Nitrogen and Spacing Requirments for Advanced Chipping Selections ND7799C-1 and ND7519-1

Abstract

To understand the best agronomic practices, including nitrogen fertilization rate and within-row spacing for two potential cultivar releases of NDSU, a study was carried out in 2018 and 2019 for the advanced chipping selections ND7799c-1 and ND7519-1. Measurements included nitrogen uptake efficiency, specific gravity, Hunter L value, glucose and sucrose contents. Results indicated that ND7799c-1 grown at 23 cm within-row spacing had a similar marketable yield to an industry standard, Dakota Pearl in 2018. ND7519-1 yielded similarly to Dakota Pearl. Nitrogen was not a significant variable impacting yield or chipping quality in 2018 or 2019. Both advanced selections had lower sucrose and glucose levels at the time of harvest compared to Dakota Pearl. ND7799c-1 could be stored for 8 months, and ND7519-1 could be stored 6-8 months before chip quality decreased. Implications from the research show that ND7799c-1 and ND7519-1 could be successful in the Northern Plains production area.