. Riyanto
Program Studi Pendidikan Guru Sekolah Dasar FKIP UNTAN, Pontianak

Published : 3 Documents
Articles

Found 3 Documents
Search

GRAZING PRESSURE OF CATTLE ON MIXED PASTURES AT COAL MINE LAND RECLAMATION Daru, T P; Hardjosoewignjo, S; Abdullah, L; Setiadi, Y; Riyanto, .
Media Peternakan Vol. 35 No. 1 (2012): Media Peternakan
Publisher : Faculty of Animal Science, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (524.169 KB) | DOI: 10.5398/medpet.2012.35.1.54

Abstract

The objective of the research was to determine the grazing pressure in mix pasture of signal grass (Brachiaria decumbens) and puero (Pueraria phaseoloides) at coal mining reclamation. The experiment was arranged by randomized block design consisted of 5 stocking rate treatments, those were 12.56, 19.63, 28.26, 38.47, and 50.24 m2.animal-1.d-1 which were equal to length of tether rope of 2.0, 2.5, 3.0, 3.5, and 4.0 m, respectively. The rotation system was applied by modifying the tether. Each rotation period was 30 d of three-rotation period. Result of this experiment showed that average daily gain (ADG) was different (P2.animal-1.d-1 and decreased linearly with increasing length of rope from 254.29 to 100.17 kg.ha-1. Maximum dry matter consumption was achieved at length of tether rope of 3.32 m or grazing area 34.61 m2.animal-1.d-1. Average dry matter yield in this experiment was 235.39 g.m-2.d-1 or 2.35 ton.ha-1.mo-1. Botanical composition of signal grass, puero, and weeds before and after grazing was change with grazing pressure.
KELIMPAHAN DAN KEANEKARAGAMAN SPESIES SERANGGA PREDATOR DAN PARASITOID Aphis gossypii DI SUMATERA SELATAN Riyanto, .; Herlinda, Siti; Irsan, Chandra; Umayah, Abu
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 11, No 1 (2011): Maret, Jurnal Hama dan Penyakit Tumbuhan Tropika
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (76.273 KB) | DOI: 10.23960/j.hptt.11157-68

Abstract

 This study was aimed to analysis abundance and species diversity of predatory insects and parasitoid of Aphis gossypii from lowland and highland areas of South Sumatra.    Survey of was conducted in 11 vegetable centers of  South Sumatra.  The results showed that 20 species of predatory insects and 3 species of parasitoids were found from the survey. The predatory insects consisted of 15 species of coccinellid beetles, two species of syrphids, and  one species of chamaemyiid, mantid and staphylinid.  Parasitoid found were 2 species of Aphidiidae (Diaretiella rapae and Aphidius sp.) and a species of Aphelinidae (Aphelinus sp.).  The highest abundance of the predator was found in Soak (42.61 larvae and adults) and the highest abundance of the parasitoid was found in Talang Buruk (25.99 adults).  The highest species diversity of the predator and the parasitoid were found in Soak (15 species and H’= 0.94) and in Talang Buruk (2 species and H’ = 0.27), respectively.  Abundance and species diversity of the predators and parasitoids were higher in the dry season than those in rainy season. Thus, the abundance and species diversity of the predators and parasiotids were higher in the lowland than highland areas in South Sumatra, while the seasons affected the abundance and species diversity of the predators and parasitoids.
ANALISIS KINERJA DAN EFISIENSI TEKNIS INDUSTRI BATIK DI KOTA PEKALONGAN SEBELUM DAN SETELAH PENERAPAN ACFTA Riyanto, .; Huraeroh, Abu
Jurnal Ekonomi & Kebijakan Publik Vol 3, No 1 (2012)
Publisher : Pusat Penelitian, Badan Keahlian DPR RI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22212/jekp.v3i1.174

Abstract

Penelitian ini bertujuan untuk (1) menganalisis kinerja dan efisiensi dari industri batik di Kota Pekalongan sebelum dan setelah pelaksanaan Asean China Free Trade Agreement (ACFTA) dan (2) menganalisis faktor yang mempengaruhi efisiensi industri batik di Kota Pekalongan. Penelitian ini menggunakan analisis statistik inferensi untuk menguji perbedaan kinerja dan efisiensi industri batik di Kota Pekalongan sebelum dan setelah pelaksanaan ACFTA. Pendekatan stochastic frontier digunakan untuk menghitung tingkat efisiensi dan analisis multiple regression digunakan untuk menganalisis faktor yang mempengaruhi efisiensi industri batik. Penelitian ini menemukan bahwa setelah pelaksanaan ACFTA, maka (1) profit margin industri batik di Kota Pekalongan turun secara signifikan, (2) efisiensi teknis industri batik di Kota Pekalongan terus melonjak tajam hingga 84 persen (sebelum pelaksanaan ACFTA) menjadi 88 persen, dan (3) faktor yang mempengaruhi efisiensi dari industri batik di Kota Pekalongan adalah paguyuban (mewakili modal sosial), pendidikan (mewakili kualitas sumber daya manusia), dan penggunaan teknologi blower.