Influence of planting methods and different vermicomposts on the growth attributes, yield and nutrient uptake in rice

Author: 
Balamurugan, R and Sudhakar, P

Field experiments were conducted at Annamalai University, Experimental Farm, Annamalainagar, Chidambaram during two seasons namely Navarai of 2009-2010 and late samba of 2010- 2011 to identify the influence of different cultivation systems and various vermicomposts on productivity of rice. The experiment was laid out in a split plot design. The crop planting methods was assigned to main plot and different vermicomposts to sub plot. Three planting methods viz., M1 (puddle direct sowing), M2 (conventional transplanting), and M3 (System of Rice Intensification) in main plot and different vermicompost viz., S1 (Sewage sludge based vermicompost), S2 (FYM based vermicompost), S3 (Sugarcane trash based vermicompost), S4 (Pressmud based vermicompost) and S5 (No vermicompost-control) under sub plot were evaluated. The treatments were replicated thrice. Observations were taken for plant height, DMP, grain & straw yields and nutrient uptake in rice. The results of the study revealed that the SRI method of establishment enhanced the growth parameters, dry matter production, grain and straw yield and nutrient uptake in rice. Among vermicomposts, pressmud based vermicompost recorded better growth attributes and yield compared to other source of vermicompost. This treatment also recorded the highest nutrient uptake followed by conventional method of planting. Based on the above experimental results, it could be concluded that cultivation of rice with SRI method along with application of pressmud based vermicompost @ 3.0 t ha-1 will be a promising combination which resulted in higher yields and economic returns.