Judul: Metode Penyemprotan Berbeda pada Media Pakan Larva Ulat Tepung (Tenebrio molitor L.) Umur 10 Sampai 25 Hari.
Abstrak: Ulat tepung adalah larva dari kumbang Tenebrio molitor L. Penelitian ini bertujuan untuk mengevaluasi laju pertumbuhan ulat tepung (Tenebrio molitor L.) umur 10-25 hari dengan penyemprotan air dan vitamin yang berbeda. Penelitian ini menggunakan ulat tepung sebanyak 2 700 ekor dan menggunakan pakan brand pollard serta perlakuan yang diberikan menggunakan vitamin komersial ayam dari PT. Medion. Rancangan percobaan menggunakan Rancangan Acak Lengkap (RAL) Faktorial 3x3 dengan 2 perlakuan dan 3 ulangan. Data kemudian dianalisis ragam dan dilanjutkan uji banding berganda Tukey. Suhu pada lokasi penelitian berkisar antara suhu 26.1-27.9 °C tergolong normal untuk perkembangan ulat tepung. Konsumsi BK menunjukkan perbedaan nyata (P<0.05), perlakuan (A2B1) dan (A2B2) paling tinggi (0.0047 g ekor-1hari-1) dan (0.0046 g ekor-1hari-1). Pertambahan panjang badan nyata (P<0.05) dipengaruhi kadar vitamin dan interaksi kedua faktor. Interaksi antara kedua faktor menunjukkan (A3B2) paling tinggi (0.0047 mm ekor-1 hari-1). Pertambahan bobot badan nyata (P<0.05), interaksi perlakuan (A2B1) PBBH paling tinggi (0.0016 g ekor-1 hari-1. Mortalitas berkisar paling kecil pada perlakuan (A1B2) sebesar (1.01%). Perlakuan penyemprotan 2 kali sehari dengan kadar vitamin 0.5 g dapat meningkatkan performa ulat tepung.
Keyword: brand pollard, penyemprotan, ulat tepung, vitamin

Judul: Performa ulat tepung (Tenebrio molitor L.) pada suhu dan kelembaban yang berbeda
Abstrak: Yellow mealworm is the larval stage of Tenebrio molitor L. beetle. Nowadays, yellow mealworms are reared because of its economic value. Yellow mealworm can be used for feed and food. The growth of yellow mealworms is influenced by temperature and humidity, so a suitable combination of temperature and humidity is necessary for yellow mealworm optimal production.The research was done from July 1 5u~p t o Oktober lo* 2005 at Non Ruminants and Prospective Animals Division, Departement of Animal Production and Technology, Faculty of Animal Science, Bogor Agricultural University. The purpose of this research was to compare the yellow mealworms (Tenebrio molitor L.) growth performances at different temperature and humidity. This research used 1500 yellow mealworms aged 35 days old. The experiment used Completely Randomized Design in 2x2 factorial experiment. The first factor was temperature (29 and 31 OC) and the second factor was humidity (69% and 71%). Each treatment combination had five replicates which consisted 75 yellow mealworms. The observed variables were feed consumption, body lenght and weight gain, feed conversion based on body lenght and weight gain, and mortality. Data were analyzed by using ANOVA and tested with Least Significant Difference Test (SAS 6.12) to know the difference among the treatments. The result showed that the lower temperature (29 OC) with higher humidity (71%) gave the best growth performances for 35-65 days old yellow mealworms. Otherwise, the best growth performances for 65-75 days old yellow mealworms were at higher temperature (3 1 OC) with lower humidity (69%). Keywords : growth performance, Tenebrio molitor L., temperature, humidity
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Judul: Mapping of Coastline Changes in the Coastal of Bantul Regency Using Sentinel-2A Satellite Imagery
Abstrak: Pesisir merupakan wilayah yang kompleks akibat interaksi darat dan laut sehingga mudah mengalami perubahan secara fisik seperti perubahan garis pantai. Perubahan garis pantai penting diketahui untuk kajian pengelolaan kawasan pesisir, pemodelan pesisir, studi akresi-abrasi, serta analisis wilayah bahaya. Penelitian bertujuan memetakan dan menghitung laju perubahan garis pantai di Kabupaten Bantul, Daerah Istimewa Yogyakarta menggunakan citra Sentinel-2A pada tahun 2017, 2018 dan 2021. Metode digital shoreline analysis system (DSAS) digunakan untuk menghitung perubahan garis pantai secara statistik maupun geospasial. Lokasi penelitian terbagi menjadi 15 sub-zona dimana abrasi tertinggi terjadi pada Desa Parangtritis bagian timur (Sub-zona E3) dengan laju perubahan garis pantai mencapai -10,03 m/tahun. Abrasi dipengaruhi landainya kondisi pantai, gelombang dengan tinggi mencapai 2,39 m dan arus dengan kecepatan mencapai 0,24 m/s yang menggerus garis pantai serta tidak adanya penghalang di kawasan pantai. Akresi tertinggi terjadi di Desa Parangtritis bagian barat (Sub-zona E1) dengan laju perubahan garis pantai mencapai 9,20 m/tahun. Akresi dipengaruhi material sedimen dari darat yang mengendap dan menambah area garis pantai serta bergeraknya pasir oleh angin di sekitar gumuk pasir., Coastal is a complex area due to land and sea interactions so that it is easy to experience physical changes such as changes in coastlines. Coastline changes are important to know for coastal area management studies, coastal modeling, accretion-abrasion studies, and hazard area analysis. The study aimed to map and calculate the rate of change in coastlines in Bantul Regency, Yogyakarta Special Region using Sentinel-2A imagery on 2017, 2018 and 2021. The digital shoreline analysis system (DSAS) method used to calculate shoreline changes statistically and geospatially. The research location divided into 15 sub-zones where the highest abrasion occured in east Parangtritis Village (E3 sub-zone) with a coastline change rate of -10,03 m/year. Abrasion influenced by gentle coastal conditions, waves with a height of 2.39 m and currents with a speed of 0.24 m/s which erodes the coastline and there is no barrier in the coastal area. The highest accretion occurred in west Parangtritis Village (E1 sub-zone) with a coastline change 9,20 m/year. Accretion influenced by sedimentary material from land that settled and added to the coastline area and the movement of sand by the wind around the sand dune.
Keyword: abrasi, akresi, DSAS, Kabupaten Bantul, abrasion, accretion, Bantul Regency