Loading...

CHLOROPHYLL METER AS A TOOL TO DETERMINE THE TIME OF APPLICATION OF N IN RICE (ORnA SATWA L.) - A REVIEW

Article Id: ARCC4266 | Page : 309 - 312
Citation :- CHLOROPHYLL METER AS A TOOL TO DETERMINE THE TIME OF APPLICATION OF N IN RICE (ORnA SATWA L.) - A REVIEW.Agricultural Reviews.2004.(25):309 - 312
K.R. Pushpanathan, M. Vijaya Kumar and K. Siddeswaran
Address : Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore - 641 003, India

Abstract

Chlorophyll meter is a promising tool for adjusting the rate and time of nitrogen application for different rice fields. Chlorophyll meter measures the leaf chlorophyll content, which is closely related to the leaf N content as well as photosynthetic rate. The SPAD (Soil Plant Analysis Division) technique ensures supply of N to the crop as and when there is demand for N and has been reported to result in higher N use efficiency. Fixing the critical SPAD value for N top dressing in the rice has been discussed.

References

  1. AJagesan, A. (1997). M.Sc.(Ag) Thesis. Tamil Nadu Agric. Univ., Coimbatore.
  2. Balasubramanian, V. et a/. (1999). Nutr. Cyc/. Agroeeosyst., 53: 93-101.
  3. BaIasubramanian, V. et a/. (2000). IRRN., 25: 4-8.
  4. Benedict, H.M. and Swicl1er, R. (1961). Science., 133: 2015-2016.
  5. Evans, J.R. (1989). Oecologia., 78: 9-19.
  6. Held, C. and Mooney, HA (1986).In:The Economy of Plant Form and Function. CambrIdge University Press. pp. 25-35.
  7. Inada, K (1963). Crop. Sci. Soc. (Jpn)., 32: 157-182.
  8. IRRI. (1997). CREMNET. Progress Report for 1996, Manila 1099, Philippines.
  9. Janaki, P. and Thiyagarajan, T.M. (2000). lRRN., 25: 24-27.
  10. Kumar, V. et a/. (1999). J. Afrie. Sci., 132: 149-154.
  11. Minolta, (1989). SPAD 502 owner's manual industrial meter division. Minolta Corp. Ramsey, N.J., Japan.
  12. Muralidharan, K(1996). M.Sc. (Ag) Thesis, Tamil Nadu Agric. Univ., Coimbatore.
  13. Peng, S. (1998). lNM net Bulletin. 6:15.
  14. Peng, S. et a/. (1993). Agron. J., 85: 987-990.
  15. Peng, S. et a/. (1995). Commun. Soil Sci. PI. Anal., 26: 927-935.
  16. Peng, S. et aI. (1996). Field Crop Res., 47: 243-252.
  17. Peng, S. et a/. (1999). J. PI. Prod. Sci., 2: 227-231.
  18. Peng, S., and Cassman, KG. (1995). Program Report of IRRJ., 1994.
  19. Peterson, TA et a/. (1993). Nebguide G 93 - 1171 A. Co operative Extension Service, University of Nebraska, Uncoln.
  20. Takebe, M. and Yoneyama, T. (1989). JARQ, 28: 86-93.
  21. Takebe, M. et a/. (1990). PI. Soil., 122: 295-297.
  22. Thiyagarajan, T.M. and Aruna Geetha, S. (2000). IRRN., 25: 23-24.
  23. Turner, ET. and Jund, M.E (1989). IRRN., 14: 30-31.
  24. Turner, FT. and Jund, M.E (1994). Aust. J. Exp. Agrie., 34: 1001-1005.
  25. Turner, ET. and. Jund, M.E (1991). Agron. J~, 83 : 926-928.
  26. Watanabe, S. et aI. (1980). Jpn. J. Crop Sci., 49 (Special issue): 89·90.

Global Footprints