A field experiment consisting of three activities namely i. Efficacy of some conventional
insecticides against brown plant hopper infestation in rice ii. Screening of rice germplasm
resistant to BPH incidence and iii. Scr·?ening of rice genotypes to rice stem borer infestation
was conducted during 2001 to-2003 wet season. Based on two years of studies, Confidor 200
SL was the most effective insecticide in lowering the BP H intensity (0. 7 Score) followed by
Endosulphan 35 Ec (Score 1.2) and Monocrotophos 36 Ec (Score 1.3). Consequently,
Confidor 200 SL treated plots produced significantly higher yield of 2.5 t/ha. Monocrotophos
36EC (2.4 t/ha.) and Endosulphan 35Ec (2.3 t/ha.) treated plots also gave the similar yield to
that ofConfidor treated plots. Out of 109 rice genotypes tested under NRBPHN, 45 were
resistant to BP Hover the years in field condition. Among 65 lines evaluated under IRBP HN,
ARC- 10550, MUDGO, IRJ3146-45-2-3-1 and PTB-33 were recorded least pest infestation
(0-1 score). Likewise, out of 108 rice lines tested under NRSBN, none showed highly
resistant to dead heart but two rice lines vi:. BM 9855 and DR-39 were highly resistant to
white head. However, the mean result of two years showed that 13 rice germplasm like
PSBRC-2, FRX 23F5B-13FBF8, BPI 3-2, NR 1891-58-3-2-2-3-3, NR 1887-8-1-1-2-2-2-2. IR
1736-4-6, IR 68068-99-1-2-3-3, ZHONG FAN-11, DR 39 IR 74, BR 4962-12-4-1,ZHONG
506and BR 6158-RWBC-2-6-5 were resistant to both dead heart ~d.

A field experiment consisting of three activities namely i. Efficacy of some conventional
insecticides against brown plant hopper infestation in rice ii. Screening of rice germplasm
resistant to BPH incidence and iii. Scr·?ening of rice genotypes to rice stem borer infestation
was conducted during 2001 to-2003 wet season. Based on two years of studies, Confidor 200
SL was the most effective insecticide in lowering the BP H intensity (0. 7 Score) followed by
Endosulphan 35 Ec (Score 1.2) and Monocrotophos 36 Ec (Score 1.3). Consequently,
Confidor 200 SL treated plots produced significantly higher yield of 2.5 t/ha. Monocrotophos
36EC (2.4 t/ha.) and Endosulphan 35Ec (2.3 t/ha.) treated plots also gave the similar yield to
that ofConfidor treated plots. Out of 109 rice genotypes tested under NRBPHN, 45 were
resistant to BP Hover the years in field condition. Among 65 lines evaluated under IRBP HN,
ARC- 10550, MUDGO, IRJ3146-45-2-3-1 and PTB-33 were recorded least pest infestation
(0-1 score). Likewise, out of 108 rice lines tested under NRSBN, none showed highly
resistant to dead heart but two rice lines vi:. BM 9855 and DR-39 were highly resistant to
white head. However, the mean result of two years showed that 13 rice germplasm like
PSBRC-2, FRX 23F5B-13FBF8, BPI 3-2, NR 1891-58-3-2-2-3-3, NR 1887-8-1-1-2-2-2-2. IR
1736-4-6, IR 68068-99-1-2-3-3, ZHONG FAN-11, DR 39 IR 74, BR 4962-12-4-1,ZHONG
506and BR 6158-RWBC-2-6-5 were resistant to both dead heart ~d.