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Production of Sweet Corn (Zea mays saccharata Sturt) Bonanza Variety on Planting Distance Setting and The Use of NPK Fertilizer Carolina Rosa Siallagan; Sutini Sutini; Didik Utomo Pribadi; Ramadhani Mahendra Kusuma
Nusantara Science and Technology Proceedings Sains dan Teknologi Pertanian Modern
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2021.1503

Sweet corn (Zea mays saccharata Sturt) cultivation can be done through variety selection technology use, fertilization, and the proper planting distance. One of the techniques used in sweet corn cultivation is planting distance and fertilization with NPK fertilizer. So, this study is critical in order to set the planting distance and NPK fertilizer dose to enhance sweet corn production. The goal of this study was to see how different planting distances and NPK fertilizer doses affected sweet corn production. The study was carried out in a rice field in Sambiroto Village, Padas District, at an elevation of ± 60 meters above sea level. It was conducted during January-May 2019. The method used was a factorial experiment with three replications based on a Randomized Block Design and two factors. The first factor is the planting distance, they are J1: 60 cm x 15 cm, J2: 60 cm x 20 cm, J3: 60 cm x 25 cm. The second factor is the NPK fertilizer dose, they are P0 = 0 kg / ha, P1 = 100 kg / ha, P2 = 200 kg / ha, P3 = 300 kg / ha. The results showed that (1) the J2 (60 x 20 cm) planting distance had the best effect on sweet corn cobs fresh weight per plant as well as per hectare without husks and sweet corn sugar content. (2) The NPK fertilizer dose of 300 kg/ha and planting distance of 60 x 20 cm resulted in optimal production on sugar content parameters. In conclusion, planting distance setting of 60 x 20 cm and NPK fertilizer dose of 300 kg / ha resulted in optimal production for sweet corn plant.

Pathogenicity of Entomopathogenic Nematodes (NEP) Results of In Vitro Propagation Using Egg Yolk Media Against Mustard Caterpillar Plutella xylostella Mohamad Hipti; Wiludjeng Widajati; Sri Wiyatiningsih; Ramadhani Mahendra Kusuma
Nusantara Science and Technology Proceedings Sains dan Teknologi Pertanian Modern
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2021.1509

Decreased mustard plant production is inseparable from the presence of plant pests and disease, one of which is Plutella xylostella. This pest can reduce the yield by 30-40%, even in some cases found to experience crop failure. Generally, in the community, controlling pests is using chemical pesticides. However, excessive use of chemical pesticides harms the environment and triggers health problems in humans, So, biological control is needed. One of them is an entomopathogenic nematode (NEP). Advantages Nematodes are environmentally friendly and are fast in crippling their host, but the multiplication of entomopathogenic nematodes encounters many obstacles, so research on these alternatives is needed. This research was carried out to determine the pathogenicity of entomopathogenic Nematodes cultured from the egg yolk media on Plutella xylostella larvae, then developed as an effective biocontrol. The pathogenicity test for Plutella xylostella larvae was performed using nine treatments placed in a factorial Completely Randomized Design (CRD) with each treatment repeated three times. The study indicate that the four bacterial isolates had the same ability to kill Plutella xylostella larvae during four days of observation, with the greatest percentage of 100 percent and the lowest percentage of 76.7 percent.

Mass Propagation of Antagonistic Bacteria Pseudomonas fluorescens as an Environmental-Friendly Biocontrol Agent Yosua Nathanael Itona Sagala; Ramadhani Mahendra Kusuma; Suharto
Nusantara Science and Technology Proceedings Seminar Nasional Magister Agroteknologi 2022
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2023.3211

Biological control is a long-term and environmentally friendly method of pest management. The use of biological control agents has several advantages. These advantages include limiting the growth and development of plant-disrupting organisms over a relatively long period. Furthermore, biological agents have advantages in maintaining the equilibrium of the ecosystem that is present in agricultural environments. Due to their ability to create antimicrobials and stimulate plant development, as well as the fact that they are plant growth-promoting rhizobacteria (PGPR) and can survive in adverse environmental circumstances, antagonistic bacteria are one of the biological or biocontrol agents for managing illness. Antagonizing microorganisms can boost plant resilience to disease attack without polluting the environment or leaving toxic residues in the food chain Bacteria with good antagonistic agent properties can prevent the growth of pathogens and stimulate plant resistance responses. In addition, antagonistic bacteria can simultaneously boost the growth response of plants (plant growth promoter). One of the antagonistic bacteria used as PPGF is Pseudomonas fluorescens. Pseudomonas fluorescens has been widely recognized as having the potential as a biological agent to inhibit several plant pathogens. P. fluorescensis a group of root bacteria that effectively suppresses various plant diseases, including damping off of seedlings, soft rot, bacterial wilt, and others on many plant varieties. An antibiotic substance produced by P. fluorescens. (2,4-diacetylphloroglucinol/ 2,4-DAPG) can increase soil resistance to pathogens.

Production of Sweet Corn (Zea mays saccharata Sturt) Bonanza Variety on Planting Distance Setting and The Use of NPK Fertilizer Carolina Rosa Siallagan; Sutini Sutini; Didik Utomo Pribadi; Ramadhani Mahendra Kusuma
Nusantara Science and Technology Proceedings Sains dan Teknologi Pertanian Modern
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2021.1503

Sweet corn (Zea mays saccharata Sturt) cultivation can be done through variety selection technology use, fertilization, and the proper planting distance. One of the techniques used in sweet corn cultivation is planting distance and fertilization with NPK fertilizer. So, this study is critical in order to set the planting distance and NPK fertilizer dose to enhance sweet corn production. The goal of this study was to see how different planting distances and NPK fertilizer doses affected sweet corn production. The study was carried out in a rice field in Sambiroto Village, Padas District, at an elevation of ± 60 meters above sea level. It was conducted during January-May 2019. The method used was a factorial experiment with three replications based on a Randomized Block Design and two factors. The first factor is the planting distance, they are J1: 60 cm x 15 cm, J2: 60 cm x 20 cm, J3: 60 cm x 25 cm. The second factor is the NPK fertilizer dose, they are P0 = 0 kg / ha, P1 = 100 kg / ha, P2 = 200 kg / ha, P3 = 300 kg / ha. The results showed that (1) the J2 (60 x 20 cm) planting distance had the best effect on sweet corn cobs fresh weight per plant as well as per hectare without husks and sweet corn sugar content. (2) The NPK fertilizer dose of 300 kg/ha and planting distance of 60 x 20 cm resulted in optimal production on sugar content parameters. In conclusion, planting distance setting of 60 x 20 cm and NPK fertilizer dose of 300 kg / ha resulted in optimal production for sweet corn plant.

Pathogenicity of Entomopathogenic Nematodes (NEP) Results of In Vitro Propagation Using Egg Yolk Media Against Mustard Caterpillar Plutella xylostella Mohamad Hipti; Wiludjeng Widajati; Sri Wiyatiningsih; Ramadhani Mahendra Kusuma
Nusantara Science and Technology Proceedings Sains dan Teknologi Pertanian Modern
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2021.1509

Decreased mustard plant production is inseparable from the presence of plant pests and disease, one of which is Plutella xylostella. This pest can reduce the yield by 30-40%, even in some cases found to experience crop failure. Generally, in the community, controlling pests is using chemical pesticides. However, excessive use of chemical pesticides harms the environment and triggers health problems in humans, So, biological control is needed. One of them is an entomopathogenic nematode (NEP). Advantages Nematodes are environmentally friendly and are fast in crippling their host, but the multiplication of entomopathogenic nematodes encounters many obstacles, so research on these alternatives is needed. This research was carried out to determine the pathogenicity of entomopathogenic Nematodes cultured from the egg yolk media on Plutella xylostella larvae, then developed as an effective biocontrol. The pathogenicity test for Plutella xylostella larvae was performed using nine treatments placed in a factorial Completely Randomized Design (CRD) with each treatment repeated three times. The study indicate that the four bacterial isolates had the same ability to kill Plutella xylostella larvae during four days of observation, with the greatest percentage of 100 percent and the lowest percentage of 76.7 percent.

Mass Propagation of Antagonistic Bacteria Pseudomonas fluorescens as an Environmental-Friendly Biocontrol Agent Yosua Nathanael Itona Sagala; Ramadhani Mahendra Kusuma; Suharto
Nusantara Science and Technology Proceedings Seminar Nasional Magister Agroteknologi 2022
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2023.3211

Biological control is a long-term and environmentally friendly method of pest management. The use of biological control agents has several advantages. These advantages include limiting the growth and development of plant-disrupting organisms over a relatively long period. Furthermore, biological agents have advantages in maintaining the equilibrium of the ecosystem that is present in agricultural environments. Due to their ability to create antimicrobials and stimulate plant development, as well as the fact that they are plant growth-promoting rhizobacteria (PGPR) and can survive in adverse environmental circumstances, antagonistic bacteria are one of the biological or biocontrol agents for managing illness. Antagonizing microorganisms can boost plant resilience to disease attack without polluting the environment or leaving toxic residues in the food chain Bacteria with good antagonistic agent properties can prevent the growth of pathogens and stimulate plant resistance responses. In addition, antagonistic bacteria can simultaneously boost the growth response of plants (plant growth promoter). One of the antagonistic bacteria used as PPGF is Pseudomonas fluorescens. Pseudomonas fluorescens has been widely recognized as having the potential as a biological agent to inhibit several plant pathogens. P. fluorescensis a group of root bacteria that effectively suppresses various plant diseases, including damping off of seedlings, soft rot, bacterial wilt, and others on many plant varieties. An antibiotic substance produced by P. fluorescens. (2,4-diacetylphloroglucinol/ 2,4-DAPG) can increase soil resistance to pathogens.

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