Integrated Management of Late Blight Potato (Phytophthora infestans, (Mont) de Bary) Disease through Potato Varieties and Fungicides in Lay-Armachiho District, Ethiopia

Table 6

Interaction effects of fungicide and potato variety on relative yield loss of late blight potato disease.

Variety	Fungicide	MY (t/ha)	UMY (t/ha)	TY (t/ha)	RYL (%)
Local	NO	2.30^h	8.33^a	10.63^f	24.60^bc
	MM	5.78^g	6.71^ba	12.49^fe	11.41^dc
	RR	7.63^gf	6.476^bac	14.10^dfe	0.00^d
Jalene	NO	9.48^ef	6.01bc	15.49^dcf	44.20^ba
	MM	22.2^c	5.55^bc	27.75^b	0.04^d
	RR	23.14^c	4.62^dc	27.76^b	0.00^d
Gudene	NO	8.33^gf	6.94^ba	15.27^dce	19.46^c
	MM	11.57^ed	5.55^bc	17.12^dc	9.70^dc
	RR	14.34^d	4.62^dc	18.96^c	0.00^d
Belete	NO	12.03^ed	5.08^bdc	17.11^dc	54.34^a
	MM	31.25^b	3.46^ed	34.71^a	7.39^dc
	RR	35.64^a	1.84^e	37.48^a	0.00^d
Significance			ns		ns
LSD (0.05%)		2.84	2.00	3.98	17.04
CV (%)		11.01	21.93	11.32	21.74

ns, non significant or significant at (%) or (%) respectively, means within the same column followed by the same letter(s) are not significantly different at (%); LSD = least significant difference, CV (%) = coefficient of variation, MY = marketable yield, UMY = unmarketable yield, TY = total yield, t/ha = ton per hectare, NO = control, MM = mancozeb and RR = ridomil fungicide.