Response of garlic (Allium sativum L.) to nitrogen and phosphorus under irrigation in Lasta district of Amhara Region, Ethiopia

Figures & data

Figure 1. Location of the study.

Table 1. Effects of nitrogen and phosphorus fertilizer application on growth and yield of garlic

Fertilizer (kg ha^−1)		Plant height (cm)			Bulb yield (t ha^−1)			Biomass yield (t ha^−1)
N	P2O5	Year-1	Year-2	Mean	Year-1	Year-2	Mean	Year-1	Year-2	Mean
0	0	47.66	43.40	45.53	5.79	4.18	4.79	6.75	5.14	5.95
46	0	54.40	45.60	50.00	5.76	5.07	5.42	6.32	6.08	6.20
92	0	51.96	47.86	49.91	6.16	5.74	5.95	6.72	6.97	6.84
0	23	48.93	45.13	47.03	5.25	4.79	5.02	650	6.04	6.27
46	23	56.56	52.46	54.51	6.15	5.82	5.99	7.31	7.00	7.15
92	23	55.93	51.93	53.93	5.17	6.84	6.01	5.76	8.35	7.05
0	46	47.33	44.06	45.86	5.43	4.84	5.14	6.30	6.32	6.31
46	46	50.10	46.00	48.05	7.39	5.92	6.66	8.47	7.38	7.93
92	46	54.00	53.26	51.96	6.72	7.48	7.11	7.90	8.61	8.26
0	69	47.66	43.60	45.63	5.45	4.25	4.85	6.28	5.35	5.81
46	69	52.43	48.33	50.38	5.25	5.71	5.48	6.08	6.75	6.42
92	69	56.90	52.80	54.85	7.34	5.86	6.61	7.72	7.29	7.51
LSD (5 %)		10.47	11.66	11.09	1.82	1.49	1.22	2.29	1.73	1.40
CV (%)		9.17	8.60	6.37	18.05	16.94	18.28	19.93	15.12	17.91

Table 2. Partial budget analysis result of the research

Fertilizer (kg ha^−1)		Yield*	Gross benefit*	Cost*	Net benefit*	MRR%
Nitrogen	P2O5
0	0	4.31	134,827.2	0	134,827.2
0	23	4.52	135,650.7	694.87	134,955.8	18.51
46	0	4.87	146,291.4	1114.75	145,176.7	2434.22
0	46	4.62	138,763.8	1389.75	137,374.1	D
46	23	5.39	161,751.6	1809.62	159,942	2124.91
0	69	4.36	130,977	2084.65	128,892.4	D
92	0	5.35	160,706.7	2229.5	158,477.2	D
46	46	5.99	179,865.9	2504.5	177,361.4	2506.82
92	23	5.40	162,248.4	2924.37	159,324	D
46	69	4.93	148,151.7	3199.4	144,952.3	D
92	46	6.39	191,945.7	3619.25	188,326.5	4173.73
92	69	5.94	178,372.8	4314.15	174,058.7	D

* indicates yield is the yield in t ha⁻¹, gross benefit is the benefit in Ethiopian Birr ha⁻¹, Cost is the variable cost in Ethiopian Birr ha^−1- and net benefit is the net benefit in Ethiopian Birr ha⁻¹ while D Stands for dominated treatments MRR stands for marginal rate of return.