Table 2.

FBG disease incidence and percent severity index contingency table for logistic regression model analysis

Independent variable	Variable classes	No. of fields with FBG (%)
		Incidence		Percent Severity index
		≤35%	>35%	≤25%	>25%
Year	219	120	163	207	76
	2020	213	503	459	257
Region	Oromia	237	189	301	125
	Amhara	65	418	321	162
	Tigray	31	59	45	45
Zone	N/Shewa (Oromia)	38	99	60	77
	S/W/Shewa	34	3	37	-
	W/Shewa	89	56	115	30
	Arsi	64	27	76	15
	F/Special Zone	12	4	13	3
	N/Shewa(Amhara)	34	126	103	57
	S/Gondar	7	145	107	45
	S/Wollo	24	147	111	60
	S/Tigray	31	59	44	46
Crop growth stage	Seedling	8	6	10	4
	Vegetative	42	94	104	32
	Flowering	169	246	308	107
	Podding	105	242	196	151
	Maturity	9	78	48	39
Crop densitya	Low	60	141	117	84
	Medium	198	320	335	183
	High	75	205	215	65
Cropping systemb	Rotation	323	666	656	333
	Mon-cropping	2	8	2	8
Slope of fieldc	Low	127	270	286	111
	Medium	186	342	346	182
	High	20	54	34	40
Cropping pattern	Sole	566	317	575	308
	Mixed	100	16	92	24
Altituded	Low	85	18	101	2
	Medium	163	203	265	101
	High	85	445	301	229
Weed densitye	low	220	253	345	128
	High	113	413	321	205
Soil type	Cambisole	209	458	451	216
	Vertisol	118	194	209	103
	Nitosol	6	14	11	9
fertilizer application	Inorganic	207	266	367	106
	Organic	16	58	42	32
	Not applied	110	342	258	194
Drainage method	Flat	307	630	620	317
	Raised	26	36	47	15
Crop nearby	Cereal	302	528	557	273
	Legume	34	120	111	43
	Vegetable	3	12	4	11
Fungicide	Sprayed	231	243	420	54
	Unsprayed	103	422	246	279

FBG, faba bean gall.

^aTarget copy number was estimated based on the linear regression of the standard curve in Fig. 4.

^bTt = 1 equals to 1 min.