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Studies on Tikka disease: Effect of sowing dates on the biochemical parameters of groundnut

A field experiment was conducted at Boodamanahalli village, (Bangalore rural district) to know the effect of tikka disease, caused together by Cercospora arachidicola and Cercosporidium personatum on biochemical parameters viz., total sugars, total phenols and total proteins as influenced by different sowing dates in groundnut. It included two varieties, TMV-2 a highly susceptible one and GBPD-4 a resistant with nine sowing dates starting from December 2008 to August 2009 at monthly intervals. The results revealed that total sugars, total phenols and total proteins did not vary much irrespective of different sowing dates, variety and season in the initial stages of the crop as the disease was very low. On the contrary, there was decrease in the total sugar and increase in the total phenols and total proteins contents with the increase in disease severity of the crop age. These changes were more pronounced in TMV-2 variety during kharif season than summer season and all these changes were comparatively less pronounced in GPBD-4 variety revealing that these factors had possible influence on biochemical parameters. | Studies on Tikka disease Effect of sowing dates on the biochemical parameters of groundnut