## 6 Experimentation
### Result and Analysis  
The results of the experiment over the four mentioned periods are shown in the four data tables below. Each table includes 16 columns and several rows. The first row of the table contains the labels of the type of data in the column. Each one from the second row contains the data corresponding to a day of the period. Details of the first row: The first 13 cells are filled in gray to indicate that the data in the columns corresponding to these cells are input data; the 14 th and 15 th cells are in red to indicate that the data in the columns corresponding to these cells are inferred results. The last cell is in green to indicate that the data in the 16 th column are the decisions of humans in reality. The meaning of each column is as follows. * The first three columns show the information of the day, month, and year of the date. * The fourth column shows the total rain quantity of a day. Its unit is mm. When the rain quantity is greater than 0, the cell is filled with blue. * The fifth column shows the number of delay days. These data in this cell are calculated from the data in the fourth column. Its unit is the day. When the number of delay days is greater than 0, the cell is filled with blue. * The next six cells correspond to six soil tensiometers. These indicate the average soil moisture of a day as measured by a soil tensiometer. Its unit is cbar. * The 12 th cell shows the average root zone moisture of a day. The data in this cell are calculated based on the data in the six previous cells. Its unit is also cbar. * The 13 th cell shows the crop state observed by a human. If farmers recognize a new crop state and put it in the dataset, then this state is written by the name code, and the cell is filled with yellow. Otherwise, the text entered in the cell is \"null\". * The 14 th cell shows the value SleepingDuration inferred by the DSS. Its unit is the day. * The 15 th cell shows the state of the CropWaterNeed. When CropWaterNeed reaches state Yes, the text in the cell is in uppercase, and the cell is filled with red. * The 16 th cell shows the decision of farmers recorded in the dataset. The day that farmers decide to water the plot, the corresponding cell is made green, and the text inside the cell is \"YES\". Otherwise, there is no text. Figure 19 shows the results of the experimental period from 22/07/2013 to 31/07/2013. The first irrigation is performed on 22/07/2013. The farmer decides to schedule the second irrigation on 31/07/2013; however, the DSS suggests that the farmer does nothing on the same day. The farmer disobeys the IRRINOV\({}^{\tiny\textregistered}\) method in this case, and he/she has a good reason. When the value of the average root zone moisture is 152 cbar, the root zone moisture level is low. If the root zone moisture level is low and the crop growth is R1, then the crop needs water. If following the IRRINOV\({}^{\tiny\textregistered}\) methods, the farmer should wait at least two more days because a rain event postpones the irrigation by four days. The data of SleepingDuration also reflect this calculation. The result of this experiment proves that the farmer decision may be different from the IRRINOV\({}^{\tiny\textregistered}\) method. Figure 20 shows the results of the experimental period from 31/07/2013 to 14/08/2013. The first irrigation is performed on 14/08/2013. The second irrigation is scheduled by both the farmer and the DSS is on 21/08/2013. This example shows that the farmer follows the IRRINOV(r) method and the DSS gives a correct result based on this method. The DSS result is correct in this case because of the light rain on 19/08/2013. There are no delay days in this period. Figure 22 shows the results of the experimental period from 21/08/2013 to 03/09/2013. The first irrigation is performed on 21/08/2013. The farmer decides to schedule the second irrigation on 21/08/2013. However, the second irrigation is scheduled by the DSS is two days sooner.