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  • 1
    Electronic Resource
    Electronic Resource
    Fate of C14-Carbonyl-Labeled Aryl Methylcarbamate Insecticide Chemicals in and on Bean Plants (1966)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 14 (1966), S. 290-298 
    Details
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jf60145a024
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The role of potassium fertilizer in nodulation and nitrogen fixation of faba bean (Vicia faba L.) plants under drought stress (1995)
    Springer
    Biology and fertility of soils 20 (1995), S. 147-150 
    Details
    ISSN: 1432-0789
    Keywords: Faba bean ; Water stress ; Nodulation ; Nitrogen fixation ; Leghaemoglobin ; Invertase ; Protease ; K fertilizer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Three-week-old nodulated faba bean plants were subjected to different levels of drought stress (onehalf, one-quarter, or one-eighth field capacity) for 5 weeks. Half the stressed plants were treated with KCl at 10 mg kg-1 soil or 150 mg kg-1 soil at the beginning of the drought stress. Nodulation and nitrogenase activity were significantly decreased by increasing drought stress. Leghaemoglobin and protein contents of nodule cytosol were also severely inhibited by drought sttess. This decline was attributed to the induction of protease activity. However, carbohydrate contents of the nodule cytosol increased significantly. This accumulation was attributed to a sharp decline in invertase activity and low use of sugar by the bacteroids We conclude that harmful effects of water deficits can be alleviated by increasing K+ supplementation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00336594
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Nitrogen fixation by Bacillus strains isolated from the rhizosphere of Ammophila arenaria (1975)
    Springer
    Plant and soil 42 (1975), S. 703-708 
    Details
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Several Bacillus strains, from the rhizosphere of Ammophila arenaria, appeared on ‘nitrogen-free’ agar plates. They were able to grow in nitrogen-poor medium to which 0.1% yeast extract was added. Three of these bacilli were tested for their ability to fix nitrogen using the acetylene reduction assay. The C2H2-reducing activity was determined at 8-hour intervals during their growth cycle. C2H2 reduction (and accordingly N2 fixation) was greater under anaerobic than aerobic conditions. Additions of 0.1% CaCO3 significantly increased the C2H2-reducing activity under both conditions. Characterisation suggests that these strains are new nitrogen-fixing Bacillus species. re]19740121
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00009953
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  • 4
    Electronic Resource
    Electronic Resource
    Nitrogen-fixing bacillus species from Egyptian soils: Acetylene reduction and cultural conditions (1979)
    Springer
    Plant and soil 51 (1979), S. 187-196 
    Details
    ISSN: 1573-5036
    Keywords: Acetylene reduction ; Aerobic ; Anaerobic ; Bacillus ; Nitrogen fixation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Among 390 isolates from Egytiian soils initially grown on Brown's N-free agar, 15 facultative Bacillus isolates were able to reduce acetylene in Stanier's N-poor broth under both aerobic and anaerobic (N2 atmosphere) conditions. Some of these isolates were Gram-positive, with unswollen sporangia and thin-walled endospores. Other strains were with slightly or definitely bulged sporangia. Yeast extract (0.01%) was essential for growth stimulation and N2[C2H2] fixation by these isolates. Replacing yeast extract with 20 μg/ml (NH4)2SO4 or biotin, thiamine and amino acids (singly or in combination) resulted in stimulation of growth and N2[C2H2] fixation, though at lower rates than in yeast extract. One isolate was able to grow and reduce C2H2 in Stanier's N-free liquid medium. Nitrogenase [C2H2] activity of the anaerobically grown and incubated cultures was greater than aerobic cultures. Addition of 0.1% CaCO3 to the culture media significantly increased and O2 partially inhibited, N2[C2H2] fixation by these Bacillus isolates. Studies of the characteristics and N2[C2H2] fixing activities of these isolates indicate that at least some of them are new nitrogen-fixingBacillus species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02232882
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  • 5
    Electronic Resource
    Electronic Resource
    Effect of different rates of N-fertilizers on nodulation, nodule activities and growth of two field grown cvs. of soybean (1995)
    Springer
    Nutrient cycling in agroecosystems 43 (1995), S. 37-41 
    Details
    ISSN: 1573-0867
    Keywords: Nodulation ; N-fertilizers ; N2-fixation ; nitrate reductase ; soybean
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The effect of N fertilizers on nodulation, nitrogenase, nitrate reductase activities and growth of two cultivars of soybean, Clark and Crauford was evaluated in a field experiment. KNO3 or NH4Cl were applied 27 days after planting at 0,16, 32, 64 and 128 kg N/ha. Nodulation and growth of both cultivars significantly increased when N was applied at low levels whereas specific N2-ase activity (SNA) slightly and insignificantly increased. Cv Crauford showed a greater positive response than cv. Clark. Higher rates of KNO3 and NH4Cl (128 kg N/ha) significantly depressed nodulation and SNA but slightly decreased the plant dry matter. Cv. Crauford was more tolerant to N fertilizers than cv. Clark. The decline in SNA was ascribed to increased nitrate reductase activity (NRA) and higher accumulation of nitrites in nodule cytosol. NRA and nitrate contents in nodules of cv. Clark were greater than that in cv. Crauford. Results showed that NH4 + is the preferred N source with occasional increases in nodule number and weight. This study provides an evidence for the nodulation and growth variability of soybean cultivars fertilized with different levels of N. The results also suggest that diminishing NRA could contribute to increased N2 fixation and the interaction between NO3 − assimilation and N2 fixation is strongly dependent on the plant cultivar.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00747680
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    Paper (German National Licenses)
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