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Abstrak (Bhs. Indonesia)

Rumput belulang (Eleusine indica (L.) Gaertn) merupakan gulma yang merugikan tanaman budidaya. Pengendalian yang umum dilakukan yakni dengan penggunaan herbisida kimia yang dapat menimbulkan dampak negatif. Salah satu teknik pengendalian gulma yang aman untuk dilakukan adalah pengendalian hayati dengan memanfaatkan jamur patogen gulma Chaetomium sp., Curvularia sp., dan Fusarium sp. Penelitian ini bertujuan untuk mengetahui frekuensi yang terbaik dari jamur patogen gulma secara tunggal atau campuran terhadap rumput belulang in vivo. Penelitian ini dilaksanakan di Laboratorium Perlindungan Tanaman dan Experimental Farm Fakultas Pertanian Unsoed, Purwokerto, selama lima bulan. Rancangan yang digunakan adalah Rancangan Acak Kelompok Faktorial yang terdiri atas 2 faktor, yaitu frekuensi semprot (frekuensi 1, 3, dan 5 kali) dan jamur patogen gulma (kontrol, Chaetomium sp., Curvularia sp., Fusarium sp., campuran Chaetomium sp. dan Curvularia sp., Chaetomium sp. dan Fusarium sp., Curvularia sp. dan Fusarium sp., serta Chaetomium sp., Curvularia sp., dan Fusarium sp.). Variabel yang diamati meliputi masa inkubasi, intensitas penyakit, AUDPC, bobot segar gulma, dan bobot kering gulma. Hasil penelitian menunjukkan bahwa frekuensi penyemprotan 3 kali jamur patogen gulma secara tunggal atau campuran merupakan frekuensi terbaik dalam mengendalikan rumput belulang, dengan mempercepat masa inkubasi 14,79 %, meningkatkan intensitas penyakit 6,14 %, meningkatkan nilai AUDPC 10,14 %, menekan bobot segar gulma 38,04 %, serta menekan bobot kering gulma 17,17 % dibandingkan dengan frekuensi penyemprotan 1 kali. Campuran Chaetomium sp., Curvularia sp., dan Fusarium sp. merupakan campuran terbaik karena mampu mempercepat masa inkubasi 85,41%, meningkatkan intensitas penyakit 69,07%, meningkatkan nilai AUDPC 80,35%, menekan bobot segar gulma 76,44% dan bobot kering gulma 64,90% dibanding kontrol.

Abtrak (Bhs. Inggris)

Goosegrass (Eleusine indica (L.) Gaertn) is a weed that harms cultivated plants. A common control do is with chemical herbicides that can cause negative impacts. One of the safe weed control techniques is biological control by utilizing weed pathogen fungi Chaetomium sp., Curvularia sp., and Fusarium sp. This research aims to determine the best frequency of weed pathogenic fungi single-handedly or mixed against the grass in vivo. This research was conducted at the Faculty of Agriculture's Plant Protection and Experimental Farm Laboratory, Unsoed, Purwokerto, for five months. The design used is a Factorial Random Design Group using two factors, namely spray frequency (frequency one time, frequency three times, and frequency five times) and weed pathogen fungus (Control, Chaetomium sp., Curvularia sp., Fusarium sp., the efficacy of Chaetomium sp. and Curvularia sp., the efficacy of Chaetomium sp. and Fusarium sp., a combination of Curvularia sp. and Fusarium sp., as well as the seizure of Chaetomium sp., Curvularia sp., and Fusarium sp.). Observed variables include the incubation period, disease intensity, AUDPC, fresh weight of weeds, and dry weight of weeds. The results showed that spraying weed pathogenic fungi for singly or in a mixture 3 times was the best frequency in controlling the goosegrass, by accelerate the incubation period by 14,79 %, increase the intensity of the disease by 6,14 %, increase the value of AUDPC by 10,14 %, suppress the fresh weight of weeds 38,04 %, and suppress the dry weight of weeds 17,17 % compared to frequency 1 time. Chaetomium sp., Curvularia sp., and Fusarium sp. is the best mixture to control the goosegrass because it can accelerate the incubation period by 85.41%, increase the intensity of the disease by 69.07%, increase the value of AUDPC by 80.35%, suppress the fresh weight of weeds 76.44% and the dry weight of weeds 64.90% compared to control.

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