Judul: Growth, Yield and Efficiency of Water Use on Water Spinach and Red Amarath on Various Components of Planting Media in Pots
Abstrak: Kangkung dan bayam merah merupakan komoditas sayuran yang memiliki nilai komersial tinggi dan digemari masyarakat Indonesia, sehingga menyebabkan permintaan kedua komoditas tersebut meningkat. Perlu dilakukan usaha peningkatan produksi untuk jangka panjang. Salah satu upaya untuk meningkatkan produksi kangkung dan bayam merah melalui pengaturan media tanam dalam pot. Pengaturan media tumbuh tanaman dapat membuat pertumbuhan tanaman menjadi lebih baik dan mengefisiensikan pemakaian air. Sistem pengaturan media tanam yang ingin dikembangkan pada penelitian ini yaitu menggunakan media tanam tanah dan pupuk kandang dengan volume yang berbeda yaitu tanah (kontrol), 1:1, 1:2 dan 1:3 (tanah:pupuk kandang). Penelitian ini bertujuan untuk mengetahui pengaruh berbagai komponen media tanam terhadap pertumbuhan, produksi dan efisiensi pemakaian air dari penanaman kangkung dan bayam merah dalam pot. Penelitian dilaksanakan di Kelurahan Sukahati, Kecamatan Cibinong Bogor yang dimulai pada Februari hingga Maret 2022. Penelitian dilakukan berdasarkan rancangan acak kelompok lengkap (RAKL) dengan 3 ulangan dan 4 taraf perlakuan komponen media tanam pada masingmasing percobaan kangkung dan bayam merah. Hasil penelitian menunjukkan bahwa perlakuan media tanam dapat meningkatkan tinggi tanaman, jumlah daun, bobot segar dan bobot kering tanaman. Perlakuan tanah:pupuk kandang 1:3 menghasilkan tinggi tanaman, jumlah daun, bobot segar dan bobot kering tanaman lebih tinggi dibandingkan perlakuan lainnya. Perlakuan media tanam berpengaruh nyata terhadap evapotranspirasi total dan koefisien evapotranspirasi kangkung dan bayam merah yang ditunjukkan dengan perlakuan tanah:pupuk kandang 1:3 menghasilkan evapotranspirasi total dan koefisien evapotranspirasi lebih tinggi dan berpengaruh nyata terhadap efisiensi pemakaian air., Water spinach and red amaranth are vegetable commodities that have high commercial value and are favored by the people of Indonesia, causing the demand for these two commodities to increase. One of the efforts to increase water spinach and red amaranth production are by adjusting the planting media in the pots. By adjusting plant growth media, it can make plant growth better and make water use more efficient. The system for adjusting the planting media to be developed in this study is using soil and manure planting media with different components, namely soil (control), 1:1, 1:2 and 1:3 (soil: manure). This study aims to determine the effect of the composition of the growing media on the growth, production and efficiency of water use from planting water spinach and red amaranth in pots. This study aims to determine the effect of growing media componentson the growth, production and efficiency of water use from planting water spinach and red amaranth in pots. The research was carried out at Sukahati Urban Village, Cibinong Sub-Distric, Bogor District, starting from February to March 2022. This study was conducted based on a Completely Randomized Bock Design which consisted of 4 levels of treatment for the composition of the planting media for each experiment of water spinach and red amaranth. The results showed that the planting media treatment could increase plant height, number of leaves, wet weight and dry weight of the plant. The soil: manure 1:3 treatment resulted in higher plant height, number of leaves, wet weight and dry weight of plants compared to other treatments. Planting media treatment had a significant effect on total evapotranspiration and evapotranspiration coefficient of water spinach and red
Keyword: efficiency of water use, plant water requirements, planting media, manure

Judul: Growth of Water Spinach and Spinach Due to the Application of Inorganic Liquid Fertilizer in the Hydroponic System
Abstrak: Hidroponik adalah salah satu metode alternatif dalam budidaya sayur, metode ini tidak memerlukan area yang luas. Produksi dari hidroponik dapat ditingkatkan dengan pemenuhan nutrisi yang tepat. Penelitian ini bertujuan menganalisis efek penambahan pupuk anorganik cair pada larutan hara AB mix terhadap pertumbuhan tanaman kangkung dan bayam. Rancangan penelitian yang digunakan adalah Rancangan Acak Kelompok. Perlakuan yang diamati adalah konsentrasi larutan hara yang terdiri dari 3 taraf. Perbandingan air, larutan A, larutan B, dan pupuk cair (v/v) yaitu P0 (kontrol) = 1000:5:5:0, P1 =1000:5:5:5, dan P2 = 1000:5:5:15. Parameter yang diamati adalah tinggi tanaman, jumlah daun, jumlah cabang, luas daun, berat segar, berat kering, dilakukan juga uji kualitatif kandungan nitrat daun. Hasil penelitian menunjukkan bahwa perlakuan P0 memiliki pertumbuhan tercepat, sedangkan pertumbuhan paling lambat terlihat pada P2. Uji nitrat daun P2 menunjukkan hasil yang negatif. Perlakuan P0 juga memiliki berat segar dan berat kering tanaman yang paling tinggi dibanding dua perlakuan lainnya. Penambahan pupuk anorganik cair tidak dapat meningkatkan pertumbuhan pada kangkung dan bayam., Hydroponics is an alternative method in vegetable cultivation, this method does not require a large area. Hydroponics production can be increased with the fulfilment of proper nutrition. This research aimed to analyze the effect of adding liquid inorganic fertilizer to the AB mix nutrient solution on water spinach and spinach growth. This research used a Randomized Block Design. The treatments observed were the concentration of nutrient solution which consisted of 3 levels. The treatments were mixed of water, solution A, solution B, and liquid fertilizer (v/v), namely P0 (control) = 1000:5:5:0, P1 =1000:5:5:5, and P2 = 1000:5:5:15. The parameters observed were plant's height, number of leaves, number of branches, leaves area, leaves nitrate content, and plant fresh and dry weights. The results showed that the P0 treatment had the fastest growth, while the slowest growth was seen in P2. The leaf nitrate test of P2 plants showed negative results. The P0 treatment also had the highest fresh and dry weights per plant compared to the other two treatments. The addition of liquid inorganic fertilizer did not increase the growth of water spinach and spinach.
Keyword: AB mix, hydroponics, liquid inorganic fertilizer, spinach, water spinach

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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