Table 1 Spearman rank correlation and Pearson lineal correlation of L. crescens cultures in M15 medium. Correlations were established among the concentration of ammonia, the increase of pH and the growth (OD₆₀₀) of L. crescens. The three variables are positively and highly correlated with correlation coefficients ranging from 0.88 to 0.96

From: Growth parameters of Liberibacter crescens suggest ammonium and phosphate as essential molecules in the Liberibacter-plant host interface