ABSTRACT

Black Rice is rice producing anthocyanin in high intensity and popularly consumed as functional food. Long harvesting age and low productivity are the inhibiting factors in black rice breeding. High plant crown potentially results in plant fall-down. Mutation induction is expected to be able to improve the character of black rice. Therefore, the objectives of this research were to get more early-ripening black rice mutant, with shorter plant crown and increase productivity by inducing mutation in three varieties of local black rice using gamma-ray radiation. This experiment employed three local varieties as the first factor comprised Cempo Ireng, Cempo Melik and Melik. The second factor was the gamma-ray radiation dose, consisting of 4 levels: without radiation, radiations at 100 Gy, 200 Gy and 300 Gy doses. The results indicated that Melik variety is very potential. Melik variety has shorter plant crown with a responsive character in number of tiller for higher productivity. Moreover, radiation significantly reduces the duration of flowering and harvesting. However, to achieve a more stable character and lower flowering and harvesting period, the radiation needs to be continued in the next generation. The doses of radiation produces a response that varies in both morphological and biochemical properties.

No abstract

No abstract

Enceng gondok (Eichorrnia crassipes) merupakan gulma invasif yang menutupi sebagian besar danau Rawa Pening. Keberadaan gulma ini berdampak buruk pada perikanan, pariwisata, mempercepat laju sedimentasi, serta mempercepat pengurangan air. Kegiatan ini bertujuan untuk memberikan pengetahuan, membekali keterampilan serta mendampingi masyarakat untuk mengolah enceng gondok menjadi pupuk organik layak pasar (memiliki nilai jual) yang sekaligus dapat mengurangi populasi enceng gondok sebagai upaya konservasi Rawa Pening. Pembuatan pupuk organik dilakukan di Desa Kadirejo, Pabelan, Kabupaten Semarang, Jawa Tengah. Kegiatan ini meliputi: sosialisasi, pembuatan rumah kompos, praktik pembuatan pupuk organik, aplikasi pupuk organik, analisis kadar hara pupuk organik, peluncuran produk dan pengambilan data tingkat keberhasilan kegiatan. Hasil menunjukkan bahwa setelah kegiatan ini 97,5% peserta mengetahui potensi dan mampu memproduksi pupuk organik. Pupuk organik yang dihasilkan mengandung Corganik 18,93%, N total 1,78%, P 1,10%, dan K 1,26%. Dengan pengemasan yang baik dan dilengkapi analisis hara, pupuk organik enceng gondok menjadi komoditi yang dapat diperdagangkan.