa, S.
    Kalembasa, D.
    Kidaj, D.
    Szarlip, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2082677.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    legume
    rhizobial diversity
    root nodules
    biological
    nitrogen fixation
    soil enzymes
    Opis:
    Nod factors produced by rhizobia are one of the most important signals involved in symbiotic associations involving legumes. A field trial was performed to assess the symbiotic activity, rhizosphere biological parameters, and plant biomass of faba bean (Vicia faba L.) treated with Nod factors. The soil was a Haplic Luvisol derived from loess. The faba bean seeds (cv. Granit) were soaked with an Nod factors solution (260 nM) or water (control) and sown. At the flowering stage, the genetic diversity of rhizobia (based on PCR-RFLP profiles and the sequencing of the 16-23S rDNA and nodD gene), nitrogenase activity (acetylene reduction assay), and nodule biomass were evaluated. Nitrogen yield and plant biomass were determined at the flowering and maturity stages. Rhizosphere soil was examined during plant growth in relation to the activities of dehydrogenase, protease, urease, and acid phosphomonoesterase. The results indicated that the application of the Nod factors improved nitrogenase activity (by 74-80%, depending on the parameter analysed) and increased the genetic diversity of rhizobia inhabiting root nodules, plant nitrogen content (by 16.8%, at maturity), and seed protein yield (by 14.6%). The rhizobial population became more heterogeneous under the influence of the Nod factors than it was for the control (12 and 7 specific genotypes, respectively). At the flowering stage, Nod factors enhanced dehydrogenase, protease, and acid phosphomonoesterase activities by 46, 36 and 9%, respectively. The results revealed the positive effect of Nod factors at reducing water deficiency effects during a growing season with a short-term rainfall deficit.
    Źródło:
    International Agrophysics; 2020, 34, 1; 9-15
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Znaczenie procesu biologicznego wiązania azotu atmosferycznego w rolnictwie ekologiczym
    The importance of biological fixation of atmospheric nitrogen in ecological agriculture
    Autorzy:
    Martyniuk, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/337002.pdf
    Data publikacji:
    2008
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Maszyn Rolniczych
    Tematy:
    azot atmosferyczny
    rolnictwo ekologiczne
    wiązanie biologiczne BWAA
    bakterie
    atmospheric nitrogen
    ecological agriculture
    biological fixation BNF
    bacteria
    Opis:
    Zdolność do biologicznego wiązania azotu atmosferycznego (BWAA) jest do szeroko rozpowszechniona w przyrodzie, ale tylko wśród bakterii - mikroorganizmów prokariotycznych. Proces ten przeprowadzany jest przez różne grupy fizjologiczne bakterii. Pod względem ekologicznym wyróżniane są : wolno żyjące asymilatory N2 występujące w glebie i zbiornikach wodnych (Azotobacter, Clostridium, Nostoc), bakterie wiążące azot w asocjacjach z korzeniami roślin (Azospirillum) oraz bakterie wiążące N2 w ścisłych układach symbiotycznych z roślinami (Rhizobium - rośliny motylkowate, Frankia - olsza). W referacie omówiono ww. systemy BWAA oraz ich przyrodnicze i gospodarcze znaczenie.
    It has been estimated that annually over 100x106 tons of atmospheric nitrogen is introduced into the global nitrogen cycle as a result of biological nitrogen fixation (BNF). Until 90s BNF was the largest source of biologically available nitrogen in the biosphere. The assessments performed in the last decade of the XX century indicate that the amounts of anthropogenically fixed nitrogen exceed those of fixed by the biological process. Ability to fix atmospheric nitrogen is quite common in nature but it occurs only within prokaryotic microorganisms. Different physiological groups of bacteria are engaged in this process. From ecological point of view there are: free-living N2 fixers (Azotobacter, Clostridium, Anabaena, Nostoc), bacteria (Azospirillum) that fix atmospheric N in close associations with roots of some plants and bacteria fixing N2 in symbiotic systems with plants (Rhizobium - legumes or Frankia - alder symbioses). In this review different symbiotic systems have been characterised as well as their ecological and agronomic importance, particularly in organic (ecological) agriculture.
    Źródło:
    Journal of Research and Applications in Agricultural Engineering; 2008, 53, 4; 9-14
    1642-686X
    2719-423X
    Pojawia się w:
    Journal of Research and Applications in Agricultural Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Współżycie endofitów bakteryjnych z roślinami
    Autorzy:
    Klama, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/46520.pdf
    Data publikacji:
    2004
    Wydawca:
    Politechnika Bydgoska im. Jana i Jędrzeja Śniadeckich. Wydawnictwo PB
    Tematy:
    oddzialywanie na rosliny
    rosliny uprawne
    wzrost roslin
    kontrola biologiczna
    wiazanie azotu
    endofity
    bakterie
    agricultural plant
    bacteria
    biological control
    endophyte
    nitrogen fixation
    plant growth
    plant improvement
    Opis:
    W pracy przeanalizowano wpływ bakterii endofitycznych na różne gatunki roślin uprawnych. Przedstawiono sposoby zasiedlania tkanek gospodarza przez zespoły endofitów oraz mechanizmy, za pomocą których oddziałują na rośliny. Oddziaływanie to może mieć charakter bezpośredni – poprzez wytwarzanie różnorodnych stymulatorów wzrostu oraz udostępnianie związanego azotu – lub pośredni, kiedy bakterie odgrywają rolę czynników kontroli biologicznej.
    The study analyses the effect of bacterial endophytes on different crop species. It describes how endophytes live in the host tissues of different plants and how endophytic bacteria affect the plant health status. The effect can be both direct, by producing different plant growth stimulators and making the fixed nitrogen available, or indirect when the bacteria act as biological control agents.
    Źródło:
    Acta Scientiarum Polonorum. Agricultura; 2004, 03, 1; 19-28
    1644-0625
    Pojawia się w:
    Acta Scientiarum Polonorum. Agricultura
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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