Table 2. Harvest plant population, grain yield, test weight, oil content, and pounds of oil produced per acre in the Sunflower Date of Seeding Study on the Miles Hansen Farm, Bowman, ND, 1999.
Date Plant population Grain
yield1
Test
weight1
Seed oil content Oil
produced

-----------------Fatty acids-----------------

Palmitic Stearic Oleic Linoleic
no./acre lb/acre lb/bu % lb/acre ---------------------- % ----------------------
28-Apr 2 18937 3 1206.6 31.6 43.0 520.1 4.8 4.9 48.2 39.7
23-May 29161 1765.0 28.1 44.0 776.0 4.0 4.1 64.0 25.2
4-Jun 26318 1507.7 25.7 43.1 648.2 4.5 3.8 54.4 34.9
14-Jun 26741 989.8 22.6 39.6 391.8 4.7 4.7 47.2 41.0
Mean 25289 1367.3 27.0 42.4 584.0 4.5 4.4 53.4 35.2
CV% 8.5 13.6 5.6 2.5 14.6 7.8 11.1 16.0 23.3
LSD .05 3455.1 297.8 2.4 1.7 136.6 NS 0.8 NS NS

1 Adjusted to 10% moisture basis.
2 First date of seeding had severe sunflower moth damage.
3 Low population due to fewer seeds per acre planted.