Identification of Optimal Concentration of Silicon Application and Its Roles in Uptake of Essential Nutrients in Soybean (Glycine max L.)
- 11 Downloads
We conducted two experiments to identify the roles of silicon (Si) application in the uptake of essential elements by soybean plants. First, we applied five concentrations (1, 2, 4, 6, and 8 mM) of Si (sodium metasilicate) to hydroponically grown soybean plants. Chlorophyll content and chlorophyll fluorescence showed improvement at 1 mM and 2 mM Si treatments as compared to that of the control. The 2 mM Si application exhibited more highly improved chlorophyll fluorescence values as compared to that of 1 mM Si treatment. We regarded 2 mM Si as the proper concentration for soybean plants. Second, we applied 2 mM of Si to 15 soybean cultivars and measured the concentration of nitrogen (N), phosphorus (P), potassium (K), and Si. Si content increased in the Si treatment; however, two cultivars (‘Dachae’ and ‘Jinpung’) showed reduced Si content despite the Si supplementation. The N and K content in several cultivars decreased after Si application to soybean plants, whereas the P content of most of cultivars was slightly increased after Si treatment. Si did not show any correlation with N, P, and K after Si treatment; however, Si exhibited a significant negative correlation (r = -0.83) with N in the control.
Key wordsChlorophyll fluorescence hydroponic culture nutrient uptake photosynthetic pigment silicic acid
Unable to display preview. Download preview PDF.
- Bellaloui N, Hu Y, Mengistu A, Kassem MA, Abel CA. 2013. Effects of foliar boron application on seed composition, cell wall boron, and seed d15N and d13C isotopes in water-stressed soybean plants. Front. Plant Sci. 4: 270Google Scholar
- Cho YS, Jeon WT, Park CY, Park KD, Kang UG. 2006. Study of nutrient uptake and physiological characteristics of rice by 15N and purified Si fertilization level in a transplanted pot experiment. Korean J. Crop Sci. 51: 408–419Google Scholar
- Cole JC, Smith MW, Penn CJ, Cheary BS, Conaghan KJ. 2016. Nitrogen, phosphorus, calcium, and magnesium applied individually or as a slow release or controlled release fertilizer increase growth and yield and affect macronutrient and micronutrient concentration and content of field-grown tomato plants. Sci. Hortic. 211: 420–430CrossRefGoogle Scholar
- Datnoff LE, Rodrigues FA, Seebold KW. 2007. Silicon and plant disease, In: LE Datnoff, WH Elmer, DM Huber, eds, Mineral Nutrition and Plant Disease, APS Press, St Paul, MN, USA. pp: 233–246Google Scholar
- Jang SW, Kim Y, Na CI, Lee IJ. 2018b. Changes in mineral uptake and hormone concentrations in rice plants treated with silicon, nitrogen and calcium independently or in combination. Korean J. Crop Sci. 62: 293–303Google Scholar
- Jawahar S, Vaiyapuri V. 2013. Effect of sulphur and silicon fertilization on yield, nutrient uptake and economics of rice. Int. Res. J. Chem. 1: 34–43Google Scholar
- Kim YH, Khan AL, Waqas M, Lee IJ. 2017. Silicon regulates antioxidant activities of crop plants under abiotic-induced oxidative stress: A review. Front. Plant Sci. 8: 510Google Scholar
- Ma JF, Takahashi E. 2002. Soil, fertilizer, and plant silicon research in Japan. Amsterdam, The Netherlands, Elsevier Science BVGoogle Scholar
- Silva ON, Lobato AKS, Ávila FW, Costa RCL, Oliveira Neto CF, Santos Filho BG, Martins Filho AP, Lemos RP, Pinho JM, Medeiros MBCL, Cardoso MS, Andrade IP. 2012. Silicon-induced increase in chlorophyll is modulated by the leaf water potential in two water-deficient tomato cultivars. Plant Soil Environ. 58: 481–486CrossRefGoogle Scholar