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Increased grain production is strongly influenced by the irrigation system owned by farmers. With optimal irrigation system then the farmer will dare to buy more expensive seeds. Farmers will be willing to take greater risks because of grain production to be acquired greater. According to the Data Collection Guidelines for Food Crops and Horticulture, BPS - Ministry of Agriculture in 1993, several factors can affect the rise and fall of the average rice production per hectare is the problem of soil fertility, use of fertilizers, seeds, how to grow crops, pests and so on [2]. The purpose of this study to determine the effect of agricultural systems on seed selection in Sidrap. This study was conducted in 11 districts in Sidrap, using 99 samples. To answer the purposes of this study, the research institute using logistic regression data analysis is an approach to create predictive models such as linear regression, or commonly referred to as Ordinary Least Squares (OLS) regression. Y = B0 + B1X + e. Where e is the error variance or residual. The results showed that a good irrigation system such as the system of irrigation the farmers are more willing to take the risk to buy seed expensive that have good quality, unlike the case with rainfed and pumping which tends to farmers choose to use seed that relatively cheaper, because farmers do not dare to take the risk of failure of grain production because irrigation systems are less supportive.