Effects of Integrated Application of Vermicompost and Chemical Fertilizer Rates on Tube Yield and Economic Benefit of Potato (Solanum tuberosum L.) in Chilga District, North Western Ethiopia

A field experiment was conducted to test the significant effects of integrated application of vermicompost and different proportionds recomended chemical fertilizer rates on economic benefit, tuber yield and yield attributes. data were collected from plots on which assigned for four vermicompost rates (0, 2.5, 5 and 7.5 t ha-1) and four chemical fertilizer rates (0, 25, 50 and 75% recommended does of chemical fertilizer rate which were laid out in a Randomized Complete Block Design (RCBD) with three replications. data were analyzed using R-software version 4.4.2. Means were separated using the least significant difference test at a 5% probability level. The results showed that all the tested parameters were significantly influenced by vermicompost and chemical fertilizer rates. The combined application of 7.5 t ha-1 VC and 75% RDCF resulted in the maximum values of plant height (73.33 cm), marketable tuber yield (30.22 tha-1), total tuber yield (34.22 tha-1), tuber dry matter content (25.73%) and net benefit (Birr 557,800 ha-1). Hence, combined application of 7.5 t ha-1 VC and 75% RDCF isthe the best treatment for the production of potato in the study area and similar environment.本研究开展田间试验，旨在探究蚯蚓粪（vermicompost，以下简称VC）与不同配比推荐化肥施用量配施对马铃薯经济效益、块茎产量及产量构成要素的影响效应。试验设置4个VC施用量梯度（0、2.5、5和7.5 t·ha⁻¹）与4个化肥施用量梯度（分别为推荐化肥施用量的0、25%、50%和75%，其中推荐化肥施用量缩写为RDCF），采用完全随机区组设计（Randomized Complete Block Design, RCBD），设置3次重复。试验数据采用R软件4.4.2版本进行统计分析，并以5%显著水平的最小显著差数法（Least Significant Difference, LSD）进行均值多重比较。结果表明，VC与RDCF施用量均对所有供试参数存在显著影响。其中，配施7.5 t·ha⁻¹ VC与75% RDCF时，株高（73.33 cm）、商品块茎产量（30.22 t·ha⁻¹）、块茎总产量（34.22 t·ha⁻¹）、块茎干物质含量（25.73%）及净收益（Birr 557800·ha⁻¹）均达到最大值。综上，在本试验区域及类似生态环境中，配施7.5 t·ha⁻¹ VC与75% RDCF是马铃薯生产的最优处理方案。