Jurnal Agro Industri Perkebunan
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Pengaruh Pupuk Majemuk Tablet pada Pertumbuhan Bibit Kakao (Theobroma cacao L.)
Get PDFCocoa (Theobroma cacao L.) is one of the estate crop commodities that is currently being developed because the cocoa plant is one of the export commodities that produce a lot of foreign exchange and has a role as high value sector besides oil and gas. Cocoa farming can increase the income of cocoa farmers, create and expand employment. This experiment used Randomized Block Design (RBD) which consisted of 4 treatments that was repeated 6 times (control, 1 tablet.polybag-1, 2 tablet.polybag-1, 3 tablet.polybag-1). This study was conducted to determine the best rate of compound fertilizer tablets for cocoa seedlings growth. The data obtained were analyzed by analysis of variance at 95% accuracy level. The results showed that there was a compound effect on the growth of cocoa seedlings to the variable of seed height, stem diameter, leaf number, leaf area, dry root weight, and total dry weight of stalk. Application of tablet compound fertilizer 1 tablet.polybag-1 gives the best results on the growth of cocoa seedlings.    Keywords: cocoa seedlings growth, inorganic fertilizer, tablet compound fertilizerPermalink: http://jurnal.polinela.ac.id/index.php/AIP/article/view/64
Pengaruh Lama Penyimpanan dan Konsentrasi Aplikasi Ekstrak Biji Mahoni Hasil Fermentasi terhadap Efektivitasnya
Get PDFArmyworm (Spodoptera litura F.) as a polyfagous insect is a key pest of either food crops or estate crops. The larva often attack leaves of beans, cereal, shallot, cabbage, cotton, tobacco, and sugarcane. Synthetic insecticides are usually used 2 – 3 times a week in order to manage this insect. The use of synthetic insecticides need high cost, have negative impacts such as insect resistance and resurgence, killing non-target insects, residual effects on yield, and environmental contamination and pollution. Botanical insecticide has a highly potential to be used in IPM because of its characteristics (no residual effect, cheap, easy to get and easy to apply). Mahogany seeds contain alkaloid, saponin, and flavonoid that have good insecticide activity. Extract of mahogany seeds can be used as insecticide, anti-feedant, growth retardant, and fertile retardant. The effectivity of mahogany seed extracts is affected by storage time and its concentration. The results of the experiment are the extract of mahogany seeds can be stored up to 3 weeks, and the highest effective is reached by the concentration of 20%, followed by 10% - 15% concentration as moderately effective.  Keywords: botanical insecticides, extract, mahogany seedPermalink: http://jurnal.polinela.ac.id/index.php/AIP/article/view/65
Pengaruh Ekstrak Rimpang Alang-alang (Imperata cylindrica L.) pada Bobot Kering dan Persen Penutupan Gulma
Get PDFThe use of herbicides has a negative impact on the environment so an environmentally friendly herbicide is needed. Alang-alang that are available in almost every area has a content of tannins in the form of allelopathy potential for weed control. The objective of the research is to know the percent of weed coverage due to the application of alang-alang bioherbicide.Concentration levels were tested in this research are: 5%, 10%, 15%, and 20%. The research was arranged in a randomized block design that has five replication. Variables observed were the dry weight of weeds and percent of weed coverage. The results of this research showed that all various concentrations have not affected in controlling weeds and percent of weed coverage. Keywords: allelopathy, bioherbicide, weed contro
Pertumbuhan Bibit Kelapa Sawit dengan Aplikasi Fungi Mikoriza Arbuskular dan Beberapa Dosis Pupuk Fosfat
Get PDFFarmer dependence on inorganic fertilizers drives the inclination of the fertilizer price which in turn influence the production cost. Therefore, it is necessary to find alternative way to reduce the consumption of inorganic fertilizers. This study aims to determine the most suitable arbuscular mycorrhiza fungi (AMF) for oil palm seedlings, determining the best dosage of phosphate fertilizer for the growth of oil palm seedlings, and determine whether the growth response of oil palm seedlings to AMF inoculation is influenced by the dosage of P fertilizer given. Research had been conducted in the greenhouse and Plantation Production Laboratory, Faculty of Agriculture, University of Lampung from June 2012 until August 2013. The treatment design used was a factorial design and the experimental design used was a completely randomized block design. The first factor was AMF treatment i.e. control, Entrophospora sp. mv 3 isolate, Glomus sp. mv 9 isolate, Glomus sp. mv 10 isolate, and Glomus sp. mv 15 isolate. The second factor was the dosage of P fertilizer i.e. 23,32 g, 15,66 g, and 11,66 g per plant. Each treatment was repeated 4 times. The results showed that Glomus sp. mv 15 isolate was the most suitable type of AMF for oil palm seedlings. All dosages of P fertilizer tested showed no growth effect on oil palm seedlings and the growth response of oil palm seedlings to inoculation of AMF was not affected by dosage of P fertilizer. Keywords: Entrophospora, Glomus, mycorrhiza, oil palm, phosphat
Upaya Mengatasi Cekaman Kekeringan pada Tanaman Nilam (Pogostemon cablin Benth.) dengan Memanfaatkan Kompos Kiambang
Get PDFProductivity and quality of patchouli is influenced by environmental factors especially drought stress. This study aim is to determine application of giant salvinia compost for resolving drought stress on patchouli. This study used a randomized block design and experiment with three replication arranged in factorial 3x4. The first factor is percentage of drought stress 0% (L0), 40% (L1), and 80% (L2). The second factor is application of giant salvinia compost, topsoil 100% (G0), topsoil and giant salvinia compost 1:1 (G1), topsoil and giant salvinia compost 2:1 (G2), and topsoil and giant salvinia compost 3:1 (G3). The result showed that giant salvinia affected increasing on plant height, number of branch, the ratio of root-shoot dry weight, and patchouli oil content.  Keywords: growth medium, patchouli oil content, soil moistur
Pengaruh Konsentrasi dan Lama Fermentasi Urin Sapi sebagai Pupuk Cair pada Pertumbuhan Bibit Karet (Hevea brasiliensis Muell. Arg.)
Get PDFThe aims of this research is to get the best concentration of cow urine as liquid organic fertilizer on rubber seed growth, to get the best fermentation time for cow urine as liquid organic fertilizer on the growth of rubber seedlings, and get the best interaction between concentration and cow urine fermentation as liquid organic fertilizer on the growth of rubber seedlings. The experiment was conducted in teaching farm of State Polytechnic of Lampung from January 2016 until June 2016. The treatments arranged in Randomized Block Design (RBD) with the factorial pattern consisting of two factors. The first factor was the concentration of cow urine, consisting of four levels: 15 cc.l-1, 30 cc.l-1, 45 cc.l-1 and 60 cc.l-1. The second factor was the duration of cow urine fermentation, consisting of five levels: 0 day, 7 day, 14 day, 21 day and 28 day. Rubber seedlings were used as plant indicator. Observations included plant height, number of petiole, stem diameter, stem girth, and dry weight of biomass. The results showed that the treatment of cow urine concentration had significant effect on plant height and number of petiole, but very significant effect on stem diameter, stem girth and dry weight of biomass. Likewise, the treatment of cow urine fermentation has significant effect on all observed variables except on the dry weight of biomass has a very significant effect. The interaction between treatment of cow urine concentration and cow urine fermentation did not significantly affect all variables except on dry weight of biomass had significant effect, i.e. cow urine concentration treatment of 45 cc.l-1 and fermentation of cow urine for 28 days resulted in dry weight of biomass higher rubber seedlings.  Keywords: cow urine, fermentation, rubber seedlingsPermalink: http://jurnal.polinela.ac.id/index.php/AIP/article/view/65
Respons Pertumbuhan Lada Perdu terhadap Pemberian Dosis Pupuk Kandang Sapi dan Mikoriza
Get PDFShrub pepper is a potential commodity to be cultivated under coconut trees of coastal sand. The problems are coastal sand generally not support plant to grow well, because of low of nutrition, organic matter, water holding capacity, soil fertility and high salinity. The aims of the research were to study the effect of mycorrhiza and cow manure doses on vegetatif growth of shrub pepper, and to study interaction between mycorrhiza and cow manure doses effect on vegetatif growth of shrub pepper. This experiment used Factorial Randomized Complete Blocks Design (RCBD) which consist 2 factors, first factor was doses of cow manure (P1= 5 kg.crop-1), (P2= 10 kg.crop-1) and (P3= 15 kg.crop-1). Second factor was doses of mycorrhiza (M0= without mycorrhiza/control), (M1= mycorrhiza 10 spore.crop-1) and (M2= mycorrhiza 20 spore.crop-1). Data obtained were analyzed with F test, and were continued with DMRT at 5 percent when significant. Results showed that mycorrhiza doses not affected the addition  number of leaves, internodes and laterals, this can be explained there was endogenous mycorrhiza in the soil used based on colonization of mycorrhiza test (M0 21,07%; M1 23,84% and M2 16, 73%). The effect of cow manure doses to addition number of leaves, internodes and laterals gave the same response, it’s caused all cow manure doses can supply nutrition for vegetative growth of shrub pepper based on the content of chlorophyl (P1 89,20; P2 77,76 and P3 80,94 mg.l-1). There was no interaction between mycorrhiza and cow manure doses on  all of observed variables.  Keywords: Coastal sand, coconut, colonization, pepper, vegetativ
Pengaruh Pupuk Organik Padat dan Varietas pada Produktivitas Tebu (Saccharum officinarum L.)
Get PDFSugarcane is one of the main sugar-producing commodities in Indonesia. The one of the efforts to increase the production and yield of sugarcane can be done by fertilization using organic fertilizer and the use of improved varieties. The aim of this research are to get optimal rate of solid organic fertilizer, the best sugarcane variety, and interaction between solid organic fertilizer rate and variety on productivity of sugarcane. The study was conducted in December 2015 until December 2016 at Teaching Farm and Chemical Analysis Laboratory, State P olytechnic of Lampung. The research used Factorial Random Block Design method, with two factors. The first factor is the rate of solid organic fertilizer (Control, 1.000 kg.ha-1, 1.500 kg.ha-1, and 2.000 kg.ha-1), whereas the second factor is sugarcane varieties (GMP 3, GMP 19, and SS 57). The data of the research were analyzed by analysis of variance and  if the result was significantly different then continued by using LSD test of 5% level. The results showed that there was interaction between the use of solid organic fertilizer 1000 kg.ha-1 and GMP 3 varieties on variable length of sugarcane stem. The productivity of sugarcane crops can be improved by the application of 1000 kg.ha-1 solid organic fertilizer which influences the variables of sugarcane quantity per lube and the number of sugarcane segments. The best variety that can be used to increase the productivity of sugarcane is GMP 3.Keywords: solid organic fertilizer, sugarcane productivity, sugarcane varietie
Respons Bibit Bud Chips Batang Atas, Tengah, dan Bawah Tebu (Saccharum officinarum L.) terhadap Aplikasi Dosis Mulsa Bagasse
Get PDFThere are many benefits of sugarcane (Saccharum officinarum L.) as a sugar source to fulfil human staples food. The use of sugarcane bud chips is one of cultivation technology in order to achieve national sugar self-sufficiency program. Bagasse mulch kept soil moisture and increased organic matter in the soil thathas positive impact on sugarcne growth. The experiment was conducted in Teaching Farm of the State Polytechnic of Lampung, from November 2015 until April 2016. The experiment used Randomized Block Design (RBD) in factorial pattern, consisting of two factors. The first factor is the treatment of bud chips position consisting of 3 levels i.e. top bud chip, middle bud chip, and bottom bud chips. The second factor is the bagasse mulch treatment consisting of 4 levels i.e. control, 3 ton.ha-1, 6 ton.ha-1, and 9 ton.ha-1. The objectives of the study were to obtain optimal growth among bud chips, optimal bagasse mulch, and to know the interaction between the bud chips position and the bagasse treatments. The results showed that the top bud chips were better than middle bud chips and bottom bud chips. The optimal rate of bagasse mulch was 3 ton.ha-1. There was an interaction between the treatment of sugarcane bud chips and mulch bagasse on leaf length and soil moisture growth.  Keywords: bagasse mulch, bud chips, sugarcane seedlingsPermalink: http://jurnal.polinela.ac.id/index.php/AIP/article/view/64
Pengaruh Waktu Perendaman dan Konsentrasi Giberelin (GA3) pada Pertumbuhan Benih Cemara Laut (Casuarina equisetifolia L.)
Get PDFGibberellin (GA3) is a natural growth hormone and synthesis used to break dormancy and accelerate germination and growth processes. The purpose of this study is to determine the effect of gibberellin concentration (GA3), soaking duration, and the interaction between gibberellin concentration (GA3) and soaking duration on the growth of australian pine tree seed. The research was conducted in State Polytechnic of Lampung from October 2015 to February 2016. This research used Factorial Randomized Block Design (RBD). The first factor is the concentration of gibberellin (GA3) namely A0 (without GA3), A1 (1000 mg.l-1 GA3), A2 (1250 mg.l-1 GA3), and A3 (1500 mg.l-1 GA3). The second factor is the soaking duration of GA3 namely B1 (soaking for 3 hours), B2 (soaking for 6 hours), and B3 (soaking for 9 hours). The result showed that GA3 at concentration 1500 mg.l-1 increased germination, the percentage of germinated seeds, hypocotyl diameter, hypocotyl length, growth homogenity, and vigor of australian pine tree seed. Soaking duration for 9 hours can increase germination, the percentage of germinated seeds, hypocotyl diameter, hypocotyl length, growth homogeneity, and australian pine tree seed vigor. The interaction between GA3 concentration at 1500 mg.l-1 and the soaking duration for 9 hours increased the germination, the percentage of germinated seeds, hypocotyl diameter, hypocotyl length, growth homogeneity, and australian pine tree seed vigor.  Keywords: Casuarina equisetifolia L., gibberelin, seed vigor, soaking durationPermalink: http://jurnal.polinela.ac.id/index.php/AIP/article/view/64