RHIZOSPHERE ENZYME ACTIVITIES AS INFLUENCED BY AGE OF SEEDLINGS, WEED MANAGEMENT PRACTICES AND HUMIC ACID APPLICATION UNDER SYSTEM OF RICE INTENSIFICATION

Article Id: ARCC1171 | Page : 151- 155
Citation :- RHIZOSPHERE ENZYME ACTIVITIES AS INFLUENCED BY AGE OF SEEDLINGS, WEED MANAGEMENT PRACTICES AND HUMIC ACID APPLICATION UNDER SYSTEM OF RICE INTENSIFICATION.Indian Journal Of Agricultural Research.2011.(45):151- 155
M.P. Kavitha, V. Ganesaraja, V.K. Paulpandi and R. Bala Subramanian
Address : Department of Agronomy, Agricultural College and Research Institute, Madurai – 625 104, India.

Abstract

Field experiments were conducted during two consecutive kharif seasons of the years 2006 and 2007, to study the rhizosphere enzyme activities under System of Rice Intensification. The results revealed that increased enzyme activities were noticed by transplanting 14 days old seedlings with pre emergence application of pretilachlor at the rate of 0.75 kg a.i. ha-1 + one mechanical weeding at 30 DAT and combined application of humic acid as seedling dip (0.3 per cent humic acid) + foliar spray (0.1 per cent humic acid) twice at 30 and 45 DAT.

Keywords

Seedling age Weed management Humic acid Enzyme activities.

References

  1. Anuratha, A. (1994) M.Sc.(Ag.) Thesis Tamil Nadu Agricultural University, Coimbatore, India.
  2. Bloem, C., D.E. et.al., (1992) . Soil biol. Biochem., 24: 655-664.
  3. Casida, L.E., et.al., (1965) . Soil.Sci., 98: 371-376.
  4. Deepa, M. (2001). M.Sc(Ag.) Thesis Tamil Nadu Agricultural University, Coimbatore, India.
  5. FAO. (2006). Online databases. In: http://taostat.fao.org/collections.
  6. Grossbard. (1985). Effects of glyphosate on the microflora with reference to the decomposition of treated vegetation and interaction with some plant pathogens. (Audus J.J.(ed) Academic Press, London.p.181. Inst., P.O Box. 933, Manila 1099, Philipines.
  7. IRRI. (1996). Use of Leaf Colour Chart (LCC) for N Management in Rice. Int. Rice Res. Inst., P.O Box. 933, Manila 1099, Philippines.
  8. Johnson, J.L. and Temple. K.L. (1964). Soil Sci. Soc. Am. Proc., 28: 207-209
  9. Kelley, W.D. and Rodriguez. R. (1975). Can. J. Microbiol., 21: 565-570
  10. Kumar, D. and Shivay. V.S. (2004). Indian Farming, 54 (8): 18-21.
  11. Tate, RL. (1995). In: “Soil Microbilogy”. John Wiley and Sons, Inc., New York. Pp.239.

Global Footprints