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All Journal Agrosains: Jurnal Penelitian Agronomi Agrotechnology Research Journal
Evan Purnama Ramdan
[SINTA ID : 5979215], [GOOGLE Scholar ID: C3cKbJ8AAAAJ], Department of Agrotechnology, Faculty of Agriculture, Universitas Gunadarma, Depok, West Java
Agriculture, Biological Sciences & Forestry

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Efikasi Beberapa Agens Hayati Terhadap Penekanan Pertumbuhan Pyricularia grisea Secara In Vitro Shyntiya Ayu Lestari; Umi Kalsum; Evan Purnama Ramdan
Agrosains : Jurnal Penelitian Agronomi Vol 23, No 1 (2021): Agrosains: Jurnal Penelitian Agronomi
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/agsjpa.v23i1.48174

Abstract

The demand for rice as an important food crop in Indonesia is still constrained by the attack of blast disease caused by Pyricularia grisea. Controlling using synthetic chemical pesticides has a negative impact on the environment so that the use of biological agents is an alternative option. This study aims to determine the effectiveness of several biological agents against the pathogen P. grisea that causes blast disease in rice plants in vitro. The study used a completely randomized design (CRD) with 6 levels of treatment and was repeated 3 times using the dooble culture method. The results of the study showed that the inhibition of P. grisea was the highest in the treatment of P. grisea × Trichoderma sp. and P. grisea × Gliocladium sp. namely 67.04% and 51.85% compared to other treatments. The P. polymyxa and P. fluorescence treatments showed low inhibition, namely 23.70% and 28.89%. Biological agents Trichoderma sp. and Gliocladium sp. able to inhibit the growth of the fungus P. grisea. Each biological agent has a different percentage of inhibition in that caused by the inhibitory mechanism of the biological agent.
Survei Penyakit Busuk Pangkal Batang Kelapa Sawit di Kebun Cikasungka, PT Perkebunan Nusantara VIII, Bogor Amelia Salsabila; Evan Purnama Ramdan; Paranita Asnur; Hendi Hidayat
Agrosains : Jurnal Penelitian Agronomi Vol 24, No 1 (2022): Agrosains: Jurnal Penelitian Agronomi
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/agsjpa.v24i1.56720

Abstract

Oil palm (Elaeis guineensis Jack) is an important plantation commodity for both agriculture and the economy, because its oil-producing potential is greater than that of other crops, such as corn, soybean and sunflower oil. The main disease of this plant is stem rot (BPB) caused by Ganoderma boninense. Therefore, it is necessary to know the incidence and severity of the disease as well as the control efforts that have been carried out at PTPN VIII Palm Oil Plantation, Cikasungka. The study used a Randomized Block Design with 3 observation blocks that had Ganoderma boninense attack each covering an area of 25 ha, each block taken 5 observation plots with an area of 50 x 50 m2 each (4 on the edge of the block and 1 in the middle of the block), then from each plot, 5 sub-plots measuring 10 x 10 m2 were taken (4 at the edges of the plot and 1 in the middle of the plot). Observational data were analyzed with variance and further tested by Duncan Multiple Range Test. The results of this study indicate that the symptoms of disease in the garden are very diverse, ranging from mild to very severe. The signs of the disease can be identified through the fruiting bodies of Ganoderma boninense. The incidence of disease in all survey locations ranged from 16 – 38%, where B3 was significantly different from B1. The lowest percentage of disease severity was in location B3 (5.75%) which was statistically significantly different from location B1. Location B1 had the highest disease severity, which was 23%. The control of BPB that has been carried out at the survey site includes the construction of isolation trenches followed by the application of biofungicides with the active ingredients of T. koningii and T. harzianum.
Peran Solarisasi Tanah terhadap Pertumbuhan Patogen Tular Tanah dan Populasi Mikroba Tanah Evan Purnama Ramdan; Astri Afriani; Andini Hanif; Cheppy Wati; Nurholis Nurholis; Dwi Astuti; Widodo Widodo
Agrotechnology Research Journal Vol 6, No 1 (2022): Agrotechnology Research Journal
Publisher : Perkumpulan Agroteknologi/Agroekoteknologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (331.97 KB) | DOI: 10.20961/agrotechresj.v6i1.55979

Abstract

Soil-borne soil pathogens are pathogens that inhabit the soil and can survive for years in the soil, making them very difficult to control. Control with pesticides and fungicides harms the ecosystem, so other controls are needed such as soil solarization. This study aims to determine the growth response of soil-borne pathogens and soil microbial populations to soil solarization treatment. The study used a completely randomized design with 4 treatments consisting of solarization on soil media, solarization on soil and compost media, without solarization on soil media, and without solarization on soil media and compost on plastic trays. Each treatment was repeated 4 times. The soil-borne pathogens used were Sclerotium rolfsii and Rigidoporus lignisus. Each pathogen was planted in each planting medium with a depth of 5 and 10 cm. Then each tray is covered with 0.1 mm thick transparent plastic. Then given solarization treatment for four weeks. At the end of the observation, sclerotia and R. lignosus were grown on PDA media to be tested for pathogen survival and the solarization efficacy against pathogen growth was calculated. Soil samples from each treatment were also taken to calculate the soil microbial population. The results showed that soil solarization was able to suppress the growth of R. lignosus by 80-100% and S. rolfsii by 100%. Meanwhile, the microbes found in the soil solarization treatment consisted of groups of bacteria and fungi, respectively 7.67×104–1.90×107 CFU.mL-1 and 1.00×104–5.82×105 CFU.mL-1.
Co-Authors Afriani, Astri Amelia Salsabila Andini Hanif Cheppy Wati Dwi Astuti Hendi Hidayat Nurholis Nurholis Paranita Asnur Shyntiya Ayu Lestari Umi Kalsum Widodo Widodo