Judul: Test of the Effectiveness of Thermal Hydrolysis of  Pineapple (Ananas comosus L. Merr.) Waste for Insecticide Substitution in  Controlling Mealybugs (Dysmicoccus brevipes).
Abstrak: M.AZIZ IZZATULLAH. Uji Efektivitas Hidrolisis Termal Limbah Nanas (Ananas comosus L. Merr.) untuk Subtitusi Insektisida dalam Pengendalian Kutu Putih (Dysmicoccus brevipes). Dibimbing oleh HERDHATA AGUSTA dan DHIKA PRITA HAPSARI. Produksi nanas yang tinggi selain menghasilkan keuntungan yang besar namun juga menghasilkan limbah yang tinggi, limbah tersebut dapat memberi efek negatif terhadap lingkungan kita. Peningkatan produksi nanas dapat dipicu dengan pemeliharaan yang baik mulai dari pengairan, pemberian fungisida, herbisida dan insektisida. insektisida biasa digunakan untuk menangani hama yang menurunkan produktivitas panen. Penelitian ini bertujuan untuk menganalisis efektivitas insektisida dari ekstrak limbah nanas terhadap hama kutu putih. Percobaan dilaksanakan di PT Great Giant Pineapple (GGP). Kecamatan Terbanggi Besar, Kabupaten Lampung Tengah, Lampung, Indonesia. Penelitian disusun dengan menggunakan Rancangan Kelompok Lengkap Teracak (RKLT) Tersarang satu faktor. Perlakuan dibagi menjadi 8 kombinasi perlakuan konsentrasi limbah nanas atau hidrolisat (H), asap cair (A), dan Standar (S). Yaitu 0% (kontrol), standar, 80%S+20%H, 60%S + 40%H, 80%S +2 0%A, 60%S + 40%A, 80%S + 10%H + 10%A, 60%S + 200%H + 20%A. Setiap perlakuan diulang sebanyak 20 kali sehingga terdapat 140 satuan unit percobaan pada uji insektisida nabati. Pengaplikasian insektisida nabati berbahan baku limbah bromelain nanas, berpengaruh nyata pada tinggi tanaman, lebar daun, dan kematian kutu putih dan tidak berpengaruh nyata terhadap panjang daun. Larutan kombinasi insektisida nabati menyebabkan kematian hama kutu putih (mealybug) sebesar 100% setelah hari ke-3 dan hari ke 6, baik pada substitusi aplikasi pestisida sintetik sebesar 20% maupun 40%. Hidrolisat tersebut mampu menggantikan kebutuhan sintetik standar hingga 20% bahkan 40% untuk pengendalian kutu putih nanas pada crown nanas Kata kunci: asap cair, crown, kematian, M. AZIZ IZZATULLAH. Test of the Effectiveness of Thermal Hydrolysis of Pineapple (Ananas comosus L. Merr.) Waste for Insecticide Substitution in Controlling Mealybugs (Dysmicoccus brevipes). Supervised by HERDHATA AGUSTA and DHIKA PRITA HAPSARI. High pineapple production not only produces large profits but also produces high levels of waste, this waste can have a negative effect on our environment. Increasing pineapple production can be triggered by good maintenance starting from irrigation, applying fungicides, herbicides and insecticides. Insecticides are commonly used to treat pests that reduce crop productivity. This research aims to analyze the effectiveness of insecticides from pineapple waste extract against mealybug pests. The experiment will be carried out at PT Great Giant Pineapple (GGP). Terbanggi Besar District, Central Lampung Regency, Lampung, Indonesia. The research was structured using a Randomized Complete Group Design (RKLT) nested on one factor. The treatments were divided into 8 treatment combinations of pineapple waste concentration or hydrolyzate (H), liquid smoke (A), and Standard (S). Namely 0% (control), standard, 80%S+20%H, 60%S + 40%H, 80%S +2 0%A, 60%S + 40%A, 80%S + 10%H + 10%A, 60%S + 200%H + 20%A. Each treatment was repeated 20 times so that there were 140 experimental units in the vegetable insecticide test. The application of a botanical insecticide made from pineapple bromelain waste had a significant effect on plant height, leaf width and mealybug death and had no significant effect on leaf length. The combination solution of vegetable insecticides caused 100% death of mealybugs after day 3 and day 6, both at 20%
Keyword: asap cair, crown, kematian

Judul: Potential Utilization of Hydrolyzed Pineapple Waste Solution as Bioherbicide in Pineapple Plant Cultivation at PT. Great Giant Pineapple, Lampung
Abstrak: Nanas merupakan buah yang cukup diminati masyarakat Indonesia. Tingkat budidaya nanas di Indonesia sudah cukup tinggi. Nanas kebanyakan hanya diambil buahnya sehingga menyisakan limbah berupa kulit dan bonggol dalam jumlah yang cukup besar apabila tidak diolah dan dimanfaatkan secara bijak. Hambatan yang cukup beragam juga membuat produksi nanas menurun. Salah satu hambatan dari budidaya nanas adalah gulma. Gulma mampu menyerap nutrisi yang diberikan ke nanas sehingga mengganggu produktivitas dari tanaman nanas. Bioherbisida dari olahan limbah nanas menjadi salah satu alternatif dalam mengendalikan gulma di budidaya nanas dengan mengusung konsep perusahaan dapat menghemat biaya untuk pembelian herbisida sintetik dan mensubtitusikan dosisnya dengan bioherbisida dari limbah produksi perusahaan. Penelitian ini dilakukan dengan tujuan menguji potensi dari limbah nanas menjadi subtitusi herbisida sintetik yang digunakan oleh perusahaan. Percobaan dilakukan sebanyak 2 kali berupa tahap screening dan aplikasi lahan. Metode yang dilaksanakan adalah dengan mencampurkan herbisida sintetik (Diuron 80WP dan Ametryn 80WP) sebagai herbisida standar perusahaan dengan bioherbisida (Hidrolisat 300 dan Hidrolisat 250) buatan IPB serta asap cair dari limbah nanas yang diolah oleh perusahaan. Hasil pengamatan menunjukan bahwa subtitusi herbisida sintetik dapat menekan pertumbuhan gulma pada fase pre-emergence dan memberikan toksisitas tinggi pada beberapa jenis gulma pada fase early post-emergence, namun pada aplikasi lahan tidak terlalu terlihat dampak herbisida terhadap penekanan gulma maupun toksisitasnya terhadap tanaman nanas. Kata kunci : bioherbisida, gulma, herbisida sintetik, hemat biaya, Pineapple is a fruit that is quite popular in Indonesia. The level of pineapple cultivation in Indonesia is quite high. Most pineapples are only taken as fruit, leaving a large amount of waste in the form of skin and stump if not processed and utilized wisely. Various obstacles also cause pineapple production to decline. One of the obstacles to pineapple cultivation is weeds. Weeds are able to absorb nutrients given to pineapples, thus disrupting the productivity of pineapple plants. Bioherbicide from processed pineapple waste is one alternative in controlling weeds in pineapple cultivation by carrying out the concept that companies can save costs for the purchase of synthetic herbicides and substitute the dose with bioherbicides from company production waste.. This study was conducted with the aim of testing the potential of pineapple waste to be a substitute for synthetic herbicides used by companies. The experiment was conducted twice in the form of screening and land application stages. The method implemented was by mixing synthetic herbicides (Diuron 80WP and Ametryn 80WP) as the company's standard herbicides with bioherbicides (Hydrolysate 300 and Hydrolysate 250) made by IPB and liquid smoke from pineapple waste processed by the company. Observations showed that the substitution of synthetic herbicides can suppress weed growth in the pre-emergence phase and provide high toxicity to several types of weeds in the early post-emergence phase, but in land application the impact of herbicides on weed suppression and toxicity to pineapple plants is not very visible. Keywords: bioherbicide, weeds, synthetic herbicides, cost-effective.
Keyword: bioherbicide, weeds, synthetic herbicides, cost-effective

Judul: Query Expansion based on Bilingual Dictionary Using Conditional Probability
Abstrak: Query expansion is a technique that can be used to bridge vocabulary gaps between queries and documents in the collection. With query expansion, user will be helped to formulate queries well so that user will optimize the search result. In this study, the expansion term was resulted from the translation of bilingual dictionary. Subsequently, several terms of expansion were elected based on the closeness of its relationship with the original query. This research showed that conditional probability can be used to select expansion term in bilingual translation method query expansion. The result of 1000 documents was more than 97% relevan document can be retrieved by this system. The more expansion term used, the larger number relevan document was retrieved.
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