Vol. 12, Issue 8 (2023)

Author(s):
Surya Mithra Nair J, S Elamathi and P Anandhi

Abstract:
The experiment was conducted in Tamil Nadu Rice Research Institute, Aduthurai during summer season of 2023. Experiment field was laid out in Randomized Block Design with three replications and ten treatments. Machine transplanted with 12, 15, 18 and 21 days old manually transplanted seedlings where standardized and. Nursery was prepared for machine transplanting. Higher yield and yield attributes were recorded in T₄- Machine transplanted with fifteen days old seedling + 100% RDF and microbial consortia. Seed treated with microbial consortia attained good seedlings and abled to pick up by machine. Higher grain yield of 5747 kg ha^-1 and straw yield of 7793 kg ha^-1 was recorded. Yield attributes, viz., 383 number of panicles m^-2, Panicle weight (g), panicle length (cm), Number of grains panicle (13.3 g, 27.3 cm, 277). Maximum uptake of nitrogen, phosphorus and potassium was recorded by treatment T₄- 15 days old mechanically transplanted seedling with 100% RDF + Microbial Consortia at harvest stage of crop. The result revealed that mechanized transplanting with 15 days old seedling with 100% RDF + Microbial consortia recorded higher plant height 114.7 (cm), number of panicles (383/m2 ), No. of grains/panicle (255/panicle) and grain yield (5747 kg/ha) whereas 21 days old seedlings with no fertilizer showed decrease in grain yield (3056 kg/ha).