ontario sugar beet growers - Atrium - University of Guelph

Cob Length
Irrigation significantly increased seed corn cob length by 14.4%. The longest cobs were
Pride #2, INB 508, Pride #3, Hyland T50-Bl, INB 505 and Pride #4 while the shortest
cob was INB 503.
Cob Width
Irrigation significantly increased seed corn cob widths by 5.6%. The widest cobs were
Pride#3 and Pride #4 while the narrowest cob was INB 501.
Number of Cobs
Irrigation significantly increased the number of mature cobs by 11.2%. INB508 had the
highest number of cobs per plot while INB 502 had the lowest number.
Average Number of Kernels per Cob Row
Irrigation significantly increased the number of kernels per row by 19.3%. Pride #2 had
the largest number of kernels per row while INB 503. The number of kernels per row
was correlated to the cob length with the longest cobs having the largest number of
kernels.
Average Number of Rows per Cob
Irrigation significantly increased the number of rows per cob by 6.3%. Pride #3 had the
largest number of rows per cob while Hyland T50-B1 had the fewest rows per cob.
Table 3: Seed corn irrigation analysis - Irrigation treatments - September 28
Treatments Cob Cob # Ave. # Ave #
Length Width Cobs Kernels per Rows per
Irrigation timings cm (10) cm (10) row (10 cobs) cob (10)
Irrigation 7 times 1 12.2 35.7 69.2 14.9 12.6
Irrigation 5 times 11 1.1 35.7 67.6 15.4 12.7
Control 97.6 33.8 61.5 12.7 11.9
SPLIT PLOT AOV s s s s s
LSD (0.05) 3.1 0.6 4.8 0.6 0.3
*These values are the means of four replications.