Pemanfaatan Pupuk Guano dalam Sistem Pertanian Berkelanjutan dan Dampaknya pada Pertumbuhan dan Hasil Tanaman Jagung Manis (Zea mays saccharata L)

Guano can be used as an organic fertilizer in anticipating fertilizer shortages. This study aims to obtain the right dose of guano for the growth and yield of sweet corn (Zea mays saccharata L). The method used in this study was a single-factor randomized block design, consisting of 4 treatments of doses of guano fertilizer and 4 replications. Fertilizer dosage treatments were: g0 = no guano, g1 = 3 tons guano/ha, g2 = 5 tons guano/ha, g3 = 7 tons guano/ha. Observation parameters consisted of plant height (cm), the number of leaves (strand), the diameter of the stem (cm), the diameter of the ear (cm), the length of the ear (cm), and the weight of fruit/bed (kg). The results showed that the use of guano at a dose of 7 tons/ha was the best dose for plant height, the number of leaves, ear diameter, stem diameter, and cob weight. It was concluded that guano could increase the growth and yield of sweet corn.   Keywords: corn, guano, organic fertilize

Analisis Investasi Dalam Menentukan Portofolio Optimal Di Bursa Efek Jakarta

This research is an effort to show how to analyse an investment by diversificating in order to minimize the risk and to gain expected profit through Simple Criteria for Optimal Portfolio Selection (SCOPS) method supported by Capital Asset Pricing Model (CAPM) method as a comparative factor. Data were taken from Index LQ 45 which having the bigest capitalization and liquid in trading frequency. Sampling with drawal was done with certain creterians and 27 selected from 45 population. Results of this research indicates that beta as a risk measurement reffecting less influence on market. 27 from selected samples 5 of them become optimal portfolio candidates among others Lippo Land Devlopment (LPLD), Astra International Inc (ASII), Telkom (TLKM), Lippo Bank (LPBN), and Barito Pacific Timber (BRPT) with each Excess Return to Beta (ERB) 2.2576, 2.0407, 0.5102, 0.4576 and 0.2801 which is higher than cut off rate (C*) namely 0.1106. The proportion of invested funds on each share 16.65 % for LPLD, 56.91 % for ASII, 14.82 for TLKM, 5.20 % for LPBN, and 6.42 % for BRPT with return portfolio ( ) 0.0406 and portfolio risk ( ) 1.5839. It is concluded that SCOPS method has been functioned in line with this research of which the selected shere become optimal portfolio candidate is the best diversification although the resnlt of test corelation is not significant

PERAN PEMUPUKAN POSFOR DALAM PERTUMBUHAN TANAMAN JAGUNG (Zea mays L.) DI TANAH REGOSOL DAN LATOSOL

Phosphorus (P) is an essential element for plants, deficiency and excess of P in soil will limit plant growth. It is required to applicate P fertilizer in appropriate dosage for promoting plant growth on the soil with different properties. The purpose of experiment was to study the respon of maize (Zea mays L.) for phosphorus fertilization on Regosol and Latosol soils. A glass house experiment was conducted to study maize response on P fertilizer application in Regosol and Latosol soils. The treatment 1was 0, 112, 336, 1008, 3024 and 9072 kg superfosfat ha . P fertilizer tend to increase the biomass of maize but exceed of P fertilizer reduced maize biomass. The optimum fertilization and vailability of P for plant affected by soil properties

Induksi Kalus Umbi Iles-Iles (Amorphophallus muelleri) dengan Kombinasi Konsentrasi 2,4-D dan BAP Secara In Vitro

Iles-iles (Amorphophallus muelleri) merupakan tanaman umbi-umbian yang mengandung kadar glukomannan tertinggi di antara Amorphophallus lainnya yang berada di Indonesia. Iles-iles mempunyai potensi dan prospek untuk dikembangkan karena senyawa glukomannan pada umbi mempunyai nilai ekonomi tinggi. Perbanyakan iles-iles secara alami membutuhkan waktu lama karena memiliki dormansi 1–5 bulan sehingga dilakukan alternatif perbanyakan dengan kultur jaringan. Tujuan penelitian adalah mendeskripsikan pengaruh kombinasi konsentrasi 2,4-D dan BAP terhadap pembentukan kalus umbi iles-iles secara in vitro dan memperoleh kombinasi konsentrasi 2,4-D dan BAP yang terbaik dalam pembentukan kalus. Penelitian ini menggunakan Metode Rancangan Acak Lengkap (RAL) dengan variabel manipulasi A = 0,5 mg/l 2,4-D + 1 mg/l BAP, B = 1 mg/l 2,4-D + 1 mg/l BAP, C = 1,5 mg/l 2,4-D + 1 mg/l BAP, D = 0,5 mg/l 2,4-D + 1,5 mg/l BAP, E = 1 mg/l 2,4-D + 1,5 mg/l BAP. Parameter pengamatan adalah waktu induksi kalus, biomassa kalus, pembentangan eksplan, warna dan tekstur kalus yang dianalisis secara deskriptif. Hasil penelitian menunjukkan bahwa kombinasi konsentrasi 2,4-D dan BAP berpengaruh terhadap induksi kalus umbi iles-iles dan kombinasi konsentrasi terbaik dalam menginduksi kalus umbi iles-iles adalah 1 mg/l 2,4-D + 1 mg/l BAP (perlakuan B) dengan rerata waktu induksi 13 hari, rerata biomassa kalus 567 ± 413 mg, rerata pembentangan eksplan 7,31 ± 1,70 mm, dan terbentuk kalus yang kompak dan berwarna putih.    Kata kunci: umbi Iles-iles; 2,4-D; BAP; kalus; in vitro   &nbsp

ANALISIS PENGARUH PRODUK DOMESTIK REGIONAL BRUTO PERKAPITA, TINGKAT EMPLOYMENT, PENGELUARAN PEMBANGUNAN DAN INVESTASI TERHADAP PENDAPATAN ASLI DAERAH JAWA TENGAH TAHUN 1979 – 2004

Penelitian ini berjudul Analisis Pengaruh Produk Domestik Regional Bruto Perkapita, Tingkat Employment, Pengeluaran Pembangunan dan Investasi terhadap Pendapatan Asli Daerah di Jawa Tengah Tahun 1979 - 2004. Penelitian ini bertujuan untuk mengetahui variabel apa saja yang paling dominan terhadap PAD di Jawa Tengah. Penelitian ini dilakukan dengan menggunakan model ECM (Error Correction Model) disamping itu untuk mendapatkan hasil estimasi yang valid dilakukan pengujian asumsi klasik di antaranya uji multikolinieritas, uji heterokedastisitas, uji autokorelasi, uji normalitas dan uji spesifikasi model (ramsey reset) serta pengujian statistik yaitu uji t, uji F dan uji R2. Variabel yang digunakan dalam penelitian ini adalah PAD Jawa Tengah sebagai variabel dependen, sedangkan PDRB Perkapita, Employment, Pengeluaran Pembangunan, dan investasi sebagai variabel independen. Hasil penelitian ini menunjukkan bahwa t hitung dari variabel PDRB Perkapita, employment, pengeluaran pembangunan dan investasi baik dalam model jangka pendek maupaun jangka panjang secara keseluruhan tidak berpengaruh signifikan terhadap variabel PAD di Jawa Tengah sampai dengan tingkat signifkansi a = 0.1. Sedangkan uji F menunjukkan persamaan model cukup eksis untuk digunakan dimana F hitung > F tabel sehingga Ho ditolak. Nilai R2 sebesar 0,921494 menunjukkan bahwa 92,15% variasi dari variabel dependen (PAD) dapat dijelaskan oleh variasi variabel independen (PDRB Perkapita, employment, pengeluaran pembangunan dan investasi) dan sisanya sebesar 7.85% dijelaskan oleh variabel lain diluar model. Setelah dilakukan uji asumsi klasik dapat diketahui bahwa dalam uji multikolinieritas, uji normalitas, uji autokorelasi dan uji spesifikasi model (ramsey reset) mempunyai masalah dalam model, sedangkan pada uji heteroskedastisitas tidak terdapat masalah dalam model. Dari regresi model lengkap dapat diketahui bahwa nilai koefisien ECT (Error Correction Term) sebesar 0.543030 hal ini menunjukkan bahwa estimasi model ECM memperlihatkan nilai koefisien regresi variabel ECT yang memenuhi kriteria dimana terletak diantara 0-1 yaitu sebesar 0.543030 tetapi tidak signifikan pada derajat sampai dengan a = 0.1

Analisis Kinerja Keuangan Ditinjau Dari Aspek Rasio Likuiditas Dan Rentabilitas Modal PT. Pajjaiang Indah Makassar

The purpose of this research is to determine the financial performance of PT. Pajjaiang Indah in terms of the ratio of liquidity and profitability of own capital in 2017-2019. The liquidity ratios used in this study are the current ratio, the quick ratio, and the cash ratio. And the profitability of own capital. The research method used is descriptive qualitative, and uses the type of secondary data which is data that has been processed in the form of financial reports sourced from PT. Pajjaiang Indah which consists of a profit and loss statement and balance sheet from 2017-2019. The results of the analysis of the financial performance of PT. Pajjaiang Indah Makassar, in terms of the liquidity ratio aspect from 2017-2019, using the Current Ratio calculation, the liquidity level shows an average of 1.82 times or 182% of the standard 2 times or 200%, this means the level of liquidity at PT . Pajjaiang Indah in terms of the Current Ratio (Current Ratio) is declared illiquid. Meanwhile, in terms of the Quick Ratio aspect, it shows an average of 1.69 times or 169% from the standard 1.5 times or 150%, this means that the liquidity level of PT. Pajjaiang Indah in terms of the Quick Ratio aspect is declared liquid. And viewed from the aspect of the Cash Ratio (Cash Ratio) shows an average of 0.24 times or 24% of the standard 1 time or 100%, this means the level of liquidity of PT. Pajjaiang Indah in terms of the Cash Ratio aspect is declared illiquid. From the description of the three aspects of the liquidity ratio, it can be concluded that the level of liquidity of PT. Pajjaiang Indah in 2017 – 2019 was low. From the results of the analysis of the profitability ratio of its own capital, PT. Pajjaiang Indah in 2017 - 2019 obtained an average calculation of 24% from the standard 40%, it can be concluded that the average level of profitability of PT. Pajjaiang Indah in 2017 – 2019 was low