Abstract
Questionnaire survey about shading and fruit quality for farmers growing sweet pepper in summer-fall protected cultivation were conducted. Most farmers expanded shading screen from late May to early October. After that, the rate of expanding farmer decreased gradually, and the farmer who answered that sunscald has occurred increased. The greenhouse that was expanded the shading screen until early October (Removal-greenhouse) and greenhouse that was expanded one continuous until late December (Continuous-greenhouse) were compared. Inside temperature of Removal-greenhouse was higher than Continuous -greenhouse only 0.8 °C, and there was no difference in ripening between them. The other hand, russetting fruits from Continuous -house decreased compared to Removalgreenhouse. The greenhouse that expanded shading screen which shading rate was 30 % (30 %-greenhouse) and the greenhouse that expanded one which shading rate was 50 % (50 %-greenhouse) were compared. The number of fruit setting on 30 %-greenhouse was higher than 50 %-greenhouse. The product fruit yield on 30 %-greenhouse was higher than 50 %-greenhouse too. These results reveal that the shading screen which shading rate is 30 % should be expand from after the rainy season to the end of cultivation in summer-fall protected cultivation of sweet pepper.
