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Yefta Pamandungan
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Study Of The Effectiveness Of Several Preservative Solutions On The Vase Life Of Cut Chrysanthemum Flowers (Chrysanthemum morifolium) var. Jayanti Charissa Maria Simbawa; Langimanapa S. Demmassabu; Meity R. Rantung; Johannes E. X. Rogi; Bertje R. A. Sumayku; Yefta Pamandungan
Jurnal Agroekoteknologi Terapan Vol. 4 No. 2 (2023): EDISI JULI-DESEMBER 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/jat.v4i2.48713

Abstract

This study aims to examine several preservative solutions for the vase life of cut flowers of chrysanthemum var. Jayanti. This research was conducted from January 2023 to February 2023 in the Wanea Urban Village, Wanea District, Manado City. This study used a completely randomized design (CRD) with 4 treatments of total, L1 (25 g/L Sugar + 1 mL/L Lime Juice + 1 mL/L Chlorox), L2 (40% Coconut Water + 25 g Sugar /L + Vinegar 0.4 mL/L + Chlorox 1 mL/L), L3 (25 g/L Sugar + 0.15 g/L Citric Acid + 250 g/L Basil Leaf Extract), and L4 (Coconut Water 40% + Saguer Vinegar 0.5 m/L + Betel Leaf Extract 250 g/L). Every treatment was repeated six times so that it would have 24 experimental units. In each of the experimental units, there are two samples, making a total of 48 units. Observational data were analyzed using Analysis of Variance (ANOVA) and continued with the Least Significant Different (LSD) test at the 5% level. The results showed that the composition of a solution of Sugar 25 g/L + Lime Juice 1 mL/L + Chlorox 1 mL/L was the most effective solution in maintaining the vase life of cut flowers of chrysanthemum var. Jayanti for 19,7 days. The composition of the best preservative solution with the addition of natural ingredients was obtained from the treatment of Sugar 25 g/L + Citric Acid 0.15 g/L + Basil Leaf Extract 250 g/L which could maintain the vase life of cut flowers of chrysanthemum var. Jayanti for 10,25 days. Keywords: Preservative Solutions, Cut Flowers, Chrysanthemum. Abstrak Penelitian ini bertujuan untuk mengkaji beberapa larutan pengawet untuk masa pajang bunga potong krisan var. Jayanti. Penelitian ini dilaksanakan pada bulan Januari 2023 sampai Februari 2023 di Kelurahan Wanea, Kecamatan Wanea, Kota Manado. Penelitian ini menggunakan metode Rancangan Acak Lengkap (RAL) dengan 4 perlakuan yaitu, L1 (Gula Pasir 25 g/L + Air Jeruk Nipis 1 mL/L + Chlorox 1 mL/L), L2 (Air Kelapa 40% + Gula Pasir 25 g/L + Cuka 0,4 mL/L + Chlorox 1 mL/L), L3 (Gula Pasir 25 g/L + Asam Sitrat 0,15 g/L + Ekstrak Daun Kemangi 250 g/L), dan L4 (Air Kelapa 40% + Cuka Saguer 0,5 m/L + Ekstrak Daun Sirih 250 g/L). Setiap perlakuan diulang sebanyak 6 kali sehingga akan didapatkan 24 satuan percobaan. Dalam setiap satuan percobaan terdapat 2 sampel, sehingga total keseluruhan terdapat 48 unit percobaan. Data hasil pengamatan dianalisis dengan menggunakan Analisis Ragam (ANOVA) dan dilanjutkan dengan uji BNT pada taraf 5%. Hasil penelitian menunjukkan bahwa komposisi larutan Gula Pasir 25 g/L + Air Jeruk Nipis 1 mL/L + Chlorox 1 mL/L merupakan larutan yang paling efektif dalam mempertahankan masa pajang bunga potong krisan var. Jayanti selama 19,7 hari. Komposisi larutan pengawet dengan penambahan bahan alami terbaik didapatkan pada perlakuan Gula Pasir 25 g/L + Asam Sitrat 0,15 g/L + Ekstrak Daun Kemangi 250 g/L yang dapat mempertahankan masa pajang bunga potong krisan var. Jayanti selama 10,25 hari. Kata Kunci: Larutan Pengawet, Bunga Potong, Krisan
PERTUMBUHAN DAN PRODUKSI TANAMAN PADI DENGAN METODE SRI (SYSTEM OF RICE INTENSIFICATION) PADA BERBAGAI UMUR PINDAH TANAM BIBIT Rifaine M.N. Erungan; Johannes E.X. Rogi; Marjam Toding; Yefta Pamandungan
COCOS Vol. 6 No. 10 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i10.8233

Abstract

ABSTRACT   This research aims to determine the effect of age on the growth and transplanting rice production by using the system of planting methods SRI ( System of Rice Intencification ) carried out in the village of Sulu District of Tatapaan for 4 months from May to September 2014. The research used randomized block design with treatment age transplanting U1 ( 0 HSS ) , U2 ( 10 HSS ) , U3 ( 15 HSS ) . Data were analyzed using the F test and continued with Least Significant Difference test level of 5 % .  Broadcaster age transplanting significant effect on plant height and number of tillers , and no real effect on the number of productive tillers , dry grain harvest weight , 1000 grain weight , the weight of milled rice per plot , weight of dry milled grain per plant , and productivity .  The treatment gives the best results in the production of which is the U3 treatment with seedling transplanting age 15 HSS . Keywoards : transplanting age, SRI method, rice
KARAKTERISASI PALA SIAU (Myristica fragrans Houtt) BERDASARKAN MORFOLOGI BUAH CHARACTERIZATION OF SIAU NUTMEG (Myristica fragrans Houtt) BASED ON MORPHOLOGY FRUIT Seistelin Horonis1), Semuel Runtunuwu2), dan Yefta Pamandungan3) FAKULTAS PERTANIAN, UNIVERS Seistelin Horonis; Semuel Runtunuwu; Yefta Pamandungan
COCOS Vol. 7 No. 7 (2016)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v7i7.13931

Abstract

ABSTRACTThe study aims to characterize nutmeg in Siau island based on morphology fruit. The study was conducted using survey method directly at the local farmers plantation area. This study was car was one village selected from each district as a research location. Having determined the locations, the sample trees were selected. The trees were more than forty years old, healthy growth and ready to be harvested. Then, the observation on morfological fruits was made on the selected samples. The observation was made based on the tropical fruit descriptor standard (IBPGRI, 1980) with the following variables: 1) fruit shape, 2) rind color, 3) seed shape, 4) seed color, 5) mace color. The result shows that 1) fruit and seed shaped were varied in each location (six districts). 2) a variety fruit color were found in Kanawong village, West Siau district. 3) seed color varied in all districts. 4) variety mace color are found in Deahe village, East Siau district.Key words : Nutmeg crop, characterization,Siau.
KARAKTERISASI TANAMAN JAGUNG UNGU F1 HASIL BERSARI BEBAS JAGUNG MANADO KUNING DENGAN JAGUNG UNGU Oksandi Darius Tumei; Marjam Toding; Yefta Pamandungan
COCOS Vol. 10 No. 2 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i4.22097

Abstract

ABSTRACT  This research aims to study the characteristic of the growth components of purple cornF1resulted from open pollinated between Yellow Manadocornandpurplecorn. Research carried out invillages ofKalasey 2,Mandolangsub-district,Minahasa regency, Province of North Sulawesi during 4 months from June toSeptember 2017.This research was arranged to describe the growthand yield characteristics of purple corn. Seed source used as the treatmentsis:U1 = The seed of purple corn from the fries ear, U2 = The seed of purple corn from the second ear, U3 = The Seed of purple corn from the third ear, U4 = The seed coof purple corn from the fourth ear, U5 = The seed of purple corn from the fifth ear.The results showed that the components of highplant andheight of ear position  plant height the highest is obtained from treatment U5 in contrast to the components in the diameter of the stem to be obtained from the U2 treatment being handed out. The coefficiency of variance of the growth and yield components showed low (less than 25%).  Keywords : corn characterization, purple corn
Effect Of Combination Of Ms Media And Growth Regulator Bap On Growth And Development Of Dendrobium mirbelianum Gaudich. Orchid Shoots In Vitro Varyanti Magdalena Turang; Wenny Tilaar; Jantje Pongoh; Semuel David Runtunuwu; Stella Maria Theresia Tulung; Yefta Pamandungan
Jurnal Agroekoteknologi Terapan Vol. 4 No. 2 (2023): EDISI JULI-DESEMBER 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/jat.v4i2.49386

Abstract

Generative propagation of orchids is difficult because orchid seeds do not have endosperm for growth and development, so propagation can be done by in vitro. The growth and development of orchids in vitro can be faster and more efficient compared to conventional methods when combined with the addition of growth regulators into the growing medium of in vitro cultures. MS media is a medium that is often used in in vitro propagation because it has the most complete macro and micro nutrients for plant growth and development, but because the price is fairly expensive, the use of 50% MS media can be a solution to this problem.               This study aims to determine the interaction of the use of MS media composition with ZPT BAP, see the effect of MS media composition on the growth and development of orchid buds, and see the effect of ZPT BAP on the growth and development of orchid buds. This research was conducted at the Biotechnology Laboratory, Faculty of Agriculture, Sam Ratulangi University Manado from March to May 2023. This study used a factorial experiment in a completely randomized design (CRD) with 3 replicates consisting of two factors.. The first factor is MS media composition; MS 100% (A1) and MS 50% (A2) and the second factor is BAP concentration; BAP 0.5 ppm (B1), BAP 1.5 ppm (B2), BAP 2 ppm (B3), and BAP 3 ppm (B4). Data were analyzed by ANOVA and if the effect was significant then continued with 5% BNT test. The variables observed were: Shoot height (cm), number of leaves (strands), number of shoots (units), number of roots (units), and wet weight (g). The results showed that there was an interaction between the treatment of MS media composition and growth regulators on the number of shoots, but there was no interaction on the variable shoot height, number of leaves, number of roots, and wet weight of Dendrobium mirbelianum Gaudich orchid shoots. Keywords: Orchid, Dendrobium mirbelianum, MS media, ZPT BAP, In vitro. Abstrak Perbanyakan anggrek secara generatif sulit dilakukan karena biji anggrek tidak memiliki endosperm untuk pertumbuhan dan perkembangannya, maka dari itu dapat dilakukan perbanyakan dengan cara in vitro. Pertumbuhan dan perkembangan anggrek secara in vitro bisa lebih cepat dan efisien dibandingkan dengan cara konvensional jika dikombinasikan dengan penambahan zat pengatur tumbuh ke dalam media tanam kultur in vitro. Media MS adalah media yang sering digunakan dalam perbanyakan in vitro karena memiliki unsur hara makro dan mikro yang paling lengkap untuk pertumbuhan dan perkembangan tanaman, tetapi karena harganya yang terbilang mahal maka penggunaan media MS 50% dapat menjadi solusi terhadap permasalahan tersebut. Penelitian ini bertujuan untuk mengetahui interaksi penggunaan komposisi media MS dengan ZPT BAP dan mendapatkan kombinasi perlakuan yang paling baik terhadap pertumbuhan dan perkembangan tunas anggrek. Penelitian ini dilaksanakan di Laboratorium Bioteknologi, Fakultas Pertanian, Universitas Sam Ratulangi Manado dari bulan Maret sampai Mei 2023. Penelitian ini menggunakan percobaan faktorial dalam Rancangan Acak Lengkap (RAL)  dengan 3 ulangan yang terdiri dari dua faktor. Faktor pertama yaitu komposisi media MS; MS 100% (A1) dan MS 50% (A2) dan faktor kedua konsentrasi BAP; BAP 0,5 ppm (B1), BAP 1,5 ppm (B2), BAP 2 ppm (B3), dan BAP 3 ppm (B4). Data dianalisis dengan ANOVA dan jika berpengaruh nyata maka dilanjutkan dengan uji BNT 5 %. Variabel yang diamati adalah: Tinggi tunas (cm), jumlah daun (helai), jumlah tunas (unit), jumlah akar (unit), dan berat basah (g). Hasil penelitian menunjukkan bahwa terdapat interaksi antara perlakuan komposisi media MS dan zat pengatur tumbuh terhadap jumlah tunas, tetapi tidak terdapat interaksi pada variabel tinggi tunas, jumlah daun, jumlah akar, dan berat basah tunas anggrek Dendrobium mirbelianum Gaudich. Kata Kunci: Anggrek, Dendrobium mirbelianum, media MS, ZPT BAP, In vitro
Co-Authors Bertje R. A. Sumayku Charissa Maria Simbawa Jantje Pongoh Johannes E. X. Rogi Langimanapa S. Demmassabu Marjam Toding Meity R. Rantung Oksandi Darius Tumei Rifaine M.N. Erungan Seistelin Horonis Semuel David Runtunuwu Semuel Runtunuwu Stella Maria Theresia Tulung Varyanti Magdalena Turang Wenny Tilaar