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Studi Pemanfaatan Sampah Organik Sayuran Sawi (Brassica juncea L.) dan Limbah Rajungan (Portunus pelagicus) untuk Pembuatan Kompos Organik Cair Kusmiadi, Riwan; Prasetyono, Eva
JURNAL ENVIAGRO Vol 8, No 1 (2015): ENVIAGRO
Publisher : Universitas Bangka Belitung

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The purpose of this study is to investigate the utilization of organic waste of green mustard and crab waste as materials for producing liquid organic compost. This study was conducted in experiment station and laboratorium of Chemistry, Faculty of Agriculture, Fisheries and Biology, University of Bangka Belitung in February 2014. The design of experiment used randomized block design with formulation ratio as treatment. The treatments consist of F1 (100% green mustard organic waste), F2 (75% green mustard organic waste + 25% crab waste), F3 (50% green mustard organic waste + 50% crab waste) and F4 (25% green mustard organic waste + 75% crab waste). The results showed that green mustard organic waste and crab waste could produce quality of liquid organic compost in accordance with the Indonesian National Standard (SNI 19-7030-2004). All formulations between green mustard organic waste and crab waste, including F3 (50% green mustard organic waste + 50% crab waste) produced liquid organic waste in accordance with the Indonesian National Standard (SNI 19- 7030 2004).

Aplikasi Ekstrak Daun Merapin (Rhodamnia cinerea) untuk Menghambat Colletotrichum capsici pada Benih Cabai Diaguna, Riduan; Inonu, Ismed; Kusmiadi, Riwan
JURNAL ENVIAGRO Vol 8, No 1 (2015): ENVIAGRO
Publisher : Universitas Bangka Belitung

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R. cinerea leaf is one of leaves with anti-fungi compound that is able to inhibit the growth of C. capsici. This research is aimed to know the impact and the effectiveness as anti-fungi of R. cinerea leaf extract in inhibiting the growth of C. capsici on the chili seeds. This research was conducted at Biology Laboratory, Experimentation and Research Station of the Faculty of Agriculture, Fishery and Biology Bangka Belitung University. The experimentation was carried on Januari 2014 to April 2014. The experiment was conducted in two stages, using randomized completely design with 6 level of treatment (research I), and 4 level of treatment (research II), and 3 replication. Observation data were analysed using analysis of variance (ANOVA) with the level of significance 95%. If the result showed significantly effect, it continued to be tested with Duncanâs Multiple Range Test (DMRT) (research I), and the Least Significance Difference (LSD) (research II). The result showed that the concentration of R. cinerea extract has significantly impact in inhibiting the growth of C. capsici on the chili seeds. The most effective concentration was found on the level of concentration 35% (90,9%) with the least percentage of affected seeds.

Pengaruh Jarak Tanam dan Waktu Penyiangan terhadap Pertumbuhan dan Produksi Bawang Merah (Allium salonicum L .) pada Lahan Ultisol di Kabupaten Bangka Kusmiadi, Riwan; Ona, Cik; Saputra, E
JURNAL ENVIAGRO Vol 8, No 2 (2015): ENVIAGRO
Publisher : Universitas Bangka Belitung

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The research aimed to find the appropriate plant spacing and weeding period to onion growth and production in ultisol land. Furthermore, the objective of the research is to identify interaction between plant spacing and weeding period and its effect to onion growth and production. The experiment conducted in May 2014 â July 2014 in Experimental Field, Faculty of Agriculture, Fisheries and Biology, Bangka Belitung University. It used Factorial Completely Randomized Design with two factors and three repeated. First factor is plant spacing, consist of J1 (10 x 15 cm) and J2 (20 x 15 cm). Second factor is weeding period, consist of P0 (without weeding), P1 (weeding in 7 day after palnting), P2 (weeding in 14 day after palnting), P3 (weeding in 21 day after palnting), P4 (weeding in 28 day after palnting), P5 (weeding to harvest time). The result showed plant spacing 20 x 15 cm and weeding period until harvest time give the great result to onion growth and production. Furthermore, it showed that no interaction between plant spacing and weeding period.

Penambahan Gedebong Pisang pada Kompos Bulu Ayam dengan Berbagai Jenis Aktivator Kusmiadi, Riwan; Khodijah, Nyayu Siti; Royalaitani, .
JURNAL ENVIAGRO Vol 8, No 1 (2015): ENVIAGRO
Publisher : Universitas Bangka Belitung

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Agricultural activities always produce solid waste which originated from residues of livestock and crop. Chicken feathers and banana trunk are waste that have potential to be utilized as compost material. It is due to chicken feathers contains high protein so that it can be used as a source of nitrogen. Meanwhile, banana trunk contains high potassium. Decomposition of compost material needs a lot of time. However, composting can be conducted faster by using microorganisms. The purpose of this study is to determine the effect of banana trunk and the effectivity of local microorganism in the decomposition of compost material. This study uses randomized block design factorial with six treatments. First factor is banana trunk (0.5 and 1 kg). The second factor is activator types (EM4, MOL tapai and MOL papaya).The variables were temperature, water content, color, pH, N-total, C-organic, ratio C/N, phospor, and potassium. The result showed that banana trunk was statistically significant to water content, ratio C/N and potassium. Furthermore, the activators did not affect physical and chemical properties of compost.Â

Uji Efikasi Ekstrak Daun Mengkudu, Kemangi dan Jambu Biji dalam Menghambat Pertumbuhan Cendawan Colletotrichum gloeosporioides pada Buah Pepaya Susanti, Sari; Kusmiadi, Riwan; Aini, Sitti Nurul
AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian Vol 1 No 1 (2017): AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian
Publisher : Universitas Bangka Belitung

Anthracnose disease is a crucial problem in the cultivation of papaya. It is caused by C.gloesporioides. one way to overcome this problem was by using natural fungicides. Some of the natural substances that have natural fungicides as their property are noni, basil, and guava. The research was conducted at the Microbiology laboratory of the Faculty of Agriculture, Fisheries, and Biology of Universitas Bangka Belitung January to April 2016. The research utilizes Randomized Analysis Complete Design with Factorial structure. The first factor are the extracts (E), consists of noni leaves (E1), basil leaves (E2), and guava leaves (E3). The second factor are the concentrations of the extract, consists of 0% (K0), 10% (k1), 20% (K2), 30% (K3), 40% (K4), 50%(K5), and 60% (K6). The data was analysed using analysis of variance at Î± 5%, with the used of SAS Program (Statistical Analytic System), if the effect was found significant, the data was further analysed using DMRT (Duncan Multiple Range Test). The research result showed that the extract of guava leaves at 30% concentration provided the best result in inhibiting the growth of C.gloesporioides in papaya.

Uji Analisis Tingkat Kematangan dan Metode Perendaman terhadap Aspek Fisik dan Kimia Lada Putih (Muntok White Pepper) Kusmiadi, Riwan; Aini, Sitti Nurul; Nurkholis, Nurkholis
AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian Vol 1 No 1 (2017): AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian
Publisher : Universitas Bangka Belitung

One of the problems an industrial pepper in Indonesia is the lower quality of production by the farmers. To overcome these problems we must have to do research to get a good technique in pepper processing and the good quality of pepper in accordance Indonesian National Standard. This research using a factorial randomized block design with three replications of two treatment factors. The first factor is physiologic mature (M) and the second factor is the soaking method (P). The research phase includes the preparation of tools and materials. Soaking pepper, cleaning the skin and stems, drying and analysis of pepper quality test. Changes observed in this research is the content of water, the level of colored pepper, and the levels of mold contamination. The result of this research shown the mature physiologically significant effect on the levels of pepper blackish in color and content of seeds lightly. Pepper levels blackish color shown on the highest passing phase that is optimum ripe 0.12% and the lower passing phase optimum ripe is 0.01%. The highest levels of seed lightly on shown at the mature phase towards optimum ripe 1.66% and the lower it show through the mature phase that is 0.71%. White pepper research results both in treatment and in the treatment of physiologically mature immersion method meet the Indonesian National Standard.

Uji Efektifitas Agensia Hayati Metarizhium anisopliae Terhadap Hama Ulat Grayak (Spodoptera litura F) Secara In Vitro Kusmiadi, Riwan; Aini, Sitti Nurul; Apriyadi, Rion; Ciko, Ciko
AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian Vol 1 No 2 (2017): AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian
Publisher : Universitas Bangka Belitung

Pests are one the reason of declined in crop production. one of them is Spodoptera litura. The purpose of this research was to determined the mortality rate of Spodoptera litura caused by M. anisopliae infection. The research is conducted at the Microbiology Laboratory of Agricultural Technology Department of the Faculty of Agriculture, Fishery, and Biology of Universitas Bangka Belitung. The research used factorial randomized block design with 2 treatment factors. The first factor ( stage larvae) consists of L1=instar 3, L2=instar 4. The second factor (the concentration) consists of V0=control, V1= 30 g/l of water, V2=35 g/l of water, V3= 40 g/l of water, V4= 45 g/l of water. The data is analyzed using ANOVA with confidence level of 95% and is further tested using the Tukey Test with the confidence level of 95%. The research results show that a concentration of 30 g/l of water and 35 g/l of water the mortality rate reaches 88,89%, while at the concentration of 40 g/l of water and 45 g/l of water the mortality rate reaches 100% with 3 to 7 days span of mortality. The larvae infected with M. anisopliae experience behavioral changes such as decreased appetite, less active movement, inactive, and transformed color to black with mycelium covering a part of the body.

Peningkatan Kualitas Lada Putih dengan Kombinasi Lama Perendaman dan Penambahan Daun Karamunting (Melastoma malabathricum) Putri, Yasa; Kusmiadi, Riwan; Aini, Sitti Nurul
AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian Vol 2 No 2 (2018): AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian
Publisher : Universitas Bangka Belitung

Pepper submersion period with addition karamunting leaf (Melastoma malabathricum) is one expected postharvest to increasing white pepper quality. This research aims to know the influence of submersion period and karamunting leaf dose and also it is interaction to white pepper quality. This research was conducted at Balunijuk village, Bangka Regency and quality testing in UPTD Hall, Certification And Quality Control, Departement of Industry and Commerce Bangka Belitung Island. This research used Randomized Completely Design with 2 factors and F-test. The first factor (P) submersion period: (P0) as control 14 days, (P1) 9 days, (P2) 7 days and (P3) 5 days and two factor add karamunting leaf doses (K): (K0) as control without add karamunting leaf dose 0 g, (K1) 1 00 g, (K2) 150 g, and (K3) 200 g. Each unit of and using 2 kg of fruit pepper. Further testing used Duncan Multiple Range Test with 95% level of confidence. The result showed submersion periods have the significant effect for foreign object, white pepper level, and atsiri oil content. 5 days submersion had the best yield on atsiri oil content (2.44%). There is no interaction between submersion periods by adding karamunting leaf to the quality of white pepper.

Karakterisasi Plasma Nutfah Kacang Tanah (Arachis hypogaea L.) Lokal Asal Bangka Berdasarkan Karakter Morfologi Kusmiadi, Riwan; Prayoga, Gigih Ibnu; Apendi, Fitra; Alfiansyah, Alfiansyah
AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian Vol 2 No 2 (2018): AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian
Publisher : Universitas Bangka Belitung

Produksi kacang tanah dapat ditingkatkan melalui penggunaan benih unggul yang berasal dari plasma nutfah lokal. Penelitian ini bertujuan untuk mengetahui karakteristik morfologi aksesi kacang tanah lokal Bangka serta hubungan kekerabatan antara berbagai aksesi kacang tanah lokal Bangka. Penelitian ini dilaksanakan di Kebun Percobaan dan Penelitian, Universitas Bangka Belitung dari bulan Maret sampai Agustus 2017. Penelitian ini menggunakan RAK dengan perlakuan sembilan aksesi lokal dan satu varietas unggul nasional. Sembilan aksesi tersebut adalah aksesi Bedeng Akeh, Lubuk kelik, Matras, Sungailiat, Arung Dalam, Belimbing, Jongkong, Air Ketimbai 1, dan air Ketimbai 2. Varietas unggul nasional adalah varietas Kancil. Analisis hubungan kekerabatan dilakukan dengan UPGMA. Hasil karakterisasi morfologi menunjukan memiliki kesamaan dalam karakter yaitu bentuk tanaman, tipe percabangan, warna batang, warna daun, warna bunga, bentuk paruh, dan variasi warna biji. Adapun perbedaan yaitu bentuk daun, bentuk pinggang, jaringan kulit, dan warna biji. Hasil analisis kekerabatan karakterisasi morfologi menunjukan 4 grup pada kemiripan 87%. Grup pertama yaitu aksesi Belimbing, Jongkong, Air Ketimbai 2, Sungailiat, dan varietas Kancil. Grup kedua yaitu aksesi Matras, Lubuk Kelik, dan Bedeng Akeh. Grup ketiga aksesi Air Ketimbai 1 dan grup keempat aksesi Arung Dalam.

Respon Pertumbuhan Tanaman Pakcoy (Brassica rapa L) dengan Pemberian Teh Kompos Bulu Ayam pada Sistem Hidroponik Rianti, Alfi; Kusmiadi, Riwan; Apriyadi, Rion
AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian Vol 3 No 2 (2019): AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian
Publisher : Universitas Bangka Belitung

Wick system is one of hydroponics system that uses wick asnutrient absorbing media. Chicken feather liquid compost can be used as a substitute for conventional nutrition in pakcoy plant cultivation using hydroponics. This study aims to determine the effect of chicken feather liquid compost and determine the best concentration chicken feather liquid compost on the growth of pakcoy, and to find out the potential of chicken feather liquid compost to replace conventional nutrient solutions in a hydroponic system. This study used completely randomized design (CRD), there were 6 level of treatments which were chicken feather liquid compost concentrations consisting of E0 (1000 ppm Ab-mix), E1 (900 ppm liquid compost ), E2 (800 ppm liquid compost), E3 (700 ppm of liquid compost), E4 (600 ppm of liquid compost), E5 (500 ppm of liquid compost) with 3 replications. The variables observed were plant height, leaf number, leaf color, wet weight and dry weight of plants. The results showed that the nutritional treatment of chicken feather liquid compost had a very significant effect compared to AB-mix, which showed that Ab-mix was superior to the observed variables,ncluding plant height, the number of leaves, leaf colour, wet weight and dry weight of plants. At the first and second week, pakcoy growth was still relatively similar to Ab-mix application. All treatments using compost chicken feather liquid compost could not replace AB-mix nutrient.

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