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The National Amil Zakat Agency (Baznas) of Siak Regency is a zakat management agency in the Siak Regency area which is responsible for reports to the Regent. The purpose of this study was to analyze and explain the effectiveness of the distribution of Zakat by the National Amil Zakat Agency of Siak Regency (Koto Gasib District Study). The type of research used is descriptive research with qualitative methods by analyzing data in the form of interviews and observations. The study was conducted in Koto Gaasib District, Siak Regency by assessing the effectiveness of the distribution of zakat carried out by Baznas, Siak Regency, to Mustahik in Koto Gasib District. The sample in this study consisted of the Head of Baznas, Deputy II for Distribution and Utilization, staff, UPZ Koto Gasib and Mustahik. The results of the research conducted have not been fully effective because there are still several obstacles found, including the socialization carried out by Baznas has not been maximized because the purpose of socialization is focused on muzakki. In addition, reporting from mustahik regarding its business development is also not clear. The suggestions that will be recommended are that the socialization must be balanced to both muzakki and mustahik, as well as the reporting provided by mustahik about business development to the Baznas of Siak Regency.

Conversion of tropical forest to agriculture results in reduced habitat heterogeneity, and associated declines in biodiversity and ecosystem functions. Management strategies to increase biodiversity in agricultural landscapes have therefore often focused on increasing habitat complexity; however, the large-scale, long-term ecological experiments that are needed to test the effects of these strategies are rare in tropical systems. Oil palm (Elaeis guineensis Jacq.)—one of the most widespread and important tropical crops—offers substantial potential for developing wildlife-friendly management strategies because of its long rotation cycles and tree-like structure. Although there is awareness of the need to increase sustainability, practical options for how best to manage oil palm plantations, for benefits to both the environment and crop productivity, have received little research attention. In this paper we introduce the Biodiversity and Ecosystem Function in Tropical Agriculture (BEFTA) Programme: a long-term research collaboration between academia and industry in Sumatra, Indonesia. The BEFTA Programme aims to better understand the oil palm agroecosystem and test sustainability strategies. We hypothesise that adjustments to oil palm management could increase structural complexity, stabilise microclimate, and reduce reliance on chemical inputs, thereby helping to improve levels of biodiversity and ecosystem functions. The Programme has established four major components: (1) assessing variability within the plantation under business-as-usual conditions; (2) the BEFTA Understory Vegetation Project, which tests the effects of varying herbicide regimes; (3) the Riparian Ecosystem Restoration in Tropical Agriculture (RERTA) Project, which tests strategies for restoring riparian habitat; and (4) support for additional collaborative projects within the Programme landscape. Across all projects, we are measuring environmental conditions, biodiversity, and ecosystem functions. We also measure oil palm yield and production costs, in order to assess whether suggested sustainability strategies are feasible from an agronomic perspective. Early results show that oil palm plantation habitat is more variable than might be expected from a monoculture crop, and that everyday vegetation management decisions have significant impacts on habitat structure. The BEFTA Programme highlights the value of large-scale collaborative projects for understanding tropical agricultural systems, and offers a highly valuable experimental set-up for improving our understanding of practices to manage oil palm more sustainably.

Development of potato cultivation need to be done in order to meet the need of national demand, one of its effort is cultivating potato in medium altitute land, that is 300 to700 m asl. This research was aimed to develop cultivation technology of potato in medium altitude land through applying treatment of kieserite fertilizer (Magnesium fertilizer) and the shading. the research was conducted in August to December 2016. This study used a randomized design group (RDG) factorial composes of two factors. The first factor was using kieserite fertilizer that consisted of five levels, those were 0 kg/ha, 50 kg/ha, 100 kg/ha, 150 kg/ha, and 200 kg/ha. The second factor was shading by using 60% density and no shading. Data was analyzed using Anova (Analyzed of Variance).The results of the analysis suggests that the use of shade with 60% density gave a significant effect on plant height of 14 DAP (Day After Planting), 28 DAP, and 42 DAP, leaf area 42 DAP, and gave a significant effect in number of tuber and no real effect in number of branch. Treatment of kieserite fertilizer (Mg) gave a real effect in the number of branch of plant of 42 DAP, but there was no effect in plant height aged 14 DAP, 28 DAP, and 42 DAP, leaf area 42 DAP, the number of tuber, the weight of tuber. Interaction between shading and kieserite fertilizer (Mg) showed real significant in plant height, leaf area, number of branch, number of tuber, and tuber weight, however the application of the dose and an intensity of kieserite fertilizer may less appropriate., Pengembangan budidaya kentang perlu dilakukan untuk meningkatkan hasil produksi nasional, salah satu langkahnya yaitu dengan mengembangkan kentang di dataran medium 300 sampai 700 m dpl. Penelitian ini bertujuan untuk mengembangkan teknologi budidaya kentang pada dataran medium melalui pengaplikasian pupuk kieserite (Mg) dan naungan. Pelaksanaan penelitian di mulai dari bulan Agustus 2016 sampai dengan bulan Desember 2016. Penelitian ini menggunakan rancangan acak kelompok (RAK) faktorial yang terdiri dari dua faktor. Faktor pertama yaitu pupuk kieserite terdiri dari lima taraf : 0 kg/ha, 50 kg/ha, 100 kg/ha, 150 kg/ha, dan 200 kg/ha. Faktor kedua yaitu naungan dengan kerapatan 60% dan tanpa naungan. Hasil analisis data menunjukkan penggunaan naungan dengan kerapatan 60% berpengaruh sangat nyata pada tinggi tanaman umur 14 HST, 28 HST, dan 42 HST, luas daun 42 HST, serta berpengaruh sangat nyata terhadap jumlah umbi persampel, berat umbi persampel dan tidak berpengaruh nyata pada jumlah cabang tanaman. Perlakuan pupuk kieserite (Mg) memberikan pengaruh nyata pada jumlah cabang tanaman umur 42 HST, tetapi tidak berpengaruh terhadap tinggi tanaman umur 14 HST, 28 HST, dan 42 HST, luas daun 42 HST, jumlah umbi persampel, berat umbi persampel. Interaksi antara naungan dan pupuk kieserite (Mg) tidak memberikan pengaruh nyata pada tinggi tanaman, luas daun, jumlah cabang, jumlah umbi, dan berat umbi, hal ini diduga karena kurang sesuainya dosis dan intensitas pemberian pupuk kieserite (Mg) yang di aplikasikan.

The latasir mixture using nambo sand and cemet tonasa as filler in the mixture is expected to obtain flexibility. For for that the aggregate characterisrtics and composition of the mixture must meet the specifications. The method used in this study using trial and error method is by making some specimens to be sampled. Methods of research aggregate testing , asphalt test and manufacture of specimSens on asphalt mixture with variation of bitumen content le 5,0%,5,5%,6,0%,6,5%,7,0%,7,5%,8%,8,5%,9%. Based on the results obtained from the aggregate sieve analysis data for Latasir mixture composition ie Sand nambo = 90% and Semen Tonasa Filler =1in 0%. In The Marshall mixture of Latasir between Pasir nambo and Semen Tonasa, the value of Asphalt Optimum (KAO) was 8.5%.