ABSTRAKTujuan penelitian ini untuk mengetahui pengaruh pemberian dosis pupuk organik dan penggunaan jenis varietas terhadap pertumbuhan tanaman sawi (Brassica juncea L). Penelitian menggunakan Rancangan Acak Kelompok faktorial dengan 2 faktor. Faktor pertama adalah pupuk organik kascing, yaitu (P) yang terdiri dari 4 taraf, yakni : P0 = 0 g/ tanaman, P1 = 30 g/ tanaman, P2 = 60 g/tanaman, P3 = 90 g/ tanaman dan faktor kedua yaitu varietas (V) yang terdiri dari 3 taraf, yakni : V1 = varietas Tosakan, V2 = varietas Kumala, V3 = varietas Sri Tanjung. Kombinasi kedua faktor tersebut menghasilkan 12 kombinasi perlakuan yang masing-masing perlakuan diulang sebanyak 3 kali, sehingga didapat 36 satuan percobaan. Setiap satuan percobaan terdiri dari 2 polybag yang masing-masing berisi satu tanaman, sehingga dibutuhkan 72 tanaman sawi. Parameter yang diamati adalah tinggi tanaman, jumlah daun, bobot basah tanaman, bobot kering tanaman, bobot kering akar. Perlakuan pupuk kascing berpengaruh dan lebih efisien pada dosis 60 g terhadap parameter pengamatan tinggi tanaman pada umur 9-29 HST dengan nilai 18,6 cm; jumlah daun pada umur 14 HST dengan jumlah 5,7 helai; bobot basah tanaman 10,3 g; bobot kering tanaman 1,3 g; bobot kering akar 0,4 g. Jenis varietas belum berpengaruh pada semua parameter. Interaksi kedua perlakuan menunjukkan belum berpengaruh terhadap semua parameter pengamatan.Kata kunci: Pupuk organik, tanaman sawi, dan varietas
ABSTRACTThe research was aimed to know the effect of dose of organic fertilizer to growth and yield varieties of mustard (Brassica juncea L.). The method used was a randomized block design a Randomized Completely Block Design with 2 factors. The first factor was the organic fertilizer, namely (P) and the second factor was the variety. The first factors was the organic vermicompost, which consists of 4 levels, namely: P0 = 0 g / plant, P1 = 30 g / plant, P2 = 60 g / plant, P3 = 90 g / plant the second factor was varieties, which consists of three levels, namely: V1 = Tosakan varieties, V2 = Kumala varieties, V3 = Sri Tanjung varieties. Thus there was 12 combinations of treatment, each treatment was repeated three times, in order to get 36 experimental unit. Parameters measured were plant height, number of leaves, plant fresh weight, plant dry weight, root dry weight. The results of this research showed that vermicompost fertilizer showed significant effect on the observation parameters plant height, root length, fresh weight of plant, plant dry weight, root dry weight. Vermicompost fertilizer dose of 60 g / plant give the best average results in almost all variables observation (plant height 18,6 g, fresh weight of plant 10,3 g, plant dry weight 1,3 g and root dry weight 0,4 g. Kumala varieties gave the highest rates in the observation parameters number of leaves 7,2 sheet and fresh weight of plant 10,0 g. The interaction of both treatment showed no real effect on all parameters of observation.