Judul: Effect of Irrigation Volume on the Growth of Katuk (Sauropus androgynous (L.) Merr.) at Several Periods
Abstrak: Katuk (Sauropus androgynus (L.) Merr.) adalah tanaman perdu tahunan yang sering dimanfaatkan sebagai sayuran konsumsi, alternatif obat herbal, dan pewarna alami. Penelitian ini bertujuan untuk mempelajari pengaruh volume irigasi terhadap pertumbuhan katuk pada beberapa periode panen. Penelitian dilaksanakan pada bulan November 2022–Maret 2023. Percobaan dilakukan menggunakan rancangan kelompok lengkap teracak faktor tunggal, yaitu volume irigasi. Taraf tingkat volume irigasi terdiri dari volume irigasi 0,7 × Eo (evaporasi); 1,2 × Eo; 1,7 × Eo; dan 2,2 × Eo. Penelitian dilakukan dengan 4 kali ulangan, sehingga jumlah satuan percobaan sebanyak 16 satuan percobaan. Tiap satuan percobaan terdiri dari 5 tanaman dengan total jumlah tanaman adalah 80 tanaman percobaan. Hasil penelitian menunjukkan bahwa volume irigasi sampai 2,2 × Eo meningkatkan bobot panen total per tanaman, bobot daun total per tanaman, bobot batang basah panen total per tanaman, dan bobot brangkasan, namun berdasarkan nilai efisiensi penggunaan air irigasi (EPAI), volume irigasi 1,2 × Eo lebih efisien dalam menggunakan air yang diberikan dengan volume irigasi sebesar 424,8 mm denganhasil EPAI sebesar 0,022 g mm-1 per tanaman., Katuk (Sauropus androgynus (L.) Merr.) is an annual shrub that is often used as a consumption vegetable, alternative herbal medicine, and natural coloring. This research aims to study the effect of irrigation volume on the growth of katuk in several harvest periods. The research was conducted in November 2022–March 2023. The experiment was performed using a single-factor Randomized Complete Group Design (RKLT), namely the irrigation volume factor. The irrigation volume level included 4 treatment levels, namely irrigation volume of 0,7 × Eo (evaporation); 1,2 × Eo; 1,7 × Eo; and 2,2 × Eo. The research was conducted with 4 replications, resulting in 16 experimental units. Each experimental unit consisted of 5 plants with 80 experimental plants. The results showed that irrigation volume up to 2,2 × Eo increased in total harvest weight per plant, total leaf weight per plant, total harvest wet stem weight per plant, and stalk weight, but based on the efficiency of irrigation water use (EPAI) value, the irrigation volume of 1,2 × Eo was more efficient in using the water given with an irrigation volume of 424,8 mm with an EPAI result of 0,022 g mm-1 per plant.
Keyword: air, koefisien tanaman, sayuran indigenous

Judul: Effect of Fertilization Dosage on Growth and  Production of Katuk (Sauropus androgynus) Cuttings Using Fertigation Through  Drip Irrigation
Abstrak: Keberadaan tanaman indigenous dapat menambah pilihan jenis sayuran sebagai konsumsi masyarakat. Salah satu tanaman yang masuk dalam tanaman indigenous adalah katuk. Untuk menunjang pertumbuhan tanaman katuk yang maksimal diperlukan adanya aplikasi pemupukan dan penyiraman yang efisien. Penelitian ini bertujuan mengetahui dosis pemupukan yang optimal pada budidaya katuk. Kegiatan penelitian dilaksanakan mulai bulan November 2022 hingga April 2023 di Kebun Percobaan Leuwikopo. Percobaan dilakukan dengan metode rancangan kelompok lengkap teracak sebanyak tiga kali ulangan. Penelitian terdiri dari faktor tunggal yaitu dosis pupuk N, P, dan K dengan lima taraf dosis (0%, 50%, 100%, 150%, 200%). Hasil penelitian menunjukkan bahwa pengaruh dari pemupukan tidak memberikan respon yang nyata, kecuali pada peubah tinggi cabang pada umur tanaman 10-13 MST. Meskipun tidak berpengaruh nyata, terdapat indikasi bahwa bobot basah, bobot daun, dan produktivitas total akan meningkat seiring peningkatan dosis pupuk yang diberikan., The existence of indigenous plants can increase the choice of vegetables for public consumption. One of the indigenous plants is katuk. To support the maximum growth of katuk plants, efficient fertilization and watering applications are needed. This study aims to determine the optimal dose of fertilization in katuk cultivation. Research activities were carried out from November 2022 to April 2023 at the Leuwikopo Experimental Garden. The experiment was conducted using a randomized complete group design method with three replications. The research consisted of a single factor, namely the dose of N, P, and K fertilizers with five dose levels (0%, 50%, 100%, 150%, 200%). The results showed that the effect of fertilization did not give a real response, except for the variable of branch height at plant age 10-13 weeks after planting. Although not significantly affected, there are indications that wet weight, leaf weight, and total productivity will increase as the dose of fertilizer applied increases.
Keyword: indigenous vegetables, inorganic fertilizer, productivity

Judul: Grup dan Homomorfisma Grup pada Rubik Revenge
Abstrak: Rubik cube is a kind of puzzle game. A player must arrange rubik sides, which have been disordered, back to the position where every side has the same colour. This paper does not focus on the settlement solution, but instead on proving the existence of a group homomorphism between rubik movement group and S96 symmetric permutation group in rubik revenge. Firstly, it has been proved that rubik movement set is a group. Then, it also has been proved that the M set, which contains numeric labels of 1 until 96 in cubinos sides, is S96 symmetric permutation group.
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