Effect of Botanical Extracts on Late Blight (Phytopthora infestans) and Productivity of Tomato (Solanum esculentum)

Table 4

Modified Horsfall–Barrat rating scale of late blight disease.

Index	1	2	3	4	5	6	7	8	9	10	11	12
% leaf area affected	0	0–3	3–6	6–12	12–25	25–50	50–75	75–87	87–94	94–97	97–100	100