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Selvie Tumbelaka
Sam Ratulangi University
Agriculture, Biological Sciences & Forestry Environmental Science

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THE EFFECT OF CONCENTRATION AND DURATION OF SOAKING SHALLOT BARK SOLUTION ON ROOT FORMATION OF CUTTINGS OF CHRYSANTHEMUM KULO (Chryshanthemum sp.) IN TOMOHON CITY MARTHA FERA DELLASTRADA GARING; Adeleyda M. W. Lumingkewas; Selvie Tumbelaka
Jurnal Agroekoteknologi Terapan Vol. 2 No. 2 (2021): EDISI JULI-DESEMBER 2021
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/jat.v2i2.35295

Abstract

Chrysanthemum kulo plant is a variety native to The City of Tomohon which has a high aesthetic and economic value. Good quality chrysanthemum plant seeds can be obtained through vegetative multiplication techniques. One of the vegetative multiplication techniques is cuttings. The problem with the propagation of cuttings is that the rooting is less dense, so it can not hold the plant to grow upright. One source of natural growing regulators that can support the formation of roots is shallot bark. Shallot bark contains ABA, IAA, GA, Cytokinin. The purpose of this study was to study the interaction between concentration and length of soaking of shallot bark solution against the formation of cuttings root chrysanthemum shoots. This research was conducted in March 2021 until May 2021 at Screen House, Nursery, And Agrowidya Seeding Center of Tomohon City Tourism, Agriculture and Fisheries Office of Tomohon City.  The design used is a Complete Randomized Design (RAL) Factorial with two factors, namely the first factor of concentration of shallot bark solution (K) consisting of 5 levels of 0%, 25%, 50%, 75%, 100% and the second factor soaking the shallot bark solution (T) consisting of 3 levels of 10 minutes, 20 minutes, 30 minutes. The variables measured are the percentage of root formation (%), the number of roots, and the length of the root (cm). Keywords: Chrysanthemum plants; Cuttings; Roots; Concentration, Shallot Bark.AbstrakTanaman krisan kulo merupakan varietas asli dari Kota Tomohon yang memiliki nilai estetika dan ekonomis yang tinggi. Bibit tanaman krisan yang berkualitas baik dapat diperoleh melalui teknik  perbanyakan secara vegetatif. Salah satu teknik perbanyakan secara vegetatif ialah stek. Masalah pada perbanyakan stek yaitu perakaran yang kurang lebat, sehingga tidak dapat menahan tanaman untuk tumbuh dengan tegak. Salah satu sumber zat pengatur tumbuh alami yang dapat mendukung pembentukan akar adalah kulit bawang merah. Kulit bawang merah mengandung ABA, IAA, GA, Sitokinin. Tujuan dari penelitian ini adalah untuk mempelajari interaksi antara konsentrasi dan lama perendaman larutan kulit bawang merah terhadap pembentukan akar stek pucuk tanaman krisan. Penelitian ini dilaksanakan pada bulan Maret 2021 sampai bulan Mei 2021 di Screen House, Balai Perbenihan Pembibitan dan Agrowidya Wisata Kota Tomohon, Dinas Pertanian dan Perikanan Kota Tomohon. Rancangan yang digunakan adalah Rancangan Acak Lengkap (RAL) Faktorial dengan dua faktor yaitu pertama faktor konsentrasi larutan kulit bawang merah (K) yang terdiri dari 5 taraf  0%, 25%, 50%, 75%, 100% dan faktor yang kedua lama perendaman larutan kulit bawang merah (T) yang terdiri dari 3 taraf yaitu 10 menit, 20 menit, 30 menit. Variabel yang diukur adalah persentase pembentukan akar (%), jumlah akar, dan panjang akar (cm).Kata Kunci:  Tanaman krisan; Stek; Akar; Konsentrasi; Kulit Bawang Merah.
THE USE OF THE FUNGUS Metarhizium rileyi F. IN THE CONTROL OF Crocidolomia pavonana F. ON CABBAGE (Brassica oleracea L.) Stella Priscilia Manguande; Max M. Ratulangi; Vivi B. Montong; Selvie Tumbelaka
Jurnal Agroekoteknologi Terapan Vol. 2 No. 2 (2021): EDISI JULI-DESEMBER 2021
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/jat.v2i2.35298

Abstract

This study aims to determine the effect of M. rileyi F. fungus with various concentrations on the mortality of C. pavonana F. pests on cabbage plants in the laboratory and to find out how the effect of M. rileyi F. fungus on C. pavonana F. pests. This research was conducted from September to November 2020, at the BPTPH Laboratory (Center for the Protection of Food Crops and Horticulture) and the method used in this study was a Completely Randomized Design (CRD), which consisted of five treatments namely Control (A), 109 ( B), 108 (C), 107 (D), and 106 (E) and each treatment was repeated three times. The collection of C. pavonana F. larvae was carried out on cabbage plantations in Tomohon City. The larvae used as research test materials are third instar larvae. The results of the data obtained in the study were analyzed using analysis of variance and if the treatment showed a significant effect, it would be continued with the Least Significant Difference (BNT) test. The results of the study, M. rileyi F. proved effective to kill C. pavonana F. larvae from several treatments with different concentrations found the average with the highest value at treatment concentration of 109 was 54.28%. While the lower values, respectively, were found in the treatment concentrations of 108 , 107 , and 106 with values of 35.23%, 27.61%, 21.90% respectively. Keywords:   Control; Fungus; Cabbage Plant; Pest; Metarhizium rileyiAbstrakPenelitian ini dilaksanakan pada bulan September sampai November 2020, bertempat di Laboratorium BPTPH (Balai Perlindugan Tanaman Pangan dan Hortikultura) dan metode yang digunakan dalam penelitian ini adalah Rancangan Acak Lengkap (RAL), yang terdiri dari lima perlakuan yakni Kontrol (A), 109 (B), 108 (C), 107 (D), dan 106 (E). dan masing-masing perlakuan diulangi sebanyak tiga kali. Pengambilan larva C. pavonana F. dilakukan pada lahan pertanaman kubis di Kota Tomohon. Larva yang digunakan sebagai bahan uji penelitian merupakan larva instar tiga. Hasil dari data yang diperoleh dalam penelitian dianalisis menggunakan analisis sidik ragam dan apabila perlakuan menunjukkan pengaruh yang nyata akan dilanjutkan dengan uji Beda Nyata Terkecil (BNT). Hasil dari penelitian, jamur M. rileyi F. terbukti efektif untuk membunuh larva C. pavonana F. dari beberapa perlakuan dengan konsentrasi yang berbeda ditemukan rataan dengan nilai tertinggi pada perlakuan konsentrasi 109 sebesar 54,28%. Sedangkan nilai yang lebih rendah secara berurutan terdapat pada perlakuan konsentrasi 108 , 107 , dan 106 yakni dengan nilai masing – masing sebesar 35,23%, 27,61%, 21,90%.Kata Kunci: Pengendalian; Jamur; Tanaman Kubis;  Hama; Metarhizium rileyi
THE EFFECT OF PGPR (Plant Growth Promoting Rhizobacteria) BIO FERTILIZATION ON THE GROWTH AND PRODUCTION OF LETTAGE (Lactuca sativa L.) Ristiana Fitri Mokoginta; Selvie Tumbelaka; Ronny Nangoi
Jurnal Agroekoteknologi Terapan Vol. 3 No. 1 (2022): EDISI JANUARI-JUNI 2022
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/jat.v3i1.38276

Abstract

This experiment aims to study the effect of PGPR biofertilizer on the growth and yield of lettuce. PGPR is a group of beneficial bacteria that aggressively occupy or colonize the rhizosphere of a thin layer of soil between 1-2 mm around the root zone, PGPR acts as a biofertilizer to accelerate the plant growth process through absorption of nutrients as biostimulants and stimulate plant growth through phytohormones and as a bioprotectant to protect plants from pathogens.This study used a completely randomized design (CRD) method with 4 treatments, namely P0 (control), P1 (300 ml), P2 (75 ml), and P3 (150 ml), with 5 replications to obtain 20 experimental plants. The observed variables measured were plant height (cm), number of leaves (strands), root volume (ml), and plant fresh weight at harvest (gr).The results showed that PGPR had a significant effect on plant growth, namely plant height, number of leaves, root volume, and plant fresh weight. The highest growth and yield of lettuce were found in the treatment with PGPR   (300 ml) at the time of planting.Keywords: Lettuce, Organic Fertiliser, PGPR, Growth, and YieldAbstrakPenelitian ini bertujuan untuk mempelajari pengaruh pemberian pupuk hayati PGPR terhadap pertumbuhan dan hasil tanaman selada. PGPR kelompok bakteri menguntungkan yang agresif  menduduki atau mengkolonisasi rizosfir lapisan tanah tipis antara 1-2 mm di sekitar zona perakaran, PGPR berperan sebagai biofertilizer mempercepat proses pertumbuhan tanaman melalui penyerapan unsur hara sebagai biostimulan dan memacu pertumbuhan tanaman melalui fitohormon dan sebagai bioproktetan melindungi tanaman dari patogen\Penelitian ini mengunakan metode Rancangan Acak Lengkap (RAL) dengan 4 perlakuan yaitu P0 (kontrol), P1 (300 ml), P2 (75 ml), dan P3 (150 ml), dengan 5 ulangan  sehingga diperoleh 20 tanaman percobaan. Variabel pengamatan yang diukur adalah tinggi tanaman (cm), jumlah daun (helai), volume akar (ml), dan bobot segar tanaman pada saat panen (gr).    Hasil penelitian menunjukkan bahwa pemberian PGPR berpengaruh nyata terhadap pertumbuhan tanaman yaitu tinggi tanaman, jumlah daun, volume akar, dan bobot segar tanaman. Adapun pertumbuhan dan hasil tanaman selada tertinggi terdapat pada perlakuan pemberian PGPR (300 ml) pada saat tanam.Kata kunci : Selada, Pupuk Hayati, PGPR, Pertumbuhan dan Hasil.
Co-Authors Adeleyda M. W. Lumingkewas MARTHA FERA DELLASTRADA GARING Max M. Ratulangi Ristiana Fitri Mokoginta Ronny Nangoi Stella Priscilia Manguande Vivi B. Montong