Abstract
Growth and production of arabica coffee are affected by seedling quality which is depends on genotype and seedling maintenance such as fertilizer Urea. Th objective of this research was to examine the effect of arabica coffee genotype and fertilizer Urea on the phenotypic and genetic performance of seedlings. The experiment was done at the greenhouse of Agriculture Faculty of Nommensen HKBP University in Medan. Seven Arabica coffee genotypes of from seven coffee garden in Subdistrict Dolok Sanggul and four level of fertilizer Urea were used. Plant height, stem diameter, leaf number, leaf area, and its ratio were observed. The result revealed that significant interaction of ratio of leaf number and stem diameter proves that the certain dosage of Urea and certain genotype and will give the higest performance. Heritabilites coefficient, advance of genetic, and genotypic coefficient of variations were low. Phenotypic coefficient of variations of were low, moderate and high. Phenotypes and phenotypic ratios correlated highly significant.
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