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Confectionary (Non-oil) Sunflower (Table 2)  - Langdon
Midge
Disease
Seed Yield*
Brand Hybrid Flowering Maturity Head Rot Stalk 
Rot
Downy 
Mildew
Test 
Weight
1998 1999 2 year 
Avg
0-9 0-5 % % % lbs/bu -------- lbs/ac --------
Agway RH 2073 3.4 0.2 12.9 10.6 1.7 25.5 2491 2196 2344
Agway RH 2373 5.4 0.7 11.3 7.0 0.0 24.2 2909 1798 2354
Agway RH 3703 3.8 0.4 14.1 10.9 2.3 26.5 2992 1718 2355
Agway RH 3733 4.8 0.4 6.5 12.0 0.0 24.8 3046 1876 2461
Croplan Genetics CL 110 3.5 0.4 5.2 13.3 3.3 23.0 -- 1541 --
Integra Seed INT Ex618 5.4 0.8 9.7 6.6 0.0 26.0 -- 1991 --
Integra Seed INT Ex661 6.5 1.1 26.9 0.7 0.0 25.3 -- 1788 --
Interstate Seed IS 8004 3.5 0.5 23.2 5.1 2.0 24.2 3577 1301 2439
Interstate Seed IS 8048 3.3 0.4 10.8 17.1 0.0 26.2 -- 1863 --
Pioneer 63C71 3.9 0.9 18.4 3.8 0.0 23.2 2954 1756 2355
Pioneer 6946 3.6 0.0 9.8 12.8 0.0 22.7 2876 1815 2346
Pioneer DE 1998 5.8 0.5 10.6 10.0 1.7 24.8 2407 1839 2123
Pioneer XF981 4.1 0.2 17.3 8.3 3.7 23.3 -- 1785 --
Proseed C9802 5.3 0.3 20.3 9.3 0.0 25.0 -- 1415 --
Proseed C9813 4.6 0.9 3.7 6.7 1.7 25.0 -- 1222 --
Proseed C9820 4.6 0.9 30.1 22.9 0.0 23.8 -- 1259 --
Proseed C9822 4.0 0.9 26.0 23.2 0.0 24.2 -- 1263 --
Proseed C9824 2.0 0.2 45.9 12.6 0.0 22.5 -- 810 --
Red River Comm. RRC 2213 4.1 0.7 14.6 7.0 0.0 24.7 -- 1638 --
Red River Comm. RRC 2232 6.3 1.6 19.5 4.2 3.3 22.7 2340 1243 1792
Red River Comm. RRC 2413 5.9 0.5 9.2 12.0 0.0 24.5 -- 1404 --
Red River Comm. RRC 2582EX 6.0 0.8 18.0 3.9 0.0 25.5 -- 1925 --
Red River Comm RRC 6182EX 4.2 0.3 32.2 7.6 1.7 23.5 -- 1403 --
Red River Comm. RRC 6782EX 3.5 0.4 25.9 4.3 0.0 23.7 -- 1514 --
Seeds 2000 Bigfoot 7.1 1.3 18.6 5.8 0.0 25.8 3336 1672 2504
Seeds 2000 Kodiak 6.6 0.9 8.2 5.1 0.0 25.7 2788 1545 2167
Springfield Mills Springfield 517 3.3 0.2 12.6 12.4 0.0 24.2 -- 1688 --
USDA 924 5.0 0.3 17.6 9.3 1.7 23.3 3110 1305 2208
Mean 4.7 0.7 17.3 9.2 0.9 24.5 2909 1587 --
C.V. % 22.8 79.3 52.1 90.4 274 2.9 12.0 20.7 --
LSD .05 1.8 0.9 14.9 NS NS 1.2 572 540 --

*Yield adjusted to 10% moisture.

Sclerotina head rot, stalk rot, and downy mildew ratings indicate percent of plants infected within a plot. Plants with head rot were not harvested for yield. Plants with stalk rot were harvested but yields were affected by timing of infection. Downy mildew infection was generally early and no yield was obtained from most plants.

Midge rating at flowering indicates percent of ray petals missing and is a measure of a hybrid's attractiveness to the midge. 0=no ray petals missing. 9=all ray petals missing. Midge rating at maturity indicates damage to the head and is a measure of a hybrid's tolerance to midge feeding. 0=no visible damage, 5=head completely closed with no seeds present.