Nitrogen and Sulfur Management for Winter Rapeseed.

Winter rapeseed (Brassica napus L.) cultivars with high erucic acid content have recently been introduced as a commercial crop in North Carolina. This study included six site-years of nitrogen and sulfur responses in Coastal Plain soils of different drainage classes.). Averaged across sites highest seed yields were obtained with 179 kg N ha^-1 applied as a late topdress (February) or with 269 kg N ha^-1 applied either as a late topdress or split with half in January (early topdress) plus half as a late topdress. Application of 34 kg S ha^-1 resulted in yield responses all three years on the very poorly drained Tidewater region soils (Portsmouth Typic Umbraquults, but no yield responses on three sandier and somewhat poorly drained Coastal Plain soils (Stallings Aeric Paleaquults, Johns Aquic Hapludults).