288 research outputs found
Uji Ketahanan Berbagai Varietas Padi (Oryza sativa L.) Terhadap Serangan Nematoda Meloidogyne spp. di Rumah Kasa
No full textKoresy Devanan LT. 2021. Evaluation of Resistance in Rice Varieties (Oryza sativa L.) Against Meloidogyne spp. in The Screen House. Supervised by Lahmuddin Lubis and Lisnawita. This study aim to test the resistance of rice varieties against Meloidogyne spp. This research was conducted in the screen house, Faculty of Agriculture, Universitas Sumatera Utara with a height of ± 25 meters above sea level. The study used 5 rice varieties, namely: Inpari 39, Unsoed 1, Mekongga, Ciherang, and IR 64. The results showed that there were 2 criteria for plant resistance, namely moderately susceptible and moderately resistant. Inpari 39, Unsoed 1, IR 64, and Ciherang varieties were moderately susceptible varieties, while Mekongga was moderately resistant to Meloidogyne spp.Koresy Devanan LT. 2021. Uji Ketahanan Berbagai Varietas Padi (Oryza sativa L.) terhadap Serangan Nematoda Meloidogyne spp. di Rumah Kasa. Dibimbing oleh Lahmuddin Lubis dan Lisnawita. Penelitian bertujuan untuk menguji ketahanan beberapa varietas padi terhadap serangan Meloidogyne spp. Penelitian ini dilaksanakan di Rumah Kasa Fakultas Pertanian Universitas Sumatera Utara dengan ketinggian tempat ±25 meter di atas permukaan laut. Penelitian menggunakan 5 varietas padi yaitu Inpari 39, Unsoed 1, Mekongga, Ciherang, dan IR 64. Hasil penelitian terdapat 2 kriteria ketahanan tanaman yaitu agak rentan, dan agak tahan. Varietas Inpari 39, Unsoed 1, IR 64, dan Ciherang merupakan varietas agak rentan, sedangkan Mekongga merupakan varietas agak tahan terhadap Meloidogyne spp.60 HalamanSkripsi Sarjan
Inventarisasi jamur penyebab penyakit pada tanaman krisan (Chrysanthemum sp.) di Kecamatan Berastagi
No full textDaniel Erikson H. 2013. Inventarization fungus which is caused diseases on
Chrysanthemum sp. in Berastagi. Guided by Lisnawita and Lahmuddin Lubis.
The research aim to know and to inventary fungus that caused Chrysanthemum sp.
disesases in Berastagi. The research conducted at Laboratory of Plant Pathology
Faculty of Agriculture, University of North Sumatera with altitude ±25 m asl.
This research using survey method. The Result of this research showed that
fungus caused Chrysanthemum sp. diseases which culture on field is Puccinia
horiana, Septoria sp., Fusarium sp. at flower, Fusarium sp. at stem whereas
Chrysanthemum sp. which culture in greenhouse is Puccinia horiana and
Septoria sp.50 HalamanSkripsi Sarjan
Tingkat Serangan Ulat Kantung Cremastopsyche pendula Joannis. Terhadap Tanaman Kelapa Sawit Menghasikan dan Belum Menghasilkan di Rambong Sialang Estate PTPP. London Sumatera Indonesia
No full textRonaldo Pangaribuan “Tingkat Serangan Ulat Kantung Cremastopsyche pendula Joannis. Terhadap Tanaman Kelapa Sawit Menghasikan dan Belum Menghasikan di Rambong Sialang Estate PTPP. London Sumatera Indonesia” di bawah bimbingan Marheni dan Lahmuddin Lubis. Cremastopsyche pendula Joannis merupakan ulat kantung pemakan daun kelapa sawit yang merugikan dan dapat menurunkan produktivitas tanaman kelapa sawit. Penelitian bertujuan mengetahui perbedaan tingkat serangan ulat kantung pada kondisi tanaman menghasilkan (TM) dan tanaman belum menghasilkan (TBM). Penelitian dilakukan di Perkebunan Kelapa Sawit PTPP. London Sumatera Indonesia Rambong Sialang Estate di Desa Rambong Sialang Kecamatan Sei Rampah Kabupaten Serdang Bedagai pada Januari sampai Maret 2016. Penelitian ini menggunakan metode systemic random sampling yaitu pengambilan sampel yang dilakukan secara berurutan dengan interval tertentu. Hasil penelitian menunjukkan bahwa serangan hama ulat kantung Cremastopsyche pendula Joannis lebih banyak terjadi pada tanaman muda (TBM) dibandingkan dengan tanaman tua (TM). Persentase serangan tertinggi terdapat pada sampel blok TBM yaitu 13.09% dan persentase serangan terendah terdapat pada sampel blok TM yaitu 3.30%.Ronaldo Pangaribuan "Worm Attack Level Pouch Cremastopsyche pendula Joannis. Palm Oil Plant to generate and yet generate in Rambong beehive Estate PTPP. London Sumatra, Indonesia "under the guidance Marheni and Lahmuddin Lubis. Cremastopsyche pendula Joannis a leaf-eating caterpillars sac palm oil is harmful and can reduce the productivity of oil palm plantations. The study aims to determine differences in the level of caterpillar pockets on the condition of crops to produce (TM) and immature (TBM). The study was conducted in Oil Palm Plantation PTPP. London Sumatra Indonesia Rambong beehive Estate in the village of beehive Rambong Rampah Sei Serdang Bedagai January to March 2016. This study used a systemic random sampling method is sampling is done sequentially with a certain interval. The results showed that the pest caterpillar bag Joannis Cremastopsyche pendula is more common in young plants (TBM) compared to older plants (TM). The highest percentage of attacks are on the block sample TBM is 13,09% and attack percentage was lowest for the sample block TM is 3,30%.Skripsi Sarjan
Tingkat Serangan Ulat Kantung Cremastopsyche pendula Joannis. Terhadap Tanaman Kelapa Sawit Menghasikan dan Belum Menghasilkan di Rambong Sialang Estate PTPP. London Sumatera Indonesia
No full textRonaldo Pangaribuan “Tingkat Serangan Ulat Kantung Cremastopsyche pendula Joannis. Terhadap Tanaman Kelapa Sawit Menghasikan dan Belum Menghasikan di Rambong Sialang Estate PTPP. London Sumatera Indonesia” di bawah bimbingan Marheni dan Lahmuddin Lubis. Cremastopsyche pendula Joannis merupakan ulat kantung pemakan daun kelapa sawit yang merugikan dan dapat menurunkan produktivitas tanaman kelapa sawit. Penelitian bertujuan mengetahui perbedaan tingkat serangan ulat kantung pada kondisi tanaman menghasilkan (TM) dan tanaman belum menghasilkan (TBM). Penelitian dilakukan di Perkebunan Kelapa Sawit PTPP. London Sumatera Indonesia Rambong Sialang Estate di Desa Rambong Sialang Kecamatan Sei Rampah Kabupaten Serdang Bedagai pada Januari sampai Maret 2016. Penelitian ini menggunakan metode systemic random sampling yaitu pengambilan sampel yang dilakukan secara berurutan dengan interval tertentu. Hasil penelitian menunjukkan bahwa serangan hama ulat kantung Cremastopsyche pendula Joannis lebih banyak terjadi pada tanaman muda (TBM) dibandingkan dengan tanaman tua (TM). Persentase serangan tertinggi terdapat pada sampel blok TBM yaitu 13.09% dan persentase serangan terendah terdapat pada sampel blok TM yaitu 3.30%.Ronaldo Pangaribuan "Worm Attack Level Pouch Cremastopsyche pendula Joannis. Palm Oil Plant to generate and yet generate in Rambong beehive Estate PTPP. London Sumatra, Indonesia "under the guidance Marheni and Lahmuddin Lubis. Cremastopsyche pendula Joannis a leaf-eating caterpillars sac palm oil is harmful and can reduce the productivity of oil palm plantations. The study aims to determine differences in the level of caterpillar pockets on the condition of crops to produce (TM) and immature (TBM). The study was conducted in Oil Palm Plantation PTPP. London Sumatra Indonesia Rambong beehive Estate in the village of beehive Rambong Rampah Sei Serdang Bedagai January to March 2016. This study used a systemic random sampling method is sampling is done sequentially with a certain interval. The results showed that the pest caterpillar bag Joannis Cremastopsyche pendula is more common in young plants (TBM) compared to older plants (TM). The highest percentage of attacks are on the block sample TBM is 13,09% and attack percentage was lowest for the sample block TM is 3,30%.Skripsi Sarjan
Pengaruh Penyinaran Ultra Violet terhadap Patogenitas Fusarium Moniliforme Penyebab Penyakit Pokahbung pada Tanaman Tebu
No full textFahmy Fadly. 2017. “Effect of Ultraviolet Irradiation on the Pathogenicity of
Fusarium moniliforme Pokkahboeng Disease on Sugar Cane”. Supervised by
Lahmuddin Lubis and Lisnawita. Pokkahboeng is the important disease on
sugarcane and can reduce sugar production. This research was study to determine
the effect of UV to pathogenicity of F. moniliforme. This research had been
conducted at green house of University of Sumatera Utara for July-October 2016
using completely randomized design (CRD) nonfactorial with five treatments are
M0, M1, M2, M3, M4 (Without UV exposure, UV exposure for 15, 30, 45, and 60
minutes) with five replications and 3 units. The results showed that UV radiation is
able to change the color pigment F. moniliforme isolates, Pathogenicity of F.
moniliforme was declined after UV radiation and UV irradiation for 45 minutes is
the most efficient time to suppress the pathogenicity F.moniliforme.48 HalamanSkripsi Sarjan
Pengelolaan Tanaman Terpadu untuk Mengendalikan Penyakit Hawar Daun (Helminthosporium Turcicum.pass) pada Tanaman Jagung (Zea Mays L.) di Tanah Karo
No full textLITA NASUTION, PENGELOLAAN TANAMAN TERPADU UNTUK
MENGENDALIKAN PENYAKIT HAWAR DAUN ( Helminthosporium turcicum
Pass.) PADA TANAMAN JAGUNG (Zea mays. L) Dt TANAH KARO, dibawah
bimbingan Bapak Ir. Lahmuddin Lubis, MP selaku ketua komisi pembimbing
dan Bapak Ir. Kasmal Aripin MSi selaku anggota komisi pembimbing.
Penelitian ini bertujuan untuk mengetahui pengaruh pengelolaan tanaman
terpadu dan teknik pengendalian yang paling efektif dalam mengendalikan
penyakit hawar daun (H. turcicum).
Penelitian ini dilaksanakan di Kabupaten Tanah Karo dengan ketinggian
tempat + 1350 m dpl. Rancangan yang digunakan adalah Rancangan Petak
Terpisah (RPT), terdiri dari 2 faktor. Faktor | fungisida terdiri dari 3 taraf
perlakuan ; Fo (kontrol ), F1 (Fungisida Score 250 EC) dan F2 (Fungisida Dithane
M- 45 80 WP) dan faktor ke II yaitu varietas terdiri dari 5 taraf perlakuan yaitu Vs
(Bisi 7), V2 (Pioneer 15), V3(Cargill 7), V4 (Pioneer 12) dan V5 (Cargill 9)
Parameter yang diamati intensitas serangan (%),jumiah klorofil (mm), luas daun
(cm2), dan tinggi tanaman (cm) dan Produksi (g)98 HalamanSkripsi Sarjan
Uji Efektifitas Pestisida Nabati Untuk Mengendalikan Penyakit Bercak Ungu (Alternaria Porri Ell. Cif) Pada Bawang Merah (Allium Ascalonicum L.) Di Lapangan
No full textGinman Simanihuruk “ UJI EFEKTIVITAS PESTISIDA NABATI
UNTUK MENGENDALIKA PENYAKIT BERCAK UNGU
(Alternaria porri Ell. Cif.) PADA BAWANG MERAH
(Allium ascalonicum L.) DI LAPANGAN” with the conselling
Mr. Ir. Lahmuddin Lubis MP. as a leader and Mrs. Ir. Zulnayati as
co-author.
The object of the study is to know some effectivenes fungicides
againts plant purple strain disease Alternaria porri Ell. Cif on red onion.
The reseach was done in Tongging, Kabupaten Karo above 500
m from sea level. Reseach starting in April until July 2007.
Reseach applies Non Factorial Randomized Block Design (Non
Factorial RAK) which consist of F0 (control/non act), F1 (Sirih leaf
extracts), F2 (Mimba leaf extracts), F3 (Gambir) and F4 (fungicide Dithane
M-45 80 WP) as compared. The parameter perceived intensity attack (%)
percentage of attack (Alternaria porri) and shallot production (Ton/ha).
The result of the study shows that values of natural fungicides,
significantly influences after aplication to the intensity of attack from
Alternaria porri Ell. Cif. The highest value range of each found on act F3
(gambir) about 18,72 % and the lowest found on F1 (sirih leaf extracts)
about 15,67 %. Highest production found on F1 about 10,4 Ton/Ha and
lowest found on F3 about 9,36 Ton/Ha.42 HalamanSkripsi Sarjan
Waktu Aplikasi Trichoderma harzianum Rifai dalam berbagai Substrat untuk Menekan Penyakit Busuk pangkal batang (Sclerotium rolfsii sacc.) pada Tanaman Kedelai (Glycine max (L.) Merill di Lapangan
No full textIlham Roh Tuah Damanik,“ The time application
Trichoderma harzianum Rifai in some substrat to supress Sclerotium rolfsii Sacc.
on soybean (Glycine max (L.) Merill) in Field”, supervisor by
Ir. Mukhtar Iskandar Pinem, M. Agr. And Ir. Lahmuddin Lubis, MP. This aims of
the research was to know The best time application Trichoderma harzianum Rifai
with substrat to supress Sclerotium rolfsii Sacc. on soybean. This research was
done in BPTP , Medan at August until December 2010. This reseach use factorial
randomized blok design, the treatment were the time aplication and substrat of
Trichoderma harzianum RifaI with 12 treatments combination and 3 replications.
The research showed the highest disease incidence at S0T1 and S0T2 (control)
was 10.02 % and the lowest at S1T1 was 0,71%. The highest production was at
S1T1 (bran and the time aplication one week befor inokulasi
Sclerotium rolfsii Sacc.) with 50,50g/plant and the lowest at S0T1 (control) with
2,92 g/plant.92 HalamanSkripsi Sarjan
Uji Efektifitas Pestisida Nabati Untuk Mengendalikan Penyakit Bercak Ungu (Alternaria Porri Ell. Cif) Pada Bawang Merah (Allium Ascalonicum L.) Di Lapangan
No full textGinman Simanihuruk “ UJI EFEKTIVITAS PESTISIDA NABATI
UNTUK MENGENDALIKA PENYAKIT BERCAK UNGU
(Alternaria porri Ell. Cif.) PADA BAWANG MERAH
(Allium ascalonicum L.) DI LAPANGAN” with the conselling
Mr. Ir. Lahmuddin Lubis MP. as a leader and Mrs. Ir. Zulnayati as
co-author.
The object of the study is to know some effectivenes fungicides
againts plant purple strain disease Alternaria porri Ell. Cif on red onion.
The reseach was done in Tongging, Kabupaten Karo above 500
m from sea level. Reseach starting in April until July 2007.
Reseach applies Non Factorial Randomized Block Design (Non
Factorial RAK) which consist of F0 (control/non act), F1 (Sirih leaf
extracts), F2 (Mimba leaf extracts), F3 (Gambir) and F4 (fungicide Dithane
M-45 80 WP) as compared. The parameter perceived intensity attack (%)
percentage of attack (Alternaria porri) and shallot production (Ton/ha).
The result of the study shows that values of natural fungicides,
significantly influences after aplication to the intensity of attack from
Alternaria porri Ell. Cif. The highest value range of each found on act F3
(gambir) about 18,72 % and the lowest found on F1 (sirih leaf extracts)
about 15,67 %. Highest production found on F1 about 10,4 Ton/Ha and
lowest found on F3 about 9,36 Ton/Ha.42 HalamanSkripsi Sarjan
“ Uji Ketahanan Beberapa Klon Tanaman Karet (Hevea brassiliensis Muel. Arg.) terhadap 3 Isolat Penyakit Gugur Daun (Colletotrichum gloeosporioides Penz. Sacc.) di Laboratorium
No full textSilvia Darina “ Uji Ketahanan Beberapa Klon Tanaman Karet (Hevea
brassiliensis Muel. Arg.) Terhadap 3 Isolat Penyakit Gugur Daun
(Colletotrichum gloeosporioides Penz. Sacc.) Di Laboratorium “ with the
conselling Mr. Ir. Lahmuddin Lubis, MP as a leader, Mr. Ir. Kasmal Aripin, Msi
as co-author, Mr. Ir. Aidi Daslin, Sagala, MS as a conselling field and Mrs. Zaida
Fairuzah, Sp as a conselling field. The research was conducted in Laboratory
Plant Protection Sungai Putih Research Center since July to September 2008. The
aims of the research was to know different resistant rubber comersial klons to 3
rd
isolate fall of leaf disease (C. gloeosporioides Penz. Sacc.). The research used the
method of complete factorial random design with 40 combine of treatmentand 3
repeats. Clones that used were BPM 24, PB 260, BPM 1, RRIC 100, PB 330,
IRR 118, IRR 104, BPM 107, BPM 109, PB 217. C. gloeosporioides isolate from
Sumut (Sungai Putih), Palembang (Sembawa), Jawa tengah (Salatiga), and control
(used aquadest steril). The result of research showed that the clone BPM 109 (K9)
is a resistant clone, clone BPM 24 (K1) is a moderat clone, and the other clones
were is a middle resistant. Periode latent to all isolate except control to 2 hsi was a
clone BPM 24 and BPM 1. Isolate from Salatiga showed a high virulence if
compared with isolate from Sembawa, Sungai Putih and Control.57 HalamanSkripsi Sarjan
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