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    Wyświetlanie 1-2 z 2
    Tytuł:
    Effect of Population Density and Spatial Arrangements of Pigeon pea (Cajanus cajan L. Millsp) on Productivity of Maize-Pigeon pea Intercropping
    Autorzy:
    Merkeb, Fitsum
    Powiązania:
    https://bibliotekanauki.pl/articles/1182881.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    LER
    Maize
    Pigeon pea
    monetary return
    population density
    spatial arrangement
    Opis:
    A field experiment was conducted to determine the effect of pigeon pea spatial arrangement and population density on the productivity of maize-pigeon pea intercropping. Treatments were consisted of two pigeon pea spatial arrangements and three population densities of pigeon pea using randomized complete block design with three replications. Spatial arrangement and population densities had significant influence on pigeon pea grain yield. Higher grain yield was obtained from the highest pigeon pea plant population density and 1:2 spatial arrangement (3.90 t/ha, 0.73 t/ha for maize and 3.74 t/ha, 0.75 t/ha for pigeon pea). Number of seeds/cob and biomass yield of maize were not significantly affected by pigeon pea spatial arrangement and population densities. The interaction effect of pigeon pea spatial arrangement and population density had a significant effect on maize biomass yield. The highest interaction effect on biomass yield was obtained from the lowest pigeon pea population density with 1:2 arrangements. Land use efficiency and monetary return was increased by increasing plant density and pigeon pea rows. Total LER of 1.16 and 1.24 was received from 1:2 and 250,000 plants ha-1. Under pigeon pea spatial arrangement of 1:2 and population density of 125,000 and 250,000 plants ha-1 maize-pigeon pea intercropping was found to be advantageous. The highest monetary return was also obtained from these treatments of 1:2 and 250,000 plants ha-1(28185 ETB ha-1 and 28106 ETB ha-1). Intercropping maize-pigeon pea gave a gross monetary advantage of 75% and 21% of their respective sole crops of maize and pigeon pea.
    Źródło:
    World Scientific News; 2016, 53, 3; 216-229
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bioethanol production from agro waste – Pigeon pea (Cajanus cajan (L.) Millsp.) stalk using solid state fermentation
    Autorzy:
    Kirti, Kirti
    Patil, Ravikumar S.
    Londonkar, Ramesh L.
    Powiązania:
    https://bibliotekanauki.pl/articles/1076037.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Aspergillus niger
    Bioethanol
    Cajanus cajan
    Pigeon pea
    Saccharomyces cerevisiae
    agro waste
    biomass
    lignocellulose
    Opis:
    In view of raising prices of crude oil and due to increasing demands the need for alternative sources of bioenergy is expected to increase sharply in the coming years. Cajanus cajan Stalks is the major agricultural residue, more than 25% primary energy demands met through imports mainly in the form of crude oil and natural gas. Biofuels as a domestic renewable energy source can significantly reduce India’s dependence on foreign oil and fossil fuels. The Plant cell wall is a composite material in which cellulose, hemicelluloses & lignin are closely associated. The major constraint in successful bioconversion process is the lignin. The study was conducted for various pretreatment methods. The best is the steam pretreatment method. This method serves as best and effective pretreatment with the maximum removal of lignin and isolation of more reducing sugars and less pentose’s. The alkaline method specially NaOH treatment is used for extraction of more pentose’s in crude extract. Finally, our approach was to find out the best pretreatment method that result in release of maximum reducing sugars. Steam pretreatment serves to be best followed by saccharification by cellulose. Further, these fermentable sugars can be utilized for bioethanol production. Cajanus cajan stalk is mostly cultivated in Kalaburagi district of Karnataka for that can be used for ethanol production. Screening for isolation of S. cereviceae was carried out by using baker’s yeast and was grown in YPD media. The optimization of culture condition was carried out for growth of yeast showed optimum temperature at 30 ºC and optimum pH at 5. Optimum Cellulase enzyme activity was found to be at temperature 40 ºC and pH 4.5. The ethanol production reaction was optimized by the maximum utilization of sugars by yeast was optimized by providing hexose and with combination of xylose at temperature 30 ºC and pH 5.0 and the inoculum size was optimized at 5% volume of total volume for SSF. From the above results, it is clear that the cellulase enzyme isolated from Aspergillus niger has ability to grow and produce hexoses under conditions of optimum temperature and acidic pH. The reducing sugar and pentose’s both can be used together for ethanol production. The obtained reducing sugar and pentose’s sugar conc. were 1.025 gm/500 ml & 0.5 gm/500 ml. This is only possible by using biological enzymatic pretreatment. The resultant substrate can used for making 2-3% ethanol. Thus fermentable sugars by these methods can be utilized for bioethanol production. The ethanol produced from this agro waste is 2-3% in lab scale. Then go for pilot scale 4-5% and later for industrial scale 7-8% by treat with different pretreatment methods using SSF. This helps in increases the utilization of wastes for economic use and improves the biofuel production resources.
    Źródło:
    World Scientific News; 2019, 117; 59-81
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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