scholarly journals Pengawet untuk Menjaga Kualitas Bunga Potong Mawar Selama Penyimpanan

2016 ◽  
Vol 21 (3) ◽  
pp. 274
Author(s):  
Dwi Amiarsi ◽  
Rahayu Tejasarwana

Bunga mawar yang dikenal saat ini merupakan hibrida yang berasal dari hasil pemuliaan tanaman selama puluhan tahun. Bunga mawar yang beredar di floris dewasa ini mempunyai variasi bentuk dan warna bunga yang menakjubkan seolah-olah tidak ada habis-habisnya kebaruannya. Varietas mawar Pergiwati dan Pergiwa merupakan salah satu produk nasional yang mempunyai warna menawan, namun sebagai bunga potong daya tahan kesegarannya masih terbatas dan perlu upaya untuk meningkatkan kesegarannya, khususnya dengan penggunaan pengawet. Keuntungan dari larutan pengawet ialah dapat mempertahankan mutu dan memperpanjang kesegaran bunga potong. Penelitian dilakukan pada bulan September 2006 sampai dengan Januari 2007 di Laboratorium Fisiologi Hasil Balai Penelitian Tanaman Hias Pasarminggu. Penelitian bertujuan untuk mendapatkan pengawet yang tepat dalam upaya mempertahankan masa kesegaran bunga mawar potong varietas baru yaitu Pergiwati dan Pergiwa. Penelitian menggunakan dua jenis larutan pengawet, yaitu 2,5% sukrose dengan dan tanpa 100 ppm asam benzoat. Suhu penyimpanan yaitu suhu ruang (27-31oC), 20-23oC, dan 5-10oC. Penelitian dilaksanakan menggunakan rancangan acak lengkap pola faktorial dengan lima ulangan. Hasil penelitian menunjukkan bahwa penggunaan larutan 2,5% sucrose + 100 ppm asam benzoat pada bunga mawar Pergiwati mempunyai masa kesegaran bunga 28 hari bila disimpan pada suhu 5-10oC dengan persentase bunga mekar mencapai 100%. Implementasi hasil penelitian ini dapat dimanfaatkan untuk mengatur suplai bunga potong ke pasar.<br /><br /><br /><br />Rose flower that known this time are origin hybrids of more than 10 years of breeding process. Rose flower available on this time has attractive fine form and color as well as never ending its novelty. Rose varieties such us Pergiwati and Pergiwa generally showed short freshness as a cut flower, therefore to prolong the vaselife, a special treatment should be addressed and application of preservative has potential for this purpose. The advantages of applying preservatives are not only can keep the freshness, but also can maintain flower quality. The research was conducted at Laboratory of Physiological Product of Indonesian Ornamental Crop Research Institute from September 2006 to January 2007. The research objective was to find out the proper preservative combinations to lengthen the freshness of rose cut flower of new varieties i.e. Pergiwati and Pergiwa. Two types of preservative used in the study were 2,5% sucrose with or without 100 ppm benzoic acid. Temperature ranges of flower storage tested in the experiment were 27-31oC, 20-23oC, and 5-10oC. The factorial experiment was arranged in a completely randomized design with five replications. The results showed that using the preservative solution containing 2.5% sucrose + 100 ppm benzoic acid for Pergiwati rose cut flower could prolong the flower freshness up to 28 days at 5-10oC storage with 100% opened-buds. The result implied that the supply of rose cut flower can be regulated through application of the preservative composition.<br /><br />

2017 ◽  
Vol 8 (2) ◽  
pp. 65
Author(s):  
Supriyono Supriyono ◽  
Titiek Yulianti

<p>Salah satu penyakit penting yang sangat merugikan tanaman kenaf adalah penyakit layu Fusarium yang disebabkan oleh <em>Fusarium oxysporum</em> Schlecht. Tujuan penelitian ini adalah untuk mengevaluasi tingkat ketahanan aksesi kenaf terhadap jamur <em>Fusarium oxysporum</em>. Penelitian dilakukan di laboratorium dan rumah kasa Balai Penelitian Tanaman Pemanis dan Serat, Malang menggunakan rancangan acak lengkap) yang diulang tiga kali. Dalam evaluasi ini digunakan 70 aksesi dan 1 aksesi tahan (BG-52-135) yang digunakan sebagai kontrol. Inokulasi dilakukan pada 7 hari setelah tanam (HST) menggunakan suspensi spora dengan kerapatan10<sup>5</sup>/ml sebanyak 100 ml setiap bak. Pengamatan intensitas serangan dilakukan mulai 10–40 hari setelah inokulasi (HSI) dengan interval pengamatan lima hari. Pengamatan persentase diskolorisasi batang dilakukan sekali pada 50 HSI. Hasil pengujian memperoleh 1 aksesi (FJ/017) sangat tahan dengan intensitas serangan terrendah (0,83%) dan 14 aksesi tahan dengan intensitas serangan <span style="text-decoration: underline;">&lt;</span>10%, 28 aksesi dengan ketahanan moderat, dan 27 aksesi yang rentan terhadap infeksi <em>F. oxysporum</em>. Aksesisi FJ/017 (aksesi yang sangat tahan) dan 14 aksesi yang tahan: 1064(SUC/012), 1061(SRB/082), 1035(FJ/005), 839(PARC/2709), 955(FJ/003), 842(PARC/2712), 1095(SUC/003), 838(PARC/2708), 957(FJ/ 007), 1065(SUC/023), 1042(CHN/056), 145(BL/118), 1036(FJ/006), dan 778(PARC/2466) dapat digunakan sebagai sumber ketahanan pada perakitan varietas baru.</p><p> </p><p>One of the important disease that very detrimental to kenaf is Fusarium wilt caused by <em>Fusarium oxysporum</em> Schlecht. The purpose of this study was to evaluate the response of 70 kenaf germplasm<span style="text-decoration: line-through;">s</span> accessions against <em>F</em><em>.</em><em> oxysporum</em>. The study was conducted at the Phytopatology Laboratory and screen house of Indonesian Sweetener and Fiber Crops Research Institute, Malang using completely randomized design with three replicates.  Seventy accessions and one resistant accession as control (1267 (BG-52-135) were used in this study.  Inoculation of <em>Fusarium</em> was done 7 days after sowing (das) by sprinkling 100 ml of spore suspension into the soil.  Observation of disease intensity started at 10–40 days after inoculation (dai) and repeated every five days.  Percentage of stalk discolorization was estimated at 50 dai.  The results showed that accession 1040 (FJ/017) had the lowest disease intensity (0.83%), hence was categorized as a highly resitant accession. Fourteen accessions were categorized as resistant with disease intensity below or equal to 10%; 28 accessions were moderate resistant; and 27 accessions were susceptible.  FJ/017 (the highset resistant accession) and 14 resis-tant accessions (1064(SUC/012), 1061(SRB/082), 1035(FJ/005), 839(PARC/2709), 955(FJ/003), 842(PARC/ 2712), 1095(SUC/003), 838PARC/2708), 957(FJ/007), 1065(SUC/023), 1042(CHN/056), 145(BL/118), 1036 (FJ/006), dan 778(PARC/2466)) could be used as resistant  genetic sources  in developing new varieties.</p>


2019 ◽  
Vol 5 (1) ◽  
pp. 85
Author(s):  
Indah Permata Sari, Laksmi Sulmartiwi, Boedi Setya Rahardja

Abstract This study aims to determine the effect of Nata De Nanno and Nannochloropsis oculata for Brachionus plicatilis population. The research method used was experimental with a Completely Randomized Design (CRD) with six treatments and four replications. The treatments used were: (A) Nata de Nanno 5x109 cells/L N. oculata, (B) Nata de Nanno 4x109 cells/L N. oculata, (C) Nata de Nanno 3x109 cells/L N. oculata, (D) N. oculata 5x109 cells/L, (E) N. oculata 4x109 cells/L and (F) N. oculata 3x109 cells/L. Analysis of data using variant analysis (ANOVA) and to determine the differences between treatments performed tests Distance Regression Duncan. The results showed that administration of Nata De Nanno and Nannochloropsis oculata for Brachionus plicatilis populations exert a significantly different (p<0,05) in each treatment delivery Nata De Nanno and Nannochloropsis oculata with the highest peak population of young B. plicatilis achieved on the fifth day of treatment D (N. oculata) with a concentration of 5x109 cells/L produce a population young B. plicatilis as much as 98,5 individuals/ml. The lowest peak population of young B. plicatilis on the fifth in treatment C (Nata de Nanno) with a concentration of 3x109 cells/L N. oculata 76,75 produce a population of young B. plicatilis 76,75 individuals/ml. Water quality parameters during the study was the temperature ranges between 27-31°C, a salinity of 31 ppt, pH value 7, DO (Dissolved oxygen) ranged between 5-8 mg/L, and ammonia levels ranged from 0-0.25 mg/L.


Author(s):  
Aqsa Ahmad ◽  
Iftikhar Ahmad

Gladiolus (Gladiolus L. hybrids) is a bulbous cut flower, which produces charming spikes on elongated stems. A study was conducted to evaluate the performance of various exotic gladiolus cultivars, viz. ‘Bangladesh’, ‘Essential’, ‘Nova Zambla’ and ‘White Prosperity’ under various irrigation regimes during 2017-2018. Corms were imported from Stoop Flower Bulbs, Holland, transported to laboratory from cold store, and acclimatized at ambient temperature for a week before sowing. Experiment was set up in a polyhouse in plastic crates according to completely randomized design with three replications each having 18 corms planted in a crate. Five irrigation regimes, viz. 5, 10, 15, 20 and 25 days interval, were adopted for all the cultivars under study. Irrigation water was applied until saturation of the soil. Results depicted that gladiolus cultivars ‘Essential’ and ‘Nova Zambla’ produced early flowering with greater stem length, stem fresh and dry weights, leaf area, spike length and number of florets. Best quality flowers were obtained when plants were irrigated at 10 days interval, followed by 15 and 20 days interval, while poor quality stems were produced when plants were irrigated at 5 or 25 days interval, which was either over or under irrigation, respectively. In conclusion, gladiolus cultivars grown at 10 and 15 days irrigation intervals from December to March produced best quality stems and irrigation at 10-15 days interval can be considered as optimal for gladiolus production.


2018 ◽  
Vol 24 (3) ◽  
pp. 248-254 ◽  
Author(s):  
Ariadna Linares Gabriel ◽  
Catalino Jorge López-Collado ◽  
Mario Alejandro Hernández-Chontal ◽  
Joel Velasco-Velasco ◽  
Gustavo López-Romero

The Heliconias have a great potential as a cut flower and for this reason an adequate management of the crop is important. The objective of this research was the application of soil amendments (Biol and superabsorbent polymers - SAP) and the analysis on their effect in the growth of Heliconia psittacorum cv. Tropica. An experiment was established using a completely randomized design with four treatments and five repetitions: SAP (1 g plant-1), biol (20 mL plant-1) + SAP (1 g plant-1), biol (20 mL plant-1) and one control (without application). A 20 cm rhizome was planted per pot and were evaluated the height of the plant, the number of leaves, the leaf area and the number of shoots were measured. The analysis of variance did not show statistical differences (p ≤ 0.05) between treatments for the variables of the height of the plant, the leaf area and the number of shoots, but statistical differences were found for the variable number of leaves (p ≤ 0.05), and the best treatments were Biol, SAP, and Biol + SAP. With the application of the biol and SAP amendments, it was not possible to increase the plant height, the leaf area and the number of Heliconia shoots. Regarding the application of SAP to the not found significant results in Heliconia, it is expected that treatments with SAP show a better effect in the dry season.


2019 ◽  
Vol 4 (1) ◽  
pp. 45
Author(s):  
Iqbal Ghazali, Kismiyati, Gunanti Mahasri

Abstract This study aims to determine the effect of giving Morinda fruit distilation for handling Argulus on Carrasius auratus auratus. The research method that used was experimentally with Completely Randomized Design (CRD) with five treatments and four replications. The used treatment are : medium with Morinda distilation mixed 0% (A), medium with Morinda distilation mixed 2,5% (B), medium with Morinda distilation mixed 3% (C), medium with Morinda distilation mixed 3,5% (D), medium with Morinda distilation mixed 4% (E). The results showed that giving Morinda fruit distillation on Carrasius auratus auratus which have Argulus infest significantly different (p <0.05) with the best treatment in D with six releasing Argulus and that fish can survive within 15 minutes dipping. The lowest treatment result in A (control) with nothing releasing Argulus. Water quality parameters are supporting this research. Supporting parameters measured during the study is the water temperature ranges 27° C, pH 7,5-8,5, DO 8 mg/L to 5 mg/L, and salinity from 0 to 3 ppt. Water quality parameter are still within tolerance limit for Carrasius auratus auratus


2020 ◽  
Vol 7 (2) ◽  
pp. 93
Author(s):  
Khaerati Khaerati ◽  
Gusti Indriati ◽  
Edi Wardiana

<em>The coffee berry borer (CBB) Hypothenemus hampei (Coleoptera: Curculionidae: Scolytinae), is one of the main pests that cause yield losses in coffee plants. This pest directly attacks the coffee berries, both immature and ripe. The entomopathogenic fungi is one of the potential biological agents for CBB, environmentally friendly and does not kill non-target organisms. The study was conducted at the Integrated Laboratory, Industrial and Beverage Crop Research Institute, from June to October 2018. The aim of this study was to examine the effectiveness of bioinsecticide based on entomopathogenic fungus of Talaromyces pinophilus (EFTP) and vegetable oil on CBB. The completely randomized design with 31 treatments and 3 replications was used in this study. The 31<sup>th</sup> of treatments consisted of 9 formulas of bioinsecticide based on EFTP and vegetable oil, control-positive (bioinsecticide based on EFTP and water), and control- negative (Klorpirifos insecticide). Variables observed were the activities of EFTP enzyme, effectiveness of vegetable oil as a carrier material, mortality of CBB beetles, percentage of CBB attacks, percentage of hollow berries, and number of holes per 10 coffee berries. Results showed that the formula of bioinsecticide based on EFTP produce the chitinase and protease enzymes which were potential as biological agents to control CBB in vitro. Soybean oil is the most effective as a carrier material in formulating EFTP. The formula of S69MK30 and S79MK20 in concentration of 7.50% respectively have the highest potential as biological agents to control CBB. Other potential formula is S69MKT30 in concentration of 7.50%.</em>


2020 ◽  
Vol 19 (1) ◽  
Author(s):  
Ayu Kurniati ◽  
Agustiansyah Agustiansyah ◽  
Yayuk Nurmiaty ◽  
Ermawati Ermawati

This study aims to determine the best seed quality from fifteen lots of soybean seeds that are stored for up to six months using pepper powder and without using pepper powder. The treatment was applied in a Completely Randomized Design (CRD) which was repeated three times. The combination of treatments derived from three varieties, namely Anjasmoro, Gerobogan, and Burangrang combined with 5 SP-36 fertilizer doses, namely 0, 100, 150, 200, and 250 kg / ha. The experiment consisted of two experiments. Experiment 1, the fifteen lots of seeds were stored without pepper powder. Experiment 2, the fifteen lots of seeds were ground with pepper in their storage. Storage at room temperature ranges from 28-30oC in the Seed and Plant Breeding Laboratory, Faculty of Agriculture, University of Lampung in October 2017 to April 2018 The results showed that the combination treatment of Burangrang varieties with SP-36 250 kg / ha fertilizer stored without pepper powder or pepper powder was able to maintain its higher quality compared to other treatment combinations after being stored for up to six months Key words: Fertilizer, pepper powder, soybean, storage, variety


Akta Agrosia ◽  
2021 ◽  
Vol 24 (1) ◽  
pp. 1-8
Author(s):  
Nurrobifahmi Nurrobifahmi ◽  
Anggi Nico Flatian ◽  
Taufiq Bachtiar ◽  
Ania Citraresmini ◽  
Muftia Hanani ◽  
...  

Sidenuk rice is a superior rice variety produced by BATAN through a radiation mutation technique.             The new varieties that have been produced need to be supported by efforts to optimize production through fertilization technology. The purpose of this study was to determine the effect of organic fertilizer which can increase growth, production and reduce the use of urea fertilizer in lowland rice optimally. The study was conducted using a completely randomized design. Each was repeated 4 times so that the total experimental unit (pot) was 32 rice pots. The treatments include (1) Control (without urea fertilizer),              (2) Control (+) 100% urea, (3) 50% urea, (4) Local microorganisms (MOL), (5) Compost, (6) Biochar , (7) Azolla, (8) Mol + Compost + Biochar + Azola + SP 36 and KCl. The results showed that the highest grain weight was found in the 100% urea treatment, which was 43.97 g plant-1. MKBA treatment    (MOL fertilizer, compost, biochar, azolla) showed values that were not significantly different from 100% urea treatment. Organic fertilizer formula (MOL fertilizer, compost, biochar, azolla) can reduce the use of urea fertilizer by 50%.


2017 ◽  
Vol 66 (3) ◽  
pp. 373-377
Author(s):  
Juan Manuel Loeza-Corte ◽  
Ernesto Díaz-López

Calla (Zantedeschia aethiopica (L.) K. Spreng), is a cut flower which had obtained importance in recent years, but postharvest handling is limited. Thus, in order to know the fluorescein concentration effect and pH of pulse solution on inflorescences calla postharvest, were evaluated in Teotitlan de Flores Magon, Oaxaca-Mexico, four fluorescein concentrations (0, 20, 40 and 60 %, respectively) and two pH levels (acid and alkaline) in a completely randomized design with factorial arrangement, having a total of 24 experimental units, which was established by vase life and calla inflorescence with white spathe color, immersed in a fluorescein solution adjusted as appropriate at acidic or alkaline pH, where response variables were as follows: vase life, water consumption, stem diameter, absorption fluorescein stem base and fluorescein vertical absorption by floral scape. Results indicates the increased vase life is achieved at alkaline pH by fluorescein addition of 20, 40 and 60 %, respectively. Likewise, the higher water consumption is achieved at this pH. From this research, we can conclude fluorescein can affect the calla physiology for increasing vase life.


Jurnal Agrium ◽  
2018 ◽  
Vol 15 (1) ◽  
pp. 8
Author(s):  
Giska Oktabriana

The purpose of this research is to investigate the impact of application of manure on soybean yield on cocopeat and in order to get the appropriate dose for the soybean crop. Research was done using Completely Randomized Design (CRD) which consists of 4 treatments and 3 replications. There are 12 unit of experiments with composition: A = control (without fertilizer), B = cocopeat + 100 g manure / polybag and C = cocopeat + 200 g manure / polybag, cocopeat + 300 g manure / polybag. The research revealed that the application of manure can increase the soybean yield on cocopeat


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