Prevalence and Host Resistance to Common Bean Rust Disease in Western and Central Kenya

Table 2

Factors affecting incidence and severity of bean rust in western and central Kenya.

Factor	Factor classification	Bean rust^1
		Incidence (%)	Severity
Altitude	1200–1800 masl	58.33^a	3.19^a
	>1800 masl	57.24^a	2.98^a
	<1200 masl	14.50^b	1.34^b
Cropping system	Sole crop	55.70^a	3.09^a
	Intercrop	54.20^a	2.92^a
Fungicide use	No fungicide spray	57.30^a	3.14^a
	Fungicide spray	35.00^b	1.91^b
Seed source	Certified seed agents	49.50^a	3.05^a
	Local market	56.20^a	3.06^a
	Saved seed	54.70^a	2.96^a
Management of volunteer plants	No management	57.10^a	3.12^a
	Soil incorporation	52.90^b	2.91^a
	Herbicide spray	30.00^c	1.65^b
Debris management	Trash-lines	77.50^a	4.05^a
	Compost manure	65.33^b	3.48^a
	Burn	62.77^b	3.41^a
	Leave on soil surface	59.50^b	3.33^ab
	Livestock feed	47.47^c	2.64^b
	Soil incorporation	45.00^c	2.38^c

¹Means followed by the same letter within a column are not significantly different from one another (). a, b, and c following the values are supposed to show the differences in the means.