The CERES-rice model (version 4.0) was calibrated and validated using the data from a field experiment carried out during the rainy season of 2004 and 2005 at Shalimar, Srinagar (35° 5′ N latitude and 74° 89′ E longitude, 1587 m above the mean sea level, India. The experiment included six rice cultivars each transplanted on 25 May, 10 June and 25 June. Data of 25 May transplanting was used for model calibration and development of the genetic coefficients of the rice cultivars. The predicted and observed dates of phenological events were in close agreement with root mean square error (RMSE), mean absolute error (MAE) and D-index of 5.0 days, 4.3 days and 0.91, respectively, for anthesis and 3.7 days, 3.1 days and 0.91, respectively, for physiological maturity of the crop. The predicted and observed grain yields were also very close with a RMSE of 0.63 Mg ha
, MAE of 0.58 Mg ha
and D-index of 0.89, respectively. Corresponding values for above ground biomass was 1.17 Mg ha
, 1.01 Mg ha
and 0.82. Sensitivity test showed that simulated yield responded to temperature and atmospheric CO
concentration. Nitrogen 240 kg ha
at 25 May transplanting, recorded highest simulated grain yield (9.71 Mg ha
). Further, 3 seedlings hill
produced highest simulated grain yield. The results suggest that the model can be applied in the temperate Kashmir to estimate crop productivity and optimize the management practices.
Authors:S. M. Nurulain, H. Kalász, P. Szegi, K. Kuca, A. Adem, M. Y. B. Hasan, F. Hashemi, and K. Tekes
HPLC monitoring of pharmacokinetics was done in two body compartments of rats following intramuscular treatments with three different doses of K027, a bispyridinium mono-aldoxime type of antidotes to organoposphate intoxicated subjects. Reversed-phase HPLC separation with electrochemical detections was done to monitor the onset, the maximum level, and offset in K027 concentration. Serum level of K027 showed a fast onset, independently from the doses of K027. Drug level in brain was showing an essentially delayed kinetics.