Tomato seedlings showing crown and root rot symptoms (FORL biotype symptoms). Analysis of FORL sensitivity to different ZnNO3 concentrations: Figure 2 shows effect of four ZnNO3 concentrations on FORL mycelial growth.

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... ratios for the respective treatments were determined by use of the following formula: í µí±€í µí±¦í µí±í µí±’í µí±™í µí±–í µí±Ž í µí°·í µí±–í µí± í µí± í µí°·í µí±–í µí±Ží µí±ší µí±’í µí±¡í µí±’í µí±Ÿ í µí°´í µí±Ÿí µí±’í µí±Ž = í µí¼‹í µí±Ÿ 2 = í µí¼‹ ( í µí°´í µí±£í µí±’í µí±Ÿí µí±Ží µí±”í µí±’ í µí°· 2 ) í µí°¼í µí±›ℎí µí±–í µí±í µí±–í µí±¡í µí±–í µí±œí µí±› í µí± í µí±Ží µí±¡í µí±–í µí±œ = (í µí°´í µí±£í µí±’í µí±Ÿí µí±Ží µí±”í µí±’ í µí° ¶í µí±œí µí±›í µí±¡í µí±Ÿí µí±œí µí±™ í µí°´í µí±Ÿí µí±’í µí±Ž − í µí°´í µí±£í µí±’í µí±Ÿí µí±Ží µí±”í µí±’ í µí±‡í µí±Ÿí µí±’í µí±Ží µí±¡í µí±ší µí±’í µí±›í µí±¡ í µí°´í µí±Ÿí µí±’í µí±Ž) í µí°´í µí±£í µí±’í µí±Ÿí µí±Ží µí±”í µí±’ í µí° ¶í µí±œí µí±›í µí±¡í µí±Ÿí µí±œí µí±™ í µí°´í µí±Ÿí µí±’í µí±Ž STATISTICAL ANALYSIS Statistical Analysis Software (SAS, 2010) was used to carry out regression analysis of the effect of different ZnNO3 concentrations on the mycelial growth of FORL. RESULTS Pathogenicity test for FORL: Pathogenicity of FORL was determined by occurrence of crown and root rot as shown in Figure 1. This differentiated it from F. oxysporum f. lycopersici (FOL; 1.2.3) infections which affects fine roots and vascular systems resulting in wilting of the seedlings. ...