Program Studi Agroekoteknologi Fakultas Pertanian Universitas Udayana

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Journal : Agrotrop : Journal on Agriculture Science

Kesesuaian Kualitas Air Irigasi untuk Padi Sawah di Daerah Irigasi Mambal I GUSTI NGURAH SANTOSA; I PUTU DHARMA
Agrotrop : Journal on Agriculture Science Vol 9 No 1 (2019)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (297.349 KB) | DOI: 10.24843/AJoAS.2019.v09.i01.p09


Suitability of Irrigation Water Quality for Rice in Mambal Irrigation Area. Mambal irrigation area is located in southern region of Bali, close by urban area. It consists of 42 Subak which covered 4.820 ha. However, the total area that still exists today is only 2.978 ha, and it is considered potential in increasing rice production and supplying rice in order to support food self-sufficiency in Bali. The increase of population is considered as the factor of wetland conversion because, the growth of population leads to variety of purposes such as shelter (housing), tourism/hotel, accommodation, business/home industry, livestock, public facilities, etc. Therefore, the activities done on the wetland conversion area automatically changed. That activity on conversion area consequences in both liquid or solid waste, and it is often discharged into rivers or irrigation channels. Consequently, it may cause irrigation water pollution. Poor quality of irrigation water can endangering rice plant growth and reduce the production, which means blocking or inhibiting food self-sufficiency. This study is considered as field and laboratory research. There are some field activities done, namely observation of the pollution sources and types of pollutants, as well as waste disposal mechanisms and technologies used to tackle pollution. In order to determine the quality of irrigation water, the water samples taken in the primary channel (1 water sample), secondary channel (1 water sample), tertiary channel (1 water sample), and field area (3 samples of water). All water samples are analyzed at the Analytical Laboratory of Udayana University. The results of the study are the sources of pollution come from channel natural environments, public facilities, housing and household waste. It was found that there are some types of waste, namely natural garbage, artificial garbage, liquid or solid waste in small amount. The mechanism of waste disposal is done conventionally and there is no application of technology of waste disposal. The outcome of the study is irrigation water quality for rice is still suitable for irrigation.
Agrotrop : Journal on Agriculture Science Vol 1 No 1 (2011)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar


Increasing of rice production is one of a highlight program in South Korea. In order to support this, enough water supply for paddy field is one of determined main factors to maintain good plant growth and high yield. Water from the rainfall is usually not enough for paddy field, so it must be supplied from irrigation system. The water source for irrigation can be derived from surface water and or ground water which is usually located in long distance, consequently it needs irrigation facilities to deliver water until reach paddy field area. Therefore government, and, or farmer need to manage irrigation to fulfill paddy field water requirement and they have been doing it. By working hard and holding strong commitment, South Korea has been reaching rice self sufficiency average 98,9% since 1970s for 38 years period. Average rice yield was 5.20 ton per ha in 2008 and this indicates as the highest level of rice yield in the world as well. Based on this reality, it needs to be studied the role of irrigation management in increasing rice production in South Korea. It was found that irrigation management in South Korea has very important role and it has significant effect in increasing rice production. This reality was supported by increasing of safety paddy field area by year. The water potential developed and to be developed is higher than water use. Government provided K Water (Korea Water Resources Cooperation) to handle everything in relation to water problem.