Pendapatan Petani Kemiri dan Model Penduga Berat Kemiri (Aleurites moluccana) di Kabupaten Sigi, Sulawesi Tengah

Abstract

Kemiri merupakan hasil hutan bukan kayu yang bernilai ekonomi tinggi bagi masyarakat. Akan tetapi, penelitian mengenai hubungan antara dimensi pohon dan berat kemiri belum banyak dilakukan. Penelitian ini bertujuan menghitung rata rata pendapatan petani kemiri, menganalisis hubungan berat kemiri dengan dimensi pohon dan menyusun model penduga berat kemiri. Model disusun menggunakan regresi linier dan non linier. Hasil penelitian menunjukkan bahwa rata-rata pendapatan yang diperoleh petani sebesar Rp2.510.460,53/ha/bulan, variabel dengan keeratan hubungan tertinggi terhadap berat kemiri adalah umur dan lebar tajuk sedangkan model terbaik dalam menduga berat kemiri adalah model M3a dengan persamaan B = 2,070+0,004*T^2*U. Model tersebut dapat menjelaskan variasi berat kemiri sebanyak 41% dengan AIC 755,46, dan RMSE sebesar 13,02 kg/bulan. Selain itu, model tersebut telah memenuhi asumsi homoskedastisitas dan normalitas sisaan.

Candlenut is non-timber forest product that have high economic value for the community. However, there has not been much research on the relationship between tree dimensions and candlenut weight. This study aims to calculate the average income of candlenut farmers, analyze the relationship between candlenut weight and tree dimensions and compile a model to estimate the weight of candlenut. The models were arranged using linear and non-linear regression. The results showed that the average income obtained by farmers was Rp2,510,460.53/ha/month, the variables with the highest relationship with the weight of the candlenut were age and width of the crown while the best model in estimating the weight of the candlenut was the M6 model with the equation B = 2,070+0,004*T^2*U. The model can explain the variation in candlenut of 41% with AIC of 755,46, and RMSE of 13,02 kg/month. In addition, the model has met the assumptions of residual homoscedasticity and normality