Pengaruh Konsentrasi Insektisida Dimetoat Terhadap Myzus Persicae Sebagai Vektor Cucumber Mosaic Virus Pada Tembakau

Naela, Umi Szaadatun (2018) Pengaruh Konsentrasi Insektisida Dimetoat Terhadap Myzus Persicae Sebagai Vektor Cucumber Mosaic Virus Pada Tembakau. Sarjana thesis, Universitas Brawijaya.

Abstract

Tembakau merupakan komoditas yang memiliki peran dalam penggerak perekonomian nasional. Namun volum impor tembakau masih lebih tinggi jika dibandingkan dengan ekspor. Hal ini disebabkan karena adanya serangan hama dan penyakit. Cucumber Mosaic Virus (CMV)merupakan patogen tanaman yang ditularkan oleh kutu daun M. persicae pada tanaman tembakau. M. persicae pada tanaman tembakau menyebabkan daun menjadi berkerut dan pertumbuhan terhambat. Upaya mengendalikan virus di lapangan petani tembakau menggunakan insektisida dengan konsentrasi yang tidak sesuai ajuran. Insektisida berbahan aktif dimetoat merupakan insektisida yang digunakan oleh petani untuk mengendalikan kutu daun M. persicae. Pengendalian vektor CMV dengan menggunakan insektisida dimetoat perlu dikaji untuk mendapatkan konsentrasi yang optimal. Penelitian dilaksanakan pada bulan Mei sampai dengan November 2017 di laboratorium Entomologi, Jurusan Hama dan Penyakit Tumbuhan, Fakultas Pertanian, Universitas Brawijaya dan di lahan tembakau Desa Jatiguwi, Kecamatan Sumberpucung, Kabupaten Malang. Metode Aplikasi insektisida menggunakan knapsack sprayer berdasarkan kalibrasi. Konsentrasi yang digunakan menggunakan konsentrasi sublethal dari M. persicae yaitu 0,50ml/l, 1,00 ml/l, 1,5 ml/l, 2,00 ml/l dan kontrol. Variabel pengamatan meliputi populasi M. persicae, Intensitas serangan M. persicae, CMV dan berat segar daun tembakau, kemudian di analisi menggunakan sidik ragam (anova) dan apabila pengaruh terhadap perlakuan berbeda nyata dilanjutkan dengan uji Duncan taraf 5%. Aplikasi insektisida dimetoat dapat menekan populasi M. periscaejika dibandingkandengan kontrol. Insektisida dimetoat juga memberikan pengaruh terhadapintensitas seranganM.persicae. Pengamatan terakhir (ke-6) menunjukkan hama intensitas serangan terendah juga terdapat pada konsentrasi 1,5 ml/l yaitu 25,1%, sehingga dapat dinyatakan bahwa insektisida berbahan aktif dimetoat yang terbaik dalam menekan intensitas serangan M. persicae yaitu pada konsentrasi 1,5 ml/l. Namun insektisida dimetoat tidak dapat menekan intensitas seranganCMV, hal ini dikarenan insektisida dimetoat adalah insektisida selektif. Berat segar daun tembaku yang diaplikasikan insektisida dimetoat berfluktuasi antar perlakuan, berat segar daun tembakau terbaik pada konsentrasi 2,00 ml/l dan 4,25 kg per 10 tanaman, hal ini menunjukkan bahwa adanya dampak dari pemberian insektisida terhadap berat segar daun tembakau.

English Abstract

Tobacco is a commodity that has a big role in Indonesias national economy. However,the import of tobacco volume is higher than the exports. It can be caused by pests and diseases. CMV is a pathogen that transmitted by aphids M. persicae in tobacco leaves. M. persiccae causes the leaves become wrinkled and stunted growth. Efforts to control the virus in the field of tobacco, farmers using insecticides with concentrations that not as recommended. insecticides containing active dimetoat is an insecticide used by farmers to control aphids. Control of CMV vector by using dimetoate insecticide should be studied to obtain optimal concentration. The research was conducted on May until November 2017 at Entomology Laboratory, Department of Plant Pest and Disease, Faculty of Agriculture, Brawijaya University and in Jatiguwi tobacco field, Sumberpucung Subdistrict, Malang Regency. Insecticide was applied by using knapsack sprayer based on calibration. The concentrations that used was using sublethal of M. persicae: 0.50 ml/l, 1.00 ml/l, 1.5 ml/l, 2.00 ml/l and control. The variables that is observed were M. persicae population, intensity of M. persicae, CMV and fresh weight of tobacco leaves, then analyzed using anova and significant data have been continued by Duncan test of 5%. Applications of dimetoate insecticides can suppress the population, compared to control. The insecticide dimetoat also gives effect of M. persicae attack intensity which was seen from 3rd observation. The lowest attack intensity was on treatment 3 (14%), followed by treatment 4 (17,4%), then treatment 2 (18.1%) and treatment 1 (20.9%). The last observation (6th observation) showed the lowest pest attack intensity on concentration 1.5 ml/l (25.1%), so it can be explained that dimetoate insecticide could suppress the intensity of M. persicae attack on concentration 1,5 ml/l. However, the dimetoate insecticide could not suppress the attack intensity CMV because it was a selective insecticide. The fresh weight of the applied leaves fluctuated between treatments. The highest fresh weight of apllied leaves tobacco on concentrations of 2,00 ml/l, was 4.25 kg per 10 plants. It showed that insecticides application give an effect on fresh weight tobacco leaves.

Item Type: Thesis (Sarjana)
Identification Number: SKR/FP/2018/120/051802206
Uncontrolled Keywords: -
Subjects: 600 Technology (Applied sciences) > 633 Field and plantation crops > 633.7 Alkaloidal crops > 633.71 Tobacco
Divisions: Fakultas Pertanian > Hama dan Penyakit Tanaman
Depositing User: Nur Cholis
Date Deposited: 24 May 2018 01:42
Last Modified: 20 Oct 2021 04:09
URI: http://repository.ub.ac.id/id/eprint/10956
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