Skip to main content
CORESTA Meeting, Agronomy/Phytopathology, 2021, Online, AP 43

Cigar wrapper response to nitrogen fertilizer rates in western North Carolina

SHORT M.M.; VANN M.C.; CHEEK J.A.; MACHACEK J.L.; WHITLEY D.S.
Department of Crop & Soil Sciences, North Carolina State University, Raleigh, NC, U.S.A.

Cigar wrapper tobacco is a new and emerging cash crop in western North Carolina. To develop nitrogen (N) fertilizer recommendations, field trials were initiated in 2020 to quantify the impact of N application rate to cigar wrapper tobacco yield, cured leaf grade distribution, and cured leaf chemistry. Connecticut Broadleaf and Pennsylvania Seedleaf (PA41) tobacco types were evaluated in our study. Cured leaf yield for Connecticut Broadleaf (2,037 kg ha-1) and PA41 (2,340 kg ha-1) was maximized at 159 and 191 kg N ha-1, respectively. Wrapper (7 %) and binder (31 %) grades as well as total alkaloid concentration in cured leaves (3.91 %) increased linearly with N application in PA41 varieties and were maximized at 224 kg N ha-1. In contrast, wrapper (5 %) and binder (23 %) grades were maximized between 173 and 181 kg N ha-1 in Connecticut Broadleaf varieties. Straight strip and filler grades likewise declined as N rate increased in both cigar wrapper types. Total alkaloid concentration was highest (3.78 %) when 148 kg N ha-1 was applied to Connecticut Broadleaf varieties. Our results indicate that PA41 has a higher yield potential than Connecticut Broadleaf and should be fertilized with a greater quantity of N for these yields to be achieved. Our results also suggest that N application may need to be higher than what is required for maximized yield in order to increase wrapper and binder grades. Additional site years and N application rates should be further tested in these environments in order to further refine these recommendations.