Modeling Statistical Downscaling for Prediction Precipitation Dry Season in Bireuen District Province Aceh

The Asian-Australian monsoon circulation specifically causes the Indonesian region to go through climate changebility that impacts on rainfall variability in different Indonesia's zone. Local climate conditions such as rainfall data are commonly simulated using GCM time series data. This study tries to model the statistical downscaling of GCM in the form of 7x7 matrix using Support Vector Regression (SVR) for rainfall forecasting during drought in Bireuen Regency, Aceh. The output yields optimal result using certain parameter i.e. C = 0.5, γ = 0.8, d = 1, and ↋= 0.01. The duration of computation during training and testing are ± 45 seconds for linear kernels and ± 2 minutes for polynomials. The correlation degree and RMSE values of GCM and the actually observed data at Gandapura wheather station are 0.672 and 21.106. The RSME value obtained in that region is the lowest compared to the Juli station which is equal to 31,428. However, the Juli station has the highest correlation value that is 0.677. On the other hand, the polynomial kernel has a correlation degree and RMSE value equal to 0.577 and 29,895 respectively. To summary, the best GCM using SVR kernel is the one at Gandapura weather station in consideration of having the lowest RMSE value with a high correlation degree

Pengaruh Pemberian Abu Serbuk Gergaji dan Pupuk Guano terhadap Pertumbuhan dan Produksi Tanaman Cabai (Capsicum Annuum L.)

This research aim to determine the effect of giving sawdust ash and guano fertilizer between both of it on chilli (Capsicum annuum L.) growth and production as well as to find out the best dose. This research has been conducted at Experimental Garden, University of Riau, Tampan District, lasted from April to September 2013. Research was arranged experimentally using Completely Randomized Block Design (CRBD) with 2 factor, first is giving sawdust ash and the second one is fertilizing with guano fertilizer which is each of it consist by 3 replication. First factor; A0, A1, A2 and A3 (0, 5, 10 and 15 ton/ha), second factor; G0, G1 and G2 (0, 60 and 120 g/plot). Oberserved parameters are plant height, flowering date, harvesting date, total weight per plant, total weight per plot, fruit length, fruit girth and number sampling fruit. Data analyzed using the F test and Duncan New's Multiple Range Test (DNMRT) 5% level. Result shows that the combination of giving sawdust ash and Guano Fertilizer reveal non significantly different to all of the parameters, but by giving sawdust ash and guano fertilizer reveal significantly different to the plant height

Campuran Kompos Tandan Kosong Kelapa Sawit Dengan Kompos Lcc Dan Pupuk Fosfor Terhadap Pertumbuhan Dan Hasil Sorgum (Sorghum Bicolor (L.))

This research is aimed to determine the effect of oil palm empty fruit bunches compost mixed with leguminosa cover crop compost and phosphorus fertilizers at some compositions and to get the best mixed toward growth and result of sorghum. This research was conducted at the experiment land of Agriculture Faculty of Riau University, Pekanbaru, from December 2013 to April 2014. This research used factorial completely randomized design (CRD) consisted of two factors and three replications. As for the treatment is: factor 1 is oil palm empty fruit bunches compost mixed with leguminosa cover crop compost (K) consist of four level, K1= 5 ton/ha oil palm empty fruit bunches compost, K2= 3,75 ton/ha oil palm empty fruit bunches compost + 1,25 ton/ha leguminosa cover crop compost, K3= 2,5 ton/ha oil palm empty fruit bunches compost + 2,5 ton/ha leguminosa cover crop compost, K4= 1,25 ton/ha oil palm empty fruit bunches compost + 3,75 ton/ha leguminosa cover crop compost. Factor 2 is phosphorus fertilizers (P) consist of three level, P0= without TSP, P1= 30 kg/ha TSP, P2= 60 kg/ha TSP. The results of this research showed that 1,25 ton/ha oil palm empty fruit bunches compost mixed with 3,75 ton/ha leguminosa cover crop compost and 60 kg/ha phosphorus fertilizers provide the best results for 245,20 g/m2(2,45 ton/ha) increased by 18,27% compared without P and is significant for the parameters of plant height, dry weight of plants, result per m2 and sorghum biomass

Aplikasi Kompos Tandan Kosong Kelapa Sawit dan Mikoriza Arbuskula untuk Meningkatkan Pertumbuhan Bibit Manggis (Garcinia Mangostana L.)

Abstrac Mangosteen (Garcinia mangostana L.) is one of the most Indonesian favored fruit, because the ripe fruit (ripe) has a distinctive taste, sweet, sour and fresh. The main problem encountered in the cultivation of mangosteen is to provide theseeds. Weak mangosteen plant roots decrease growth level. This study aims to determine the interaction of palm oil empty bunches compost with Arbuscular Mycorrhiza on the seed growth of mangosteen and get the best dose. This research was conductet AgricultureFaculty, University of Riau campus Bina Widya Tampan, Pekanbaru lastedOctober 2012 until January 2013. The results of shows that by using TKKS compost with a dose of 150 g/polybag and the use of mycorrhizae 15g/polybag is better than giving 150 g/polybag and mhycorrizhal 20 g/polybag because the results are not significantly different. To get the combination use of empty fruit bunches of oil palm compost and mycorrhizal needs to be done in a long time , to get more tangible results

Penurunan Kadar Logam Kadmium Pada Air dengan Menggunakan Koagulan Serbuk Biji Kelor (Moringa Oleifera,Lamk) dan Poly Aluminium Chloride

Perkembangan industri di Indonesia selalu mengalami peningkatan, Aktifitas industri selain memberikan dampak positif tentu juga akan memberikan dampak negatif yang sangat jarang disadari oleh masyarakat. Salah satunya adalah limbah cair yang dihasilkan oleh industri yang tidak mengalami penanganan yang sempurna, sehingga dapat menyebabkan pencemaran, seperti pencemaran logam berat, salah satunya pencemaran logam kadmium. Oleh karena itu perlu dilakukan solusi untuk mengatasi pencemaran tersebut, salah satu cara yang dapat dilakukan yaitu dengan menggunakan metode absorbsi melalui proses koagulasi, yaitu dengan menggunakan koagulan serbuk biji kelor dan Poly Aluminium Chloride. Tujuan penelitian ini adalah untuk mengetahui pengaruh perbedaan konsentrasi, daya serap dan efektifitas dari serbuk biji kelor dan PAC dalam menurunkan kadar logam kadmium pada air. Penenlitian ini meliputi proses preparasi serbuk biji kelor, proses koagulasi menggunakan serbuk biji kelor, proses koagulasi menggunakan PAC, proses destruksi dan uji penurunan kadar kadmium pada air menggunakan alat AAS. Hasil penelitian yang dilakukan menyatakan semakin tinggi konsentrasi koagulan serbuk biji kelor yang digunakan dalam menurunkan kadar logam Cd pada air, maka semakin meningkat pula penyerapan terhadap logam Cd, sedangkan PAC akan mengalami penurunan penyerapan logam pada konsentrasi 2 gram dalam 50 mL air, serbuk biji kelor memiliki daya serap yang lebih tinggi dalam menurunkan kadar logam Cd yaitu penyerapan logam Cd tertinggi adalah sebesar 4,53 mg/L pada penambahan koagulan sebesar 2 gram, sedangkan penurunan logam Cd tertinggi pada penambahan koagulan PAC adalah sebesar 0,98 mg/L pada penambahan 1,5 gram koagulan PAC dan serbuk biji kelor lebih efektif daripada PAC dalam menurunkan kadar logam Cd pada air. Kata kunci :Pencemaran, Biji Kelor, Protein Kationik, PAC dan Logam Kadmium

Pengaruh Pemberian Limbah Serasah Jagung Terhadap Pertumbuhan Dan Produksi Tanaman Jagung Manis (Zea Mays Saccharata Sturt

The researchaimed to examinethe effect of waste litter cornand obtain the best to the growthand yield ofsweet corn(Zea mayssaccharataSturt). This study has been conducted in Jl.kartama, RT. 04 RW. 07 subdistrict Marpoyan Damai, Pekanbaru from November 2016 to Februari 2017. The researchexperiment use complete design random (CDR) consisting of 4 treatment and 5 replicationthen obtained20 experimentunits. The treatment tested was giving is :K0 = without waste litter corn, K1 = 10 ton/ha (6 kg/plot) of waste litter corn, K2 = 20 ton/ha (6 kg/plot) of waste litter corn, K3 = 30 ton/ha (6 kg/plot) of waste litter corn, K4 = 40 ton/ha (6 kg/plot) of wastelitter corn. The observed used is plant height,male flowersappear,female flowersappear,harvestingage, the production per plot, weight per seed of husk, diameter corncob without husk,cob lenght, and the number of seed lines. Waste litter of corndosage of 24 kg / plot is the best treatment on plant height parameters, male flowersappear, the number of seed lines, and production per plot. Corn waste litter dosage at 18 kg / plot is the best treatment on the parameters of female flowersappear, harvesting age, weight per seed of husk, cob length, and the diameter corncob