Judul: Hubungan perilaku komunikasi dan tingkat pemahaman informasi anggota kelompok tani tentang paket teknologi suprainsus di WKBPP Sanden, Kabupaten Bantul D.I. Yogyakarta
Abstrak: Upaya untuk memasyarakatkan paket teknologi Supra Insus memerlukan strategi komunikasi yang tepat. Tiga hal penting yang harus dipertimbangkan dalam menyusun strategi komunikasi itu, antara lain, karakteristik demografik petani, perilaku komunikasi petani, dan pemahaman informasi petani tentang paket teknologi Supra Insus. ...
Keyword: Intensive cultivation, perilaku komunikasi

Judul: Identifikasi faktor-faktor yang berpengaruh dalam penyerapan teknologi produksi supra insus melalui insus paket D : studi kasus di luar wilayah Program Supra Insus, WKPP Parakansalak, BPP Kalapanunggal, Kabupaten Sukabumi
Abstrak: Penelitian ini bertujuan untuk mempelajari keterkait- an antara tingkat penyerapan teknologi Supra Insus dengan karakteristik sosial ekonomi petani, keragaan usahatani- nya, tingkat keterlibatan petani terhadap lembaga-lembaga pendukung yang terdapat di lingkungan usahataninya serta tingkat keterdedahan petani terhadap media massa (media exposure). Tujuan lain adalah mempelajari konsep rekayasa Supra Insus yang terwujud melalui 3 fungsi ganda yaitu fungsi kondisi mutlak, fungsi legitimasi dan fungsi fasi- litasi. Pada akhirnya, akan diketahui variabel-variabel yang mempengaruhi tingkat adopsi petani terhadap teknologi produksi Supra Insus oleh petani di luar wilayah penerap- annya. Pemilihan lokasi penelitian dilakukan secara sengaja (purposive) dengan pertimbangan bahwa WKPP Parakansalak merupakan wilayah di luar program Supra Insus yang turut menerapkan Insus Paket D. Penelitian ini merupakan studi kasus dengan menggunakan metoda survai. Sampel dan res- ponden ditentukan dengan cara Pengambilan Sampel Distrati- fikasi (Stratified Random Sampling) yang terdiri dari 44...
Keyword: Teknologi produksi Supra Insus, BPP Kalapanunggal, Sosial ekonomi petani, Konsep usahatani

Judul: Mercury Toxicity and It’s Effect on Histopathology Change of Nile Tilapia (Oreochromis niloticus).
Abstrak: Nile tilapia (Oreochromis niloticus) is one of fish species that oportunity to contaminated with mercury. The effects of pollutants can damage living organisms organs and can cause death. The effects caused mercury had acute or chronic character. The aims of this study are to determine threshold and acute toxicity of mercury chloride (HgCl2) of Nile tilapia (Oreochromis niloticus), to assess the effect of mercury chloride (HgCl2) on several biometric parameters (survival, growth rate of average daily weighted, liver condition, bile and reproductive variability of Nile tilapia (Oreochromis niloticus), assess the level of damage to the histological structure of the gills, liver and kidney of Nile tilapia (Oreochromis niloticus) caused mercury chloride (HgCl2) exposure. This study was conducted from February to June 2013. Nile Tilapia (Oreochromis niloticus) were used in this study were female with average weight 20 grams or 11-13 cm length range. Toxicant materials used in this study was mercury chloride (HgCl2). Fish were reared in each aquarium 60x40x30 containing 48 liters of water. This study consists of three stages: a preliminary test, acute test, and sub-chronic test. To determine the changes in biometric condition of tilapia approximated by measuring the survival rate (SR), the growth rate of average daily weight , the content of mercury in the fish organs, hepatosomatic index (HSI), the relative bile volume (VER), gonadal soamtic index (IKG), fecundity and oocit diameter, tissue damage caused by mercury in fish organs by making histological preparations stained with hematoxylin and eosin. The median lethal concentration (96 hr, LC50) of Mercury Chloride was calculated as 1,64 mgL--1.The survival rate was highest in the control treatment (46,67 %) . Mercury chloride with concentration 0.196 mgL--1 show significant effect to changes HSI and relative bile volume, and oocyte diameter of Nile tilapia (p < 0,05). Mercury chloride with a concentration of 0,164 mgL-1 and 0,196 mgL-1 have not a significant effect on the growth rate of weight, gonadal somatic index and fecundity of Nile tilapia (p > 0,05). Mercury chloride cause damage to gills (hyperplasia, hypertrophy, proliferation and neukrosis), liver (hyperplasia, hemorhage, shrinkage of hepatocytes, proliferation and neukrosis) and kidney (hyperplasia, hemorrhage, shrinkage of the glomerulus, proliferation and neukrosis).
Keyword: Nile tilapia, Hepatosomatic indexs (HSI), histopathology