Estimation of cotton productivity depending on early growth stage using image space in pilot area (Al-Kaltta village)

This research aimed to use space image at certain growth stage for predicting cotton yield in its direct physio-spectral relationship with productivity. Timely, at the beginning of August better spectral growth stage is coincidence with a maximum leaf area index of cotton plants at Al-Kaltta fields. Normalized difference vegetation index (NDVI) showed superiority on each of red and near infrared channels in relation with productivity. Exponential model was used to predict cotton productivity depending on NDVI values during stage that maximum LAI.