Electronic Theses and Dissertation

Samhong King (Brasssica rapa var. chinensis L.) merupakan salah satu jenis tanaman sawi yang memiliki banyak keunggulan dibandingkan sawi jenis lainnya. Produksi tanaman sawi di Provinsi Aceh terus mengalami penurunan setiap tahunnya. Hal ini diduga karena serapan unsur hara yang kurang maksimal dan luasnya lahan kurang subur di Provinsi Aceh. Salah satu upaya yang dapat dilakukan dalam meningkatkan pertumbuhan dan produksi tanaman adalah mengambalikan dan meningkatkan kesuburan tanah dengan cara memberikan pembenah tanah, yaitu biochar. Biochar berfungsi sebagai pembenah tanah yang apabila diaplikasikan ke dalam tanah akan berfungsi memperbaiki sifat tanah. Penelitian ini bertujuan untuk mengetahui pengaruh biochar dan biochar embedded terhadap pertumbuhan dan produksi sawi Samhong King. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) pola non faktorial dengan 10 perlakuan dan 3 ulangan, sehingga secara keseluruhan terdapat 30 satuan percobaan. Setiap satuan percobaan terdiri dari 4 tanaman sehingga terdapat 120 tanaman. Penelitian ini dilaksanakan di Pusat Riset Biochar dan Hutan Tropis Lestari, Sektor Timur, Universitas Syiah Kuala, Banda Aceh. Penelitian ini dilaksanakan dari bulan Juli sampai Oktober 2024. Perlakuan terdiri dari kontrol, pupuk kandang 10 t ha-1, biochar sabut kelapa 10 t ha-1, biochar sabut kelapa 20 t ha-1, biochar sabut kelapa 10 t ha-1 + pupuk kandang 10 t ha-1, biochar sabut kelapa 20 t ha-1 + pupuk kandang 10 t ha-1, biochar sabut kelapa embedded 10 t ha-1, biochar sabut kelapa embedded 20 t ha-1, biochar sabut kelapa embedded 10 t ha-1 + pupuk kandang 10 t ha-1, biochar sabut kelapa embedded 20 t ha-1 + pupuk kandang 10 t ha-1. Hasil penelitian menunjukkan bahwa tinggi sawi Samhong King berpengaruh nyata pada 21 HST pada perlakuan biochar sabut kelapa 20 t ha-1 + pupuk kandang 10 t ha-1. Jumlah daun sawi Samhong King berpengaruh nyata pada 21 HST pada perlakuan biochar sabut kelapa 10 t ha-1 + pupuk kandang 10 t ha-1. Perlakuan biochar dan biochar embedded berpengaruh tidak nyata terhadap bobot basah tajuk, bobot basah akar, bobot kering tajuk, bobot kering akar dan rasio tajuk dan akar sawi Samhong King.

Samhong King (Brassica rapa var. chinensis L.) is a type of mustard green that has many advantages over other types of mustard greens. The production of mustard greens in Aceh Province has been declining annually. This is believed to be due to inadequate nutrient uptake and the limited availability of fertile land in Aceh Province. One approach to enhance plant growth and production is to restore and improve soil fertility by applying soil conditioners, specifically biochar. Biochar functions as a soil conditioner that, when applied to the soil, improves soil properties. This study aims to determine the effect of biochar and biochar embedded on the growth and production of Samhong King cabbage. The study used a Randomized Block Design (RBD) non-factorial pattern with 10 treatments and 3 replications, resulting in a total of 30 experimental units. Each experimental unit consisted of 4 plants, totaling 120 plants. The study was conducted at the Biochar and Tropical Forest Research Center, Eastern Sector, Universitas Syiah Kuala, Banda Aceh. The study was carried out from July to October 2024. The treatments consisted of control, manure 10 t ha-1, coconut fiber biochar 10 t ha-1, coconut fiber biochar 20 t ha-1, coconut fiber biochar 10 t ha-1 + manure 10 t ha-1, coconut fiber biochar 20 t ha-1 + manure 10 t ha-1, coconut fiber biochar embedded 10 t ha-1, coconut fiber biochar embedded 20 t ha-1, coconut fiber biochar embedded 10 t ha-1 + manure 10 t ha-1, coconut fiber biochar embedded 20 t ha-1 + manure 10 t ha-1. The results showed that the height of Samhong King mustard greens was significantly affected at 21 HST in the treatment of coconut fiber biochar 20 t ha-1 + manure 10 t ha-1. The number of Samhong King mustard greens leaves was significantly affected at 21 HST in the treatment of coconut fiber biochar 10 t ha-1 + manure 10 t ha-1. The biochar and biochar embedded treatments had no significant effect on the fresh weight of the canopy, fresh weight of the roots, dry weight of the canopy, dry weight of the roots, and the canopy-to-root ratio of Samhong King cabbage.