Harman Hamidson
Universitas Sriwijaya

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Trichoderma spp. dan Penicillium spp. dari Tanah Rizosfer Lahan Rawa Lebak dalam Menginduksi Ketahanan Tanaman Cabai Terhadap Serangan Penyakit Rebah Kecambah Muslim, Ahmad; Syahri, Syahri; Hamidson, Harman; Salim, Abdullah
Jurnal Fitopatologi Indonesia Vol 10, No 1 (2014)
Publisher : Jurnal Fitopatologi Indonesia

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Abstract

Soil microbes associated with rhizosphere are important for promoting plant growth and inducing resistance to diseases. The research was conducted to study the ability of Trichoderma spp. and Penicillium spp. isolated from rhizosphere in lowland swampy area for controlling damping-off disease caused by Rhizoctonia solani Khun. Trichoderma spp. and Penicillium spp. were cultured in bran, corn meal, and rice straw containing media and applied as inoculum to 2-weeks old seedlings. Application of two fungi isolates effectively induced resistance of chili plants to damping-off disease. Trichoderma spp. and Penicillium spp. were significantly reduced disease incidence by 61.5–100% to 46.2–100%, respectively and disease severity by 50–100% and 30–95.9%, respectively. This experiment showed the potential of Trichoderma spp. and Penicillium spp. as biocontrol agents to control damping-off disease on chili.  
Evaluasi Trichoderma dalam Mengendalikan Penyakit Rebah Kecambah Tanaman Cabai Muslim, Ahmad; Palimanan, Komar; Hamidson, Harman; Salim, Abdullah; Anwar, Nirwati
Jurnal Fitopatologi Indonesia Vol 10, No 3 (2014)
Publisher : Jurnal Fitopatologi Indonesia

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Abstract

Damping-off disease is commonly occurred in chili pepper field and always caused significant effect on chili production. This experiment was conducted to determine the ability of 14 isolates of Trichoderma isolated from lowland swampy area in South Sumatera against damping-off disease. The result showed that treatment of Trichoderma significantly inhibited damping-off disease caused by Rhizoctonia solani. Treatment of Trichoderma effectively reduced the percentage of pre-emergence damping-off, post-emergence damping-off, and disease severity by 51.8–100%, 80–100%, and 51.90–96.96%, respectively. The treatment was also capable to increase percentage of height and fresh weight of chili pepper seedling, i.e. 45.45–64.37% and 37.78–81.19%, respectively.
Evaluasi Trichoderma dalam Mengendalikan Penyakit Rebah Kecambah Tanaman Cabai Muslim, Ahmad; Palimanan, Komar; Hamidson, Harman; Salim, Abdullah; Anwar, Nirwati
Jurnal Fitopatologi Indonesia Vol 10, No 3 (2014)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Show Abstract | Original Source | Check in Google Scholar | Full PDF (427.701 KB)

Abstract

Damping-off disease is commonly occurred in chili pepper field and always caused significant effect on chili production. This experiment was conducted to determine the ability of 14 isolates of Trichoderma isolated from lowland swampy area in South Sumatera against damping-off disease. The result showed that treatment of Trichoderma significantly inhibited damping-off disease caused by Rhizoctonia solani. Treatment of Trichoderma effectively reduced the percentage of pre-emergence damping-off, post-emergence damping-off, and disease severity by 51.8?100%, 80?100%, and 51.90?96.96%, respectively. The treatment was also capable to increase percentage of height and fresh weight of chili pepper seedling, i.e. 45.45?64.37% and 37.78?81.19%, respectively.
Trichoderma spp. dan Penicillium spp. dari Tanah Rizosfer Lahan Rawa Lebak dalam Menginduksi Ketahanan Tanaman Cabai Terhadap Serangan Penyakit Rebah Kecambah Muslim, Ahmad; Syahri, Syahri; Hamidson, Harman; Salim, Abdullah
Jurnal Fitopatologi Indonesia Vol 10, No 1 (2014)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Show Abstract | Original Source | Check in Google Scholar | Full PDF (291.422 KB)

Abstract

Soil microbes associated with rhizosphere are important for promoting plant growth and inducing resistance to diseases. The research was conducted to study the ability of Trichoderma spp. and Penicillium spp. isolated from rhizosphere in lowland swampy area for controlling damping-off disease caused by Rhizoctonia solani Khun. Trichoderma spp. and Penicillium spp. were cultured in bran, corn meal, and rice straw containing media and applied as inoculum to 2-weeks old seedlings. Application of two fungi isolates effectively induced resistance of chili plants to damping-off disease. Trichoderma spp. and Penicillium spp. were significantly reduced disease incidence by 61.5?100% to 46.2?100%, respectively and disease severity by 50?100% and 30?95.9%, respectively. This experiment showed the potential of Trichoderma spp. and Penicillium spp. as biocontrol agents to control damping-off disease on chili. ?
Produksi spora Bacillus thuringiensis pada media limbah dengan penambahan tepung cangkang keong mas dan toksisitasnya terhadap Spodoptera litura Fabr. (Lepidoptera:Noctuidae) Pujiastuti, Yulia; Triyansyah, Triyansyah; Hamidson, Harman; Effendy, Effendy; Suparman, Suparman
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol 6, No 2 (2017): JLSO
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

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Abstract

Pujiastuti et al, 2017. Production of Bacillus thuringiensis Spores in Agricultural Waste with Addition of Golden Snail Shell Powder and its Toxicity Against Spodoptera litura Fabr. (Lepidoptera: Noctuidae). JLSO 6(2):150-157.Armyworm or Spodoptera litura is an important pest on the cultivation of plants. Controlling by using biological agents such as Bacillus thuringiensis is an alternative to the use of chemical insecticides which cause a negative impact on insects and environment. B. thuringiensis-based bio insecticide can be reproduced by using agricultural waste with the addition of golden snail shell flour. The study was aimed to investigate the production of B. thuringiensis spores on agricultural waste media and the addition of golden snail shell flour and its toxicity to armyworm, as well. The research design was a completely randomized design with 10 treatments and 3 replications. Treatment were the media of agricultural waste: 50 mL coconut water, 50 mL of tofu liquid waste, 50 mL of rice wash water and mixture of three media (v/v/v, 1:1:1) with the addition of golden shell flour as much as 5 g and mineral salt of CaCl2, MgSO4, K2HPO4, KH2PO4. The results showed the production of bacterial spores ranged from 8.90x107 spores/mL to 9.51x107 spores/mL with the highest production in the mixed treatment of the three waste media (coconut water, tofu waste and rice laundry water). In this treatment the level of toxicity was 40% in larvae of armyworm. The weight of leaf feed consumed by armyworm at various treatments was ranged from 36.33 to 46.67 g/10 larvae. The addition of mashed shell flour to growth media of B. thuringiensis did not increase the number of spores.
Penyakit Antraknosa (Colletotrichum spp.) pada Tanaman Cabai di Kabupaten Ogan Ilir Hamidson, Harman; Suwandi, Suwandi; TA, Effendy.
Seminar Nasional Lahan Suboptimal 2018: Prosiding Seminar Nasional Lahan Suboptimal "Tantangan dan Solusi Pengembangan PAJALE dan Kel
Publisher : Seminar Nasional Lahan Suboptimal

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Abstract

Hamidson et al, 2019. Anthracnose Disease (Colletotrichum spp.) of Chilli (Capsicum annum L) in Ogan Ilir District. pp. 129-137.Anthracnose disease is one of the obstacles in the production of red chili in the field, and is ranked first among fungal diseases. This study aims to determine the procedures and habits of farmers in cultivating red chilli plants in the field, namely the layout of the mounds and evaluation of the use of fungicides. Plant samples were taken randomly for each plot of 80 plants the plants were every harvesting  six times for 3. The percentage of disease incidence, disease severity and the extent of the curvature of the anthracnose disease (incidence and severity of the disease) showed a significant difference in the order of the mound plot. The results of evaluating the use of fungicides in vitro showed a significant difference in growth inhibitors of Colletotrichum spp.
Penekanan Penyakit Blas Leher Malai Padi Menggunakan Ekstrak Kompos Jerami Padi Suwandi, Suwandi; Hamidson, Harman; Muslim, Ahmad
Jurnal Fitopatologi Indonesia Vol 12, No 3 (2016)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

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Abstract

Blast is the most important disease of rice and may cause significant losses in the reclaimed tidal swamp of South Sumatra. Water extracts of fermented composts prepared from straws of the vigorous rice plant were tested in pot experiment for their ability to control blast. Rice variety Ciherang was grown on mixture of field soil and 1% diseased rice straw (v/v) collected from a tidal swamp rice field. Incidence of panicle blast was reduced by 71?87% in response to application of compost extract. The compost extract did not affect seed germination and plant height, instead, it increased the yield. The rice straw from healthy and vigorous plants is potential as a source for blast disease control.