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Field experiments were conducted at Annamalai Unversity, Experimental Farm, Annamalai Nagar,
Chidambaram during the seasons viz., Kuruvai and Samba, 2013 to study the organic nutrient
management in rice by using various organic sources (Organic manure, Panchagavya and
Dasagavya).The experiment was laid out in a split plot design. For this organic source of nutrients
assigned to main plot and foliar sprays to sub plot. Organic sources of nutrients viz., M1 (Farm yard
manure + RDF + BF, M2 (Pressmud @12.5 t ha-1 + RDF + BF) and M3 (control ,inorganic alone) in
main plot and foliar application viz., S1 (No spray), S2 (3% Panchagavya, two times at tillering panicle
initiation), S3 (3% Panchagavya, three times at tillering panicle initiation, flowering), S4 (3%
Dasagavya, two times at tillering panicle initiation),) and S5 (3% Dasagavya three times at tillering
panicle initiation and flowering ) under sub plot were evaluated. The treatments were replicated thrice.
ADT 36 and Co43 were used as test varieties for appropriate seasons.The results of the study revealed
that the application of pressmud @ 12.5 t ha-1 + RDF + BF enhanced the growth parameters viz., plant
height, number of tillers m-2, leaf area index, dry matter production, and yield attributes like productive
tillers m-2 , panicle length, filled grains panicle-1 thousand grain weight, and yield. Among foliar
spraying 3 % dasagavya for 3 times spraying recorded the highest growth and yield attributing
characters compared to 3% Panchagavya for 3 times spraying and 3% dasagavya for 2 sprayings.Crop
raised with pressmud @ 12.5 t ha-1 +RDF + BF registered the highest grain and straw yields among the
organic sources. Application of organic sources and foliar spray had significant influence on the N, P
and K uptake by the crop at harvest stages. Pressmud @ 12.5 t ha-1 +RDF +BF recorded the higher
nutrient uptake followed by Farm yard manure @ 12.5 t ha-1 +RDF +BF. Among the foliar applications,
3 % dasagavya, three times at times at tillering panicle initiation, flowering registered the higher nutrient
uptake at harvest stages. The same trend was followed in samba, 2013 also..Based on the above
experimental results, it could be conculuded that cultivation of rice with pressmud @ 12.5 t ha-1 +RDF
+BF along with foliar application of dasagavya, 3 sprayings was found to be a promising combination
which resulted in higher yields and economic returns. Hence it can be concluded that this combination
can be recommended to the rice growing farmers in the coastal areas of Tamil Nadu.
Keywords: Oryza sativa, FYM, Organic sources,Crop.