CULM STRENGTH (lodging resistance): Culm strength is first rated after panicle emergence
by gently pushing the tillers back and forth afew times. This test gives some indication of
culm stiffness and resilience. Final observation at maturity is made to record standing position
of plants. Plants in the plots are classified as (1) strong (no lodging), (3) moderately strong (most plants leaning), (5) intermediate (most plants moderately lodged), (7) weak (most plants nearly flat), and (9) very weak (all plants flat).