## 3 Results and Discussion  
### Environmental Conditions and Fruit Zone Microclimate  
The average values of air temperature, rainfall summation, sunshine duration, and medial humidity were calculated from 1 April to 15 October (Table 1). The three seasons were similar, but the distribution of these parameters was quite different during the growing period. The average temperature in 2017 was 12.8 \({}^{\circ}\)C, which was 1.5 \({}^{\circ}\)C lower than the other two years during pre-blooming, and rainfall was reduced every year during this period. During berry set (middle May), the average temperature was similar in three seasons, with 2019 being slightly warmer (20.4 \({}^{\circ}\)C) than the other two years. However, May of 2017 was characterized by considerable rainfall, and the air temperature in June and July of 2017 was lower than the other two years. During veraison (late July), the average temperature in 2019 was 1.5 \({}^{\circ}\)C higher (26.9 \({}^{\circ}\)C) than the other two years, and the rainfall in 2017 was highest amongst the three years. With regard to the temperature of fruit zone shown in Table 2, hours of temperature above 35 \({}^{\circ}\)C were longer during leaf removal in all three years. In addition, the average daily maximum temperature, daily mean temperature, and average daily temperature difference were higher during leaf removal, except for 2018. The average daily minimum temperature in CN and leaf removal was the same. Light intensity was high during leaf removal in three years (Table 3). Analyzing different qualities, the percentage of ultraviolet, purple, blue, and cyan light of the fruit zone was high during leaf removal. In LR-V, the percentage of green, yellow, orange, and red light was also high. \begin{table}
\begin{tabular}{c c c c c c c c c c c} \hline \hline \multirow{2}{*}{**Year**} & \multirow{2}{*}{**Month**} & \multicolumn{2}{c}{**16 June-15 July**} & \multicolumn{2}{c}{**16 July-15 August**} & \multicolumn{2}{c}{**16 August-15 September**} & \multicolumn{2}{c}{**16 September-15 October**} \\ \cline{3-11}  & & **CN** & **Leaf Removal** & **CN** & **Leaf Removal** & **CN** & **Leaf Removal** & **CN** & **Leaf Removal** & **CN** & **Leaf Removal** \\ \hline \multirow{11}{*}{2017} & Avg. & 335\({}^{\circ}\)C (J) & 21 & 38 & 12 & 25 & 0 & 4 & 0 & 1 \\  & Avg. Data (C) & 33.84 & 36.65 & 32.57 & 34.31 & 29.92 & 32.48 & 25.81 & 29.71 \\  & Avg. Data (C) & 20.12 & 19.46 & 20.00 & 20.15 & 17.44 & 17.30 & 12.27 & 12.41 \\  & Avg. Data (C) & 26.46 & 27.02 & 24.98 & 25.60 & 22.77 & 23.19 & 18.57 & 19.32 \\  & Avg. Data (C) & 13.72 & 17.19 & 12.58 & 14.16 & 12.48 & 15.18 & 13.54 & 17.29 \\ \hline \multirow{11}{*}{2018} & Avg. & 35\({}^{\circ}\)C (J) & 25 & 52 & 33 & 35 & 1 & 3 & 0 & 0 \\  & Avg. Data (C) & 23.42 & 35.14 & 33.99 & 33.84 & 30.58 & 29.03 & 25.26 & 29.92 \\  & Avg. Data (C) & 20.13 & 19.45 & 23.39 & 22.88 & 18.59 & 18.06 & 12.91 & 12.38 \\  & Avg. Data (C) & 25.52 & 25.75 & 27.55 & 27.36 & 23.55 & 23.13 & 18.26 & 17.81 \\  & Avg. Data (C) & 12.29 & 15.68 & 10.60 & 10.36 & 11.99 & 10.97 & 12.35 & 11.54 \\ \hline \multirow{11}{*}{2019} & Avg. & 35\({}^{\circ}\)C (J) & 38 & 97 & 0 & 45 & 0 & 32 & 0 & 17 \\  & Avg. Data (C) & 22.29 & 37.82 & 29.51 & 35.46 & 27.84 & 35.11 & 24.48 & 29.41 \\ \cline{1-1}  & Avg. Data (C) & 21.05 & 21.42 & 21.65 & 22.69 & 17.41 & 18.20 & 11.70 & 12.23 \\ \cline{1-1}  & Avg. Data (C) & 26.08 & 27.29 & 24.86 & 26.87 & 22.04 & 24.38 & 17.40 & 18.77 \\ \cline{1-1}  & Avg. Data (C) & 11.24 & 16.40 & 7.86 & 12.77 & 10.43 & 16.41 & 12.79 & 17.18 \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Temperature of fruit zone.