Jurnal Agrista
Not a member yet
273 research outputs found
Sort by
BUDIDAYA TANAMAN JAGUNG PADA LAHAN BERPENUTUP TANAH KACANGAN DISERTAI PEMUPUKAN NITROGEN
Full text linkA field experiment has been conducted at Kebun Percobaan IPB Darmaga Bogor, with an altitude of 250 m and the soil type is latosol. The aim of experiment was to find out the growth and the yield of corn plante on land with leguminous cover crop of 2 weeks old at the time the corn seeds being planted. Statistically, randomized block design with 2 factors was used in the experiment. The first factor was the leguminous comprised of without legumes, Calopogonium caeruleum and Centrocema pubescens. The second factor namely the application of Nitrogen : 0, 60, 120, and 180 kg N/ha. The plot size was 8 m x 5 m, and three replication. In one plot, there were 5 rows of legumes. The corn was planted in 4 rows between the legumes with 25 cm distance in the row. The result of the experiment showed that the value of the parameters growth, yield and shelled corn product in the intercropping system were higher than that planted without cover crop. The highest shelled corn (3,85 ton/ha) was attained from treatment without leguminous and without Nitrogen applications. The cover crop hindered from growth of seeds, and dry weight of weeds obtained from the plot with cover crop was than that obtained from without cover crop
ANALYSIS OF HYPERSPECTRAL DATA OF COTTON TO ESTIMATE VEGETATION INDICES UNDER DIFFERENT SOIL FERTILITY RATE
Full text linkKesuburan tanah sangat penting untuk pertumbuhan kapas. Status kesuburan tanah akan mempengaruhi dosis pemupukan pada tanah. Distribusi spasial kesuburan tanah dilapangan akan mempengaruhi produktifitas. Oleh karena itu, data laboratorium pengindraan jauh dapat digunakan untuk mendeteksi dan menganalisis kesuburan tanah yang mempengaruhi pertumbuhan kapas. Tujuan penelitian ini adalah untuk menunjukkan bahwa pengukuran data hyperspectral dapat memberikan petunjuk perbedaan pertumbuhan pada tingkat kesuburan tanah yang berbeda dengan melakukan analisa index tanaman. Spetraradiometer didisain untuk mengoleksi septrum tanaman dibawah tingkat kesuburan tanah yang berbeda telah diuji cobakan. Beberapa rumus index tanaman digunakan dalam penelitian ini
EKSPLORASI DAN POTENSI CENDAWAN ENDOFIT ASAL TANAMAN PALA (Myristica fragrans Houtt) SEBAGAI AGENS PENGENDALI HAYATI PENYAKIT MATI RANTING
Full text linkAbstrak,Di Aceh, tanaman pala merupakan tanaman rempah yang sudah sejak lama dikenal sebagai komoditas unggulan (Ikon) Kabupaten Aceh Selatan. Namun dalam beberapa tahun belakangan ini, ribuan tanaman pala di Aceh selatan meranggas dan mati diserang oleh penyakit yang sampai saat ini belum dapat ditangani sehingga berakibat pada penurunan produksi pala. penelitian ini bertujuan untuk menguji cendawan endofit potensial untuk mengendalikan penyakit mati ranting pada tanaman pala secara in vitro maupun in vivo. Penelitian ini dilakukan di Laboratorium Penyakit Tanaman Jurusan Agroekoteknologi Universitas Syiah kuala - Banda Aceh. Waktu penelitian dimulai bulan Maret 2014 sampai dengan selesai. Pelaksanaan penelitian diawali dengan pengambilan sampel di 3 (tiga) kecamatan di Kabupaten Aceh Selatan, isolasi cendawan endofit, pemurnian (Purifikasi), perbanyakan cendawan patogen CP1. Tahapan selanjutnya dilakukan uji patogenisitas pada benih padi, pengujian daya antagonisme (Duel culture), pengujian mekanisme parasitisme, pembuatan sampel konidia cendawan endofit, indentifikasi terhadap cendawan endofit, perbanyakan cendawan endofit untuk pengujian di rumah kasa . Rancangan percobaan penelitian menggunakan rancangan acak lengkap (RAL) 6 perlakuan dengan 7 ulangan. Berdasarkan hasil penelitian ini dapat disimpulkan bahwa pemberian isolat cendawan endofit TTA2 dan TTA3 mampu menekan patogen CP1 dalam secara in vitro dan in vivo. Pemberian cendawan endofit juga merangsang pertumbuhan akar yang baik bagi tanaman.Eksploration and Potential of Endohphytic Fungi from Nutmeg as a Biological Control Agent of Twigs Dead DiseaseAbstract, In Aceh, nutmeg is a spice plant that has long been known as a superior commodity (Icon) of South Aceh District. But in recent years, thousands of nutmeg plants in southern Aceh have been molested and died from disease which has not yet been treated, which has resulted in a decline in nutmeg production. This study aims to test the potential endophytic fungi to control dead dead branches in nutmeg plants in vitro and in vivo. This research was conducted at the Plant Disease Laboratory of the Agroecotechnology Department, Syiah kuala University - Banda Aceh. When the study began in March 2014 until completion. The research was begun by taking samples in 3 (three) districts in South Aceh Regency, isolation of endophytic fungi, purification, propagation of CP1 fungal pathogens. The next stage is the pathogenicity test on rice seeds, testing the antagonism power (Duel culture), testing the parasitism mechanism, making a sample of endophytic fungi conidia, identification of endophytic fungi, multiplication of endophytic fungi for testing in the gauze. The experimental design of the study used a completely randomized design (CRD) of 6 treatments with 7 replications. Based on the results of this study it can be concluded that the administration of TTA2 and TTA3 endophytic fungi isolates was able to suppress pathogenic CP1 in in vitro and in vivo. Giving endophytic fungi also stimulates root growth which is good for plants
INTERAKSI ANTARA VARIASI KONSENTRASI HORMON BAP (6-benzylaminopurine) DAN INTENSITAS PENYINARAN MATAHARI PADA PERTUMBUHAN BIJI SERDANG (Livistona chinensis (Jack.) R. Br. Ex Martelii)
Full text linkA Study of interaction between hormone BAP dosages (0; 2; 3 and 4 mg/l) and light intensities (50; 60 and 70%) on growth of sedang (L. chinensis) seeds was carried out at Puspiptek Serpong Botanic Garden. In this study the single treatment (light intensity) showed significantly different (5%). However, on the interaction treatments were not significant. Although the highest of all parameters observed (growth percentage, plant height, total leaves and leaf length) were showed by combination treatments between 3 mg/l BAP and 70% light intensity, while the lowest were showed by control
PENGARUH UMUR PINDAH BIBIT DAN DOSIS PUPUK NPK DENGAN PENAMBAHAN PUPUK HAYATI TERHADAP PERTUMBUHAN DAN HASIL KUBIS BUNGA (Brassica oleraceae L.)
Full text linkPenelitian ini bertujuan untuk mengetahui umur pindah bibit dan dosis Pupuk NPK Mutiara dengan penambahan pupuk hayati terhadap pertumbuhan dan hasil tanaman kubis bunga.Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) pola faktorial 2x4 dengan 3 ulangan. Ada 2 faktor yang diteliti yaitu : faktor Umur Pindah Bibit yang terdiri dari 28 HSS dan 21 HSS, serta faktor Dosis Pupuk NPK Mutiara dengan Penambahan Pupuk Hayati terdiri dari 100% NPK + 0 ml TGH, 75% NPK + 10 ml TGH/l air, 50% NPK + 10 ml TGH/l air dan 25% NPK + 10 ml TGH/l air.Pelaksanaan penelitian meliputi persemaian, persiapan areal penanaman, pemupukan, penanaman, pemeliharaan, pemanenan dan pengamatan. Pengamatan dilakukan terhadap pertumbuhan dan hasil tanaman kubis bunga, yang terdiri dari tinggi tanaman umur 15, 30 dan 45 HST, Diameter pangkal batang umur 15, 30 dan 45 HST, jumlah daun per tanaman umur 15, 30 dan 45 HST, berat bunga per plot netto dan diameter bunga. Hasil penelitian menunjukkan umur pindah bibit berpengaruh sangat nyata terhadap tinggi tanaman umur 15 HST dan jumlah daun per tanaman umur 15 HST dan bepengaruh nyata terhadap jumlah daun per tanaman umur 30 HST. Pertumbuhan dan hasil tanaman kubis bunga cenderung lebih baik dijumpai pada perlakuan umur pindah bibit 28 HSS.Dosis pupuk NPK Mutiara dengan penambahan TGH berpengaruh nyata terhadap tinggi tanaman umur 30 HST. Pertumbuhan dan hasil tanaman kubis bunga cenderung lebih baik dijumpai pada perlakuan dosis pupuk 100% NPK+ 0 ml TGH.Terdapat interaksi yang sangat nyata antara perlakuan umur pindah bibit dan dosis pupuk NPK Mutiara dengan penambahan TGH terhadap berat bunga per tanaman dan terdapat interaksi yang nyata terhadap tinggi tanaman 15 dan 30 HST, diameter pangkal batang umur 15, 30 dan 45 HST, jumlah daun per tanaman umur 30 HST dan diameter bunga
PENGARUH JENIS PUPUK ORGANIK PADA PEMBIBITAN TANAMAN KOPI (Coffee sp)
Full text linkAbstractThis study was to determine the effect of adding several types of organic fertilizers to the nursery media for coffee plants. It is expected that data will be obtained that can describe the growth of coffee plant seeds (Coffee sp) well so that superior coffee plant seeds will be produced. The method used was an experimental method using a non factorial randomized block design consisting of 4 planting media treatments that were repeated 3 times. As a growing medium used land (M0); soil + vermicompost (M1); soil + quail dung (M2) and soil + biochar (M3). The parameters observed were, wet weight and dry weight of the plant and root canopy ratio. The nursery was carried out for 5 months. In the parameters of wet weight and plant dry weight analysis of variance showed that media treatment had a very significant effect, namely on the M1 treatment. Whereas the root canopy ratio parameters did not show any effect, although the M1 treatment tended to show the lowest root canopy ratio, which means that the seedlings of this plant had an indication of a better root system
RESPON PERKECAMBAHAN BENIH SINTETIK TANAMAN NILAM (Pogostemon cablin Benth.) TERHADAP PEMBERIAN KONSENTRASI ALGINAT DAN NAA SINTETIK TANAMAN
Full text linkPenelitian ini dilakukan untuk mengetahui perkecambahan benih sintetik tanaman nilam (Pogostemon cablin Benth.) dengan penambahan beberapa konsentrasi alginat dan NAA (-Naphthaleneacetic acid). Penelitian telah dilaksanakan di Laboratorium Bioteknologi, Fakultas Pertanian, Universitas Sultan Ageng Tirtayasa pada bulan Maret - Mei 2017. Rancangan Acak Lengkap (RAL) secara faktorial digunakan dalam penelitian ini. Faktor pertama adalah konsentrasi alginat (A) dengan tiga taraf yaitu: 2% (A1), 3% (A2) dan 3% (A3). Faktor kedua adalah konsentrasi NAA (N) dengan tiga taraf yaitu 1 mg/l (N1), 2 mg/l (N2) dan 3 mg/l (N3). Dilakukan ulangan sebanyak 3 kali, sehingga diperoleh 27 satuan percobaan. Eksplan yang digunakan untuk pembuatan benih sintetik berasal dari tunas tanaman nilam hasil kultur jaringan. Hasil penelitian menunjukkan bahwa konsentrasi Alginat 4% memberikan pengaruh yang terbaik terhadap perkecambahan benih sintetik nilam (pada parameter jumlah benih berkecambah (2,44 buah), jumlah tunas (2,67 buah) dan persentase benih berkecambah (12,78%)). Konsentrasi NAA yang diberikan tidak berpengaruh terhadap perkecambahan benih sintetik tanaman nilam. Demikian pula interaksi antara pemberian Alginat dan NAA tidak menunjukkan pengaruh terhadap seluruh peubah yang diamati.(Response germination of synthetic seeds from patchouli plants (Pogostemon Cablin Benth.) to the concentration of Alginate and NAAThis research was conducted to find out the germination of patchouli seed seeds (Pogostemon cablin Benth.) By adding some concentration of alginate and NAA (-Naphthaleneacetic acid). The research was conducted at the Biotechnology Laboratory, Faculty of Agriculture, Sultan Ageng Tirtayasa University in March-May 2017. Completely Randomized Design (RAL) was used in this study. The first factor is the concentration of alginate (A) with three levels, namely: 2% (A1), 3% (A2) and 3% (A3). The second factor was the concentration of NAA (N) with three levels, ie 1 mg / l (N1), 2 mg / l (N2) and 3 mg / l (N3). Replication 3 times, then obtained 27 units of experiments. The explants used to make synthetic seeds are derived from patchouli shoots from tissue culture. The results showed that Alginate 4% concentration gave the best effect of germination of patchouli encapsulation. The best response of the parameters of the number of seeds germinated (2.44 pieces), the number of shoots (2.67 pieces) and the germination percentage (12.78%)). NAA concentration has no significant effect on synthetic seed germination. Similarly, the interaction between Alginate and NAA gave no significant effect on all observed variable
RESPON TANAMAN JAGUNG TERHADAP BEBERAPA METODE PENGENDALIAN GULMA DI LAHAN TANPA OLAH TANAH
Full text linkAbstrak, Perlakuan herbisida glifosat dan paraquat berpengaruh terhadap bobot kering gulma, efikasi herbisida terhadap gulma, tinggi tanaman, jumlah daun, diameter batang, diameter tongkol, bobot tongkol dan bobot biji per tongkol , hasil jagung dan tidak berpengaruh terhadap pengamatanpanjang tongkol. Perlakuan TOT dengan menggunakan glifosat dan paraquat dapat menekan pertumbuhan gulma dan memacu pertumbuhan tanaman jagung. Perlakuan herbisida glifosat dengan dosis 1,64 L ha-1 cukup efektif dalam menekan gulma dan menghasilkan panen tertinggi 7,93 ton ha-1dan perlakuan herbisida paraquat dengan dosis 3,6 L ha-1 efektif dalam mengendalikan gulma dan meningkatkan pertumbuhan serta hasil panen jagung sebanyak 7,13 ton ha-1.Corn Plant Response to Several Weed Control Methods on Land Without TillageAbstract,The treatment of glyphosate and paraquat herbicides affected weed dry weight, efficacy of herbicides on weeds, plant height, number of leaves, stem diameter, ear diameter, ear weight and seed weight per ear, corn yield and did not affect the observation of cob length. The TOT treatment using glyphosate and paraquat can suppress the growth of weeds and spur the growth of corn plants. Glyphosate herbicide treatment with a dose of 1.64 L ha-1 is quite effective in suppressing weeds and yields the highest yield of 7.93 tons ha-1 and the treatment of paraquat herbicide with a dose of 3.6 L ha-1 is effective in controlling weeds and increasing growth and yield corn as much as 7.13 tons ha-1
EFEKTIVITAS CENDAWAN ENDOFIT ASAL AKAR TANAMAN KENTANG dalam MEDIA KOMPOS KULIT KOPI untuk MENEKAN PERKEMBANGAN PENYAKIT HAWAR DAUN KENTANG (Phytophtora infestans)
Full text linkAbstrak, Penyakit hawar daun kentang disebabkan oleh jamur Phytophthora infestans merupakan salah satu penyakit penting pada tanaman kentang. Penurunan produksi kentang karena serangan jamur P. infestans dapan mencapai 90%. Sampai saat ini serangan patogen P.infestans merupakan masalah penting dan belum ada fungisida yang benar-benar efektif terhadap penyakit tersebut. Penelitian ini bertujuan untuk menguji efektivitas cendawan endofit asal akar tanaman kentang dalam menekan perkembangan penyakit hawar daun kentang P.infestans yang dilaksanakan di University Farm Stasiun Riset Bener Meriah (UFBM) Universitas Syiah Kuala desa Tunyang Kecamatan Timang Gajah Kabupaten Bener Meriah dari bulan Mei sampai dengan Oktober 2014. Metode yang digunakan adalah metode eksperimen. Hasil penelitian ini menunjukkan bahwa cendawan endofit asal akar tanaman kentang dalam media kompos kulit kopi dapat menekan perkembangan penyakit hawar daun yang disebaban oleh P. infestans, cendawan endofit asal akar tanaman kentang dalam media kompos kulit kopi. Hasil terbaik terdapat pada isolat cendawan endofit B9 dengan intensitas serangan patogen P. infestans 48,00 %, intensitas kerusakan tanaman kentang akibat patogen P. infestans dan 2,60 %, bobot umbi sehat 332,4 gramEndophytic Fungus effectiveness Origin Root Crops Potatoes in Compost Media Skin Diseases Coffee to Suppress Development Potato Leaf blight (Phytophtora infestans)Abstract,Potato leaf blight caused by Phytophthora infestans is one of the important disease of potato. Decline in potato production due to P. infestans fungus attack can both reach 90% P.infestans pathogens is an important issue and there are no fungicides were effective against the disease until now. This study aimed to test the effectiveness of endophytic fungus origin from roots of potato plants in suppressing the development of potato blight disease cause by P.infestans. The University Farm Research Station (UFBM) UNSYIAH located in the village Tunyang Timang Gajah. District of Bener Meriah Aceh. The experimental methods were used in this experiment. The results indicate that the endophytic fungus origin from roots of potato plants in coffee bark compost medium can suppress the development of late blight disease that caused by P. infestans. The best results were shown on isolates of endophytic fungi B9 which disease 48.00%, disease severity 2.60%, healthy tuber weight 332.4 gram
Identification and Analysis of Landslide Characteristics Out of the Agriculture in Garut Regency
Full text linkBased on the data of earthquake disaster events in Indonesia for the last 12 years then West Java Province was most often experienced landslide disaster. Land movement map of Garut Regency issued by Directorate of Volcanology and Geological Hazard Mitigation (DVMG), indicated Garut included in the category of vulnerability zone of high ground movement, among others: District Banjarwangi, Singajaya and Peundeuy. This study aimed to identify and analyzed the characteristics of landslides in Garut regency, especially in three districts. The first phase of this study conducted a literature study on various factors causing landslides, followed by making a list of fields as a guide in the field. The identification of landslides was done descriptively. Various factors suspected to be the cause of the landslide were identified and analyzed. Based on the results of observation for 14 months at 32 landslide point that occurred in the research area, there were 2 landslide characteristic encountered, namely 1. Soil scrolling (30 cases or 94%) and 2. Decreased / subsidence (2 cases or 6%). The highest landslide was found on paddy fields as much as 25 dots, followed by mixed gardens (talun) as much as 4 points, in the settlement / infrastructure found 2 points and one season plantation garden