Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2008.510.515BazgeerS.MaheyR.K.SidhuS.S.SharmaP.K.SoodA.NoorianA.M.KamaliGh.3200883Estimation of crop production in advance of the harvest
has been an intensively researched field in agriculture. The aim of present
study was to predict wheat yield using different agrometeorological indices,
spectral index (NDVI, Normalized Difference Vegetation Index) and Trend
Estimated Yield (TEY) in Hoshiarpur district of Punjab for the years 2001-02
and 2002-03. On the basis of examination of Correlation Coefficients (R),
Standard Error of Estimate (SEOE) and Relative Deviation (RD) values resulted
from different agromet models, the best agromet subset were selected as
Minimum Temperature (T_{min}), Maximum Temperature (T_{max})
and Accumulated Heliothermal Units (HTU) for Hoshiarpur district. In order
to improve model accuracy the above mentioned agrometeorological indices
together with NDVI and TEY were used as independent variables for yield
prediction at reproductive stage (2nd week of March) of wheat. It was
found that Agromet-Spectral-Trend-Yield model could explain 96% (SEOE
= 87 kg ha^{-1}) of wheat yield variations for Hoshiarpur district.]]>Angus, J.F., D.H. Mackenzie, R. Morton and C.A. Schafer,1981Asana, R.D. and R.F. Williams,1965Baier, W. and G.W. Robertson,1967Bairagi, G.D. and Z.U. Hassan,2002Clarke, D., M. Smith and K. EL-Askari,1998Dadhwal, V.K. and S.S. Ray,1998Deosthali, V. and A. Akmanchi,2006Doorenbos, J. and W.O. Pruitt,1975Draper, N.R. and H. Smith,2003Dubey, R.P., M.H. Kalubarme, O.P. Jhorar and S.S. Cheema,1987Dubey, R.P., N. Ajwani, M.H. Kalubarme, V.N. Sridhar and R.R. Navalgund et al.,1994Hundal, S.S., R. Singh and L.K. Dhaliwal,1997Triticum aestivum) in Punjab.]]>Jand, S.,1999Kalubarme, M.H., R.K. Mahey, S.S. Dhaliwal, S.S. Sidhu and K. Singh et al.,1995Kramer, P.J.,1969Mahey, R.K.,1999Marcellos, H. and W.V. Single,1972Medhavy, T.T., T. Sharma, R.P. Dubey, R.K. Mahey and A.K. Sharma,1995Michael, A.M.,1978Nuttonson, M.Y.,1955Peters, D.B., J.W. Pendelton, R.H. Hageman and C.M. Brown,1971Pinter, Jr. J. Paul, J.L. Hatfield, J.S. Schepers and E.M. Barnes et al.,2003Rao, G.S.L.H.V.P.,2003Reddy, T.Y. and G.H.S. Reddi,2003Sharma, A., R.K. Sood and M.H. Kalubarme,2004Verma, U., D.S. Ruhal, M. Yadav, A.P. Khera and R.S. Hooda et al.,2003