NARENDER SINGH AND M. C. KAMBOJ*
CCS HAU, Regional Research Station, Karnal-132001 (Haryana), India
*(e-mail: bagri.narender@hau.ac.in)
(Received : 5 January 2023; Accepted : 28 March 2023)
SUMMARY
A field experiment was conducted on effect of date of sowing on growth and grain yield of spring maize at CCS Haryana Agricultural University, Regional Research station, Karnal during the year 2015, 2016 and 2017. Seven maize hybrids namely HQPM 1, HQPM 4, HQPM 5, HM 9, HM10, HM 11 and HM 12 were tested and kept in main plots with combination of five sowing dates viz., last week of January, first week of February, second week of February, third week of February and fourth week of February were kept in sub plots which were replicated thrice. The results of the trial revealed that maximum grain yield was obtained with sowing during first week of February (86.4 q/ha) followed by last week of January (82.7) and second week of February (80.9. Similar trend was observed for B: C ratio. The maximum B: C ratio was found with sowing was done during first week of February (1.9) followed by last week of January (1.8) and second week of February (1.8). Among different maize hybrids, HM 10 gave maximum grain yield (82.9 q/ha) which was significantly higher than other hybrids except HM 11(81.0 q/ha) and HQPM 4 (79.8 q/ha).
Key words: Spring maize, sowing date, hybrids, grain yield, economics