Evaluating the Potential of High-Resolution Visible Remote Sensing to Detect Shiraz Disease in Grapevines

Table 2

The ELISA test results. Samples classified as “healthy” tested negative for GVA, GLRaV-1, -3, and -4; GVA only is grapevine virus A positive (single infection) but GLRaVs negative; GLRaVs only is single or any combination of grapevine leafroll-associated virus-1, -3, or -4 positive but GVA negative; GVA + GLRaVs is coinfection of both GVA and one or more GLRaV-1, -3 or -4.

	Healthy	GVA only	GLRaVs only	GVA + GLRaVs	Total
Riverland	23	3	0	16	42
Barossa	19	7	6	14	46