2023/05/18 by Legesse, Hirpa, Dechassa, Nigussie, Gebeyehu, Setegn +2
#Agriculture #Aluminum #Common bean #Cooking quality #Food #Genotypes lime #Physical quality
paper · doi:10.20372/afnr.v1i1.61
This study was carried out to assess the effects of different concentrations of exchangeable aluminum on seed physical quality of two common bean genotypes grown on lime-treated and lime-untreated acidic soils. Factorial combinations of five rates of aluminum (0.0, 12.5, 25.0, 50.0, and 100.0 mg Al kg soil-1) and two common bean genotypes (New BILFA 58 and Roba 1) were laid out in a completely randomized design with three replications per treatment.The results showed significant differences among aluminum levels and genotypes in relation to dry seed density, seed length, seed width, seed hydration ratio, swelling ratio, water absorption, seed coat proportion, germination percentage, 100 seed weight, cooking time, percent residue (solid loss) in both lime untreated and lime treated soil. However, aluminum by genotype interaction showed a non- significant(P>0.05) difference for almost all physical properties on both soil types except seed width, water absorption, cooking time and percent seed coat. The genotype new BILFA 58 (acid soil tolerant) gave higher values in almost all physical quality of the seed on both lime treated and untreated soil than Roba 1(acid soil sensitive). Lime application had improved the physical quality parameters of both genotypes as compared to lime untreated soil, with the values of 8.6,10.5, 10.9 and 6.7% increments in seed length, seed width, 100 seed weight and germination percentage, respectively. However, lime application reduces number of unsoaked seeds (26.5%) and seed coat proportion (17%) as compared to lime untreated soil. Lime application had no significant effect on cooking time and water absorption of the seeds as compared to lime untreated soil. The study showed aluminum toxicity affects physical bean seed quality. Therefore, screening genotypes tolerant to soil acidity with appropriate agronomic management practices (lime application) can improve bean seed physical quality and has a potential to improve the nutritional status of the people who grow beans on acid soils.