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  • 1
    Electronic Resource
    Electronic Resource
    Polysaccharide synthesis by capsular microorganisms in coculture with cellulolytic fungi on straw and stabilization of soil aggregates (1985)
    Springer
    Biology and fertility of soils 1 (1985), S. 161-166 
    Details
    ISSN: 1432-0789
    Keywords: Microorganisms ; Polysaccharide ; SoilStabilization ; Straw
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Studies using cocultures of a cellulolytic fungus with a capsular organism show that microbial polysaccharides can be synthesized during the degradation of wheat straw. Polysaccharide accounted for up to 1.6% (w/w) of the initial straw weight but the sugar composition and viscosity indicated that a large fraction was low molecular weight material of plant origin. Nevertheless several cocultures produced sufficient microbial polysaccharide effectively to stabilize aggregates of Hamble silt loam. This correlated significantly with increased viscosity and also stabilization of Mount St. Helens volcanic ash. Four cocultures, Sordaria alcina with two strains of Enterobacter cloacae and a Pseudomonas sp. and Trichoderma harzianum with E. cloacae, were significantly more effective than a natural inoculum from straw. Inoculation of straw to produce a “compost” which can increase the stability of poorly structured soils is suggested.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00301784
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  • 2
    Electronic Resource
    Electronic Resource
    Varietal and fertilizer effects on straw phytotoxins (1986)
    Springer
    Biology and fertility of soils 2 (1986), S. 109-112 
    Details
    ISSN: 1432-0789
    Keywords: Straw ; Phytotoxins ; Acetic Acid ; Wheat ; Barley ; Cultivar ; Nitrogen
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Acetic acid production over 10 days from fresh barley straw was greater than that from fresh wheat straw, but there were only minor consistent differences between different cultivars. The effect depended on the soil type on which the straw had been produced and acid production was greatest with the largest amounts of N fertilizer which had been used. The fertilizer also affected the C:N ratio of the straw
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00257588
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  • 3
    Electronic Resource
    Electronic Resource
    On the concentration of acetic acid in straw and soil (1980)
    Springer
    Plant and soil 56 (1980), S. 93-98 
    Details
    ISSN: 1573-5036
    Keywords: Acetic acid ; Barley ; Diffusion ; Silt loam ; Straw ; Water absorption ; Wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Freshly harvested wheat straw contained 0.096 g water g−1 dry straw and 180 mM acetic acid. The straw absorbed water more rapidly from wet soil. The concentration of acetic acid fell to about 10 mM within 6 h of incorporation of straw in the soil and then remained relatively constant for a period of 12 days, irrespective of soil moisture content. In soil at its maximum water holding capacity after gravitational drainage, the decline in acetic acid concentration (c) with distance (d) from wheat or barley straw was exponential, with c=co e−nd where co is the concentration of acetic acid at the straw surface and n is a constant (0.46 for barley and 0.42 for wheat straw). The presence of acetic acid seems to be a major cause of poor establishment and growth when seeds and seedling roots come into contact with straw.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02197956
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  • 4
    Electronic Resource
    Electronic Resource
    The role of water-soluble components in phytotoxicity from decomposing straw (1982)
    Springer
    Plant and soil 65 (1982), S. 11-17 
    Details
    ISSN: 1573-5036
    Keywords: Acetic acid ; Hot water-soluble components ; Phytotoxins ; Straw
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary When seedling development is slowed by the presence of straw in wet seed-beds both microbial products and compounds of plant origin contribute to phytotoxicity. Hot (100°C) water-soluble extracts from fresh straw contained phytotoxic substances but these accounted for less of the phytotoxicity than the microbial products, primarily acetic acid, from anaerobic fermentation of the insoluble straw polysaccharides (cellulose and hemicelluloses). The water-soluble components however also included mineral salts required in the decomposition of these polysaccharides.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02376798
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