Analisis Optimalisasi Pola Tanam Daerah Irigasi Sibarau Kabupaten Serdang

Abstract

Irrigation is intended to support the productivity of farming in order to boost agricultural production in the context of national food security and welfare of the community, especially farmers are realized through the sustainability of irrigation system. Any work related to water resources, hydrologic analysis is absolutely necessary to obtain a picture of the hydrological condilions of a region and to support decision making. One of the hydrological parameters that are important in a job selated to water resources is the water discharge. Preliminary studies done by collecting references to be used as a basis in reseurch. Collecting some literature from books and papers relating to the study,in particular cropping pattern. Collecting data - data that is required is secondary data. Secondary data is the data obtained from the relevant agencies, public institutions, and other interested parlies related to the discssion. In looking for the influenced by tillage, percolation, effctive precipitution, evapotranspiration, irrigation efficiency and crop coeffiecients.In Determining the availability of water or debit mainstay on Sibarau River watershed, used methods FJ Mock and Methods prniman for earch year for 10 years. Based on the analysis of water demand , the importance of the planning of cropping patterns. Analysis is based on data obtained Rainfall maximum rainfall average - average occured in October amounted to 263 nun and the lowest in February at 83 ninl the mainstay discharge in January amounted to 4.43 m3 sec. From the analysis of water requirements, oblained planning cropping patterns based on the calculation of rainfall the last 10 years , early planting brgan in July 11 Because most irrigation water demand is low.