Jackson Watung
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Aplikasi Pestisida Organik untuk Pengendalian Hama Spodoptera frugiperda pada Tanaman Jagung Christina Leta Salaki; Jackson Watung
Seminar Nasional Lahan Suboptimal 2020: Prosiding Seminar Nasional Lahan Suboptimal ke-8 “Komoditas Sumber Pangan untuk Meningkatkan K
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

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Abstract

Salaki CL, Watung J. Application of  organic pesticides for pest control spodoptera frugiperda in corn plants. In: Herlinda S et al. (Eds.), Prosiding Seminar Nasional Lahan Suboptimal ke-8 Tahun 2020. Palembang 20 Oktober 2020. pp. xx. Palembang: Penerbit & Percetakan Universitas Sriwijaya (UNSRI).Spodoptera frugiperda is a polyphagous insect pest that can cause significant yield loss if not handled properly. Not many specific control technologies to control HSMS have been found. This study aims to obtain an organic pesticide formulation to control S. frugiperda. This study used 5 organic pesticide treatments (lemon grass, clove leaves and cinnamon) at concentrations of 10%, 25%, 40%, 55% and 70%) and Control. Pesticide application is carried out by three methods, namely: Insect Spray Method, Plant Spray Method and Insect Spray Method on Plants. The parameters observed included Symptoms of Damage, Percentage of Mortality and Time of Death. Larval mortality was observed at 12,24, 48 and 72 hours after application. The difference in the proportion of mortality between levels of concentration and control was tested using the Chi-Square method, while the LT50 was tested using probit analysis. The results showed that for the insect spray method of 5 treatments the concentration of Citronella could cause 13.3-67.7% mortality, 6.7-50.0% plant spray method, insect spray method on plants 23.3-86.7 % at 72 hours after application. Meanwhile, the use of clove leaves, with 36.7-76.7% Insect Spray Method, 16.7-56.7% Plant Spray Method, 50.0-93.3% Insect Spray Method on Plants. Whereas in the use of Cinnamon, the Insect Spray Method 33.3- * 6.7%, the Plant Spray Method 20.0-60.0% and the Insect Spray Method on Plants 46.7-100% at 72 hours after application. Time of death (LT50) at a concentration of 70% treatment with the insect spray method on plants within 12 hours after application and the longest at a concentration of 10% by the plant spray method.
KAJIAN PENGENDALIAN HAMA PENGGEREK BATANG CENGKEH ( Hexamitodera semivelutina Hell. ) MENGGUNAKAN METABOLIT SEKUNDER JAMUR Metarhizium DAN Beauveria DENGAN METODE INFUS AKAR Fini Natalia Tumewan; Jackson Watung; Maxi Lengkong; Dewi R.
COCOS Vol. 12 No. 1 (2020): EDISI JANUARI-MARET 2020
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v5i5.30054

Abstract

SUMMARYThis research aims to determine the effectiveness of the use of secondarymetabolites of Metarhizium and Beauveria fungi by infusion of roots in clove plantsagainst H. semivelutina larvae. The results of the study are expected to benefitfarmers in controlling H. semivelutina pests with secondary metabolites of thefungus Metarhizium and Baeveria in clove plants by means of a root infusion.The study was conducted in a clove plantation area owned by farmers in TonsawangVillage, Tobatu District, Southeast Minahasa Regency, North Sulawesi. Theresearch lasted for 3 (three) months, from February to April 2020. This study useda Randomized Block Design (RBD) method on farmers' clove plants.Determination of plants that will be applied to the root infusion is done by lookingat plants that are attacked by H. semivelutina pests by looking at the hole that emitsliquid mixed with feces in the clove plants in Tonsawang Village, Tombatu District.In this study using secondary metabolites of Metarhizium fungus and Beauveriafungus in H. semivelutina pest control by means of root infusion.The results showed that the average effectiveness of the use of secondarymetabolites in controlling H. semivelutina reached 78.52%, with a percentage ofeffectiveness of the secondary metabolite of Metarhizium fungus at 81.05% whichwas not significantly different from the secondary metabolite of Beauveria that was75.59%, but significantly different from the control of 10.57 %.Keywords: Effectiveness, secondary Metarhizium metabolites of fungus,Beauveria, H. semivelutina, Tombatu.Keywords: Effectiveness, secondary metabolites of Metarhizium fungus,Beauveria, H. semivelutina, Tombatu.