Effect of Planting Time and Fertilizer Levels on Growth, Yield and Economics of Beta-Carotene Rich Bari Sweet Potato

Bangladesh Journal of Agricultural Research Pub Date : 2023-11-29 DOI:10.3329/bjar.v47i3.69120

Mrh Mondol, M. Prodhan, MT Rahman, MM Islam, MB Anwar

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Abstract

The experiment was conducted at the Tuber Crops Research Sub-Centre, Bangladesh Agricultural Research Institute (BARI), Bogura, Bangladesh during rabi 2020-2021 to investigate growth, yield and profitability of the beta-carotene rich of sweet potato var. BARI Mistialu-12 as influenced by the date of plantings and fertilizer doses. The experiment consisted four levels of planting dates viz. D1 = 30 October, D2 = 10 November, D3 = 20 November and D4 = 30 November along with four levels of fertilizers viz. F0 = control, F1= 60-55-80 kg of NPK, F2 = 80-75-100 kg of NPK and F3= 100-95-20 kg of NPK fertilizer per hectare. The experiment was laid out in a spilt plot design with three replications assigning planting dates in the main plots and fertilizer doses in the sub-plots. The results indicated that among all treatment combinations planting on 20 November with 100-95-120 kg of NPK fertilizer per hectare performed better in considering length of tubers (13.57 cm), breadth of tubers (41.95 cm), number of tubers per plant (9.93), yield (46.99 t ha-1), gross margin (Tk. 795,131/ha) and BCR (4.62). Marketable yield increased with the increasing of fertilizer doses. Bangladesh J. Agril. Res. 47(3): 343-353, September 2022

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种植时间和肥料水平对富含β-胡萝卜素的巴里甘薯的生长、产量和经济效益的影响

该试验于 2020-2021 年孟加拉农业研究所（BARI）位于孟加拉博古拉的块茎作物研究分中心进行，目的是研究富含β-胡萝卜素的甘薯变种 BARI Mistialu-12 的生长、产量和收益率受种植日期和肥料剂量的影响。试验包括四个级别的种植日期，即 D1 = 10 月 30 日、D2 = 11 月 10 日、D3 = 11 月 20 日和 D4 = 11 月 30 日，以及四个级别的肥料，即 F0 = 对照、F1 = 60-55-80 公斤氮磷钾、F2 = 80-75-100 公斤氮磷钾和 F3 = 每公顷 100-95-20 公斤氮磷钾。试验采用三重复的散点设计，在主小区分配种植日期，在副小区分配肥料剂量。结果表明，在所有处理组合中，11 月 20 日种植、每公顷施用 100-95-120 公斤氮磷钾肥料的结果在块茎长度（13.57 厘米）、块茎宽度（41.95 厘米）、单株块茎数（9.93）、产量（46.99 吨/公顷）、毛利率（795 131 塔卡/公顷）和生产率（4.62）方面表现较好。可销售的产量随着肥料剂量的增加而增加。孟加拉国农业期刊》（Bangladesh J. Agril.47(3)：343-353, September 2022

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Bangladesh Journal of Agricultural Research

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