Jurnal Agrista
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Respon Jagung Manis (Zea mays, Sacharata SHOUT) Terhadap Penggunaan Mulsa dan Pupuk Organik
Get PDFThe Response of Sweet Corn (Zea mays, Sacharate SHOUT) on Mulch and Organic FertilizerABSTRACT. This study aims to determine the response of maize (Zea mays, Sacharata SHOUT) against the use of several types of organic mulch and organic fertilizer super nasa and whether there is an interaction between both factors. This research has been conducted in the village of Kuala Batee, Terbue District of Southwest Aceh district which lasted from 17 july - 30 october 2008, and with Research Randomized factorial arranged with the combined treatment of organic mulch (M) that M1 = straw, M2 = bagase, M3= rice husk, while the organic fertilizer treatments super nasa (P) is P1 = 10 g / l of water, P2 = 20 g / l of water and P3 = 30 g / l of water with three replications. Results showed that oral administration of organic mulch significantly affect corn production, the best production of mulch was found in rice husk (M3) significant than other types of organic mulch. Fertilizer did not affect the process of growth and yield of maize. There is interaction between the type of Mulching with organic fertilizer super nasa. The best combination was obtained in the combined treatment M2P1 or M3P3
Pertumbuhan Bibit Kelapa Sawit (Elaeis guineensis JACQ) pada Berbagai Komposisi Media Tanam dan Konsentrasi Pupuk Daun Seprint
No full textOil Palm Seedling Growth on Various Planting Media Compotition and Seprint LeavesFertilizer ConcentrationABSTRACT. The objective of this experiment was to study effect of various planting media compotition and Seprint leaves fertilizer concentration on oil palm seedling growth. The experiment used block randomized design with factorial pattern 3 x 3 and 3 replicants. There were two factors that studied. First factor was planting media compotition (K1 = 1 : 3; K2 = 1 : 2; K3 = 1 : 1). Second factor was seprint leaves fertilizer concentrations (S1 = 2 ml/I water; S2 = 3 ml/I water; S3 = 4 ml/I water). The result showed that the best oil palm seedling growth on planting media compotition 1:3 (cow manure : soil). The best result of oil palm seedling growth was sprint leaves fertilizer concentration 2 ml/I water. There was not interaction between planting media compotition and sprint leaves fertilizer concentration on all oil palm seedling growth variables that were studied
Kajian Fraksi Air Terikat Primer, Sekunder dan Tertier dalam Kelapa (Cocos nucifera L.)
No full textStudy of The Primary bound Water Fraction, Secondary and Tertiery in Coconut (Cocos nucifera L.)ABSTRACT. Critical moisture and water activity of coconut (Cocos nucifera L.), were analyzed for the first and second critical points of transition among the primary, secondary and the tertiery bound water fraction in the coconut. It was found out that the first critical points of moisture content and water activity were Mp of 5.22% db and ap of 0.30 respectively. The second ctitical points were water content Ms 12.4% db and water activity as 67% respectively. Coconut sample in the primary bound water fraction (represented by moisture content at 5.22% db), was stable in colour and appearance, but slightly rancid due to molecular mobility of the liquid oil content. The sample in the secondary bound water fraction (represented 12.4% db), has a colour change to darker brown, and in the tertiary bound water fraction (represented 90.5% db), mold growth appeared on the 12 days storage. Coconut indicated and Intermediate Moisture Food (IMF), because limited shelf life for few days at room temperature
Pemanfaatan Kascing untuk Menghambat Pertumbuhan Fusarium oxysporum pada Tanaman Tomat
No full textThe Use of Vermicompost (Kascing) to Inhibit the development of Fusarium oxysporum on Tomato PlantsABSTRACT. Fusarium wilt disease caused by Fusarium oxysporum f. sp. lycopersici is the one of important disease on tomato plant. The use of fungicides can give a negative impact on this environment. Currently, control methods that are environmentally friendly began to be developed again, one of which the use of organic fertilizer vermicompost (kascing). The objective of research was to study effectiveness of kascing to control F. oxysporum on tomato plant. The experiment applied a completely randomized design with 4 replications. The dosage of vermicompost studied consisted of 6 levels, i.e.: 0 g, 50 g, 100 g, 150 g, 200g, and 250 g of vermicompost. The result showed that the dosage of vermicompost significantly affected of incubation period of F. oxysporum f.sp. licopersici, the height of plant oat 30 days after planting (DAT), percentage of the wilt plant, the length of xylem discoloration, and weight of fruits. The best dosage of vermicompost is 150 g polibag-1
Pertumbuhan dan Hasil Beberapa Tanaman Palawija Akibat Sistem Tanam dan Pemupukan N, P, dan K pada Lahan Terkena Tsunami
No full textGrowth and Yield of Same Crop by Cropping System and Fertilization of N, P, K in in Tsunami Affected LandABSTRACT. The aim of study is know the effect of some cropping system and N, P, K fertilizer as well as the interaction of both factors to improve growth and yield maize, green bean, and groundnut. The experimental design was Completely Block Randomized Design with two factors and two replications. The first factor was cropping system: Those were maize monoculture, green bean monoculture, groundnut monoculture, maize-green bean intercropping, and maize-ground nut intercropping. Then the second factor was level of N, P, K fertilizer: Those were control, low dose (90 kg ha-1 N, 35 kg ha-1 P2O5, 20 kg ha-1 K2O) and high dose (180 kg ha-1 N, 70 kg ha-1 P2O5, 40 kg ha-1 K2O). The observation was done for growth and production of maize, green bean and ground nut. The research result showed that, cropping system did not have significant different on the height of maize plant at 15, 30, and 45 days after planting (DAP). Application of fertilizer had significant different on maize plant at 30 and 45 DAP and did not have significant different of maize plant at 15 DAP. Furthermore, cropping system and fertilizer application did not have significant different on the height of green bean and groundnut at 15 DAP, but cropping system and fertilizer application have very significant different on height of green bean and groundnut at 30 and 45 DAP, as well as interaction between cropping system and application fertilizer on height of green bean and groundnut at 30 and 45 DAP. Furthermore, cropping system did not have significant different on cornhusk-maize yield, and application of fertilizer have very significant different on cornhusk-maize yield. Cropping system and application of fertilizer have significant different on yield green bean and groundnut as well as interaction between cropping system and application of fertilizer on yield green bean and groundnut
Kandungan Hara Mikro dalam Pupuk Organik Cair Hasil Proses Pencernaan Anaerobik Limbah Industri Nata De Coco dan Kotoran Sapi serta Pengaruhnya pada Tanaman Selada
No full textMicro Elements in Liquid Organic Fertilizer from Nata de coco Waste and Cow Manure in Aerobic Digester Processing and Its Influence to Lettuce CropABSTRACT. The objective of this experiment are to study micro elements in liquid organic fertilizer and to find optimal interval time of the liquid organic fertilizer application to increase lettuce yield. The experiment is conducted at Physical Chemistry and Environmental Laboratory of IPB and in Jabon Mekar Village, Parung, West Java. The treatment of this experiment is application of liquid fertilizer (organic fertilizer) once (S1), twice (S2), and three time a week (S3) from effluent anaerobic digester 75% nata de coco waste + 25% cow manure (T1), 50% nata de coco waste + 50% cow manure (T2), 25% nata de coco waste + 75% cow manure (T3), and 100% cow manure (T4) compared with control (inorganic fertilizer) on lettuce. The result shows that there are some micro elements in liquid organic fertilizer. The application of liquid organic fertilizer in twice a week in 100% cow manure (T4S2) gives the best lettuce yield (96,587 g)
Implikasi Keberadaan Spesies Invasif Eceng Gondok Terhadap Komunitas Serangga Parasitoid
No full textImplications of the Existance of Invasive Species-Waterhyacinth on Communities of Parasitoid InsectABSTRACT. The introduction of an invasive exotic plant species may influence parasitoid insect community indirectly. The objective of this research is to evaluate the implication of the existence of invasive species-waterhyacinth on parasitoid insect community. The research was done in several fresh water ecosystem occupied by waterhyacinth in west java and DKI Jakarta, conducted during January 2004 to March 2006. Sweep net and yellow pan trap were use to collect the sample of insects. The result of the research showed that the existence of waterhyacinth may indirectly resulted in decreasing species richness and diversity of parasitoid insect. The observation also showed that the existence of waterhyacinth may lead to homogenization of parasitoid insect in aquatic vegetation
Pola Rembesan Air Tanah Gambut pada Model Seepage Tank yang Diberi Drainase Saluran Berpori
No full textPeat Soil Water Intrusion Pattern in the Seepage Tank Model Was Given Drainase Porous ConduitsABSTRACT. Spread peat affected by tidal sea water have in some areas so as to overcome the pool or on the development of an area needs to be given some form of drainage holes in the side walls. The function of the hole in the wall of this channel will be capable of storing water through a hole in to the wall of the channel and dumped back at sea level began to recede. Drainage channel designed an open drainage channel porous trapezoidal shape. The pores are used to store the water into the soil through the hole so it can retain moisture in peat. The aim study is to determine the pattern of ground water seepage on peatland pore into the channel or leave the water seepage discharge channels and to know in order to support the reduction in peat puddles. Pores formed in the drainage channel can retain moisture and ground water due to peat during incoming tide in the channel partially soak into the ground through the pore channels with a trend toward the seepage pattern and left channels respectively y = -0.0061 x2 + 0.3066 x + 4.105 and y= 0.9579 e0,0925x water seepage discharge calculation using Darcys law into the soil when the water toward the channel to the first pair with length of time of 12 hours was 22.663. 10-3 cm3/det and discharge seepage which dihasilkan pada second pair with time to 24 hours of 42,019.10-3 cm3/det. Discharge water seepage into the soil when the water leaving the channel to the first pair at the time of 12 hours is 21,248.10-3 cm3/det and seepage generated at the second pair of 1,249.10-3 cm3/det
Studi Biologi Pleisispa reichi Chap. (Coleoptera: Crhysomelidae) di Laboratorium
No full textBiological Study of Pleisispa reichi Chap. (Coleoptera: Crhysomelidae) in LaboratoryABSTRACT. Pleisispa reichi is a mein pest of coconut in Indonesia. This beetle attacked the young leaves. The objective of this research id to know the biological aspect of this beetle on coconut leaves. This studies were conducted in Laboratory of plant pest and disease, Faculty of Agriculture, North Sumatera level. The result showed that female produced 43.409.86 eggs with hatching 80.776.95%. Larvae had 3 instars with duration 22.800.79 days. The age of pupae 5.300.71 days. While the age of female and male, 70.904.55 and 73.904.55 days, respectively. Copulation occurred when imagoes age 13-14 days. The length and wide size of eggs were 5.900.56 and 1.950.20 mm. The length larvae of instar 1, 2, and 3 were 4.050.37, 6.000.53, and 9.050.55 mm. While the width were 0.950.16, 1.350.24, and 1.850.24 mm. The measure of length and width of pupa were 8.750.49 and 1.800.26 mm. While the length and width size of male was 8.350.58 mm and 1.900.21 mm and the female was 9.750.54 mm and 2.200.26 mm. In life table showed that the net of reproduction rate (Ro) = 11.02. While the intrincic rate of reproduction (r) was 0.070 and Tc was 34.30. It means that the beetle had survival rate was 34.30%
Pengaruh Optimalisasi Bibit dan Pupuk Kandang Ayam Terhadap Pertumbuhan Vegetatif Tanaman Padi Intensifikasi SRI
No full textInfluences of Seedling Optimizations and cock secretion fertilizer on rice plant vegetative growth in the system of rice intensification: SRIABSTRACT. The application or the system of rice intensifications (SRI), including seedling and optimalizations and cock secretion fertilizer (CSF) were done. The treatment aim to know the local production level in heavy wet tropic region. The research was conducted in Limau Manis, aside the campus of Andalas University, from July to December 2005 used var. Cisokan. The spilt plot design was applied in the research. The fertilizers were applied according to the recommended 200kg Urea, 200kg SP-36, 150kg KCl. The research variables are plant growth rate, net assimilation ratio, leaf area index, leaf area ratio, shoot/root ratio, tiller number, water use efficiency, and evaporating/ transpiration ratio. The research conclude that the higher the CSF input, the higher the plant vegetative growth. Besides, there were found no different response of 1 to 2 applied seedling, as well as 7 days to 14 days applied seedling with the input