Vol. 7, Issue 6 (2019)
Effect of calcium silicate and fly ash on dynamics of silicon fractions in Alfisol
Author(s): C Sivaranjani, L Chithra and M Baskar
Abstract: Silicon (Si) is the second most abundant element in the earth’s crust and plays a number of important roles in the mineral nutrition of plants. The scientific documentation on the dynamics of Si fractions will help to establish the importance of Si fertilization. An incubation experiment was conducted to study the plant available silicon and its fraction from its native soil and applied sources viz, Calcium Silicate (CS) and Fly Ash (FA) along with the Nitrogen. The experiment was conducted in completely randomized design (CRD) having fourteen treatment combinations replicated thrice. Soil samples were collected and analyzed for Si fractions viz., mobile Si, adsorbed Si and Plant available silicon(PAS) at 30 days interval (30, 60, 90 and 120 day). The results revealed that the PAS content in the soil without Si addition (absolute control) was low. Application of different levels of Si either through CS or FA significantly increased the mobile Si, adsorbed Si and PAS content of soil at all the stages of incubation periods when compared to control. The available Si increased to the tune of 2.9, 5.0 and 7.7 mg kg -1 due to application of CS @ 200,400 and 600 kg ha-1 respectively at 30 days after incubation. Similarly application of fly ash @ 10, 20 and 30 t ha-1 significantly increased the available Si content to the tune of 1.5, 4.6 and 6.8 mg kg -1 respectively over control at 30 days after incubation. It was also observed that application of N @ 75 kg ha-1 along with CS and FA further enhanced the mobile Si, adsorbed Si and PAS. The mobile Si and PAS content to soil slightly decreased after 60 DAI in CS applied treatments. However steady increase of mobile Si, adsorbed Si and PAS was noticed in FA applied treatment with the advancement of incubation period. The results revealed that FA can be effectively used as Si source to improve the various fractions of Si in soil.
Pages: 42-45 | 643 Views 61 Downloads
How to cite this article:
C Sivaranjani, L Chithra, M Baskar. Effect of calcium silicate and fly ash on dynamics of silicon fractions in Alfisol. Int J Chem Stud 2019;7(6):42-45.