A MODEL FOR PREDICTION OF YIELD AND QUALITY OF CUCUMBER FRUITS
The model was validated by comparing simulation results with production data of 10 commercial growers in 1996 and 14 growers in 1997 (January - May). Even when only the date of planting of the crop and date scheduled for the last harvest were used as input to the model, the weekly harvest of total fresh weight averaged over all growers was simulated well by the model. The average error of the weekly prediction of the fresh weight yield was 14.9%, while the error of the annual yield was 2.8% in 1996. The predicted average fruit size and percentage of second class fruits corresponded reasonably well with growers' data, showing average weekly errors of 6.5% and 5.3%, respectively.