Municipal solid waste and agricultural waste have different ratio C/N and nutrients contents. They can be used as compost row materials. The purpose of the research was to get an optimum combination of both wastes to improve compost quality, to meet the Indonesian National Standard 19-7030-2004. Composting process use pots. The treatments were twelve combination of municipal solid waste (garbage market, household waste, restaurant waste) and agricultural waste (rice straw, empty fruit bunches of oil palm, cassava peel, banana skin) with a ratio of 1:1 and enriche by chicken manure, cow manure, wood ash and cellulolytic microorganisme. The treatment were replicated three times. The results showd that the nutrients content of compost were 0.77 to 1.19% nitrogen, 0.23 to 0.30% phosphorus, 0.46 to 0.69% potassium and 15.48 to 34.69% organic matter. The combination of agricultural waste and municipal solid waste affected the quality of compost. Compost that meets SNI 19-7030-2004 is a combination of rice straw+market waste that contains 1.12% nitrogen, 0.28% phosphorus, 0.63% potassium, ratio C/N 19.50, pH 7.42, and organic matters 37.65%. [How to Cite: Hapsoh, Gusmawartati, and M Yusuf. 2015. Effect Various Combination of Organic Waste on Compost Quality. J Trop Soils 19: 59-65. Doi: 10.5400/jts.2015.20.1.59][Permalink/DOI: www.dx.doi.org/10.5400/jts.2015.20.1.59]
The aim of the research was to find out potential strainsof cellulolytic bacteria isolated from two tropical peat soils and to studythe potency of the isolated bacteria to decompose oil palm empty fruit bunch (EFB). The research was carried out in two stages: (1) isolation of cellulolytic bacteria from peat soils and (2) testing the potency of isolated bacteria to decompose oil palm EFB. The cellulolytic bacteria were isolated from two peat soils, i.e. a natural peat soil (forest) and a cultivated peat soil (has been used as agriculture land). Isolation of cellulolytic bacteria was conducted by preparing a series dilution of culture solutions using a streak plate method in a carboxymethyl cellulose(CMC) selective medium.Isolates that were able to form clear zones surrounding their bacterial colony were further tested to study the potency of the isolates to decompose cellulose in oil palm EFB. The cellulolytic activity of the selected isolates were further determined via production of reducing sugars in an oil palm EFB liquid medium using Nelson-Somogyi method. The results showed that there are six isolates of cellulolytic bacteria that have been identified in two tropical peat soils used in the current study. Two isolates are identified in a natural peat soil (forest) and four isolates are identified in a cultivated peat soil. The isolates collected are identified as Bacillus sp., Pseudomonassp. and Staphylococcus sp. Among the isolates, an isolate of GS II-1 produces the highest concentration of reducing sugars, namely 0.1012 unitmL-1or 101 ppm, indicating that the isolate of GS II-1 is highly potential to decompose oil palm EFB. Therefore, the isolate of GS II-1 can be used as a decomposer in the bio-conversion processes of oil palm EFB.Keywords: isolation, bacteria, cellulolytic, oil palm empty fruit bunch (EFB), peat soil
<strong><em>ABSTRACT</em></strong><p><em>The aim of the research was to determine growth and yield of chili (<span style="text-decoration: underline;">Capsicum</span> <span style="text-decoration: underline;">annuum</span> L.) as a result of application of compost and inorganic fertilizer. The research was conducted in experimental field at Jl. Melati Panam and soil laboratory Faculty of Agriculture, Riau University on Bina Widya Campus Km 12.5 Simpang Baru sub-district, Tampan district, Pekanbaru, from September 2015 to March 2016. Research used Completely Randomized Design (CRD) factorial consisting of two factors. The first factor was compost (K) : without compost, compost TKS (oil palm fruit branch + restaurant trash) and JRM (rice straw + market trash) 25 g polybag<sup>-1</sup> and the second factor was NPK dose (0, 12.5 and 25) g plant<sup>-1</sup>.The variables observed were plant height, stem diameter, days to flowering, harvest date , length and weight of fruit per plant. Data obtained from the research were analyzed by analysis of variance followed by Duncan Multiple Range Test at 5%. The results of application of compost with NPK did not show significant effect on plant height, length and weight of the fruit crop, but gave significant effect on stem diameter, harvest and flowering date.</em></p><p><em>Keywords: dose, NPK, plant growth, yield</em></p><p align="center"><strong> </strong></p><p align="center"><strong>ABSTRAK <br /></strong></p><p>Penelitian ini bertujuan untuk mengetahui pertumbuhan dan hasil tanaman cabai (<em>Capsicum annuum</em> L.) terhadap aplikasi pupuk kompos dan pupuk anorganik. Penelitian dilaksanakan di Kebun Percobaan Jl. Melati Panam dan Laboratorium Tanah Fakultas Pertanian Universitas Riau Kampus Bina Widya Km 12.5 Kelurahan Simpang Baru, Kecamatan Tampan, Pekanbaru, sejak bulan September 2015 sampai Maret 2016. Penelitian dilaksanakan dengan Rancangan Acak Lengkap (RAL) yang disusun secara faktorial dan terdiri atas 2 faktor. Faktor pertama ialah percobaan pemberian pupuk kompos (K), terdiri dari tanpa pupuk kompos, pupuk kompos TKS (tandan kosong kelapa sawit + sampah restoran) dan JRM (jerami padi + sampah pasar) masing-masing 25 g polibag<sup>-1</sup> dan faktor kedua dosis pupuk NPK (A) terdiri atas (0, 12.5 dan 25) g tanaman<sup>-1</sup>. Variabel yang diamati yaitu tinggi tanaman, diameter batang, umur berbunga, umur panen, panjang buah dan bobot buah per tanaman. Data yang diperoleh dari pengamatan dianalisis secara statistik dengan menggunakan sidik ragam dan dilanjutkan dengan <em>Duncan Multiple Range Test</em> pada taraf 5%. Hasil penelitian menunjukkan aplikasi pupuk kompos dan penambahan NPK tidak berbeda nyata terhadap variabel tinggi tanaman, panjang buah dan berat buah tanaman<sup>-1</sup>, namun berbeda nyata terhadap variabel diameter batang, umur panen dan umur berbunga tanaman cabai.</p><p>Kata kunci: dosis, hasil, NPK, pertumbuhan tanaman.</p>
Tandan kosong kelapa sawit (TKKS) merupakan limbah padat terbesar yang dihasilkan oleh pabrik kelapa sawit (PKS). Setiap pengolahan 1 ton tandan buah segar (TBS) menghasilkan 22-23% TKKS setara dengan 220-230 kg TKKS. Alternatif pengolahan TKKS yang relatif murah dan mudah adalah diolah menjadi kompos, pengomposan berlangsung selama ± 4-6 bulan karena mengandung selulosa 33,019%, hemiselulosa 22,052%, lignin 35,076%. Pengomposan dapat dipercepat dengan cara penambahan aktivator dari isolat koleksi. Penelitian ini menggunakan metode narrative review berupa pengumpulkan data dari berbagai sumber literatur baik jurnal ataupun buku-buku yang dapat dilakukan melalui penelusuran internet. Metode pengomposan menggunakan bakteri selulolitik pernah dilakukan dengan beberapa tahap. Pertama persiapan tempat pengomposan dilakukan di dalam pot dengan menggunakan tutup pot yang terbuat dari plastik terpal berwarna hitam. Kedua, peremajaan isolat bakteri selulolitik. Ketiga pengumpulan bahan baku pengomposan berupa TKKS. Parameter kimia yang dianalisis seperti pengamatan kandungan unsur hara makro (N, P, K) kompos dilakukan pada setiap 2 minggu hingga minggu ke-8. Unsur hara Nitrogen (N) dianalisis dengan metode Kjeldahl, Fospor (P) dan Kalium (K) dianalisis dengan metode Bray I. Hasil yang dapat disimpulkan dari studi literatur ini adalah pengamatan suhu terbaik untuk kompos adalah suhu tanah yang mencapai 30ºC dan sesuai dengan Standar Kualitas Kompos SNI: 19-7030-2004. Penyusutan berat bahan kompos terbaik menghasilkan 80,8-88,4%. Pada kandungan hara N, P dan K menghasilkan nilai terbaik secara berturut-turut yaitu 2,07%, 1,82% dan 6,59%. Hasil kajian kandungan bahan organik menghasilkan nilai terbaik 59,81%. Pengamatan penunjang berupa warna dan bau, kompos yang matang berwarna hitam atau hitam kecoklatan dan berbau tanah.
Penelitian bertujuan untuk memanfaatkan tanah Ultisol dalam meningkatkan pertumbuhan dan produksi jagung dengan memperbaiki kendala pada tanah Ultisol, salah satu kendala yaitu kandungan bahan organik yang rendah. Pemberian kompos tandan kosong kelapa sawit (TKKS) ber-bakteri selulolitik merupakan alternatif untuk memperbaiki kendala pada tanah Ultisol tersebut. Penelitian telah dilaksanakan di kebun percobaan Fakultas Pertanian Universitas Riau pada bulan November 2020 sampai Maret 2021. Penelitian dilakukan secara eksperimen dengan menggunakan rancangan acak lengkap (RAL) non faktorial dengan 4 ulangan. Pemberian kompos TKKS ber-bakteri selulolitik sebagai berikut: T0 = 0 t.ha-1, T1 = 5 t.ha-1, T2 = 10 t.ha-1, T3 = 15 t.ha-1, T4 = 20 t.ha-1. Data hasil pengamatan selanjutnya dianalisis secara statistik menggunakan analisis ragam dengan uji lanjut BNJ pada taraf 5%. Pengamatan dilakukan terhadap tinggi tanaman, umur muncul bunga jantan, umur muncul bunga betina, berat kering tanaman dan rasio tajuk akar. Hasil penelitian ini menunjukkan bahwa pemberian kompos TKKS ber-bakteri selulolitik meningkatkan secara nyata tinggi tanaman, muncul bunga jantan, muncul bunga betina, berat kering tanaman dan rasio tajuk akar. Berdasarkan hasil penelitian dianjurkan menggunakan TKKS ber-bakteri selulolitik dengan dosis 20 t.ha-1 untuk mendapatkan pertumbuhan yang terbaik.
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