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UJI EFIKASI AGENS HAYATI TERHADAP PENYAKIT HAWAR DAUN BAKTERI (Xanthomonas oryzae pv. oryzae) PADA BEBERAPA VARIETAS PADI SAWAH (Oryza sativa) Damanik, Syahrial; Pinem, Mukhtar Iskandar; Pengestiningsih, Yuswani
Jurnal Agroekoteknologi Vol 1, No 4 (2013)
Publisher : Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jaet.v1i4.4509

Syahrial Damanik, Biological agents efficacy test to blight leaf disease Xanthomonas oryzae pv.oryzae on some rice varieties (Oryza sativa). The aim of this research was to find suitablebiological agens to inhibit attack from blight leaf disease and also to discover most resistentvarieties to wants Leaf Blight Disease.This research was conducted using randomized completelydesign (RCD) factorial consisting of two treatment factors and three replications. The first factornamely T0, T1, T2 (Control, Pseudomonas fluorescens, Trichoderma sp with Pseudomonasfluorescens) the second factor’s variety V1, V2, V3 (Inpari 13, Mekongga, Ciherang).The result showed that on Biological agents treatment, the lowest disease intensity occured atTrichoderma sp with Pseudomonas fluorescens of 4.74 % and highest intensity disease occured atControl for 23.14 %. Varieties treatment had the lowest disease intensity in Ciherang for 7.79 %and highest disease intensity in Inpari 13 for 19.06 %. Interaction between biological agents andvarieties had the lowest disease intensity in Trichoderma sp with P. fluorescens and Inpari 13 for3.77 % and highest in Control and Mekongga for 33.97 %. The highest production in biologicalagents treatment occured in Trichoderma sp with P. fluorescens for 7.46 tons/ha and the lowest inControl for 3.63 tons/ha. The highest production on varieties treatment occured in Ciherang for 6.40tons/ha and the lowest in Inpari 13 for 4.98 tons/ha.Keywords : biological agents, varieties, Xanthomonas oryzae pv. oryzae, rice.

Aplikasi Cendawan Endofit terhadap Perkembangan Populasi Nematoda Radopholus similis pada Pisang Barangan Lisnawita Lisnawita; Ahmad Rafiqi Tantawi; Mukhtar Iskandar Pinem
Jurnal Fitopatologi Indonesia Vol 9 No 5 (2013)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Radopholus similis is a major constraint to banana production in the world including Indonesia and growers have relied on nematicides to manage yield losses. The use of endophytic fungi is one method that may reduce the need for nematicides, however little is known on the effective application method of endophytic fungi to control R. similis. The aim of this research was to find out an effective application method of endophytic fungi to reduce R.similispopulation on banana. Fifteen isolates of endophytic fungi originated from banana corm and root collected from banana plantation in North Sumatera were applied to Barangan cultivar by sowing and deeping methods. The isolates was contained of 11 isolates of Fusarium sp. (2BSTMHMM, 3ASTMHP, 5ASP, 1ASU, 4BSP, 4BJP, 5BKJP, 4BSU, 1BJP, 2 BSP, and 4BKJP) and 4 isolates ofTrichoderma sp. (2BSTMHP, 4BSTMHP, 2BSPH, and 2BSTMHH). All of these endophytic fungi were able to suppress the population of R. similis and they had potential to promote plant growth.

KEPARAHAN PENYAKIT BUSUK BUAH KAKAO (Phytophthora palmivora Butl.) PADA BEBERAPA PERKEBUNAN KAKAO RAKYAT YANG BERBEDA NAUNGAN DI KABUPATEN LANGKAT Akhmad Fauzan; Lahmuddin Lubis2 Lahmuddin Lubis2; Mukhtar Iskandar Pinem
Jurnal Agroekoteknologi Vol 1, No 3 (2013)
Publisher : Universitas Sumatera Utara

Disease severity of cocoa black pod (Phytophthora palmivora Butl.) at several smallholder’s cocoa plantations with different shade in Langkat district. The study aims to calculate the disease severity of cocoa black pod (P. palmivora) at several smallholder’s cocoa plantations with different shade in Langkat district. The study was conducted in five smallholder’s cocoa plantations that have different shade in Langkat, which is unshaded cocoa plantation at Karang Anyar village, Secanggang sub-district, suren shaded cocoa plantation at Karang Anyar village, Secanggang sub-district, banana shaded cocoa plantation at Sambirejo village, Binjai sub-district, palm oil shaded cocoa plantation at Sambirejo village, Binjai sub-district, mixed shaded cocoa plantation at Tanah Seribu village, Sei Bingai sub-district with altitude ± 28 m asl and at the Laboratory of Plant Disease Faculty of Agriculture, University of North Sumatera with altitude ± 25 m asl. The method of research is survey. Results showed that highest disease severity of black pod rot found at cocoa that shaded by bananas located in Sambirejo village, Binjai sub-district which reach 73.40 %, and the lowest was founded at cocoa plantation that shaded by suren located in Karang Anyar village, Secanggang sub-district which reach 12.80 %. Keywords : severity, Phytophthora, cocoa, shade.

PENGARUH PENGGUNAAN BEBERAPA MULSA PLASTIK dan VARIETAS TERHADAP SERANGAN PENYAKIT ANTRAKNOSA (Colletotrichum capsicii Sydow.) PADA TANAMAN CABAI (Capsicum annum L.) di LAPANGAN Charles E Ginting 1; Mukhtar Iskandar Pinem; Maryani Cyccu Tobing
Jurnal Agroekoteknologi Vol 1, No 4 (2013)
Publisher : Universitas Sumatera Utara

he influence of the use of plastic mulchs and chili varieties on the attack of antracnose(Colletotrichum capsicii Sydow.) on chili plants (Capsicum annum L.) in the field. The aim of the research was to know the appropriate type of mulchs which could be used to curbthe attack of antracnose and which chili varieties are resistant against antracnose. The researchused Cluster Random Design (CRD) Factorial which consisted of two factors and threerepetitions. The first factor was plastic mulchs: non mulch (M0). silver (M1). and black (M2) the second factor was varieties: Lado F1 (V1). Lembang 1 (V2). Tanjung 2 (V3). The resultshowed that silver black mulch was the best to inhibite antracnose (1.08 %) with Lado F1(1.12%) and the highest on no mulch (7.82 %) with Tanjung 2. Interaction of no mulch andTanjung 2 were lowest (1.70%) and the highest (11.46%) on no mulch and Tanjung 2. Thehighest production (0.72 ton/ha) on silver black mulch with Lado F1 (0.63 to/ha) and the loweston no mulch (0.20 ton/ha) with Tanjung 2 (0.17 ton/ha). Interaction of black silver mulch andLado F1 were highest (0.89 ton/ha) and the lowest (0.15 ton/ha) on no mulch and Tanjung 2. Keywords : plastic mulchs. varieties. antracnose. chili.

UJI EFEKTIVITAS JAMUR ANTAGONIS Trichoderma sp. dan Gliocladium sp. UNTUK MENGENDALIKAN PENYAKIT LANAS (Phytophthora nicotianae) PADA TANAMAN TEMBAKAU DELI (Nicotiana tabaccum L.) Irma Agustina; Mukhtar Iskandar Pinem; Fatimah Zahara
Jurnal Agroekoteknologi Vol 1, No 4 (2013)
Publisher : Universitas Sumatera Utara

The test of the effectiviveness of Trichoderma sp. and Gliocladium sp. antagonism fungi is aimed tocontrol lanas disease (Phytophthora nicotianae) in Deli tobacco plants (Nicotiana tabaccum L.). Theaim of the research was to know the effectiveness of Trichoderma sp. andGliocladium sp.antagonism fungi in controlling lanas disease in Deli tobacco plants. The research wasconducted at Tembakau Deli Research Center of PTPN II Sampali, Medan, from May untilSeptember, 2012. The research used non-factorial RAK (cluster random design) with ten treantmentsand three repetitions: control, P.nicotianae, 5 grams of Trichoderma sp., 10 grams of Trichoderma sp.,15 grams of Trichoderma sp., 20 grams of Trichoderma sp., 5 grams of Gliocladium sp.,10 grams of Gliocladium sp., 15 grams of Gliocladium sp., and 20 grams of Gliocladium sp. The resultof the research showed that the percentage of the highest attack was found in the treatment ofP.nicotianae (25.00%), but there was no symptom (0,00%) in the treatments of control,15 grams of Trichoderma sp., 20 grams of Trichoderma sp., 10 grams of Gliocladium sp.,15 grams of Gliocladium sp., and 20 grams of Gliocladium sp. The highest plant was found in thetreatment of 20 grams of Gliocladium sp. (50,92 centimeters) and the lowest plant was found in thetreatment of P.nicotianae (31,14 centimeters). The largest number of leaves was found in treatment of20 grams of Gliocladium sp. (20,18 leaves), and the smallest number of leaves was found in thetreatment of P.nicotianae (9,25 leaves). The result of the test of Trichoderma sp. and Gliocladium sp.antagonism fungi on P.nicotianae indicated that the growth of both fungi had rapidly developed so thatP.nicotianae tended to get away from antagonism at the media in the laboratory.Keywords: Trichoderma sp., Gliocladium sp., P.nicotianae, Antagonism

UJI EFIKASI AGENS HAYATI TERHADAP PENYAKIT HAWAR DAUN BAKTERI (Xanthomonas oryzae pv. oryzae) PADA BEBERAPA VARIETAS PADI SAWAH (Oryza sativa) Syahrial Damanik; Mukhtar Iskandar Pinem; Yuswani Pengestiningsih
Jurnal Agroekoteknologi Vol 1, No 4 (2013)
Publisher : Universitas Sumatera Utara

Syahrial Damanik, Biological agents efficacy test to blight leaf disease Xanthomonas oryzae pv.oryzae on some rice varieties (Oryza sativa). The aim of this research was to find suitablebiological agens to inhibit attack from blight leaf disease and also to discover most resistentvarieties to wants Leaf Blight Disease.This research was conducted using randomized completelydesign (RCD) factorial consisting of two treatment factors and three replications. The first factornamely T0, T1, T2 (Control, Pseudomonas fluorescens, Trichoderma sp with Pseudomonasfluorescens) the second factor’s variety V1, V2, V3 (Inpari 13, Mekongga, Ciherang).The result showed that on Biological agents treatment, the lowest disease intensity occured atTrichoderma sp with Pseudomonas fluorescens of 4.74 % and highest intensity disease occured atControl for 23.14 %. Varieties treatment had the lowest disease intensity in Ciherang for 7.79 %and highest disease intensity in Inpari 13 for 19.06 %. Interaction between biological agents andvarieties had the lowest disease intensity in Trichoderma sp with P. fluorescens and Inpari 13 for3.77 % and highest in Control and Mekongga for 33.97 %. The highest production in biologicalagents treatment occured in Trichoderma sp with P. fluorescens for 7.46 tons/ha and the lowest inControl for 3.63 tons/ha. The highest production on varieties treatment occured in Ciherang for 6.40tons/ha and the lowest in Inpari 13 for 4.98 tons/ha.Keywords : biological agents, varieties, Xanthomonas oryzae pv. oryzae, rice.

PERTUMBUHAN ISOLAT Phytophthora infestans (Mont.) de Bary TANAMAN KENTANG DAN TOMAT PADA BERBEDA MEDIA DI LABORATORIUM Sri Ahdani Yuta; Mukhtar Iskandar Pinem; Lahmuddin Lubis
Jurnal Agroekoteknologi Vol 2, No 1 (2013)
Publisher : Universitas Sumatera Utara

The growth of Phytophthora infestans (Mont.) de Bary isolate of potato and tomato ondifferent media at Laboratory. This Research was to study the growth of P. infestans on differentmedia at Laboratory. This research was done in Laboratory of Plant disease, AgroecotechnologyProgram Study, Faculty of Agriculture, University of Sumatera Utara, Medan from July toDecember 2012. The method of This research was Completely Randomized Design Factorial withtwelve combinations and two replications. The results showed that the easiest growth isolate ofP. infestans on media was founded potato tubers (I2). The Best growth media of P. infestans wasfounded on media TEA (M3). The fastest growth and diameter of P. infestans was founded inpotato tubers on media TEA (I2M3) and slowest in the potato tubers isolates on PDA (I2M1).Macroscopic and microscopic morphology all isolates are completely same.Keywords: Phytophthora infestans, media, morphology.

UJI DAYA PREDASI Forficula sp. (Dermaptera : Forficulidae) dan Dolichoderus sp. (Hymenoptera : Formicidae) TERHADAP HAMA PERUSAK PUCUK KELAPA Brontispa Longissima Gestro (Coleoptera : Chrysomelidae) di LABORATORIUM Dona Monica Br Bangun; Syahrial Oemry; Mukhtar Iskandar Pinem
Jurnal Agroekoteknologi Vol 3, No 1 (2015)
Publisher : Universitas Sumatera Utara

Coressponding author : E-mail : bangundona@ymail.comABSTRACTResearch on title the predation ability of Forficula sp. (Dermaptera : Forficulidae) andDolichoderus sp. (Hymenoptera : Formicidae) of Brontispa Longissima Gestro.(Coleoptera : Chrysomelidae) in laboratory aimed to study the predation ability of Forficula sp.and Dolichoderus sp. of Brontispa longissima Gestro (Coleoptera : Chrysomelidae) in Laboratory.The experiment design was randomized complete design with 8 treatments and 3 replications.The tested treatment were larvae and imago of B. longissima, 2 Forficula sp, 2 Dolichoderus sp,1 Forficula sp and 1 Dolichoderus sp on 10 larvaes/stoples and 2 Forficula sp, 2 Dolichoderus sp,1 Forficula sp and 1 Dolichoderus sp on 10 imagoes/stoples with. The result showed thatpercentage of mortality and the predators behavior. The results showed that the highest percentageof mortality on P1 (2 Forficula sp. on 10 larvaes/stoples) was 96.67% and the lowest onP01 (larvae control) was 0% and the result showed that Forficula sp. prey mechanism begins withthe introduction of active antenna movement then using forcep (cerci) captureBrontispa longissima Gestro and predator prey Dolichoderus sp. way starts with the runningapproaching pest predators and prey circling approach as the larvae begins to feed through the bodysurface.Keywords : predation, B. longissima Gestro, percentage mortality

UJI DAYA PREDASI Forficula sp. (Dermaptera : Forficulidae) dan Dolichoderus sp. (Hymenoptera : Formicidae) TERHADAP HAMA PERUSAK PUCUK KELAPA Brontispa Longissima Gestro (Coleoptera : Chrysomelidae) di LABORATORIUM Dona Monica Br Bangun; Syahrial Oemry; Mukhtar Iskandar Pinem
Jurnal Agroekoteknologi Vol 2, No 2 (2014)
Publisher : Universitas Sumatera Utara

ABSTRACTResearch on title the predation ability of Forficula sp. (Dermaptera : Forficulidae) andDolichoderus sp. (Hymenoptera : Formicidae) of Brontispa Longissima Gestro.(Coleoptera : Chrysomelidae) in laboratory aimed to study the predation ability of Forficula sp.and Dolichoderus sp. of Brontispa longissima Gestro (Coleoptera : Chrysomelidae) in Laboratory.The experiment design was randomized complete design with 8 treatments and 3 replications.The tested treatment were larvae and imago of B. longissima, 2 Forficula sp, 2 Dolichoderus sp,1 Forficula sp and 1 Dolichoderus sp on 10 larvaes/stoples and 2 Forficula sp, 2 Dolichoderus sp,1 Forficula sp and 1 Dolichoderus sp on 10 imagoes/stoples with. The result showed thatpercentage of mortality and the predators behavior. The results showed that the highest percentageof mortality on P1 (2 Forficula sp. on 10 larvaes/stoples) was 96.67% and the lowest onP01 (larvae control) was 0% and the result showed that Forficula sp. prey mechanism begins withthe introduction of active antenna movement then using forcep (cerci) captureBrontispa longissima Gestro and predator prey Dolichoderus sp. way starts with the runningapproaching pest predators and prey circling approach as the larvae begins to feed through the bodysurface.Keywords : predation, B. longissima Gestro, percentage mortality

UJI EFEKTIFITAS NEMATODA ENTOMOPATOGEN SEBAGAI PENGENDALI PENGGEREK PUCUK KELAPA SAWIT (Oryctes rhinoceros L.) (Coleoptera: Scarabaidae) DI LABORATORIUM Selly Khairunnisa; Mukhtar Iskandar Pinem; Fatimah Zahara
Jurnal Agroekoteknologi Vol 2, No 2 (2014)
Publisher : Universitas Sumatera Utara

Efficacy Test of Entomopathogenic Nematodes as a Controll of Coconut Palm Beetle (Oryctesrhinoceros L.) (Coleoptera : Scarabaidae) in the Laboratory. This research was conducted todetermine the effectiveness of entomopathogenic nematodes. as a controll of O. rhinoceros L.(Coleoptera : Scarabidae) in the Laboratory. This research was carried out in the Laboratoryof Pests and Laboratory of Plant Diseases, Agroecotechnology, Faculty of Agriculture, Universityof North Sumatra from January to March 2013. The method of this research was CompletelyRandomized Design (CRD) non-Factorial which consist of 6 treatments and 3 replications.Treatments being tested were 6 levels of population density Infective Juvenile (JI) of nematodesentomopathogenic (0, 50, 100, 150, 200, 250 JI/ml). The results of this research showed that withpopulation density of nematodes entomopathogenic 200 JI/ml and 250 JI/ml at 144 hours after theapplication is effective for controlling larva mortality O. rhinoceros L. for 85,71% and 100%.The fastest ’s larval mortality time was found with population density of nematodesentomopathogenic 250 JI/ml at 24 hours after the application.Keywords: Oryctes rhinoceros L., oil palm, entomopathogenic nematodes

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