1Department of Soil Science & Agricultural Chemistry, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu-641003, India
2Centre for Plant Breeding and Genetics, Tamil Nadu Agricultural University, Coimbatore-641003, India
*Email: thirusac@gmail.com
Online published on 15 January, 2014.
A field experiment was conducted to study the effect of vermicompost application on growth, nutrients uptake, yield attributes and economics of rice (variety ADT 43) at Agricultural College and Research Institute, Madurai during kharif season. Five main plot treatments viz., M1- control, M2- farmyard manure @ 12.5 t ha−1, M3- vermicompost @ 1.5 t ha−1, M4 - vermicompost @ 2.0 t ha−1 and vermicompost @2.5 t ha−1 and three sub plot treatments viz., S1 – leaf colour chart critical value less than 3, S2 - leaf colour chart critical value less than 4 and S3- Recommended dose of nitrogen were replicated thrice in a split plot design. The results revealed that growth and growth attributes, yield attributes, N, P and K uptake and benefit:cost ratio were recorded higher under application of vermicompost at the rate of 2.5 t ha−1 along with nitrogen addition based on leaf colour chart critical value less than 4. Application of vermicompost @ 2.5 t ha−1 along with nitrogen addition based on leaf colour chart critical value less than 4 was registered highest benefit cost ratio of 2.14 when compared to control was 1.83.
Overall findings on growth attributes, yield attributes, nutrients uptake and B:C ratio were recorded highest under application of vermicompost with nitrogen through LCC <4
Organic manure, growth parameter, yield attributes, NPK uptake, BC ratio
