ABSTRAK
Tesis ini mengangkat isu pembangunan sektor agraria perkebunan sawit diDesa Aek Batu, Kab. Labusel, Sumut. Tinjauan teoritis menunjukkan bahwa duamodal non-finansial, yaitu modal sosial dan fisik berperan sangat penting bagikesuksesan petani dalam pembangunan usaha perkebunannya.Dengan pendekatan kuantitatif, hasil uji hipotesis menunjukkan a) adakorelasi yang kuat antara modal sosial dengan kesejahteraan petani sawit, r =0,645; b) ada hubungan yang sedang antara modal fisik dengan kesejahteraanpetani sawit, r = 0,579; serta c) ada hubungan yang sedang antara modal sosialdengan modal fisik, r = 0,401.

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ABSTRACT
This thesis is a quantitative research about the development of oil palmplantations at Aek Batu Village, Torgamba, South Labuhanbatu.Theoretical review shows that the two non-financial capital categories, iesocial and physical as factors that most important for the farmers/smallholders tothe development their oil palm plantations. Hypothesis test results indicate; a)there are high correlation between social capital with the welfare of oil palmsmallholder, r = 0.645; b) there are some moderate correlation between physicalcapital with the welfare, r = 0.579; and c) there are some moderate correlationsbetween social capital with physical, r = 0.401.