EC₅₀ values of some title compounds against Xoo, Xac and R. solanacearum^b.

Tested bacteriasl	Compd.	Regression equation	r 2	EC50 (μg mL−1)
Xac	4a	y = 1.1509x + 3.0094	0.9084	53.6 ± 4.5
	4c	y = 0.3984x + 3.9390	0.9265	460.4 ± 2.4
	4d	y = 0.3020x + 4.3584	0.9155	133.2 ± 4.7
	4e	y = 0.5608x + 3.9757	0.9644	67.0 ± 4.9
	BTa	y = 0.3926x + 4.1415	0.9072	153.7 ± 5.9
	TCa	y = 1.7056x + 1.7748	0.9161	77.8 ± 2.3
Xoo	4c	y = 0.7929x + 3.0664	0.9622	274.5 ± 5.0
	4g	y = 0.9379x + 3.2319	0.9558	76.7 ± 6.2
	4n	y = 0.7539x + 3.4235	0.9573	123.3 ± 6.3
	BTa	y = 1.5696x + 1.8988	0.9551	94.5 ± 4.3
	TCa	y = 0.9843x + 3.3369	0.9475	48.9 ± 8.3
RS	4a	y = 0.3081x + 5.3419	0.9157	0.1 ± 3.6
	4b	y = 1.3629x + 3.9942	0.9383	1.0 ± 4.2
	4c	y = 0.6011x + 3.9125	0.9449	64.4 ± 5.6
	4d	y = 0.8807x + 3.5862	0.9583	42.5 ± 8.1
	4e	y = 0.9347x + 4.2405	0.9546	6.5 ± 5.1
	4f	y = 0.3225x + 4.7271	0.9655	7.02 ± 2.8
	4g	y = 0.4227x + 5.4036	0.9696	0.1 ± 0.4
	4h	y = 0.3235x + 4.3949	0.9113	74.2 ± 6.1
	4i	y = 2.0693x + 2.9527	0.9540	9.8 ± 2.1
	4j	y = 0.5553x + 5.2478	0.9379	0.3 ± 0.6
	4k	y = 1.5277x + 3.5958	0.9378	8.3 ± 0.9
	4l	y = 0.4623x + 5.1549	0.9939	0.4 ± 4.5
	4m	y = 1.3267x + 2.5265	0.9339	73.2 ± 6.1
	4n	y = 0.6065x + 3.9014	0.9395	64.8 ± 4.8
	4o	y = 2.1930x + 2.0260	0.9601	24.3 ± 5.2
	4p	y = 1.1930x + 3.0290	0.9301	22.7 ± 4.8
	4q	y = 0.2018x + 4.6019	0.9719	93.9 ± 7.8
	4r	y = 2.3888x + 1.4419	0.9198	30.8 ± 5.1
	4s	y = 0.4483x + 5.3221	0.9351	0.2 ± 0.2
	4t	y = 0.4271x + 5.3495	0.9695	0.1 ± 0.5
	4u	y = 0.6484x + 3.7942	0.9415	72.4 ± 5.5
	4v	y = 0.6851x + 4.7031	0.9378	2.7 ± 3.5
	4w	y = 0.9945x + 3.4690	0.9266	34.6 ± 2.8
	BTa	y = 1.0223x + 3.2674	0.9095	49.5 ± 8.5
	TCa	y = 0.7337x + 3.8570	0.9042	36.1 ± 3.9

^aBT: bismerthiazol; TC: thiadiazole-copper.

^bA commercial agricultural antibacterial agent bismerthiazol and thiadiazole-copper were used for comparison of antibacterial activities.