Research Article Determination of the Appropriate Blended Inorganic Fertilizer RateRecommendationfortheOptimalCommonBean(Phaseolus vulgaris L.) Grain Yield and Profitability in the Dawuro Zone, Ethiopia Berhanu Bilate Daemo , 1 Getahun Bore Wolancho , 1 and Dawit Dalga Wakalto 2 1 Department of Plant Science, Wolaita Sodo University, Dawuro Tarcha Campus, P.O. Box 138, Tarcha, Ethiopia 2 College of Agriculture, Wolaita Sodo University, P.O. Box 138, Wolaita Sodo, Ethiopia Correspondence should be addressed to Berhanu Bilate Daemo; berhanubil@gmail.com Received 21 September 2023; Revised 11 April 2024; Accepted 25 April 2024; Published 20 May 2024 Academic Editor: Maria Serrano Copyright © 2024 Berhanu Bilate Daemo et al. Tis is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Soil fertility decline is a signifcant factor afecting crop production. In a specifc area, fertilizer application for a crop depends on soil type and proftability. Moreover, optimizing chemical fertilizer utilization in crop production is crucial from both environmental and economic perspectives. However, there is limited information available on the optimum NPSB fertilizer rate for common bean production in the study area. Tus, the study aimed to establish area-specifc NPSB fertilizer rate recommendations for optimal grain yield and proftability of common bean. Te feld experiment was conducted in two locations in the 2019 and 2020 cropping seasons. Te treatments included 0, 25, 50, 75, 100, 125, 150, 175, and 200 kg·ha −1 NPSB fertilizer rates, and they were planted using a randomized complete block design with three replications. Te combined location analysis of variance indicated that the ap- plication of NPSB fertilizer signifcantly infuenced plant height, number of pods per plant, number of seeds per pod, hundred-seed weight, biomass yield, grain yield, and harvest index. Te highest grain yields (2815kg·ha −1 and3433kg·ha −1 ) were recorded with the application of a 125 kg·ha −1 NPSB blended fertilizer rate, while the lowest grain yields (1429kg·ha −1 and1500kg·ha −1 ) were produced from the nonfertilizer applied plot in Deneba and Wara, respectively. Te combined location mean showed that the maximum grain yield (3124kg·ha −1 ), followed by 2710 kg·ha −1 , was produced by the application of 125 and 100 kg·ha −1 NPSB fertilizer rates, re- spectively. Te data indicate that raising the NPSB fertilizer rate from 0 to 125 kg·ha −1 would greatly boost grain yield in the common bean in both locations in a similar manner. Te economic analysis revealed that applying 125 kg·ha −1 of NPSB fertilizer earned the highest net benefts (140453.2ETB·ha −1 ) with the highest marginal rate of return (1745.26%). Terefore, for high yield and proftability of common bean, a rate of 125 kg·ha −1 NPSB fertilizer is suggested in the study area and similar agro-ecological zones. 1. Introduction Te common bean, scientifcally known as Phaseolus vul- garis L., originated in Central and South America and has been cultivated since ancient times, dating back to 6000 BC in Peru and 5000 BC in Mexico [1]. Te genus Phaseolus encompasses 80 cultivated and wild species, with the common bean exhibiting signifcant variation in various traits, such as growth habits, vegetative traits, and pod and seed characteristics [2–4]. Despite the abundance of legume species, the common bean is the most consumed by humans globally. It is estimated to provide over 50% of the dietary protein needs of households in sub-Saharan Africa, yet its positive impact on cropping systems is often overlooked [4, 5]. Common beans are highly valued by low-income individuals who rely on them as a primary source of nu- trition due to their afordability compared to meat and fsh [3, 6]. Nutritionists highlight their high protein content and rich mix of essential nutrients, including carbohydrates, dietary fber, iron, and zinc, making them an ideal food Hindawi International Journal of Agronomy Volume 2024, Article ID 7169608, 12 pages https://doi.org/10.1155/2024/7169608