Model Pendugaan Produksi Benih Indigofera zollingeriana Miq.

Abstract

Model pendugaan produksi benih sangat penting dalam membantu proses perencanaan produksi lebih akurat. Penelitian ini bertujuan membangun model penduga produksi benih Indigofera di UP3J-IPB, Bogor, Jawa Barat. Metode yang digunakan yaitu purposive sampling pada 9 pohon. Variabel yang digunakan yaitu jumlah cabang, ranting, tandan, polong, biji, dan bobot 1000 biji. Pembangunan model pendugaan menggunakan analisis deskriptif, analisis korelasi, dan analisis regresi linier berganda. Pengategorian produksi benih menggunakan uji lanjut Tukey. Uji daya kecambah benih menggunakan ANOVA dan uji lanjut LSD. Hasil penelitian diperoleh tiga model penduga produksi benih Indigofera yaitu Yb1 (g) = 101,290 + 11,817X1 (jumlah cabang) + 0,088X4 (jumlah polong)  0,004X5 (jumlah biji) (r=97,1%), Yb2 (g) = 97,609 + 0,050X4 (jumlah polong) (r=97,3%), dan Yb3 (g) = 122,460 + 483,266X1 (jumlah cabang) (r=38,9%). Kategori produksi benih terdiri dari, produksi rendah (<6000 polong), produksi sedang (600015000 polong), produksi tinggi (>15000 polong). Kategori produksi rendah dan produksi tinggi memiliki daya kecambah lebih tinggi (95%) daripada produksi sedang (81%).

The seed production estimation model is important to support the planning of production process accurately. This research aims was to develop a model of Indigofera seed production at UP3J-IPB, Bogor, West Java. The method was purposive sampling on 9 trees. The variables used are the number of branches, twigs, bunches, pods, seeds, and the weight of 1000 seeds. The development of the estimation model useds descriptive analysis, correlation analysis, and multiple linier regression analysis. The seed production categories was determine by Tukey’s advanced test. The seed sprout power test uses ANOVA and continues LSD testing. The results of the study obtained three estimating models of Indigofera seed production, namely Yb1 (g) = 101,290 + 11,817X1 (number of branches) + 0,088X4 (number of pods)  0,004X5 (number of seeds) (r=97,1%), Yb2 (g) = 97,609 + 0,050X4 (number of pods) (r=97,3%), dan Yb3 (g) = 122,460 + 483,266X1 (number of branches) (r=38,9%). The seed production category, namely low production (<6000 pods), medium production (600015000 pods), high production (>15000 pods). The low production and high production categories have higher sprout power (95%) than medium production (81%).