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Iskandar Johan
Universitas Islam Riau
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Economics, Econometrics & Finance Immunology & microbiology

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PENGARUH PENCAMPURAN KOTORAN TERNAK SEBAGAI MEDIA KULTUR TERHADAP PERTAMBAHAN POPULASI CACING TANAH (Lumbricus rubellus) Satria Edi Putra; Iskandar Johan; Muhammad Hasby
DINAMIKA PERTANIAN Vol. 34 No. 1 (2018): Jurnal Dinamika Pertanian Edisi April 2018
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/dp.2018.vol34(1).4086

Abstract

This research aims to determine the effect of mixing cattle dung as a culture medium to the growing population of earthworms. The research was conducted for 42 days starting from 18 October to 28 November 2017 at the fish farming school hall of Agriculture Faculty of Islamic University Riau Pekanbaru. The worm tree used in this study was as many as 960 tail or 80 tail for each container. Worms are maintained for 42 days with different mixtures of medium, i,e, 100% P1 dung treatment, P2 cow-dung treatment 50% + 50% buffalo dung, 50% cow dung + 50% goat dung, 50% cow dung + 50% chicken droppings. The research design was Completely Randomized Design with 4 treatments and 3 replications. The result of this research showed that the increase of population of earthworm with the mixing of cattle dung as culture media which conducted for 42 days is the best treatment of P2 as much as 4266 head/container, then the second one used was in treatment 3 as much as 1855 head/container, and the lowest increase of the population was at treatment P1 as much as 403 head/container, and followed by treatment P4 as much as 575 head/ container.
PENGARUH PENGGUNAAN AIR KELAPA HYBRIDA (Cocos nucifera) DENGAN DOSIS YANG BERBEDA TERHADAP MASKULINISASI LARVA IKAN GUPPY (Poecilia reticulata) Irvandu Putra Perdana; Iskandar Johan; Muhammad Hasby
DINAMIKA PERTANIAN Vol. 38 No. 3 (2022): Jurnal Dinamika Pertanian Edisi Desember 2022
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/dp.2022.vol38(3).11915

Abstract

The purpose of this study is to determine the effectiveness of using young coconut water as an alternative material for masculinizing guppy fish through different immersion times on guppy fish larvae. This research was carried out for 50 days starting from October 25 to December 14, 2020, at the Fish Seed Center (BBI) of the Islamic University of Riau Pekanbaru. The method in this study used a completely randomized design (CRD) method with five treatments and three replications. The treatments used were soaking time of 8 hours with doses using hybrid coconut water, namely: P0: without using coconut water, P1: 50 ml, P2: 100 ml, P3: 150 ml, and P4: 200 ml. The experimental treatments were carried out on guppy fish (Poecilia reticulata) larvae. The containers used were 15 units of jars with a capacity of 10 liters which was filled with treatment media with a stocking density of 15 fish/jar. Based on the results, it was found that the highest male sex direction in guppies was in treatment P4 with a dose of 200 ml with a soaking time of 8 hours with the number of males produced at 94% and the lowest was in treatment P0 without using a dose of young coconut water which was only produced 37% males with a very low survival rate. Analysis of variance showed that F count (2.59) < F table 0.05 (3.48) at the 95% accuracy level, where different doses of masculinization of guppies (Poecilia reticulata) were not significantly different. Climatic data in the form of temperature was 28-32 0C, pH 5-7 and DO 5,7-8,20 mg/l.
Co-Authors Irvandu Putra Perdana Muhammad Hasby Satria Edi Putra