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Derek Kornelis Erari
Fakultas Pertanian Universitas Papua Jl. Gunung Salju Amban, Manokwari – Papua Barat
Agriculture, Biological Sciences & Forestry

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Konsentrasi beberapa ekstrak daun ketapang (Terminalia catappa L.) sebagai herbisida nabati pada pertumbuhan gulma rumput grinting (Cynodon dactylon (L.) Pers.) Desiana Linda Nurhalina; Derek Kornelis Erari; Kati Syamsudin Kadang Tola; Yohanis Amos Mustamu
Agrotek Vol 9 No 1 (2021): Juli
Publisher : Fakultas Pertanian Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (412.34 KB) | DOI: 10.46549/agrotek.v9i1.193

Abstract

The objectives of the study were to determine the inhibition of Terminalia catappa leaf extract on the growth of grinting grass weed (Cynodon dactylon (L.) Pers.) as well as determine at what concentration it could inhibit growth of grinting grass weed. The research method used in this study is an experimental method with observation techniques. The results of this study found that Terminalia catappa leaf extract can inhibit the growth of grinting grass weed (Cynodon dactylon (L.) Pers.). Furthermore, 20% of Terminalia catappa leaf extract was the most effective concentration in inhibiting grinting grass weed. Therefore, it can be used as an alternative to organic herbicides.
Seleksi beberapa isolat Pseudomonas kelompok Fluorescens yang berpotensi mengendalikan Fusarium oxysporum f. sp. lycopersici penyebab layu tomat secara in vitro Hesron Induek; Derek Kornelis Erari; Adelin Elsina Tanati; Yacob Bodang
Agrotek Vol 8 No 2 (2020): Desember
Publisher : Fakultas Pertanian Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2027.741 KB) | DOI: 10.46549/agrotek.v8i2.199

Abstract

This study aimed to determine the potential of several isolates of Pseudomonas fluorescens group from the rhizosphere as biological agents in suppressing the growth of F. oxysporum f.sp. lycopersici in vitro. The method used in this research is an experimental method, by selecting several isolates of Pseudomonas bacteria group fluorescens that have the potential to control the pathogen F. oxysporum in vitro. The results showed that Pseudomonas isolates from fluorescens groups M1, M2, M3, and M4 had the potential to control the pathogen F. oxysporum f.sp. lycopersici in vitro by inhibiting the growth of pathogens. The average percentage of pathogen growth inhibition from the highest was isolate M2 (64.18%), isolate M3 (62.53%), isolate M1 (60.02%), and isolate M4 (60%).
Co-Authors Desiana Linda Nurhalina Hesron Induek Kati Syamsudin Kadang Tola Yacob Bodang Yohanis Amos Mustamu