Jurnal Floratek
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BIOLOGI HAMA KUTU PUTIH PEPAYA (Paracoccus marginatus) PADA TANAMAN PEPAYA
No full textMealybug (Paracoccus marginatus) is a new pest attacted papaya that effect quantity and quality of papaya production. The research was aimed at study of biology and development of papaya mealy bug; from an egg stadium to mature bug. The experiment was conducted at plant field experiment of Agriculture Faculty, Syiah Kuala University from May to November 2011. To understand the biology and development of mealy bug, a survey and collection of P. Marginatus were conducted for mass production in laboratory, then they were invested on healthy papaya leaf. In the future the result of this study will be used as a pest control recommendation
KEEFEKTIFAN CENDAWAN Beauveria bassiana Vuill TERHADAP MORTALITAS KEPIK HIJAU Nezara viridula L. PADA STADIA NIMFA DAN IMAGO
No full textThe objectives of the study was to obtain an effective concentration of B. bassiana to control pests of N. Viridula. Experiment was performed at Laboratory of Pest, Agriculture Faculty, Syiah Kuala University Darussalam, Banda Aceh. The experiment used a faktorial completely randomized design (CRD). Factors evaluated were (1) concentration of B. bassiana consisting of three levels: 2 gL-1 distilled water, 4 gL-1 distilled water, and 6 gL-1 distilled water, and (2) stadia of N. viridula consisting of 2 levels: third instar nymphs and imago. Variable observed were incubation period, mortality of N. viridula, time of death, and percentage of feeding inhibition. The results showed that concentration of B. bassiana and stadia of N. viridula had no effect on incubation period of fungus B. bassiana. Concentration of B. bassiana affected mortality and time of death of nymph and imago N. viridula. Concentration of fungus B. bassiana affected percentage of feeding inhibition. In general, fungus B. bassiana had a high potential on controlling insect N. viridula
SIFAT TANAH DAN AIR YANG TERPENGARUH TSUNAMI DI KECAMATAN LHOKNGA KABUPATEN ACEH BESAR
No full textLhoknga Sub District was one of regions experiencing earthquake and tsunami disaster occurred on 26 December 2004. The aims of the research were to evaluate soil characteristics, to study land suitability and to propose recommendation of land use and rehabilitation of the tsunami affected agricultural area in Lhoknga Sub District. The result showed that soil textures were varied from very coarse at the area near to the coastline to rather fine at the area far from the coast. The soil structures of topsoil was generally plate and blocky, while that of subsoil was generally massive. The quality of irrigation water in was still suitable for crops, the pH of water was neutral and low in salinity (0,4 mS cm-1). The water quality of wells was high (good) and water quality of drainage and surface water was low (rather bad). Water quality of wells was good enough, indicated by low water salinity (0,26-0,78 mS cm-1) and low of SAR value. The recommendations for land reclamation were (1) cleaning and repairing of irrigation and drainage channel (2) leaching of salinity in topsoil from soil profile by flooding method (basin irrigation) or furrow irrigation, (3) constructing the ditches for cultivation in managing the excess of salinity, (4) establishing ditches for paddy, and (5) removing the sediment above the topsoil
PENGARUH EKSTRAK RIMPANG JERINGAU (Acorus calamus L.) TERHADAP MORTALITAS ULAT GRAYAK Spodoptera litura F.
No full textThe purpose of this study was to obtain an effective concentration of the extract of sweet flag rhizome in controlling S. litura. This research was conducted at Laboratory of Plant Pests and Diseases, Agriculture Faculty, Syiah Kuala University, Banda Aceh. This research used a Completely Randomized Design (CRD) non-factorial, with six levels of extract concentrations, that is 0%, 3%, 6%, 9%, 12%, and 15%. Each treatment was repeated four times. The variables measured were mortality of larvae, percentage of formed pupae, percentage of emerging imago, and life length of imago. The results showed that application of the sweet flag rhizome extract affected mortality of larvae, formed pupae, emerging imago, and life length of imago S. litura. Use of sweet flag rhizome extract with a concentration of 3% was effective in controlling S. litura. Application of sweet flag rhizome extract with a concentration of 3% resulted in larval mortality up to 57.50%, formation of pupa only 20%, emerging imago 5%, and average life length of imago S. litura 1.25 days
SIFAT KIMIA DAN EVALUASI SENSORI BUBUK KOPI ARABIKA
No full textStudy of chemical characteristics and sensory evaluation of e Arabica coffee pawder (Coffea arabica L.) has been performed. The results showed that chemical characteristics significantly differed among varieties tested. Variety Gayo 1 had water content 13.39%, the highest water content compared to Variety P88 and Variety Bergendal. Varieties Gayo 1 had fat content 5.66% and was significantly different from other two varieties. Caffeine levels were significantly different among varieties; Varieties P88 0.95%, Varieties Gayo 1 0.99%, Varieties Bergendal 1.09% but all varieties had met a standard caffeine content of coffee ground. Sensory evaluation using a quantitative descriptive analysis showed that coffee powder of Variety Gayo 1 was received by panelists on attributes of flavor, taste, and overall acceptance, while coffee powder of Variety Bergendal had a low value of the attributes tested
PERUBAHAN FISIOLOGI DAN KANDUNGAN KLOROFIL SELAMA PEMASAKAN SERTA HUBUNGANNYA DENGAN VIABILITAS BENIH JARAK PAGAR (Jatropha curcas L.)
No full textThe objectives of this research were to study physiological and chlorophyll changes during seed ripening and find quick parameters as indicators to determine seed physiological maturity level. A randomized completely block design with 5 treatments and 3 replications was used in this research. The treatments were (1) dark green fruit, 42 days after anthesis (DAA), (2) yellowish green fruit, 47 DAA, (3) fully green fruit, 52 DAA, (4) brownish yellow fruit, 57 DAA, and (5) dark brown fruit, 62 DAA. The results showed that jathropa seed was physiologically mature at 57 DAA with criteria: fruit color was brownish yellow, fruit skin was soft and easily hand-opened, and seed was black. These were also supported by seed dry weight, germination percentage, germination rate and first count germination. There were negative relationships between seed chlorophyll content and germination percentage, germination rate and first count germination
INFEKTIVITAS MIKORIZA PADA BERBAGAI JENIS TANAMAN INANG DAN BEBERAPA JENIS SUMBER INOKULUM
No full textThis research was aimed to study types of host plants and sources of inoculum on mycorrhizal infectiveness.The study was conducted at Screenhouse and Soil Chemistry Laboratory of Agriculture Faculty, Unsyiah, and Soil Biology Laboratory of Agriculture Faculty, USU from July 2011 to November 2011.This research used a randomized complete block design (RCBD) factorial of two factors with three replications.Factors studied were several types of host plants and some types of sources of inoculum.Host factors consisted of A1 = kudzu, A2 = soybean, A3 = corn and factors source of inoculum consisted of B1 = spore from rhizosfer kudju, B2 = r spores from soybean, B3 = spores from corn. Variables observed were degree of mycorrhizal infection. Results showed that there was an interaction between host plant species and inoculums sources of mycorrhizal infectivity.The best infectivity was a combination of host plant kudzu and source of spore from kudzu
KARAKTERISTIK PERTUMBUHAN DAN HASIL JAMUR MERANG (Volvariella volvacea L.) PADA MEDIA TANAM DAN KONSENTRASI PUPUK BIOGREEN YANG BERBEDA
No full textThe objectives of this study were to evaluate characteristics of growth and yield of Volvariella volvacea L in different growing media and concentration of Biogreen fertilizer. Growing media consisted of rice straw and oil palm waste. Concentration of Biogreen fertilizer consisted of 0.5%, 1.0% and 1.5%. The result showed that rice straw gave better growth and yield of the mushroom but the highest production of the mushroom was at oil palm media. Concentration of Biogreen at level 1.5% gave better growth and yield of the mushroom. The best combination for fresh mushroom numbers was rice straw and concentration 5% Biogreen fertilizer but the best combination for mushroom yield was oil palm waste and concentration 5% Biogreen
PENGARUH PUPUK ORGANIK DAN ANORGANIK TERHADAP PERTUMBUHAN BEBERAPA VARIETAS JAGUNG MANIS DI LAHAN TSUNAMI
No full textThe study was aimed at determining responses of several sweet corn varieties to organic and inorganic fertilizers on tsunami affected land and knowing interactions between both factors on growth and yield of sweet corn. The experiment was conducted in Village of Lampuuk, Lhoknga, District of Aceh Besar, from January 7 to March 19, 2008. This research was conducted using a randomized complete block design (RCBD), 3 x 3 with 3 replications. There were two factors studied, namely fertilizations, consisting of 3 levels: 100% organic fertilizer, 50% organic fertilizer + 50% inorganic fertilizers and 100% inorganic fertilizers. The second factor was varieties, consisting of 3 levels: Sweet Boy, Hawaiian Sweet Corn Hybrid F1 and Super Bee. The results showed that fertilization significantly affected ear weight with and without cornhusk, but did not affect diameter of ear and seed rows per ear. The highest result was found at a treatment of 50% organic fertilizer + 50% inorganic fertilizers, but was not significantly different from 100% organic fertilizer. Varieties showed no significant effects on all variables observed. There were significant interactions between fertilizations and varieties on plant height at age 42 and 63 day after planting (DAP), leaf length at age 21, 42, and 63 DAP, and root fresh weight at age 21 DAP. The best plant growth was found at a combination of Sweet Boy and 50% organic fertilizer + 50% inorganic fertilizer
RESPONS PERTUMBUHAN STUMP JATI (Tectona grandis L.f.) TERHADAP DOSIS DAN WAKTU APLIKASI PUPUK PHOSKA
No full textA field experiment was conducted to determine the growth responses of teak stump to NPK fertilizer that contains S nutrient. The stumps of teak were treated with Phoska fertilizer: 0, 5, 10, 15 g/plant and the fertilizer dosages were applied at 0, 5, 10, and 15 days after planting. The results of the study showed that stem diameter, stem height, and seedling height of the teak were significantly affected by the dosages and application times of Phoska fertilizer at 1, 2, 3, and 4 months after planting. The leaf numbers, leaf length, and leaf width responded significantly to Phoska fertilizer. This study found a significant interaction between the dosages and application times of Phoska fertilizer on seedling height and leaf length at one month old after planting; on stem height, seedling height, and leaf numbers at three month old; on stem diameter, stem height, seedling height, and leaf numbers at four month old after planting. The study revealed that the application of 10 g/plant Phoska applied at a planting day was the best treatment to enhance the growth of teak stump