Effects of reduced plant height on breeding requirements and ...

at the wídest spacing.
fhe experirnent was <strong>plant</strong>ed on April 2f at ttlinnipeg,
May ? at Sanford, and June 3 at Carrnan. Weeds were controlled
by chemical application at aìl sites to the extent
possible, and hand weeding was done as the need dictated at
$Iinnipeg and Sanford. The experinent receÍved a J.0 cm"
irrigation thírty-four days after <strong>plant</strong>ing at Tfinnipeg.
The Sanford sÍte suffered some excess noisture stress d.uring
June. The Carnan location suffered severe drought stress
throughout the growing season. The Wirueipeg site suffêred
mild hail damage just prior to harvest.
the following characteristies were measured in the same
fashion as in Experiment II.
(1) Ptant heÍght (cm.)
(2) Yield (ks,/he..)
(l) sPikesr/unit area
(4) Kernels,/spire
(S) zao Kernel weight
(6) rest weight (kg,/n1.)
(?) r,o¿ging - at lfinnipeg only
(8) Percent barley nitrogen
Analyses <strong>of</strong> rrarianc e were used to determine slgnif,icant
differences between l-evels <strong>of</strong> the factors and <strong>of</strong> interactions
anong these factors. Slngle degree <strong>of</strong> freedom comparisons
were calcu1âted to determíne the manner in whieh the factors
'seeding rate" and 'row spacingÊ affected the relative performance
s <strong>of</strong> the genotypes.
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