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UJI ANTAGONISME TRICHODERMA SP. TERHADAP COLLETOTRICHUM CAPSICI PENYEBAB PENYAKIT ANTRAKNOSA PADA CABAI KERITING SECARA IN VITRO Khairul, Ibnu; Montong, Vivi B.; Ratulangi, Max M.
COCOS Vol 1, No 2 (2018)
Publisher : COCOS

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Abstract

ABSTRACT  Colletotrichum capsici is one of the fungi that can cause anthracnose disease in chili plants. Trichoderma sp. is an antagonistic fungus that has the potential to control anthracnose disease. This study aims to determine the growth and development of the fungus Trichoderma sp. and Colletotrichum capsici pathogenic fungi as well as the percentage of inhibition of Trichoderma sp. fungus. against the Colletotrichum capsici fungus. Testing using dual culture method on Potato Dextrose Agar media to know the percentage of inhibition.The results of this study showed that the colony of Trichoderma sp. able to inhibit the growth of Colletotrichum capsici fungal colonies with an average percentage of 2.82% inhibition on the third day after inoculation; 70.28% on the fourth day after inoculation and 100% on the fifth day after inoculation.  Keywords: Percentage, Colletotrichum capsici, Anthracnose
INOVASI TEKNIK PENGENDALIAN HAMA YANG RAMAH LINGKUNGAN PADA TANAMAN KRISAN Mamahit, Juliet M. Eva; Manueke, Jusuf; Montong, Vivi B.
JURNAL LPPM BIDANG SAINS DAN TEKNOLOGI Vol 5, No 2 (2018)
Publisher : JURNAL LPPM BIDANG SAINS DAN TEKNOLOGI

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Kelurahan Kakaskasen II Kecamatan Tomohon Timur. merupakan sentra budidaya krisan di Tohohon khususnya dan Sulawesi pada umumnya. Tujuan kegiatan ini akan dihasilkan petanipetani yang berpotensi untuk menjadi pelopor dalam pemanfaatan potensi sumber daya alami (SDA) untuk pengendalian yang ramah lingkunga terhadap hama pada tanaman krisan. Transfet Iptek seperti pemanfaatan musuh alami yang ada seperti parasitoid, predator dan patogen untuk pengendalian OPT (organisme pengganggu tanaman krisan). Beberapa jenis hama utama tanaman krisan antara lain: kutu daun Aphid sp, tungau Tetranichus sp. Trips sp dan penyakit karat dan busuk akar Phytophtora sp., dan embun jelaga Oidium sp. Upaya perlindungan tanaman terhadap hama tanaman krisan yang ramah lingkungan seperti pemanfaaan sumber daya alam berupa tanaman yang dapat dijadikan bahan insektisida nabati seperti Buah Bitung dan Buah Lanta, sereh, kemangi serta tanaman yang ada di sekitar petani ternyata merupakan inovasi bagi petani dalam pengaturan populasi hama krisan. Teknologi pengendalian hama yang ramah lingkungan sangat diperlukan bagi masyarakat tani, untuk mengurangi dampak penggunaan pestisida yang berlebihan. Manfaat lainnnya dari penerapan teknologi yang ramah lingkungan yaitu : keragaman hayati tetap lestari, musuh alami bekerja maksimal, biaya produksi dapat ditekan, keamanan dan keselamatan petani terjamin, dan produktifitas krisan meningkat._________________________________________________________________Kata kunci : tanaman krisan, insektisida nabati, parasitoid, predator
UJI ANTAGONISME Trichoderma spp. TERHADAP Phytophthora palmivora PENYEBAB PENYAKIT GUGUR BUAH KELAPA Kaunang, Ryan A.; Assa, Berty H.; Montong, Vivi B.
COCOS Vol 1, No 3 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i3.20865

Abstract

ABSTRACT  The deciduous fall of coconut fruit is caused by Phytophthora palmivora fungus.  This study aims to determine the ability of Trichoderma spp. Inhibiting P. palmivora on PDA media in vitro.  Research method used experimentally, that is antagonism test with method of dual culture method. P. palmivora in isolation from coconut fruit showing symptoms of the disease. The results showed that the antagonistic fungus Trichoderma spp could suppress the growth and development of the P. palmivora fungus, the average percentage of inhibition of the antagonistic fungus Trichoderma spp. of the pathogenic fungi of P. palmivora in vitro on PDA media on the fifth day is (100%) for simultaneously inoculated antagonism test and (40,62%) for antagonism test wherein antagonistic inoculation 4 days after pathogen. On the seventh day, the average percentage of inhibition of the antagonistic fungus Trichoderma spp. of the pathogenic fungus P. palmivora is (100%) for both treatments of this antagonism test.  Key Words: Coconut Nut Fall, Phytophthora palmivora, Antagonist
PERSENTASE SERANGAN HAMA KUMBANG (Oryctes rhinoceros L.) PADA TANAMAN KELAPA(Cocos nucifera L.) DI KECAMATAN TOMBATU KABUPATEN MINAHASA TENGGARA Kojong, Erwin Nando; Montong, Vivi B.; Kaligis, James B.; Pioh, Diane D.
COCOS Vol 3, No 3 (2020)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v3i3.28746

Abstract

ABSTRACT Cocos plants ( cocos nucufera L ) are versatile plants, because almost all parts of these plants can be processed and utilized by humans. The production of coconut is very important for human along with the amound off production that always fluctuates from years. Another factor that can inhibiti the growth of coconut is a pest attack. This research aims to determine the percentage of Oryctes rhinoceros L (coconut rhinoceros beetle) attacks on coconut ( Cocos nucifera L.) in Tombatu Subdistrict, Southeast Minahasa District which is housed in five gardens.( polong gardens, Bangataas gardens, Derel gardens, Bendo gardens and Linowit gardens, during three months start from October to December 2019. This research uses survey method or direct observation at the location. The percentage of O. rhinoceros attack in the first to fifth observation each farm was as follows: (1) Bangataas garden 42,52%, (2) Polong garden 32.51%, and (3) Linowit garden 15.46%, (4) Bendo garden 14,32% and (5) Derel garden 13,8%. Keywords: percentage, O rhinoceros, Coconut
PENGENDALIAN HAMA WALANG SANGIT (Leptocorisa acuta Thunb.) DENGAN MENGGUNAKAN PERANGKAP BANGKAI IKAN DAN KEONG PADA TANAMAN PADI Buida, Ruth Kristivoni; Kandowangko, Daisy; Montong, Vivi B.
COCOS Vol 7, No 7 (2021)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v7i7.36419

Abstract

BSTRACT Walang sangit is an important pest in rice plants. Because of the attack of walang sangit on rice crops in the flowering phase, farmers suffer losses because the grain of rice does not produce. The attack of pests that are high enough to cause rice crops to fail to harvest or reduce the quality of grain and the quantity of production. To prevent the attack of walang sangit on rice plants, it is necessary to control environmentally friendly walang sangit pests to suppress the impact of pesticide use by finding alternative substitutes, namely with carcass smell extracts, in this case using fish and conch carcasses. The purpose of this study is to find out the extent to which fish and conch carcasse traps can be used for pest control in rice plants located in Kiniar Village of Tondano Subdistrict during Minahasa Regency and implementation time from March to July 2021. This study used 2 treatments, namely fish carcass traps and conch carcasses, each treatment using a carcass mass weighing 150 grams, with 10 repeats. The results showed that both of these treatments can give good results where the pest walang sangit is attracted to both traps although in the treatment of fish carcass traps are able to attract more pests walang sangit with a value of 64.9 tails, and in the trap of conch carcass 38.7 tails. The results of the test analysis of the average difference between two free samples proved that the value of thitung > ttabel, which is 4.38 > 2,101, thus the hypothesis is proved to be H0 in rejected and H1 to be accepted. Keyword : Walang Sangit, carcass smelling accretion, fish and conch carcass traps
THE USE OF THE FUNGUS Metarhizium rileyi F. IN THE CONTROL OF Crocidolomia pavonana F. ON CABBAGE (Brassica oleracea L.) Manguande, Stella Priscilia; Ratulangi, Max M.; Montong, Vivi B.; Tumbelaka, Selvie
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