Effect of plant spacing and sowing dates on the growth and yield of radish (Raphanus sativus) in Rupandehi district, Nepal

Shristi Parajuli, P. Dhital
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Abstract

A field experiment was conducted from mid-April to mid-June 2022 in Rupandehi to evaluate the growth and yield of radish maintained in varied plant spacing at differed sowing dates. The study was aimed to compare the growth, production and economics of radish in Rupandehi district under different plant spacing and sowing dates and to evaluate the interaction between these two factors. Four plants spacing (10 cm, 20 cm, 30 cm and 40 cm) with constant row spacing was maintained at two sowing dates (Chaitra 29 and Baisakh 14). The treatments were arranged in two factorial Randomized Complete Block Design (RCBD) with 3 replications. The data were collected on 30 DAS and 45 DAS. The obtained data were recorded and analyzed using MS-Excel and R-studio, respectively. The results revealed that the highest yield was obtained from plant spacing of 20 cm (28.20 t/ha). However, individual plant weight was higher in wider spacing. Plant spacing of 20 cm showed significantly highest plant height (24.52 cm), number of leaves per plant (22.37) and leaf length (23.36 cm). Leaf blade width (10.67 cm) and petiole length (3.05 cm) was significantly highest in plant spacing of 30 cm. Early sowing date showed significantly better results for all growth and yield parameters and yield except leaf blade width. Higher gross return, net return and B:C ratio was observed in plant spacing of 20 cm and early sowing date. The study concluded that plant spacing of 20 cm and earlier sowing date was ideal for maximum growth and yield of radish in Rupandehi district.
株距和播种期对尼泊尔鲁班德希县萝卜(Raphanus sativus)生长和产量的影响
2022 年 4 月中旬至 6 月中旬,在鲁潘德希进行了一项田间试验,以评估不同播种日期、不同株距下萝卜的生长和产量。该研究旨在比较不同株距和播种日期下鲁班德希地区萝卜的生长、产量和经济效益,并评估这两个因素之间的相互作用。在两个播种期(Chaitra 29 和 Baisakh 14),保持四种株距(10 厘米、20 厘米、30 厘米和 40 厘米)和恒定行距。处理采用双因子随机整群设计(RCBD),3 次重复。数据分别在 30 DAS 和 45 DAS 收集。所得数据分别用 MS-Excel 和 R-studio 进行记录和分析。结果显示,株距为 20 厘米的产量最高(28.20 吨/公顷)。然而,株距越宽,单株重量越高。株距为 20 厘米时,植株高度(24.52 厘米)、单株叶片数(22.37)和叶片长度(23.36 厘米)明显最高。株距为 30 厘米时,叶片宽度(10.67 厘米)和叶柄长度(3.05 厘米)明显最高。除叶片宽度外,早播对所有生长和产量参数及产量都有明显的促进作用。株距为 20 厘米、播种期较早的作物毛收益、净收益和 B:C 比值较高。研究认为,20 厘米的株距和较早的播种期是鲁班德希地区萝卜生长和产量最大化的理想选择。
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