Pengendalian Hama Cylas formicarius pada Tanaman Ubi Jalar (Ipomea batatas L.) Menggunakan Cendawan Entomopatogen Metarhizium sp.

Nonice Manikome

doi:10.51135/justevol1issue2page142-152

Pengendalian Hama Cylas formicarius pada Tanaman Ubi Jalar (Ipomea batatas L.) Menggunakan Cendawan Entomopatogen Metarhizium sp.

JUSTE (Journal of Science and Technology) ◽

10.51135/justevol1issue2page142-152 ◽

2021 ◽

Vol 1 (2) ◽

pp. 142-152

Author(s):

Nonice Manikome

Keyword(s):

Cylas Formicarius ◽

Ipomea Batatas

Cylas formicarius merupakan salah satu hama yang merusak dan mengganggu produksi ubi jalar di Kecamatan Wasile Selatan yang perlu segera diatasi. Dalam hal pengendalian hama dapat dilakukan dengan bioinsektisida yakni memanfaatkan cendawan entomopatogen seperti cendawan Metarhizium sp. Pengendalian hama dengan bioinsektisida merupakan salah satu teknik yang cukup efektif dan ramah lingkungan. Penelitian ini dilakukan dalam Rancangan Acak Lengkap (RAL) dengan 3 faktor yaitu penyemprotan dengan suspensi Metarhizium sp., penyemprotan dengan insektisida kimia bahan aktif karbosulfan, dan kontrol atau tanpa perlakuan insektisida. Hasil pengamatan pada aplikasi Metarhizium sp. ketika umbi dibelah terlihat adanya lubang-lubang kecil bekas gerekan yang tertutup oleh kotoran berwarna hijau dan berbau menyengat. Aplikasi insektisida menyebabkan perubahan morfologis pada larva yakni warna tubuh berubah menjadi kecokelatan dan setelah tiga hari tubuh larva mengering. Hasil analisis menunjukan mortalitas tertinggi ditemukan pada perlakuan insektisida ditemukan pada pengamatan hari kelima (10%)., sedangkan mortalitas tertinggi pada perlakuan Metarhizium sp. ditemukan pada hari kelima (8,5%). Hasil yang diperoleh menunjukkan bahwa cendawan entomopatogen Metarhizium sp. dapat dimanfaatkan untuk mengendalikan hama Cylas formicarius dengan efektif.

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HAMA PENTING TANAMAN UBI JALAR (Ipomea batatas L.(Lamb)) DI KABUPATEN MINAHASA, MINAHASA UTARA, DAN KOTA TOMOHON

EUGENIA ◽

10.35791/eug.17.2.2011.3532 ◽

2011 ◽

Vol 17 (2) ◽

Author(s):

Odi R. Pinontoan ◽

Maxi Lengkong ◽

Henny V.G. Makal

Keyword(s):

Sweet Potato ◽

Field Research ◽

Laboratory Research ◽

Survey Method ◽

Pest Species ◽

Sweet Potatoes ◽

Potato Plants ◽

Cylas Formicarius ◽

Ipomea Batatas ◽

Important Pest

ABSTRACT The research aimed to identify important pests which attack sweet potato in the field. Field and laboratory research were conducted. The field research was carried out in sweet potato cropping areas in Minahasa Regency, North Minahasa regency and Tomohon. The laboratory research was conducted in plant pests and disease laboratory, Faculty of Agriculture Sam Ratulangi University Manado to idedntify the important pest species which were found on sweet potato plants. The duration of the study was four months starting from December 2010 until March 2011. Survey method was applied with purposive random sampling. The research was used 4 period of plant growth namely 1 month, 2 months,3 months, and 4-5 months after planting. The result showed that there were five orders identified, attacking sweet potato since the age of 1-4 months in Minahasa regency, Tomohon and North Minahasa regency. The five orders were Orthoptera, Hemiptera, Homoptera, Lepidoptera, and Coleoptera. The damage on the leaves were caused by pests coreidae, Cicadelidae, Spodoptera sp (Noctuidae), Valanga sp (Acrididae), and Oxya sp. (Acrididae), whereas on the stem was Omphisa sp (Pyralidae). Damage on the tuber was caused by Gryllotalpa sp (Gryllotalpidae), Cylas formicarius (Curculionidae) and Oryctes sp (Dynastidae). Key words : Important Pest Plant Sweet Potatoes, Ipomea batatas L.

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Composition of White Potato Starch (Ipomea batatas L.) with Avocado Seed Starch (Persea americana Mill) and Glyserol Concentration in Edible Film

Serambi Journal of Agricultural Technology ◽

10.32672/sjat.v2i2.2415 ◽

2020 ◽

Vol 2 (2) ◽

Author(s):

Musdar Musdar ◽

Lukmanul Hakim ◽

Juliani Juliani ◽

Jailani Jailani

Keyword(s):

Sweet Potato ◽

Potato Starch ◽

Persea Americana ◽

Edible Film ◽

Glycerol Concentration ◽

White Potato ◽

Ipomea Batatas ◽

Sweet Potato Starch ◽

Local Plants ◽

Avocado Seed

White sweet potato starch (Ipomea batatas L.) and avocado seed starch (Parsea americana Mill) derived from local plants have the potential to be developed as agricultural products. Starch is a hydrocolloid compound as a potential local resource to be utilized. Glycerol function as an anti-freezing which is hygroscopic. This study aims to determine the ratio of white sweet potato starch with avocado seed starch and the concentration of glycerol for making edible film. This study was an experiment using a completely randimized factorial design with 2 (two) main factor consisting of a comparison of white sweet potato starch and avocado seed with 3 levels: P1 = 35%:65%., P2=50%:50%., P3=65%:35% and glycerol concentration with 3 levels: G1=1%., G2=2%., G3=3%. The best result reasearch were content of 23.03% (tratment P1G1), solubility of 55.57% (treatment P3G2)., swelling test of 9.83% (treatment P2g3)., elongation of 8.18% (treatment P3G2)

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