Unformity Coefficient of Raingun Sprinkler Irrigation

摘要

The main objective of supplemental irrigation is to apply limited amount of water to the crop that crop needs for development and which cannot be provided by rains. When raingun sprinkler irrigation system was used to apply fertilizer and pesticides,uniformity of application is becomes even more critical. Therefore, the main objective of this study was evaluating the uniformity coefficient of raingun sprinkler. The uniformity of water application under raingun sprinkler is determined by setting outcatch cans in grid pattern with diameter and height of 11.5 cm and 13.5 with a volume of two liter capacity at 2 m spacing between each can. Results from field evaluation using Christian's coefficient of uniformity was within the acceptable range of 60-90%.