Effect of Different Sources of Silicon on the Growth, Yield and Si Uptake in Aerobic Rice
Mohsina Anjum *
Department of Soil Science and Agricultural Chemistry, CoA, UAS (B), GKVK, India.
N. B. Prakash
Department of Soil Science and Agricultural Chemistry, CoA, UAS (B), GKVK, India.
G. G. Kadalli
Department of Soil Science and Agricultural Chemistry, CoA, UAS (B), GKVK, India.
B. G. Vasanti
AICRP for Dryland Agriculture, UAS (B), GKVK, India.
G. M. Sujith
Department of Agronomy, CoA, UAS (B), GKVK, India.
S. S. Patil
Department of Agril. Statistics, CoA, UAS (B), GKVK. India.
*Author to whom correspondence should be addressed.
Abstract
A field experiment was conducted to study the different sources of silicon (Si) on plant growth and yield. The experiment was laid in randomized complete design (RCBD) with four treatments and four replications. The experiment results revealed that There was an increase in plant height and the number of tillers plant-1 with the application of different sources of Si over RDF (T1). At harvest RHB @ 4 t ha-1 recorded significantly higher plant height (106.05±1.23 cm) and the number of tillers hill-1 (15.25±2.75). Yield attributes like number of panicles hill-1 (13.23±0.49), Panicle length 23.43±0.29 cm), test weight (23.55±0.05 g), straw (7.15±0.59 t ha-1), grain (3.60±0.16 t ha-1) and total biomass yield (10. 75±1.01 t ha-1) was recorded in treatment receiving SA @ 4 mL L-1 (T3). Whereas, higher Si content and uptake in both straw and grain was significantly higher in the recorded in the with the application of the RHB @ 4 t ha-1. Thus, combined application of external Si sources and along with recommended dose of fertilizers found to increase the growth, yield and Si uptake in aerobic rice.
Keywords: Silicon, rice, diatomaceous earth, silicic acid, rice husk biochar