Abstract:
A field experiment was conducted during summer season of 2012 for generating information on growth
and to workout cob and corn characteristic practices with its yield and economics in summer maize grown
as bay corn (Zea mays L.). in split plot design and replicated three times. Plant height at knee high stage
only increased markedly due to higher rate of basal nitrogen application resulting significantly taller plant
under SPAD based nitrogen management with 75 kg N/ha basal followed by N top dressing at SPAD
value at <45 (each time @ 20kg N/ha) and also dry matter production at tasselling stage were found to
improved significantly under SPAD compared to blanket split of 150 kg N/ha with 3 splits. The cob number
were found to be non significant whereas blanket application with higher rate of basal N application
registered significant increase in young cob yield. Higher level of N application under both the N
management strategies registered significantly higher number of baby corn and yield of baby corn over
lower level N of application. However, total fodder yield maximum with SPAD based N management due
to growth attributes like plant height improved significantly. It should be noted that though net return
(Rs.154970) was maximum with the treatment higher dose of blanket application, but B: C ratio was estimate
to be highest with SPAD based N application. Seed priming with GA3
did not show significant effect on
growth and yield of baby corn. Economics of baby corn production with seed priming also remained
unfavorable
