Effect of rhizobial inoculants and micronutrients on yield and yield components of faba bean (Vicia faba L.) on vertisol of Wereillu district, South Wollo, Ethiopia

Abstract

Nitrogen fixation by legumes like faba bean is a cheap way of fixing atmospheric nitrogen to plant available form. However, the inoculation of grain legumes with rhizobium bacteria along with the addition of micronutrients is poorly researched in Amhara Region of Ethiopia. Thus a study to examine the effects of rhizobium leguminosarum (var vicae) strains and micronutrients on nodulation, growth, and yield of faba bean was conducted in Wereillu district of Amhara Region, Ethiopia during the rainy season of 2018. The treatments comprised three faba bean strains (un-inoculated, EAL-1018, EAL-1035 and EAL-17) and two micro nutrients (without, zinc, boron) arranged in a randomized complete block design with three replications. The collected data on yield and yield-related parameters were analyzed using Statistical Analysis System (2003), version 9.1 and subjected to Duncan's Multiple Range Test for mean separation when the analysis of variance was significant. The mean separation revealed that the combined effect of EAL-1018 and boron brought significantly (P ≤ 0.05) higher difference on nodule number, nodulation volume, nodule dry weight, biomass yield and grain yield compared to the control. The combined effect of faba bean strain, EAL-1018 and boron gave Samuel Adissie ABOUT THE AUTHORS Samuel Adissie is a researcher in Amhara agricultural research institute, Ethiopia. He has been researching built-in soil fertility management, water management, soil fertility characterization, nutrient stability, problematic soil management, soil micro biology, soil and water management related areas.Enyew Adgo (PhD) is working for Bahir Dar University, Ethiopia at the capacity of full professor in Soil Fertility Management. His area of research focus includes soils, soil erosion and carbon dynamics and land resilience at large.Tesfaye Feyisa (PhD) is senior researcher in soil fertility and plant nutrition at Amhara Agricultural Research Institute (ARARI). He has conducted various researches on soil fertility management (through inorganic and organic amendments), soil acidity management, integrated soil fertility management and soil quality indicators. Currently, he is a director for Soil and Water Research Directorate at ARARI.

Nodulation and Growth Promotion of Chickpea by Mesorhizobium Isolates from Diverse Sources

“…Higher nodule weights were further observed for the light variety compared to ICCV3203 and ICCV3110 genotypes of chickpea. This is consistent with previous reports such as those conducted on faba bean in Ethiopia [75] and chickpea in Tunisia and Ethiopia [76,77], where inoculation with different strains yielded varying nodule numbers and weights. Moreover, varying effects of the Mesorhizobium strains on the shoot dry weights, average heights, and symbiotic efficiencies of different chickpea genotypes were observed.…”

Manure Fertilization for Soybean Crop Production Inoculated with Rhizobium Bacteria Catalyzed by some Micronutrients Foliar Spraying

“…This confirms the effective role of micronutrients and their effect on the symbiotic fixation of nitrogen. This results was in line with the study of Adissie et al (2020) whom reported that inoculation of faba bean with both strain and micronutrients could increase seeds No./ plant and 100-seed weight. The highest seeds No./ plant and 100seed weight produced by RhM+Pm treatment (T9) may be attributed to its ability to enhanced utilization of growth factors, and improved nodule development, metabolic processes, easy availability of nutrients and root growth.…”

“…Inoculation with rhizobium produced significantly taller soybean plants (53.4 cm) compared to that (48.9 cm) of un-inoculated plants at the same stage (Lamptey et al, 2014). The results are in accordance with those of Adissie et al (2020) and Ben et al (2019). T9) that are associated with increasing availability of nutrients and their uptake during the early stages and improving meristematic expansion surface area of the leaves and physiological activates in the plants.…”

“…Desta et al (2015) and Aziz et al (2016) reported that pods No./ plant was significantly increased by inoculation with rhizobium strain and Brady rhizobium. Also, Adissie et al (2020) reported that application of rhizobium strain and micronutrients showed insignificant effect on pods No./ plant in both growing seasons.…”

Do Bioinoculants Affect Resident Microbial Communities? A Meta-Analysis

“…For example, the same isolate of fungi can be beneficial on some plant genotypes (Oliveira et al, 2017;Garg and Singh, 2018;Le Pioufle et al, 2019), negative on others (Janoušková et al, 2013;Symanczik et al, 2015;Loján et al, 2017), or have no effect on yet others (Rosa et al, 2020). This is particularly true for microbes with strict host requirements, such as rhizobia (Rebah et al, 2002;Sanz-sáez et al, 2015;Adissie et al, 2020). Whatever the outcome, the connection between plant performance and SMC diversity is paramount to ecosystem stability and resilience.…”