Judul: Peran Pupuk Hijau terhadap Pertumbuhan dan Hasil Tanaman Bayam (Amaranthus tricolor) secara Hidroponik
Abstrak: Nowdays, organic farming have been a lifestyle for a part of society. Demand of organic vegetable particulary spinach will increase. The objective of this study was to investigate the impact of green manure on growth and yield of spinach (Amaranthus tricolor) in hydroponics system. The study was conducted at Parung Farm, Bogor and Post Harvest Laboratory in Department of Agronomy and Horticulture IPB from April to August 2013. The experiment used randomized completely block design with one factor. The factor are five level of treatments: full dose recomended AB Mix fertilizer, combination compost Mucuna bracteata and half dose recomended AB Mix fertilizer, combination extract Mucuna bracteata and half dose recomended AB Mix fertilizer, combination compost Imperata cylindrica and half dose recomended AB Mix fertilizer, combination extract Imperata cylindrica and half dose recomended AB Mix fertilizer. The research results indicated that the combination of extract Imperata cylindrica and half dose AB Mix fertilizer give similiar result with full dose AB Mix fertilizer on growth and yield of spinach.
Keyword: Green Manure, Imperata cylindrica, Leaf Vegetable, Mucuna bracteata, Semi organic

Judul: Effect of Organic Fertilizer on Evapotranspiration, Water Use Efficiency, Growth and Yield of Red Spinach (Amaranthus tricolor) and Water Spinach (Ipomoea reptans)
Abstrak: Pemenuhan permintaan tanaman hortikultura dapat dilakukan melalui peningkatan produksi dengan mengetahui faktor iklim khususnya curah hujan, evapotranspirasi, serta kadar air tanah. Peningkatan produktivitas juga dapat dilakukan dengan pemberian pupuk organik pada tanaman. Penelitian bertujuan mengetahui pengaruh pupuk organik terhadap evapotranspirasi, efisiensi pemakaian air, pertumbuhan, dan hasil bayam merah (Amaranthus tricolor) dan kangkung (Ipomoea reptans). Percobaan dilakukan pada tanaman bayam merah dan tanaman kangkung secara terpisah. Kedua percobaan disusun dengan Rancangan Acak Kelompok (RAK) yang terdiri dari 3 perlakuan, yaitu tanpa pupuk: 0 ton ha-1 (P1), pupuk kandang: 10 ton ha-1 (P2) dan pupuk kompos organik: 10 ton ha-1 (P3) dengan 3 ulangan. Hasil penelitian menunjukkan bahwa pemberian perlakuan pupuk pada bayam merah memberikan pengaruh terhadap tinggi tanaman, jumlah daun, panjang akar, panjang daun, koefisien evapotranspirasi, kebutuhan air tanaman, serta efisiensi pemakaian air. Bobot segar tanaman bayam tertinggi yaitu 1866,7 g/3m2 dengan perlakuan pemberian pupuk kandang. Perlakuan pupuk pada kangkung berpengaruh pada tinggi tanaman, bobot segar sampel, bobot kering sampel, efisiensi pemakaian air, kadar air tanah. Pemberian pupuk organik juga memberikan pengaruh pada berat basah dan berat kering, khususnya pemberian pupuk kandang yang memiliki bobot segar paling tinggi yaitu 2166,7 g/3m2., Fulfilling the demand for horticultural crops can be done through increasing production by knowing climatic factors, especially rainfall, evapotranspiration, and soil water content. Increased productivity can also be done by applying organic fertilizer to plants. Research aims determine the effect of organic fertilizer on evapotranspiration, water use efficiency, growth, and yield of red spinach (Amaranthus tricolor) and water spinach (Ipomoea reptans). The experiment was carried out on red spinach and water spinach separately. Both experiments were arranged in a Randomized Block Design (RBD) consisting of 3 treatments, namely without fertilizer:0 ton ha-1 (P1), manure: 10 ton ha-1 (P2), and organic compost: 10 ton ha-1 (P3) with 3 replicates. The results showed thatfertilizer treatment on red spinach has an effect on plant height, number of leaves, root length, leaf length, evapotranspiration coefficient, plant water requirements, and water use efficiency. The highest fresh weight of spinach plants was 1866.7 g/3m2 with the treatment of manure. Fertilizer treatment on water spinach affects plant height, sample fresh weight, sample dry weight, water use efficiency, soil moisture content. The application of organic fertilizer also has an effect on the wet weight and dry weight, especially the application of manure which has the highest fresh weight of 2166.7 g/3m2.
Keyword: Compost, Evapotranspiration, Growth, Manure, Productivity

Judul: Identifikasi Karakter Pada Plat Nomor Kendaraan Menggunakan Ekstraksi Fitur ICZ dan ZCZ dengan Metode Klasifikasi K-NN
Abstrak: License plate is a unique code consisting of letters and numbers arrangement. Each vehicle has a license plate that serve as the identity code of the vehicle itself. Since license plates are unique, it often used for recording, such as in the parking area. The character identification characters on the license plates are made automatically using the input in the form of license plate images to facilitate the recording process. K-NN classification and feature extraction ICZ and ZCZ used in the identification of character identification. ICZ and ZCZ feature extraction obtain features by computing the character centroids and divide the image into n equal zones then computing the average distance from the character centroid to every pixel in the image. The character identification accuracy using 14 zones and ICZ are 97.00% while using ICZ+ZCZ feature extraction are 98.17%. The license plate identification accuracy using feature extraction plates ICZ+ZCZ are 72.31% for zero tolerance and 89.23% for one fault tolerance.
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