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Studies on soil amendments and genotypic evaluation for long term amelioration of chlorosis in mulberry

Chaluvachari , U. D. Bongale &  B. S. Ramesha
Karnataka State Sericulture Research and Development Institute
Thalaghattapura, Bengaluru-560 062

Received 7th Jan., 2012;  Revised 10th June., 2012

Abstract : Majority of M5 mulberry garden soils in the study area are red sandy with higher pH (7.9 – 8.2) associated with lower than identified critical levels of soil Mn and Zn. It also exhibited different nutrient deficiency symptoms related to Zn, Mn, Mg and S  in the form of chlorosis in young mulberry leaves. In view of this, intensive bench mark survey was conducted in 14 TSCs of Kolar, Bangalore rural, urban, Tumkur, Chitradurga, Shimoga and Gulburga districts and  collected 569 leaf and 300 soil samples from healthy and chlorotic mulberry gardens during 2003-04. The collected samples were analysed for important soil fertility and leaf quality parameters and the data were computed with respect to different TSCs. Based on field survey and results of  soil and plant tissue analysis, 20 chlorotic mulberry  gardens were selected for the study. Significant variations have been found in the EC, OC, pH, Mn, Zn & other chlorosis related parameters in ammended and non ammended soil in these selected 20 chlorotic mulberry gardens.

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