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  • 1
    Electronic Resource
    Electronic Resource
    Determination of threshold value of iron in soils and plants for the response of rice and lentil to iron application in calcareous soil (1984)
    Springer
    Plant and soil 82 (1984), S. 141-148 
    Details
    ISSN: 1573-5036
    Keywords: Calcareous soil ; DTPA-extractable iron ; Iron ; Lentil ; Rice
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary In a pot experiment with 26 calcareous soils, the critical limit of Fe in soils and plants was evaluated. DTPA-extractable Fe was found significanty correlated with Bray's per cent yield in rice. The Fe2+ (iron) in rice and lentil was also found significantly correlated with DTPA-extractable Fe as well as Bray's per cent yield showing thereby the superiority of Fe2+ (iron) in leaves over DTPA-extractable soil Fe to differentiate Fe responsive soils from non-responsive ones. The total Fe content in plant tissues does not seem correlated with the occurrence of Fe deficiency. The threshold values of DTPA-extractable soil Fe and Fe2+ (iron) in rice and lentil leaves were 6.95, 44 and 74.5 ppm, respectively below which appreciable responses to Fe application were observed. The optimum Fe level for these soils was found to be 10 ppm in which the dry matter yield response in all the 19 rice soils and 16 lentil soils ranged from 14.28 to 56.16 (Av. 25.75%) and 13.31 to 53.97 (Av. 22.47%), respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02220778
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Field resistance to late blight of four indian potato cultivars (1995)
    Springer
    Potato research 38 (1995), S. 171-178 
    Details
    ISSN: 1871-4528
    Keywords: zoospore ; Phytophthora infestans ; resistance components ; area under disease progress curve ; Solanum tuberosum L.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The nature and extent of field resistance to late blight, and the effect of plant age and inoculum level on resistance components and host attributes, were studied on the Indian potato cultivars Kufri Chandramukhi, Kufri Jyoti, Kufri Badshah and Kufri Sherpa. Latent period, infection efficiency, colonization rate and sporulation were found to operate in cvs Kufri Jyoti, and Kufri Badshah. Based on component analysis cv. Kufri Jyoti was similar to or sometimes more resistant than Kufri Badshah. No correlation was observed between any of the host attributes and resistance to late blight, except that the erect canopy of Kufri Badshah was associated with its slow blighting rate. At high inoculum, colonization rate and total sporulation were increased but infection efficiency was decreased.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02357930
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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