Judul: Models of leave-tea plucking schedule (the case study on perkebunan gunung mas ptpn viii west java)
Abstrak: AMALIA RESTIATI. Models of Leave-Tea Plucking Schedule (The Case Study on Perkebunan Gunung Mas PTPN VIII West Java). Under the direction of MARIMIN, MACHFUD, and MUHAMMAD ZEIN NASUTION. The purpose of this research is to formulate scheduling model of leave-tea plucking, at which Gunung Mas Plantation, West Java is used as the case study. Linear programming and fuzzy linear programming were used as the basis for the model formulation. The objective function of linear programming formulation is to maximize leaves production with two constraints. The first constraint is the extent of plucking area and the second one is numbers of pluckers. The solutions of this scheduling model are maximum values of leaves production which are achieved by using LINDO. In this case, fuzzy linear programming gives better results than non-fuzzy linear programming because it is relevant with the condition of the plantation. Productivities of tea are higher in rainy seasons than dry season. The productions of tea leaves increase in the second and third pruning year (TP 2 and TP 3) and decrease in the fourth year (TP 4). There were two scenarios involved in this research. Scenario 1 is aimed to maximize leaves production in order to meet plant capacity. Scenario 2 has an objective to maximize the extent of plucking area to increase leaves production that could also reach plant capacity. The result of Scenario 1 shows that daily maximum productivity which must be reached by Gunung Mas is 912,72 kg/ha to 2.500 kg/ha (in dry season) and 363,27 kg/ha to 4.266,67 kg/ha (in rainy season) in order to meet plant capacity. While the result of Scenario 2 shows that maximum width of area which must be plucked by the plantation per day is 119,31 ha to 288,34 ha (in dry season) and 64,96 ha to 222,41 ha (in rainy season) in order to meet plant capacity.
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Judul: Management of Tea Tree Plucking (Camellia sinensis (L.) O. Kuntze) at Wonosari Estate, PT Perkebunan Nusantara XII, Malang
Abstrak: Pemetikan merupakan kegiatan pemanenan pucuk dan daun teh yang dapat mempengaruhi kualitas dan kuantitas pucuk teh. Kegiatan magang dilaksanakan pada bulan Februari – Juni 2022 di PT Perkebunan Nusantara XII. Tujuan kegiatan magang adalah meningkatkan pengetahuan, keterampilan, pengalaman kerja secara teknis di lapangan dan manajerial pada perkebunan teh, serta mengetahui dan memahami pengelolaan pemetikan terhadap hasil pucuk teh dengan mutu yang baik dan produksi yang tinggi. Metode yang digunakan adalah metode langsung dan tidak langsung. Hasil pengamatan tinggi bidang petik dan lebar bidang petik menunjukkan hasil berbanding lurus dengan umur pangkas, bertambahnya umur pangkas maka tinggi bidang petik dan diameter bidang petik lebih besar. Perkembangan pucuk pada pemetikan manual lebih cepat, persentase pucuk peko menurun dengan bertambahnya umur pangkas. Hanca dan gilir petik pada pemetikan manual lebih kecil. Analisis petik pada pemetikan manual lebih baik untuk memperoleh jenis petikan medium. Analisis pucuk yang memenuhi syarat (MS) pada pemetikan manual lebih tinggi dibandingkan pemetikan mesin. Tenaga pemetik di lapang dari metode manual dan mesin masih kurang. Kapasitas pemetik pada metode pemetikan mesin lebih besar. Kapasitas pemetik dapat dipengaruhi oleh umur, lama pengalaman kerja, dan gender., Picking is an activity of harvesting tea shoots and leaves that can affect the quality and quantity of tea shoots. Internship activities are carried out in February – June 2022 at PT Perkebunan Nusantara XII. The purpose of the internship is to increase knowledge, skills, technical and managerial work experience in tea plantations, as well as to know and understand the management of picking tea shoots with good quality and high production. The method used is a direct and indirect method. The results of observations of the height of the picking field and the width of the picking field show that the results are directly proportional to the age of the pruning, increasing age of the pruning means that the height of the picking field and the diameter of the picking field are larger. Shoot development in manual picking was faster, the percentage of peko shoots decreased with increasing pruning age. Chopping and rotating picks in manual picking is smaller. Pick analysis on manual plucking is better for obtaining medium plucking types. Analysis of eligible shoots (MS) in manual picking is higher than that of machine picking. Picking power in the field from manual and machine methods is still lacking. The picking capacity of the machine picking method is greater. Picking capacity can be influenced by age, length of work experience, and gender.
Keyword: plucking tools, picking method, shoot development, labor

Judul: Infeksi Cacing Jantung Dirofilaria Immitis, Railliet & Henry, 1911 Pada Anjing
Abstrak: Cacing Dirofilaria immitis dewasa yang tinggal dalm ventrikel kanan jantung anjing, sering kali menimbulkan gejala klinis yang cukup berat. Cacing Tersebut menghasilkan mikrofilaria yang selanjutnya berkembang menjadi larva infektif dalam saluran malphigi induk semang entara, yaitu nyamuk dari genus Culex, Aedes dan Anopheles.
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