Response of tef (Eragrostis tef [Zucc.] Trotter.) variety to varying seed rates and inter-row spacings for growth, yield and lodging severity in Western Ethiopia

Figures & data

Figure 1. Map of the study area.

Table 1. Analysis of variance on growth, phenological, yield components and lodging severity under different seed rates and row spacing of tef cultivar in Hababo Guduru district, Ethiopia in 2019–2020.

		Growth, phenology, yield components and lodging of tef
Source of variation	DF	DH	DM	PH	NTt	PL	DBMY	GY	SY	HI	LS
Replication	3	0.04	0.11	0.01	0.12	8.03	9.92	0.67	10.31	11.80	6.62
Seed rate (SR)	2	49.00**	52.30**	120.30**	4.12**	2.59^ns	224.79**	119.26**	668.88**	1492.63**	1720.75**
Inter-row spacing (RS)	2	0.25*	14.30**	10.08**	0.07^ns	1.00^ns	133.47**	9.33**	209.29**	278.50**	54.20**
SR * RS	4	4.25**	1.67**	0.41^ns	0.26^ns	0.96^ns	12.24^ns	3.13**	16.40^ns	62.54**	3.50^ns
Error	24	0.06	0.11	0.13	0.21	0.99	10.00	0.29	11.07	9.69	2.96
CV (%)		0.37	0.27	0.28	13.6	1.88	7.0	3.77	10.8	9.4	5.0

Notes: Where DF = degree of freedom, ** and * showed significance at 1% and 5% probability levels, respectively, ns = non-significant at 5% significance level; DH = day to 50% heading, DM = day to 90% maturity, PH = plant height (cm), NTt = number of total tillers, PL = panicle length (cm), DBMY = dry biomass yield (kg plot⁻¹), GY = grain yield (kg plot⁻¹), SY = straw yield (kg plot⁻¹), HI = harvest index (%), and LS = lodging severity (%).

Table 2. Mean values of days to heading, days to maturity, biomass yield, grain yield, and harvest index as affected by the interaction effect of seed rate and inter-row spacing on Guduru tef variety at Hababo Guduru district, Ethiopia in 2019–2020.

	Days to 50% heading			Days to 90% maturity			Biomass yield (kg plot^−1)			Grain yield (kg plot^−1)			Harvest index (%)
	Inter-row spacing (cm)
Seed rate (kg ha^−1)	10	15	20	10	15	20	10	15	20	10	15	20	10	15	20
10	66.0	64.75	64.0	124.0	122	120	48.9	42.7	49.3	12.6	16.4	11.69	25.6	38.5	23.6
15	67.0	64.75	63.0	125.0	123	122	47.2	41.9	49.3	13.3	17.3	11.69	28.2	42.4	23.1
20	68.0	64.00	62.0	127.0	124.	122	45.2	35.4	51.3	14.2	19.8	11.80	31.3	56.1	27.7
LSD (5%)		0.20			0.28			2.66			0.45			2.60

where LSD = least significant difference.

Table 3. Main effects of seed rates and row spacings on plant height (cm), number of total tillers per plant, panicle length (cm), straw yield (kg ha⁻¹), and lodging severity percent of Guduru tef variety at Hababo Guduru district, Ethiopia in 2019-2020.

Treatments	Parameters
Seed rate (kg ha^−1)	PH	NTt	PL	SY	LS
10	127.2^a	3.51^a	53.3^a	33.8^a	24.1^c
15	124.0^b	3.80^a	52.4^b	22.1^b	31.8^b
20	120.8^c	2.69^b	53.0^ab	35.9^a	47.5^a
LSD (0.05)	0.30	0.38	0.83	2.8	1.45
Row spacing (cm)
10	123.1^c	3.4^a	52.6^a	33.5^a	36.6^a
15	124.0^b	3.3^a	53.1^a	32.6^a	34.6^b
20	124.9^a	3.4^a	53.1^a	25.8^b	32.3^c
LSD (0.05)	0.30	0.38	0.84	2.8	1.5
CV (%)	0.28	13.6	1.88	10.8	5.8

Notes: Means in the same column within the same treatment category followed by different letters are significantly different at p < 0.05, probability level. CV: coefficient of variation; NTt: number of total tillers per plant: PH: plant height(cm); PL: panicle length (cm); SY: straw yield (kg plot−¹); LS: lodging severity (%).

Data availability statement

The data that backs up this study's findings is publicly available in figshare.com at https://doi.org/10.6084/m9.figshare.22794620