The effect of neem oil application on rice tungro infection in susceptible (S). moderately resistant (MR) and resistant (R) varieties which were inoculated by using 1, 3 and 5 viruliferous Nephotettix virescens per plant was studied. Neem oil [5%] was applied as both pre-inoculation and post-inoculation sprays. The varieties used were ADT 31 [S]. ACM 9 [MRJ, IR 50 (MR) and TNAU 831520 (R).
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Tamil Nadu Agricultural University
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Tamil Nadu Agricultural University
Coimbatore - 641 003
Tamil Nadu, India.
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