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  • 1
    Electronic Resource
    Electronic Resource
    Studies on the mineral nutrition of tea (1974)
    Springer
    Plant and soil 41 (1974), S. 1-12 
    Details
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Details of experimental technique, including definition of a method of sampling leaves, are reported. These were used throughout the work reported in subsequent papers in this series.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00017939
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Studies on the mineral nutrition of tea (1975)
    Springer
    Plant and soil 43 (1975), S. 279-293 
    Details
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Data from a series of ten experiments show that responses to potash fertilizers leading to an improved return from nitrogenous fertilization will occur where the soil pH is 4.9 or lower. Potassium concentrations below 1.75% in first leaf with bud and 1.57% in third leaf are a clear indication that lack of potassium is limiting yield. The visual symptoms of potassium deficiency are described and the out-ward response to potash fertilizer application reported. Yield responses follow the rehabilitation of the maintenance foliage in which photosynthetic activity creates the constituent materials for the crop. The level of potassium application must be related to the crop yield and the full benefit of potassium cannot be achieved unless other nutrients, particularly phosphate, are not limiting.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01928492
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Studies on the mineral nutrition of tea (1975)
    Springer
    Plant and soil 43 (1975), S. 259-278 
    Details
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Phosphate fertilizer incorporated in the soil placed around tea plants when planted in the field produced a large improvement in the rate of growth of the plants, thus indicating that tea in acid soils had a demand for phosphate. Yield responses to phosphate fertilizer applied to mature tea were uncommon and the pattern of these confused. This work showed that mature tea will absorb phosphate and give positive yield responses when there is an undisturbed mulch layer on the soil surface. Within this layer phosphate is maintained in a more available form and many highly active roots are formed. These conditions are destroyed by manual weeding; the mulch forms naturally from tea leaves and prunings where no-cultivation herbicidal weed control is practised.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01928491
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Studies on the mineral nutrition of tea (1975)
    Springer
    Plant and soil 43 (1975), S. 309-316 
    Details
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Results from five experiments show that magnesium has no effect on crop yield when the soil pH lies between 4.1 and 5.0 over the range of magnesium contents of first and third leaf samples from the experiments. Within te range studied there was no antagonism between potassium and magnesium. Potassium fertilizer application reduced the incidence of magnesium deficiency symptoms on old leaves when potassium was also deficient; this change did not affect yield data from 26 experiments indicating that most tea in East Africa can obtain an adequate supply of magnesium.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01928494
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Studies on the mineral nutrition of tea (1975)
    Springer
    Plant and soil 43 (1975), S. 279-293 
    Details
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Data from a series of ten experiments show that responses to potash fertilizers leading to an improved return from nitrogenous fertilization will occur where the soil pH is 4.9 or lower. Potassium concentrations below 1.75% in first leaf with bud and 1.57% in third leaf are a clear indication that lack of potassium is limiting yield. The visual symptoms of potassium deficiency are described and the out-ward response to potash fertilizer application reported. Yield responses follow the rehabilitation of the maintenance foliage in which photosynthetic activity creates the constituent materials for the crop. The level of potassium application must be related to the crop yield and the full benefit of potassium cannot be achieved unless other nutrients, particularly phosphate, are not limiting.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01928492
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Studies on the mineral nutrition of tea II — Nitrogen (1975)
    Springer
    Plant and soil 42 (1975), S. 501-516 
    Details
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The response of tea in terms of additional crop yield from a given increase of nitrogen application is more important than the actual crop level. Responses to nitrogen on tea throughout the world are of the same order within a wide range. Results show that the response falls off as nitrogen-application-levels rise which is often a consequence of limited availability of other nutrients. The acidifying effect of some nitrogen fertilisers intensifies the problem by reducing the availability of base nutrients. Leaf analysis data indicate that nitrogen deficiency is not uncommon. It is important to determine the conditions under which alleviation of deficiencies of other nutrients will improve the response to higher levels of application of nitrogen. re]19720327
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00009939
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Studies on the mineral nutrition of tea (1975)
    Springer
    Plant and soil 43 (1975), S. 295-307 
    Details
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Yield data, soil and leaf analysis from a series of fertilizer field experiments show that the effect of excessive quantities of calcium on tea is to reduce the uptake of potassium and induce potassium deficiency with a consequent reduction in crop yield. The effect is cumulative and can follow repeated applications of small amounts of calcium such as are present in superphosphate. Application of potash fertilizer will counteract the effect of the calcium.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01928493
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Studies on the mineral nutrition of tea (1975)
    Springer
    Plant and soil 43 (1975), S. 309-316 
    Details
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Results from five experiments show that magnesium has no effect on crop yield when the soil pH lies between 4.1 and 5.0 over the range of magnesium contents of first and third leaf samples from the experiments. Within te range studied there was no antagonism between potassium and magnesium. Potassium fertilizer application reduced the incidence of magnesium deficiency symptoms on old leaves when potassium was also deficient; this change did not affect yield data from 26 experiments indicating that most tea in East Africa can obtain an adequate supply of magnesium.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01928494
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Studies on the mineral nutrition of tea (1975)
    Springer
    Plant and soil 43 (1975), S. 259-278 
    Details
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Phosphate fertilizer incorporated in the soil placed around tea plants when planted in the field produced a large improvement in the rate of growth of the plants, thus indicating that tea in acid soils had a demand for phosphate. Yield responses to phosphate fertilizer applied to mature tea were uncommon and the pattern of these confused. This work showed that mature tea will absorb phosphate and give positive yield responses when there is an undisturbed mulch layer on the soil surface. Within this layer phosphate is maintained in a more available form and many highly active roots are formed. These conditions are destroyed by manual weeding; the mulch forms naturally from tea leaves and prunings where no-cultivation herbicidal weed control is practised.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01928491
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Studies on the mineral nutrition of tea (1975)
    Springer
    Plant and soil 43 (1975), S. 295-307 
    Details
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Yield data, soil and leaf analysis from a series of fertilizer field experiments show that the effect of excessive quantities of calcium on tea is to reduce the uptake of potassium and induce potassium deficiency with a consequent reduction in crop yield. The effect is cumulative and can follow repeated applications of small amounts of calcium such as are present in superphosphate. Application of potash fertilizer will counteract the effect of the calcium.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01928493
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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