ISSN 2375-0693
African Journal of Agricultural Economics and Rural Development ISSN 2375-0693 Vol. 7 (8), pp. 001-011, August, 2019. © International Scholars Journals
Full Length Research Paper
A study of the correlations between Si analyzed extract and Si management agenda of rice cultivars
*Amartya Dhoni, Salman E. Ray and Rajiv Dhyan Rushdie
Department of Agricultural Chemistry and Soil Science, B. A. College of Agriculture, AAU, Anand, Gujarat, India.
Accepted 13 April, 2019
Abstract
A pot experiment was conducted in 2012 in the greenhouse of the Anand Agricultural University Anand Gujarat, India. Treatments were arranged in a factorial completely randomized complete design with silicon factor at four levels (0, 100, 200 and 300 ppm) with three replicates. Indian improved and high - yielding variety Gurajari was used. The Si application up to 200 mg kg-1 soil significantly increased grain and straw yields of rice over the control under low (< 25 mg Si kg-1 soil) and medium (25 - 50 mg Si kg-1 soil) category soils, while it was up to 100 mg Si kg -1 soil in high category soils. The soil, grain and straw samples were analyzed for their Si, P, K, S and Na content at harvest. The Si content in grain ranged from 1.77 to 2.69% in untreated plots, whereas in treating plots, it ranged from 1.85 to 3.40%. The average value of Si content in straw was 7.78, 7.46 and 7.82% in low, medium and high category soils, respectively.
Key words: Silicon, yield, mineral composition, content, rice.