Influence of Soil Environment on Rootrot of Tobacco 



Plate 7 



JuLr\ 3 5 7 9 II 13 15 17 l9 21 23 25 27 29 31 



3b 



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32 



30 



26 



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32 



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26 



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// 13 15 17 19 21 23 25 27 29 21 



ujUj 



Journal of Agricultural Research 



Vol. XVII, No. 2 



