Abstract The conventional air temperatures based Growing Degree Days (GDD) is an agrometeorological crop growth monitoring parameter. Using 1987–1988 data sets, the temporal profiles of NDVI/RVI (natural integration of non-linear crop agrometeorological growth processes) and GDD were regressed for two districts which had 91.63 to 93.91% of agricultural area under wheat. The maximum and mean air temperature based GDD were related with NDVI/RVI over the entire wheat growth cycle at 99% and 90–99% significance level, respectively. The minimum air temperature GDD, relevant only till milking stage, also had 95–99% significance level relationship with NDVI/RVI temporal profiles till milking stage. Regression upto late flowering stage gave better correlations for maximum/minimum/mean temperature GDD and NDVI/RVI. For regression over the entire crop growth cycle the NDVI was better correlated with GDD than RVI.


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    Title :

    NOAA/AVHRR vegetation indices as district level wheat growth indicators


    Contributors:
    Rao, G.H. (author) / Gupta, R.K. (author) / Nadham, T.S.V. (author) / Prasad, S. (author)

    Published in:

    Advances in Space Research ; 13 , 5 ; 249-252


    Publication date :

    1993-01-01


    Size :

    4 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English