Assessment of on-farm performance of common bean in central rift valley areas of Ethiopia

Figures & data

Table 1. Description of the large-scale demonstration areas

District	kebele	Location			Total area covered	Mean area covered	Participant farmers
		Latitude	Longitude	Altitude			M	F
Shalla	Awara Gama	038° 26.83’	07° 16.87’	1682	20 (29%)	1	17	3
	Bekele Deya	038° 24.52’	07° 17.29’	1673	10 (14 %)	1.4	7	0
Adama	Mermersa	039° 24.32’	08° 24.6’	1655	7 (10%)	1.8	4	0
	Guraja	039° 22.3’	08° 36.67’	1654	22 (32%)	0.5	36	9
Shashemene	OineChafo	038° 32.76’	07° 13.881’	1799	10 (10%)	1.11	8	1
Total					69	0.81	72	13

Figure 1. The large-scale technology demonstration.

Source: Adopted from Derese (2020)

Table 2. Comparison of Improved Common Bean Production Practices and Farmers’ Practice

Specifics	Improved practices	Farmers practice
Seed rate (t ha^−1)	0.1	0.1–1.2
Seed source	formal	informal/ savings
Planting time	second week of July	first week of July
Use of an improved variety	SER-125, SER-119, and Awash-2	local cultivar (unidentified)
Method of sowing	row planting	row planting
Seed quality standards	90 % germination and 100% purity	unknown
Spacing(cm)	40 x10 cm	not uniform
Nutrient management	0.1 t ha^−1 of NPS	< 0.1 t ha^−1
Weeding	two-three times	one time
Farming situation	rain fed	rain fed

Table 3. Demographic characteristics of target farmers (N = 85)

Location	Land holding	Age	Family size	Farm exp.	Edu. level
Adama	1.4	39	5	19	3
Shalla	2.0	41	7	22	4
Shashemene	2.1	43	9	26	2
Total mean	1.7	40	6	21	3
SD	1.53	11.74	2.92	11.39	3.59

Table 4. Yield performance

Yield	N	Min.	Max.	Mean	S. D
SER-119	21	1.80	3.07	2.49	0.39
SER-125	15	1.80	2.90	2.53	0.27
Awash-2	49	1.40	2.95	2.02	0.38

Table 5. Mean yield performance across locations (ton/ha), (N = 85)

District	Varieties	Mean productivity over year		Mean yield	S.D
		2019 (n = 29)	2020 (n = 56)
Adama	Awash-2	1.91	2.08	2.02	0.38
Shalla	SER-119	2.17	2.85	2.57	.42
	SER-125	2.44	2.57	2.53	0.27
Shasheme	SER-119	-	2.39	2.39	0.36

Table 6. Mean yield of improved common bean varieties and yield advantage over farmers practice (t ha⁻¹)

Location	Variety	LSD yield	Farmers practice	Yield advantage	% advantage
Adama	Awash-2	2.02	1.80	0.22	12.3
Shalla	SER-119	2.57	1.76	0.81	45.6
	SER-125	2.53	1.76	0.77	43.5
Shashmene	SER-119	2.39	1.76	0.63	35.8

Table 7. T-test of yield difference among the varieties

Variety	t	df	Sig(.2-tailed)	Mean difference
Awash-2	4.489	48	.000	0.24653
SER-125	10.929	14	.000	0.75833
SER-119	8.379	20	.000	0.72095

Control mean yield: 1.77 t ha⁻¹

Derese, M. (2020). Large scale agricultural technology demonstration guideline for cluster-based agricultural commercialization. Guideline for EIAR researchers. Unpublished.

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