Ecology, Environment and Conservation Paper

Vol 21, Issue 1, 2015; Page No.(467-470)

EFFECT OF DIFFERENT SOURCES OF SILICON ON GROWTH, YIELD AND NUTRIENT UPTAKE OF WETLAND RICE

N.D. Yogendra, N.B. Prakash1, C.V. Manuja, M.T. Malagi, M.B. Mahendra Kumar and B.H. Kumara

Abstract

Field experiment was conducted in eastern dry zone soils of Karnataka to study the effect of different sources of silicon application on growth, yield and nutrient uptake of wetland rice. Experiments were laid out in randomized block design comprising of nine treatments. The results revealed that significant increase in the growth and yield parameters with application of different sources of silicon along with 100 kg N ha-1. The significant increase in uptake of nutrients were noticed with the application of soluble silicic acid @ 4 ml L-1 followed by calcium silicate @ 2 t ha-1 and silica gel @ 500 kg ha-1. The real time N management with LCC-4 along with soluble spray of silicic acid @ 4 ml L-1 recorded on par grain and straw (6074 and 7150 kg ha-1) yield. Further application of N based on LCC economized the fertilizer N to an extent of 25 kg as compared to RDF alone (100 kg N ha-1) in wetland rice.

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