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All Journal Jurnal Tanaman Industri dan Penyegar Mitra Sains
Irwan Lakani
Universitas Tadulako
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Industrial & Manufacturing Engineering

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Pengaruh Metabolit Sekunder Trichoderma spp. dan Fungisida Nabati untuk Mengendalikan Penyakit VSD pada Tanaman Kakao Rita Harni; Widi Amaria; Anis Herliyati Mahsunah; Irwan Lakani
Jurnal Tanaman Industri dan Penyegar Vol 6, No 3 (2019): Jurnal Tanaman Industri dan Penyegar
Publisher : Pusat Penelitian dan Pengembangan Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jtidp.v6n3.2019.p109-118

Abstract

Vascular streak dieback (VSD) caused by Ceratobasidium theobromae is a major disease in cacao which results in yield losses up to 45%. Controlling VSD using secondary metabolites and botanical fungicide is expected to reduce disease attacks because secondary metabolites contain antibiotics, enzymes, and toxins that can control the disease and botanical fungicide that are antifungal. The research aimed to determine the effect of Trichoderma spp. secondary metabolites and botanical fungicide to control VSD in cacao. The research was conducted in the Integrated Laboratory, IIBCRI, Sukabumi, Biotechnology Laboratory, BPPT, Serpong and farmer gardens in Rahmat Village, Palolo District, Sigi Regency, Central Sulawesi, from March to December 2017. The research used a randomized block design of 7 treatments with 3 replications; each replication consists of 10 plants. The treatments were: (1) Trichoderma virens LP1, (2) T. amazonicum LP3, (3) botanical fungicide, (4) T. virens LP1 + botanical fungicide, (5) T. amazonicum LP3 + botanical fungicide, (6) chemical fungicide (for comparison), (7) control (without application). Variables observed were the symptoms of the attack, severity and disease progression, and production. The results showed that Trichoderma spp. secondary metabolites suppress VSD disease severity and increase cacao production up to 33.97%–61.34%, either in a single form or in combination with botanical fungicide. T. virens LP1 secondary metabolite showed the highest suppression of VSD disease (54.18%), followed by the combination of T. virens LP1 + botanical fungicide (47.64%), better than chemical fungicide (30.89%). Thus, Trichoderma spp. secondary metabolites can be used as a VSD control technology.
Intensitas Penyakit Pembuluh Kayu (Ppk) Pada Areal Budidaya Tanama Kakao Di Desa Benggaulu Kecamatan Dapurang Kabupaten Pasangkayu Provinsi Sulawesi Barat Ismail Suaib S; Irwan Lakani; Isrun Isrun
Mitra Sains Vol 10 No 1 (2022): Maret
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/ms26866579.2022.v10.i1.pp33-41

Abstract

The aim of this research is to measure the intensity of wood vein disease and the level of soil fertility in areas of cocoa land affected by the disease and to determine the relationship between the level of maintenance (sanitation) of cocoa and the development of wood disease attacks. The analysis was carried out by calculating the incidence of disease and disease severity using the disease incidence and severity formula and the data was carried out using a simple variable correlation test to see the relationship between the sanitation level of cocoa plants. and the development of PPK disease. The results of disease incidence calculations show that land two (2) has the highest incidence of PPK disease at 69.33% and the lowest disease incidence is found in land four (4), namely 42.67%. Meanwhile, the highest level of PPK disease severity was found on land 2 at 29.47% and the lowest level of disease severity was found on land 4 at 13.73%. The results of the bivariate correlation test (r) show the person value correlation value r = 0.992 with a significance value (5%) = 0.008, which means that sanitation has a very close relationship with the development of wood disease.
Co-Authors Anis Herliyati Mahsunah Ismail Suaib S Isrun Isrun Rita Harni Widi Amaria