Judul: Analisis Produktivitas Beberapa Tipe Padi
Abstrak: This research was carried out in November 2012 until April 2013. The objective of this research was to study the productivity of some types of rice and some factors that influence it. Four varieties of rice were used. The varieties are Mentik Wangi as a local variety, IPB 3S as a new plant type of rice, Inpari 13 as a new variety of rice and Hipa 8 as a hybrid type. A Randomized Complete Blocked Design with three replications using for this experiment. This research was conducted at Muara Experiment station. The result showed that Inpari 13 had a high productivity, 6 ton ha-1. The variety may use the assimilates in stems and alocate the dry matter during grain filling effectively. In addition, the resistance of Inpari 13 against bacterial leaf blight attack is one of the factors that cause the high productivity
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Judul: Productivity of Four Types of Rice Varieties and The Effect of  Paclobutrazol on Grain Size of Rice in Irrigated Paddy Fields
Abstrak: Penggunaan empat tipe varietas padi diharapkan dapat memperoleh jenis tipe varietas yang menghasilkan produktivitas tertinggi. Varietas padi tipe japonica menunjukkan adaptasi pertumbuhan yang lambat. Penelitian bertujuan mempelajari keragaan karakter agronomi dan produktivitas empat tipe varietas padi di lahan sawah irigasi. Penelitian dilaksanakan di Kebun Percobaan Sawah Baru, Departemen Agronomi dan Hortikultura, IPB University pada bulan Februari sampai Juni 2020. Rancangan percobaan menggunakan desain Rancangan Kelompok Lengkap Teracak (RKLT) 3 ulangan, sehingga diperoleh 12 satuan percobaan. Sebagai tambahan terhadap perlakuan tipe varietas, pada masimg masing perlakuan dicoba diaplikasikan ZPT paclobutrazol sebanyak 2 kali dengan konsentrasi kontrol (0), 5, 10, 15, dan 20 ppm. Hasil penelitian menunjukkan bahwa empat tipe varietas padi yang diteliti memiliki hasil yang berbeda pada beberapa karakter yang diamati meliputi, tinggi tanaman, jumlah anakan, panjang malai, jumlah gabah total per malai, dan jumlah gabah bernas per malai. Pemberian paclobutrazol (5, 10, 15, 20 ppm) pada keempat tipe varietas padi yang diuji tidak menunjukan perubahan hasil yang signifikan terhadap karakter bobot 1000 butir dan produktivitas., The use of four types of rice varieties is expected to obtain the types of varieties that produce the highest productivity. Japonica rice varieties show slow growth adaptation. This research aimed to obtain the agronomic characteristics and productivity of four types of rice varieties in irrigated paddy fields. The experiment was conducted at Sawah Baru Experimental Garden, Department of Agronomy and Horticulture, IPB University from February to June 2020. The experiment was arranged in Randomized Complete Block Design (RCBD) with 3 replications, so that 12 experimental units were obtained. In addition to the variety type treatment, paclobutrazol was used for each treatment twice with control concentrations (0), 5, 10, 15, and 20 ppm. The results showed that the four types of rice varieties studied had different results on several observed characters including plant height, number of tillers, panicle length, total number of grain per panicle, and number of full grain per panicle. The application of paclobutrazol (5, 10, 15, 20 ppm) to the four types of rice varieties tested did not show significant changes in 1000 grain weight and productivity.
Keyword: Akitakomachi, 1000 grain weight, Hipa 18, Inpari 42, IPB 3S, Paclobutrazol

Judul: Pelabelan Super Vertex Magic
Abstrak: Super vertex magic labeling is labeling on graph with is a set of edges mapped into and is a set of vertices mapped into . It has a vertex magic labeling in which and represents the size and order of the graph respectively. This manuscript proves that paths, cyclics, and disjoint union of cyclics have a super vertex magic labeling. There are four theorems to be discussed. The first theorem proves that path is super vertex magic if and only if is odd and . The second theorem proves that cyclic is super vertex magic if and only if is odd. The third theorem proves that bijection function from an edge set onto of graph can be extended to a super vertex magic labeling if and only if the set amount of edge label that incidents with a vertex in the graph, consists of sequential integers as many as vertices in the graph. The fourth theorem proves that disjoint union of the cyclics consists of cyclics with each cyclic has vertices is super vertex magic if and only if and are odd.
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