A pot culture investigation was carried out to find out the tolerance of four sorghum genotypes viz., CSH 1, CSH 3, Swarna and GM 2-3-1 to pre emergence application of atrazine and 2, 4-D at 0.5 to 2.5 and 0.5 to 2.0 kg a. i. per ha, respectively. Application of higher dose of herbicide reduced germination of all the genotypes. The reduction was more drastic with 2, 4-D even at lower concentrations. However, CSH 3 was found to be more tolerant to both the herbicides.
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Tamil Nadu Agricultural University
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Tamil Nadu, India.
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