RUST DEVELOPMENT IN PEARL MILLET CAUSED BY PUCCINIA SUBSTRIATA VAR. PENICILLARIAE IN RELATION TO DATE OF SOWING AND WEATHER PARAMETERS
ANNU*, KUSHAL RAJ AND POOJA SANGWAN
Department of Plant Pathology
CCS Haryana Agricultural University,
Hisar-125 004 (Haryana), India
*(e-mail : vermaannu06@gmail.com)
(Received : 11 January 2017; Accepted : 25 January 2017)
SUMMARY
Rust caused by Puccinia substriata var. penicillariae is one of the major diseases affecting both
forage and grain production in pearl millet, particularly in the post-rainy cool season (rabi) crop. Attempt was made to find out the effect of rust of pearl millet on HHB 197, HHB 223 and HHB 197 at three different dates of sowing. Rust appearance in HHB 223 was more in comparison to HHB 197 and HHB 67 Imp. The per cent rust severity was more at recommended date of sowing in comparison to early sown and late sown crop. AUDPC was more in HHB 223 corroborating with HHB 197 but less in HHB 67 Imp. There was drastic change in apparent infection rate with adjustment in date of sowing and apparent infection rate was variable at different stages. Rust development was in progression phase when mean temperature ranged between 21°C to 28°C.
Key words: Pearl millet, rust severity, development, weather parameters