Peningkatan Produksi Ikan Nila Melalui Teknik Budidaya Menggunakan Pakan Alami

Pengelolaan perikanan tawar di kabupaten Pangkep belum dilakukan secara optimal. Usaha budidaya ikan tawar masih dalam skala rumah tangga, bahkan sebagian rumah tangga hanya menjadikannya sebagai USAha sampingan untuk menambah pendapatan. Permasalahan yang dihadapi oleh Kelompok mitra (kelompok Alau Lempong dan kelompok Pasar lama) adalah 1) permasalahan dalam aspek produksi dan 2) aspek manajemen USAha. Permasalahan aspek produksi menghasilkan produksi budidaya ikan nila rendah dan secara linier berpengaruh terhadap harga jual. Sedangkan penerapan manajemen USAha yang kurang baik akan menghambat sistem produksi dan mengurangi keuntungan kelompok tani ikan. Tujuan dari program Ibm kelompok budidaya ikan nila di Kabupaten Pangkep adalah memberikan penyuluhan dan pendampingan kepada kelompok mitra untuk meningkatkan produksi dan meningkatkan kesejahteraan anggota kelompok. Metode pendekatan yang digunakan dalam menyelesaikan permasalahan prioritas mitra yang telah disepakati bersama dalam kurun waktu realisasi program IbM adalah menerapkan sistem latihan serta menggunakan metode penyuluhan dan pendampingan. Dua kelompok mitra yang terpilih yaitu Kelompok Pasar Lama dan Kelompok Alau Lempong. Penentuan kelompok berdasarkan purposive sampling dengan alasan bahwa kedua kelompok tersebut memiliki produk dan potensi pasar yang baik

On Extremal Distributions and Sharp L[sub]p-Bounds For Sums of Multilinear Forms.

In this paper we present a study of the problem of approximating the expectations of functions of statistics in independent and dependent random variables in terms of the expectations of functions of the component random variables. We present results providing sharp analogues of the Burkholder--Rosenthal inequalities and related estimates for the expectations of functions of sums of dependent nonnegative r.v.'s and conditionally symmetric martingale differences with bounded conditional moments as well as for sums of multilinear forms. Among others, we obtain the following sharp inequalities: $E(\sum_{k=1}^n X_k)^t\le 2 \max (\sum_{k=1}^n EX_k^t, (\sum_{k=1}^n a_k)^t)$ for all nonnegative r.v.'s $X_1, \ldots, X_n$ with $E(X_k\mid X_1, \ldots, X_{k-1})\le a_k$, $EX_k^t<\infty$, $k=1, \ldots, n$, 1#x003C;t#x003C;2; $E(\sum_{k=1}^n X_k)^t\le E\theta^t(1) \max (\sum_{k=1}^n b_k, (\sum_{k=1}^n a_k^s)^{t/s})$ for all nonnegative r.v.'s $X_1, \ldots, X_n$ with $E(X_k^s\mid X_1, \ldots, X_{k-1})\le a_k^s$, $E(X_k^t\mid X_1, \ldots, X_{k-1})\le b_k$, $k=1, \ldots, n$, 1#x003C;t#x003C;2, 0#x003C;s\le t-1 or $t\ge 2$, 0#x003C;s\le 1, where $\theta(1)$ is a Poisson random variable with parameter 1. As applications, new decoupling inequalities for sums of multilinear forms are presented and sharp Khintchine--Marcinkiewicz--Zygmund inequalities for generalized moving averages are obtained. The results can also be used in the study of a wide class of nonlinear statistics connected to problems of long-range dependence and in an econometric setup, in particular, in stabilization policy problems and in the study of properties of moving average and autocorrelation processes. The results are based on the iteration of a series of key lemmas that capture the essential extremal properties of the moments of the statistics involved.Economic

Penaksir Rasio Regresi Linear Yang Efisien Untuk Rata-rata Populasi Pada Sampling Acak Sederhana

In this article we study three linear regression ratio estimators for the population mean on simple random. This study is a review of the article of Singh, et. al [Statistics in Transition-new series, 10: 85-100]. Each estimator is a biased estimator and their mean square errors are determined. Estimator with the smallest mean square error is the most efficient one. An example is given at the end of the discussion

Pemberian Beberapa Konsentrasi Ekstrak Brotowali (Tinospoacrispal.) untuk Mengendalikan Keong Mas (Pomaceasp.) pada Tanaman Padi (Oryzasatival.)

Rice is an important crop in Indonesia, because it contains carbohydrates, protein, fat, fiber, vitamins, and trace elements. Pomacea sp. is a major pest of rice crops in Indonesia. Use of plant molluscicides like Tinospora crispa L. is an alternative to reduce the use of synthetic chemical pesticides. This study aimed to obtain the concentration of Tinospora crispa L. capable of controlling the Pomacea sp. in riceplant. This research was conducted at plant pest laboratory, Faculty of Agriculture, University of Riau and in the experiments farm of the Faculty of Agriculture University of Riau.This research using a completely randomized design (CRD), which consist of 5 treatments and 4 replications. There are extracts Tinospora crispa L. 0 g/l of water, 25 g/l of water, 50 g/l of water, 75 g/l of water, 95 g/l of water. Concentration of Tinospora crispa L. 75 g/l of water is able to control Pomacea sp. The result indicated that concentration of 75 g/l of water can cause initial time of death is 12 hours after application, LT50reach in 28.25 hours and total mortality 86,99%