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 Water Strees and Leaf Fertilization Interval on the Growth of Katuk (Sauropus androgynous L.) Plants
Abstrak: Katuk (Sauropus androgynus L.) merupakan salah satu jenis sayuran indigenous di Indonesia yang dapat memenuhi kebutuhan nutrisi manusia dan digunakan sebagai obat-obatan herbal. Tanaman yang mengalami cekaman air memerlukan tambahan unsur hara dalam mendukung proses pertumbuhan, salah satunya dengan cara pemupukan. Penelitian bertujuan mengetahui pengaruh cekaman air dan interval pemupukan daun terhadap pertumbuhan tanaman katuk. Rancangan percobaan yang digunakan adalah rancangan split-plot dalam rancangan kelompok lengkap teracak (RKLT) yang terdiri atas 2 faktor yaitu interval pemupukan daun sebagai petak utama dan cekaman air sebagai anak petak. Interval pemupukan daun terdiri dari 3 taraf, yaitu P0 (tanpa pemupukan), P1 (2 minggu sekali), dan P2 (4 minggu sekali) . Faktor cekaman air terdiri dari 4 taraf, yaitu C1 (40% kapasitas lapang (KL)), C2 (60% KL), C3 (80% KL ), dan C4 (100% KL). Penelitian dilakukan dengan 3 ulangan yang diperoleh dari 12 kombinasi, sehingga terdapat 36 satuan percobaan. Cekaman air tidak berpengaruh nyata terhadap pertumbuhan tanaman katuk. Waktu pemupukan daun berpengaruh nyata terhadap parameter jumlah cabang, jumlah daun, dan bobot panen dengan interval 2 minggu sekali. Waktu pemberian pemupukan optimal Interaksi antara cekaman air dan pemupukan daun tidak berpengaruh terhadap pertumbuhan tanaman katuk., Katuk (Sauropus androgynus L.) is one of the indigenous vegetables in Indonesia that can meet human nutritional needs and is used as herbal medicine. Plants experiencing water stress require additional nutrients to support the growth process, one of which is fertilization. The study aimed to determine the effect of water stress and foliar fertilization interval on the growth of katuk plants. The experimental design used was a split-plot design in a completely randomized group design (RKLT) consisting of 2 factors: leaf fertilization interval as the main plot and water stress as a subplot. The foliar fertilization interval consisted of 3 levels, namely P0 (without fertilization), P1 (2 weeks), and P2 (4 weeks). The water stress factor consists of 4 levels, namely C1 (40% field capacity (KL)), C2 (60% KL), C3 (80% KL), and C4 (100% KL). The study was conducted with three replications obtained from 12 combinations so that there were 36 experimental units. Water stress did not significantly affect the growth of katuk plants. The time of foliar fertilization had a significant effect on the parameters of the number of branches, number of leaves, and harvest weight at intervals of 2 weeks. Optimal fertilization time The interaction between water stress and foliar fertilization did not affect the growth of katuk plants.
Keyword: Fertilization interval, growth, katuk, water stress

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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