Journal of Scientific Agriculture <p><em>Journal of Scientific Agriculture (JSA)</em>&nbsp;is an international, peer-reviewed, open-access journal, published by the Update Publishing House.</p> Update Publishing House en-US Journal of Scientific Agriculture 2184-0261 Performance evaluation of improved mung bean (Vigna radiata (L.) Wilczek) varieties at low moisture areas East Shewa, Oromia, Ethiopia <p>Mung bean is a useful crop in drier areas and has a good potential for crop rotation and relay cropping with cereals using residual moisture. The experiment was conducted at Adami Tulu Agricultural Research Center (ATARC), Lume and Dugda during 2018 and 2019 with the objective to identify adaptable and high yielder mung bean varieties for East Shewa Zone and similar agro ecologies. Four released mung bean varieties Shewa robit, Beroda, N-26 and Arkebe used as planting material. The experiment was laid down in Randomized Complete Block Design (RCBD) with three replications. The plot size was 1.8m × 2.5 m (4.5 m<sup>2</sup>) having 6 rows and a spacing of 0.30 m between rows and 50 cm between replication, 1 m between blocks. Data’s like height (cm), number of pods per plant, number of seeds per pod, days to days to flowering, days to maturity, grain yield (kg ha<sup>-1</sup>), 100 seed weight (g) were collected and analyzed using SAS software. The combined analysis of variance showed that there was significant variation at (P≤0.05 and P≤0.01) among the studied varieties, locations, and year main effect. There were also significant interaction effect on location by year, varieties by year and location by varieties by year for grain yield and other yield components. But non-significant on varieties by location for all traits except plant height and indicated those varieties were performed similarly across the locations. Shewa Robit variety had a higher grain yield (1607.4 kg ha<sup>-1</sup>) followed by N-26 (1542 kg ha<sup>-1</sup>) and Beroda (1466.1 kg ha<sup>-1</sup>). While Arkebe Variety had a lower grain yield (893.4 kg ha<sup>-1</sup>) as compared with other varieties. Therefore Shewa Robit and N-26 were recommended for the study area and similar agro-ecologies.</p> Temesgen Dinsa Urgaya Balcha Fayisa Benya Mihratu Fufa Copyright (c) 2022 Temesgen Dinsa, Urgaya Balcha, Fayisa Benya, Mihratu Fufa 2022-02-23 2022-02-23 1 3 10.25081/jsa.2022.v6.7289 Effect of growth regulators concentrations on in vitro multiplication of three elite sugarcane (Saccharum officinarum L.) Genotypes using shoot tip culture <p>Conventional vegetative propagation of sugarcane generally has low multiplication rate and allows distribution of diseases. Micropropagation is the only practical means of achieving rapid, large-scale production of disease-free quality planting material. Experiments on shoot tip culture initiation and shoot multiplication were laid out in completely randomized design with 2x3x3 and 4x5x3 factorial treatment arrangements respectively. Data were subjected to analysis of variance (ANOVA) and significant means were separated using Duncan's multiple range tests. With regard to shoot multiplication, genotype Q200 showed a maximum of 13.59 shoots per explant with 5.83cm shoot length on a medium fortified with 2 mg/l BAP alone, while genotype Q217 produced a maximum of 15.28 shoots per explant with 5.37cm mean shoot length on a medium supplied with 2.0 mg/l BAP and 0.25 mg/l kinetin. Likewise, Co-0238 produced a maximum of 13.56 shoots per explant with a mean shoot length 6.50 cm on medium fortified with 1.5 mg/l BAP + 0.5mg/l kinetin.</p> Gerema Amente Tileye Feyissa Copyright (c) 2022 Gerema Amente, Tileye Feyissa 2022-02-24 2022-02-24 4 8 10.25081/jsa.2022.v6.7267 Soil physicochemical properties in respect to plant health in Ganodermainfested oil palm plantation <p>Basal stem rot caused by <em>Ganoderma boninense</em> is a major disease of oil palm in Indonesia. Environmental factors associated with disease can be used as the basis for developing disease control. This study aims to describe the physical and chemical properties of oil palm plantations land mineral soil land that is infested with basal stem rot. Soil composite samples were randomly collected from diseased and healthy palm circle from an oil palm plantation in Mesuji, South Sumatra. The results showed that the texture and nutrient status of diseased and healthy plants were not significantly different, namely they had the same low analytical values ​​in terms of the content of N, C-organic, CEC, Mg, Ca, Na, and K<sub>2</sub>O. The ratios of C/N, exchangeable K and exchangeable acidity in healthy and diseased soils were both moderate to high. The content of available P and total P was very high (43−134 ppm) and was found to be higher in the soil of diseased plants than in healthy plants. These results indicated that high availability of P nutrients may favor <em>G. boninense</em> infection in oil palm plantation.</p> Shervinia Dwi Ayundra Suwandi Suwandi Siti Herlinda Harman Hamidson Ruli Wandri Dwi Asmono Copyright (c) 2022 Shervinia Dwi Ayundra, Suwandi Suwandi, Siti Herlinda, Harman Hamidson, Ruli Wandri, Dwi Asmono 2022-02-24 2022-02-24 9 13 10.25081/jsa.2022.v6.7446 Correlation and path coefficient studies for yield and its components of upland rice (Oryza sativa L.) in North Western Ethiopia <p>Rice is the major source of calories and third largest crop after maize and wheat by productivity. The aim of the present study was to determine the correlations between grain yield and its contributing traits and to measure the direct and indirect effects of those traits on grain yield in upland rice. Sixteen upland rice genotypes were tested using RCBD with three replications at Pawe district (on station and on farm) during 2016/2017 main cropping season. The estimates of genotypic and phenotypic correlation coefficients between nine characters were computed and also the direct and indirect effects. The results obtained indicated that estimates of genotypic correlation coefficients between nine characters were generally different in sign but higher in magnitude than the corresponding phenotypic correlation coefficients. Days to maturity and plant height were showed strong positive and significant phenotypic and genotypic correlations with days to 50% heading at on farm level. Whereas, thousand seed weight was exhibited strong positive and significant phenotypic and genotypic correlations with days to 50% heading followed by panicle length at on station level. The highest positive both phenotypic and genotypic direct effect on grain yield were exerted by days to heading followed by panicle length and number of filled grain per panicle. In contrast, high order of negative both phenotypic and genotypic indirect effects were extended by panicle length on grain yield via days to maturity (-0.167), thousand seed weight (-0.162) and plant height (-0.09). The direct effects of the remaining six characters were too low to be considered important and the rest of the estimates of indirect effects obtained in path analysis were negligible. Generally, it can be concluded that there is a favorable situation for obtaining high response to selection in improving yield and its components in upland rice.</p> Desta Abebe Belete Atsedemariam Tewachew Mulugeta Bitew Tafere Mulualem Copyright (c) 2022 Desta Abebe Belete, Atsedemariam Tewachew , Mulugeta Bitew, Tafere Mulualem 2022-02-25 2022-02-25 14 19 10.25081/jsa.2022.v6.7253 Genetic analysis of yield related traits in landrace × commercial watermelon hybrids <p>Watermelon [<em>Citrullus lanatus</em> var <em>lanatus</em> L.] is a major xerophytic crop originating in Africa especially grown in subtropical and tropical parts of the world. However, few adapted varieties are available to promote greater yield and make watermelon a viable commercial crop of choice. Path analysis and combining ability was carried out for yield related traits among three popular local landraces; Landrace1, Landrace 2 and Landrace 3 collected in Zimbabwe and three commercial watermelon varieties ‘Congo’, ‘Charleston Grey’ and ‘Crimson Sweet’ in plots arranged in an RCBD replicated 3 times. A complete diallel mating design was used to generate 36 F<sub>1</sub> genotypes which together with the parents were evaluated for several quantitate traits. Data on correlations, path analysis, GCA and SCA between fruit yield and other traits were computed using Microsoft Excel and GenStat 17. Individual fruit weight (FIW) and the number of fruits per plant (NF) were found to be significantly linked with final fruit yield. Significant positive correlations were also observed on NF and number of female flowers (NFF), number of vines (NV), and FIW and these traits could be recommended as reliable selection indicators for creating high yielding watermelon genotypes. Path analysis showed that FIW and NF were the most important contributors to watermelon yield. GCA and SCA effects were significant and positive for yield which indicates that the traits are controlled by both additive and non-additive genes. ‘Crimson Sweet’ and ‘Landrace 1’ were the best pollen sources whereas ‘Landrace 1’ and ‘Landrace 2’ were the highest yielders when used as female parents. Overall, results from this study identified usable yield related proxies and need to incorporate local landraces germplasm in watermelon improvement.</p> T. Nyurura M. Maphosa Copyright (c) 2022 T. Nyurura, M. Maphosa 2022-03-18 2022-03-18 20 24 10.25081/jsa.2022.v6.7477