Judul: Pemanfaatan Paclobutrazol dalam Budidaya Gerbera (Gerbera jamesonii) sebagai Tanaman Hias Pot
Abstrak: Researchutilization ofpaclobutrazolincultivationof gerbera(Gerbera jamesonii) asornamental pot plant was conducted at plantation of Highland Park Bogor Hotel in April to August 2013. The objective of the research was to get the best concentration of paclobutrazol on growth and flowering of gerbera flowers in pots.Research using a completely randomized design with 4 treatments paclobutrazol : control (P0), 20 ppm (P1), 40 ppm (P2), and 60 ppm (P3). The research results showed that application of paclobutrazol can be seen in the growth of vegetative phase such as plant height, number of leaves, leaf length, leaf width and number of tillers. Paclobutrazol affected the ideal proportion of gerbera’s plant in pot such as comparison between plant height with pot height and plant canopy diameter with the diameter of pot. The application of paclobutrazol inhibit generative phase on gerbera plants such as time the first flower buds appear , the number of flowering plants, the diameter of flower and the diameter of the flower stalk.
Keyword: paclobutrazol, ornamental pot plant, flowering,gerbera

Judul: Uji Efektivitas Penambahan Beberapa Jenis Pupuk Organik Terhadap Pertumbuhan Dan Pembungaan Bunga Potong Gerbera (Gerbera Jamesonii) Var. Red Ruby
Abstrak: The research aimed to study the effectiveness of addition some types of organic fertilizers on growth and flowering of Gerbera (Gerbera jamesonii) cut flower var. Red Ruby. This research was conducted from March 2010 to December 2010 at Balai Penelitian Tanaman Hias (BALITHI) Segunung, West Java. This research was used single factor treatment that arranged in randomized block design enviroment. Organic fertilizers was used consist of three types (chicken manure, goat manure, and green manure). The treatments were administered in the form of top soil volume ratio with certain type of organic fertilizers. The result showed that addition some type of organic fertilizers are not significantly affected to some variable (the number of sucker, the lenght and width of leaves, leaf dry weight, the number of flower, stalk flower diameter, vase life of flower). The addition of green manure with volume ratio of 1:1 and 1:3 increases the amount of leaf growth. The addition of chicken manure with volume ratio of 1:2 increases flower diameter while long stalk flower increased by addition chicken manure at volume ratio of 1:1. Treament with addition goat manure at volume ratio 1:1 showed the fastest of initiation time in flowering.
Keyword: 

Judul: Karakteristik matriks subnormal
Abstrak: Misalkan adalah ruang hasil kali dalam kompleks berdimensi n+k dan Wadalah subrang V berdimensi, di mana basis adalah perfuasan basis W. Misalkan T:WV adalah transformasi linear, maka terdapat matriks representasi M(A, B) untuk T. M(A, B) adalah matriks kompleks berukuran (n+k)xn dengan bentuk, M(A,B)= A B di mana A dan B berturut-turut adalah matriks kompleks berukuran nxn dan kxn. Pada tulisan ini diasumsikan A adalah matriks normal, yaitu jika memenuhi AA AA, dengan A didefinisikan sebagai AA Matriks M(A, B) berukuran (n+k)xn disebut subnormal jika memiliki perluasan normal, yaitu, jika terdapat matriks X dan Y sedemikian sehingga matriks BY yang berukuran (n+k) x(n+k) adalah normal [Insel, 1997]. Kesubnormalan matriks M(A, B) berhubungan dengan kekolinearan himpunan A(A; B) yang didefinisikan sebagai berikut: Λ(ΑΒ) = (λεσ(4) Bx0, untuk suatu xe E₁(A)}.
Keyword: