Irrigation network is channel, building, and its complementary building which is as a unity needed for provision, division, administration, usage, and disposal of irrigation water. The Public Works Water Resources Department which maintains the irrigation in Merauke Regency until recently has not have a Map of the Area for Irrigation by online which can be accessed by stakeholders of Local Government of Merauke Regency. The potential of Merauke Regency for agriculture is quite high [1], therefore to maintain the potential, it is needed a water resources maintenance, which functions as evaluation, monitoring, and operational, and maintenance of the irrigation network.
The area of agricultural land in Merauke Regency
according to data from Bappeda (Agency for Regional
Development) of Merauke Regency is for about 4.6 million
hectares in 2015 and within the next 5 years will be cultivated as
much as 1.2 hectares, especially for rice field and secondary crops
plants [1].This study has purpose to estimate the value of rice
production by using dry-milled rice with a land suitability
approach using decision tree analysis and remote sensing
methods in Merauke Regency. Remote sensing that has been
corrected geometrically and radio-metrically is analyzed by using
decision tree analysis to derive information on paddy/rice and
non-rice field land use and which is reclassified by using field unit
information based on field observations which will result in
accuracy of use and producer. The rice field data is then processed
to derive information on the rotation pattern of rice by using a
decision tree analysis that is using input data on land
characteristics which will produce total accuracy. Information on
rice field area and rotation patterns are complemented by land
productivity (tons / ha) sourced from BPS (Central Statistics
Agency) data and interviews with land cultivators and local
residents (farmers) were used to calculate the total rice production
value on dry-milled rice The results of calculations by using this
method are expected to have a fairly large surplus of calculations,
both data from BPS (Central Bureau of Statistics) and data from
interviews with land cultivators and local residents (farmers).
Thus, these results are expected to show that the land suitability
approach by using remote sensing methods for estimating rice
production can be used to produce information on rice field area
and rotation patterns with moderate to high accuracy.
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