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Confectionary (Non-oil) Sunflower - Langdon
Seed Over Screen Seed Yield**
Brand Hybrid Days  
to Flower
Days*  
to Maturity
Plant  
Ht
Test  
Wt
Harvest  
Moisture
22/64 20/64 18/64 1997 1998 2 year Avg
in lbs/bu % ------- % Over ----- ------------ lbs/ac ----------
Agway Royal Hyb RH 3703 72 126 77 27.5 16.5 30 41 20 2576 2992 2784
Agway Royal Hyb RH 3733 72 129 82 27.0 16.7 23 35 32 2492 3046 2769
Agway Royal Hyb RH 2073 74 127 77 26.3 17.1 43 33 15 -- 2491 --
Agway Royal Hyb RH 2373 73 129 78 26.0 17.4 30 39 20 -- 2909 --
Interstate Seed IS 8004 72 123 83 26.2 13.8 22 38 25 -- 3577 --
Interstate Seed IS Exp 49097 71 126 80 27.7 13.6 42 42 11 -- 2990 --
Pioneer 63C71 75 123 71 24.0 11.3 8 32 38 -- 2954 --
Pioneer DE-1998 72 123 76 26.0 11.2 17 42 30 2583 2407 2495
Pioneer 6946 74 123 77 24.3 11.6 15 38 36 2028 2876 2452
RRC 2232 73 125 75 25.2 12.9 10 19 37 2642 2340 2491
RRC 2331 78 128 80 26.5 24.9 10 28 34 2299 2540 2420
RRC 3531 75 128 77 24.3 20.7 26 35 24 2220 2823 2522
Seeds 2000 Bigfoot 72 124 78 26.7 11.2 4 41 41 3315 3336 3326
Seeds 2000 Kodiak 69 123 73 25.3 11.8 10 28 41 2567 2788 2678
USDA 924 70 127 77 25.3 15.1 26 40 21 2345 3110 2728
Mean 73 125.4 78 26.0 14.8 -- -- -- 2586 2909 --
C.V. % 1.7 1.9 5.1 3.4 11.7 -- -- -- 9.1 12.0 --
LSD .05 2.0 3.9 6.6 1.5 2.9 -- -- -- 395 572 --

Planting Date: May 19, 1998 
Harvest Date: September 30, 1998
*Days to mature is a visual rating of physiological maturity (back of heads are yellow and bracts turning brown).
**Yield adjusted to 10% moisture.