Zea mays L., conservation tillage, planting dates
Conservation tillage systems that leave greater crop residue on the soil surface to reduce wind and water erosion are becoming more popular with Iowa farmers. Conservation-tilled soils, however, tend to be wetter and cooler at planting time than conventional fall plowed soils. Our objective was to compare corn (Zea mays L.) hybrids classified as cold or not cold tolerant (based on laboratory germination tests) on soils that were either fall plowed (conventional tillage) or spring disked (conservation tillage). Our results did not show any clear advantage for using conventional instead of conservation tillage. Means for the hybrids classified as cold tolerant and not cold tolerant were similar for both tillage systems. No consistent differences in stand, yield, and grain moisture were found between the two tillage systems which suggested that comparable performance would be expected for the two methods of tillage.
Proceedings of the Iowa Academy of Science
© Copyright 1985 by the Iowa Academy of Science, Inc.
Funnemark, W. L. and Hallauer, A. R.
"Cold Tolerance in Corn Hybrids as Affected by Tillage Systems and Planting Dates,"
Proceedings of the Iowa Academy of Science: Vol. 92:
, Article 4.
Available at: http://scholarworks.uni.edu/pias/vol92/iss2/4