Abstract
A field experiment was conducted on 2019 growing season to evaluate effects of different rates of nitrogen, phosphorus, and sulfur on growth and yield of garlic under supplemental irrigation. A local variety, Tuma, was used and treated with six rates of NPS (T1 (0 : 0 : 0 kg/ha NPS) (control), T2 (19 : 38 : 7 kg/ha NPS), T3 (28.5 : 57 : 10.5 kg/ha NPS), T4 (47.5 : 76 : 14 kg/ha NPS), T5 (47.5 : 95 : 17.5 kg/ha NPS), and T6 (57 : 114 : 21 kg/ha NPS)). The experiment was laid out in randomized complete block design and replicated three times. Data were collected for days to 50% emergence, plant height, leaf number, leaf length, bulb weight, and total bulb yield. SAS version 9.2 was used to analyze the data. Means were separated using Fisher’s test at 5% level of significance. All parameters were significantly P < 0.05 affected by the rates of NPS. The early days to 50% emergence (16) was recorded from T6 (57 : 114 : 21 kg/ha NPS), whereas the late days to 50% emergence was recorded from the control treatment (T1). Significantly highest leaf length (41.51 cm), leaf number (13.63), plant height (61.19 cm), bulb weight (39.44 g), and total bulb yield (14.91 ton ha−1) were recorded from T6 (57 : 114 : 21 kg/ha NPS). Therefore, from the result of this study, it can be concluded that the maximum total bulb yield of garlic was obtained with the application of 57 : 114 : 21 kg/ha NPS rate.
Highlights
Garlic (Allium sativum L.) belongs to the Alliaceae family, and it is considered as the most important Allium crop and ranks second after onion in the world [1]
Treatments and Experimental Design. e treatment consisted of one local variety (Tuma) and six levels of NPS (T1 (0 : 0 : 0 kg/ha NPS), T2 (19 : 38 : 7 kg/ha NPS), T3 (28.5 : 57 : 10.5 kg/ha NPS), T4 (47.5 : 76 : 14 kg/ha NPS), T5 (47.5 : 95 : 17.5 kg/ha NPS), and T6 (57 : 114 : 21 kg/ha NPS)). e experiment was laid out in randomized complete block design with three replications. us, there were a total of six treatments which account for eighteen experimental plots. e spacing between rows was 30 cm, and the spacing between plants was 10 cm
Analysis of the variance showed that T6 which was fertilized with the rate of 57 : 114 : 21 kg/ha NPS emerged 16 days after planting whereas T1 showed delayed emergence (Table 1). e result is in agreement with Getachew and Temesgen [8] who observed early emergence (9 days) by the application of 105 : 92 : 17 kg/ha NPS. is result generally indicated that the highest rate of NPS boosted the garlic bulbs to emerge faster. e hastened duration of emergence might be attributed to the influence of available N, P, and S on root initiation and development which might have led to early shoot emergence
Summary
Received 10 June 2021; Revised 30 June 2021; Accepted 28 July 2021; Published 3 August 2021. A field experiment was conducted on 2019 growing season to evaluate effects of different rates of nitrogen, phosphorus, and sulfur on growth and yield of garlic under supplemental irrigation. Data were collected for days to 50% emergence, plant height, leaf number, leaf length, bulb weight, and total bulb yield. All parameters were significantly (P < 0.05) affected by the rates of NPS. Highest leaf length (41.51 cm), leaf number (13.63), plant height (61.19 cm), bulb weight (39.44 g), and total bulb yield (14.91 ton ha−1) were recorded from T6 (57 : 114 : 21 kg/ha NPS). Erefore, from the result of this study, it can be concluded that the maximum total bulb yield of garlic was obtained with the application of 57 : 114 : 21 kg/ha NPS rate Highest leaf length (41.51 cm), leaf number (13.63), plant height (61.19 cm), bulb weight (39.44 g), and total bulb yield (14.91 ton ha−1) were recorded from T6 (57 : 114 : 21 kg/ha NPS). erefore, from the result of this study, it can be concluded that the maximum total bulb yield of garlic was obtained with the application of 57 : 114 : 21 kg/ha NPS rate
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