Are Nanosilica, Potassium Silicate and New Soluble Sources of Silicon Effective for Silicon Foliar Application to Soybea
- PDF / 15,514,088 Bytes
- 12 Pages / 595.276 x 790.866 pts Page_size
- 30 Downloads / 172 Views
ORIGINAL PAPER
Are Nanosilica, Potassium Silicate and New Soluble Sources of Silicon Effective for Silicon Foliar Application to Soybean and Rice Plants? Guilherme Felisberto 1 & Renato de Mello Prado 1 & Raimundo Leonardo Lima de Oliveira 1 & Patrícia Aparecida de Carvalho Felisberto 2 Received: 12 March 2020 / Accepted: 24 August 2020 # Springer Nature B.V. 2020
Abstract Foliar application of silicon (Si) is an effective way of supplying this beneficial element to plants. The emergence of new potential liquid sources for foliar application requires studies to assess the effectiveness of supplying Si to plants, as well as its effects on agronomic performance indicators. In this respect, the present study evaluates the effect of four sources (stabilized silicic acid; nanosilica; potassium silicate; and stabilized potassium sodium silicate) and four concentrations (0, 0.5; 1.0; 1.5 g L−1) of Si by foliar application in soybean and rice plants. An experiment was conducted for both species. The plants were grown in a greenhouse in 7 dm3 pots filled with vermiculite and nutrient solution. Four foliar application were performed during growth of the species. In both experiments, the dark green color index, electrolyte leakage, Si content, Si accumulation, shoot dry weight and production components were evaluated. In both species, all sources were effective to foliar application up to 1.2 g L−1 Si. Stabilized potassium sodium silicate increased shoot Si accumulation and grain production, being effective for foliar application in soybean and rice at around 1.0 g L−1 Si. The application of 1.5 g L−1 Si with nanosilica resulted in an improvement in shoot dry weight and grain production for both species. Maybe, its use can be more effective if applied more times during the plant life cycle or in higher concentration but more studies should be performed to determine its potential. Stabilized silicic acid can become an interesting source of silicon but need to be improved. Keywords Silicic acid . Stabilized silicate . Silicon nanoparticles . Electrolyte leakage
1 Introduction Soybean and rice crops are subjected to stresses that compromise cell membrane integrity and induce chlorophyll degradation and lower yields [1]. Silicon (Si), considered beneficial to plants, is capable of attenuating some of the stress that affects them, thereby maintaining their productive potential [2–4]. However, the benefits of Si are related to its accumulation in plant tissues, making it important to know the capacity of the source to increase Si accumulation. Moreover, the * Guilherme Felisberto [email protected] 1
Department of Soils and Fertilizers, College of Agricultural and Veterinary Sciences, São Paulo State University, Via de acesso Prof. Paulo Donato Castellane s/n, Jaboticabal, SP 14884-900, Brazil
2
Department of Crop Protection, College of Agricultural and Veterinary Sciences, São Paulo State University, Via de acesso Prof. Paulo Donato Castellane s/n, Jaboticabal, SP 14884-900, Brazil
response of the plant to accumulation
Data Loading...
