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  • Author or Editor: Kerry L. Petersen x
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Abstract

‘Jubilee’ sweet corn (Zea mays L.) was grown under conventional tillage, strip tillage, and no-till methods in 1983 with 5 irrigation levels imposed on each tillage treatment. The crop-water production functions for evapotranspiration vs. yield were different in scale but similar in slope for the 3 tillage treatments. At each level of seasonal applied water, the conventional tillage produced significantly higher yields of husked sweet corn than did strip tillage, and strip tillage yields were significantly higher than those of no-till.

Open Access

Abstract

‘Jubilee’ sweet corn (Zea mays L.) was grown under conventional and strip tillage in 1982 and under conventional tillage, strip tillage, and no-till culture in 1983. Stand establishment was decreased by strip tillage in 1982, but was lower only in the no-till treatment in 1983. Midseason plant height in strip tillage was slightly less than in conventional tillage both years, whereas the no-till plants were much shorter than in other treatments the second year. Yields of husked ears from strip tillage were 7% and 16% lower than from conventional tillage in 1982 and 1983, respectively. In 1983, yield from the no-till treatment was 31% lower than from conventional tillage. The percentage of kernel moisture always was higher from plants in strip tillage and no-till, indicating these treatments had ears that were more immature at time of harvest than in conventional tillage. Average daily soil temperatures at the 5 cm depth for the first 30 days after planting in 1983 were highest for conventional tillage, followed by strip tillage and no-till.

Open Access