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7211. Veseth, R.. 1989. Selecting soft white winter wheat varieties for conservation tillage.. STEEP Conservation Farming Update, Summer 1989, p. 9-11.
A number of commonly used winter wheat varieties were tested for performance under conventional and no-till management. Yield rankings for the varieties were nearly the same under no-till and till treatments. The ratios of no-till yield to till yield for each variety generally ranged from 0.95 to 1.00. Hill 81 had a ratio of 0.90, indicating that it was not achieving its yield potential under no-till, although more recent results have found it to be a good variety for no-till. Growers should generally select varieties which yield the highest under conventional tillage in their area when evaluating varieties for no-till or other conservation tillage systems. Other factors should be considered when selecting varieties. Early fall planting leads to higher disease potential for stripe rust, strawbreaker footrot, Cephalosporium stripe, and barley yellow dwarf virus. Thus, resistance to these diseases should be a varietal consideration. One significant drawback of semi-dwarf wheats that has not been fully overcome is poor emergence under less-than-desirable seedbed conditions. Also, cold hardiness varies with variety. Daws has generally shown superior cold hardiness, but has other drawbacks.