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  • 1950-1954  (6)
  • Geography  (6)
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  • 1950-1954  (6)
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Subjects(RVK)
  • Geography  (6)
RVK
  • 1
    Online Resource
    Online Resource
    The Prevalence of Strains of Rhizobium phaseoli in Some Midwestern Soils
    Wiley ; 1952
    In:  Soil Science Society of America Journal Vol. 16, No. 2 ( 1952-04), p. 167-170
    Details
    In: Soil Science Society of America Journal, Wiley, Vol. 16, No. 2 ( 1952-04), p. 167-170
    Abstract: This study was aimed to ascertain (a) the natural occurrence of R. phaseoli in certain soils, (b) whether any relationships existed between types of nodulation and efficiencies of the strains, and (c) homogeneity of reactions among strains isolated from the same nodule. Variations among the strains in cultural and fermentative characteristics were marked, yet, on the whole, the strains isolated from the same nodules showed more uniformity in litmus milk reactions and ability to utilize the same carbohydrates than did those obtained from different nodules. From a practical point of view bean rhizobia were not abundant in any of the soils tested. Rhizobia isolated from different nodules on the same plant varied widely in efficiency. Of the 85 strains isolated from nodules formed on plants grown in soil‐vermiculite mixtures, only 12 were highly effective. Differences in plant growth response to strains isolated from suspensions of the same nodule were insignificant.
    Type of Medium: Online Resource
    ISSN: 0361-5995 , 1435-0661
    URL: Article
    DOI: 10.2136/sssaj1952.03615995001600020015x
    RVK:
    RA 4845
    Language: English
    Publisher: Wiley
    Publication Date: 1952
    detail.hit.zdb_id: 241415-6
    detail.hit.zdb_id: 2239747-4
    detail.hit.zdb_id: 196788-5
    detail.hit.zdb_id: 1481691-X
    SSG: 13
    SSG: 21
    Library Location Call Number Volume/Issue/Year Availability
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    Online Resource
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    BTU Cottbus
  • 2
    Online Resource
    Online Resource
    Effect of Magnesium on the Quality and Yield of Canning Peas
    Wiley ; 1951
    In:  Soil Science Society of America Journal Vol. 15, No. C ( 1951-01), p. 205-208
    Details
    In: Soil Science Society of America Journal, Wiley, Vol. 15, No. C ( 1951-01), p. 205-208
    Type of Medium: Online Resource
    ISSN: 0361-5995 , 1435-0661
    URL: Article
    DOI: 10.2136/sssaj1951.036159950015000C0046x
    RVK:
    RA 4845
    Language: English
    Publisher: Wiley
    Publication Date: 1951
    detail.hit.zdb_id: 241415-6
    detail.hit.zdb_id: 2239747-4
    detail.hit.zdb_id: 196788-5
    detail.hit.zdb_id: 1481691-X
    SSG: 13
    SSG: 21
    Library Location Call Number Volume/Issue/Year Availability
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    Online Resource
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    Availability (electronic / print)
    BTU Cottbus
  • 3
    Online Resource
    Online Resource
    Response of Beans (Phaseolus vulgaris L.) to Inoculation with Mixtures of Effective and Ineffective Rhizobia
    Wiley ; 1954
    In:  Soil Science Society of America Journal Vol. 18, No. 2 ( 1954-04), p. 156-159
    Details
    In: Soil Science Society of America Journal, Wiley, Vol. 18, No. 2 ( 1954-04), p. 156-159
    Abstract: Ineffective rhizobia have often accounted for poor growth and low yields of certain leguminous plants despite the presence of effective rhizobia in the rhizosphere. The purpose of this study was to determine the plant growth response of beans to effective and ineffective rhizobia applied at different time intervals. Precedence in the addition of the different inocula and time of harvest were also employed as major variables. Beans receiving both effective and ineffective rhizobia simultaneously made as good growth and fixed as much nitrogen as did those which received only effective strains at planting or 21 days later. Plant response to the inoculation treatments was not different at the 35, 45, and 68‐day harvests. Plants bearing ineffective nodules and nodule‐free plants of the same age were equally susceptible to nodulation by effective rhizobia added at the 21‐day period. Ineffective rhizobia added to 21‐day old plants bearing effective nodules had no adverse effect on growth or on nitrogen content of these plants. The amount of nitrogen in the bean nodules examined was related to the kind of inoculum applied. Effective nodules contained 6–8% nitrogen, ineffective ones averaged 3–4% nitrogen and those from plants treated with mixed inocula showed a range of 5–8% nitrogen.
    Type of Medium: Online Resource
    ISSN: 0361-5995 , 1435-0661
    URL: Article
    DOI: 10.2136/sssaj1954.03615995001800020011x
    RVK:
    RA 4845
    Language: English
    Publisher: Wiley
    Publication Date: 1954
    detail.hit.zdb_id: 241415-6
    detail.hit.zdb_id: 2239747-4
    detail.hit.zdb_id: 196788-5
    detail.hit.zdb_id: 1481691-X
    SSG: 13
    SSG: 21
    Library Location Call Number Volume/Issue/Year Availability
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    Online Resource
    Open Access Request
    Availability (electronic / print)
    BTU Cottbus
  • 4
    Online Resource
    Online Resource
    Boron Content of Alfalfa as Influenced by Boron Supply
    Wiley ; 1952
    In:  Soil Science Society of America Journal Vol. 16, No. 1 ( 1952-01), p. 60-62
    Details
    In: Soil Science Society of America Journal, Wiley, Vol. 16, No. 1 ( 1952-01), p. 60-62
    Abstract: The object of this investigation was to explain the variations in the boron content of boron deficient alfalfa and to outline a procedure for sampling plants which will give a more accurate measure of the plant boron status. Alfalfa, grown in nutrient solutions where the boron was excluded during a stage of active elongation of the plant, contained 8 ppm of boron in the apical part of the shoot and 23 ppm in the total shoot. Plants receiving a continuous supply of boron had equal distribution in apical and basal parts of the shoot. In field experiments, as the available soil moisture became limiting in the surface foot of soil, the boron content of the apical leaves of the alfalfa shoot was decreased from 30 to 20 ppm while the boron content of the bottom leaves remained at 30 ppm. Apical portions of boron deficient plants in several fields contained about 8 ppm. Because of the immobility of boron in the alfalfa shoot, a sharp reduction of boron supply can result in boron deficiency symptoms on alfalfa plants with relatively high amounts of boron in the total shoot. Therefore, the indicative analysis is of the apical part of the alfalfa shoot.
    Type of Medium: Online Resource
    ISSN: 0361-5995 , 1435-0661
    URL: Article
    DOI: 10.2136/sssaj1952.03615995001600010018x
    RVK:
    RA 4845
    Language: English
    Publisher: Wiley
    Publication Date: 1952
    detail.hit.zdb_id: 241415-6
    detail.hit.zdb_id: 2239747-4
    detail.hit.zdb_id: 196788-5
    detail.hit.zdb_id: 1481691-X
    SSG: 13
    SSG: 21
    Library Location Call Number Volume/Issue/Year Availability
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    Online Resource
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    Availability (electronic / print)
    BTU Cottbus
  • 5
    Online Resource
    Online Resource
    A Soil Productivity Score Card
    Wiley ; 1952
    In:  Soil Science Society of America Journal Vol. 16, No. 3 ( 1952-07), p. 307-309
    Details
    In: Soil Science Society of America Journal, Wiley, Vol. 16, No. 3 ( 1952-07), p. 307-309
    Abstract: A soil productivity score card has been designed so that any careful agricultural worker can obtain reasonably reliable ratings for individual fields and farms in Wisconsin. The only tools required are a soil sampling tool, leveling device to approximate slopes in percent, sampling bags, and the Soil Productivity Score Card. The ratings indicate relative current capacities of fields to produce crops, and are adjusted to a possible high score of 100, the sum of 11 optimum figures which include 10 ratings for soil and land characteristics and one for length of frost‐free season. The score card offers a choice of four ratings — low to high — for each characteristic. The user of the card is not asked to recognize and map soil types. Rather, he rates soils by fields. Soil samples are taken from each field for pH, and available phosphorus and potassium quick tests. A total farm score may be derived from the field ratings. The score card has been tested on a variety of soils in Wisconsin and the results have been compared with the U. S. Soil Conservation Service land use capability classification of the same fields, and with soil survey productivity ratings. The comparison shows substantial agreement between the three methods of evaluation. On farms which are without any soil map, the score card helps to provide essential information for the guidance of workers in farm planning and rental programs. Admittedly, there are certain inherent defects in a rating scheme of this kind, such as interdependence of soil factors and differential productivity of a given soil for different crops.
    Type of Medium: Online Resource
    ISSN: 0361-5995 , 1435-0661
    URL: Article
    DOI: 10.2136/sssaj1952.03615995001600030020x
    RVK:
    RA 4845
    Language: English
    Publisher: Wiley
    Publication Date: 1952
    detail.hit.zdb_id: 241415-6
    detail.hit.zdb_id: 2239747-4
    detail.hit.zdb_id: 196788-5
    detail.hit.zdb_id: 1481691-X
    SSG: 13
    SSG: 21
    Library Location Call Number Volume/Issue/Year Availability
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    Online Resource
    Open Access Request
    Availability (electronic / print)
    BTU Cottbus
  • 6
    Online Resource
    Online Resource
    The Effect of Mineral Nutrition on the Expression of Potato Leaf Roll Virus Symptoms
    Wiley ; 1954
    In:  Soil Science Society of America Journal Vol. 18, No. 1 ( 1954-01), p. 53-55
    Details
    In: Soil Science Society of America Journal, Wiley, Vol. 18, No. 1 ( 1954-01), p. 53-55
    Abstract: Some mineral deficiency symptoms and those of the leaf roll virus have frequently been confused. The similarity between mineral deficiencies and leaf roll symptoms suggests that the effect of the virus might be influenced by the nutrition of its host. A study of certain mineral relationships between healthy and diseased leaf roll plants in the Chippewa variety was therefore undertaken. In greenhouse and field experiments it was found that phosphorus deficiency produced symptoms ranging from slight to severe rolling of the leaves and from light to heavy pigment formation as the amount of phosphorus decreased. Symptoms of extreme phosphorus deficiency in non‐virus plants were similar to those produced by the virus except that more pigmentation occurred in the phosphorus deficiency symptoms. Severe nitrogen and slight phosphorus deficiencies caused only a moderate increase in the intensity of leaf roll symptoms while calcium, potassium, magnesium and sulfur had little or no effect. Leaf roll symptoms tended to be masked with adequate balanced nutrition. Analyses of leaf tissues taken from plants grown in the greenhouse and field showed in general that phosphorus, calcium, and magnesium contents were appreciably reduced in plants having leaf roll. The nitrogen and potassium contents apparently were not influenced by the virus. Dry weights of diseased plants were generally less than those of non‐virus plants. The results indicate that this might have been caused by the virus interfering with the uptake of phosphorus, calcium, and magnesium.
    Type of Medium: Online Resource
    ISSN: 0361-5995 , 1435-0661
    URL: Article
    DOI: 10.2136/sssaj1954.03615995001800010013x
    RVK:
    RA 4845
    Language: English
    Publisher: Wiley
    Publication Date: 1954
    detail.hit.zdb_id: 241415-6
    detail.hit.zdb_id: 2239747-4
    detail.hit.zdb_id: 196788-5
    detail.hit.zdb_id: 1481691-X
    SSG: 13
    SSG: 21
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Online Resource
    Open Access Request
    Availability (electronic / print)
    BTU Cottbus
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