Analyses of growth, yield and agronomic factors of red variant roselle (Hibiscus sabdariffa L.)

• Published in: Advances in horticultural science Vol. 17; no. 2; pp. 102 - 104
• Main Authors: Babatunde, F.E., Auwalu, B.M.
• Format: Journal Article
• Language: English
• Published: Department of Horticulture, University of Florence 01-01-2003
• Subjects: Agricultural economics; Calyx; Coefficients; Correlation coefficients; Leaves; Plants; Seed weight; Seeds; Sowing date; Vegetation canopies
• ISSN: 0394-6169; 1592-1573

Growth and yield data obtained from the response of roselle to some agronomic practices were correlated and regressed. Red variant roselle calyx yield was found to be very strongly correlated with growth parameters such as canopy diameter, number of branches per plant and number of leaves per plant. Within the yield components, there was a highly significant correlation (P ≤ 0.01) between calyx weight per ha and number of calyces per plant as well as seed weight per ha. Yield analysis indicated that the direct contribution of canopy diameter and number of branches per plant were the main yield contributing factors in 1999, while canopy diameter and number of leaves per plant were the main yield contributing factors in 2000. The total contributions (direct and combined) were found to be 56.61% and 36.87% in 1999 and 2000, respectively. Regression analysis showed that yield and yield components in roselle cultivation were mainly determined by the agronomic practices such as sowing dates, intra-row spacings and nitrogen levels.