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All Journal AGROEKOTEKNOLOGI Jurnal Penelitian Karet

Nini Rahmawati

Universitas Sumatera Utara

Author-ID : 2980388

Agriculture, Biological Sciences & Forestry Education

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TANGGAPPERTUMBUHANSTUMP MATA TIDURKARET TERHADAP KOMPOSISI MEDIA TANAM DAN PEMUPUKAN NPK ORGANIK Mahfriza Fansuri Mahfriza FansuriQ; Irsa Irsa; Nini Rahmawati
Jurnal Agroekoteknologi Vol 1, No 4 (2013)
Publisher : Universitas Sumatera Utara

The aim of the research is to know the response of rubber budded stump growth of the compositionsof growing media and organic NPK fertilization. It was conducted at Kuala Bingai Village, Stabat,regency of Langkat about 15 m sea level on May to August 2012 by using arandomized blockdesignfactorialtwofactorsthat is organic NPK fertilization (0, 50, 100, 150 g/polybag) and thecomposition of growing media (subsoil, subsoil+compost of blotong sugar cane andsubsoil+compost of blotong sugar cane+sand). The parameters observed were percentage stump ofshoot, speed of eye stump out, shoot lenght,number of leaves, shoot grith, percentage of stump oneumbrella leaf’s and total leaves width.The result of research showed that compositions of growthmedia and organic NPK fertilization showed no significant effects for all parameters. Interaction ofboth treatments influenced significantly on shoot lenght 8 and 12 MST and shooth grith 6-10 MST.Key words : organic NPK, growing media, rubber budded stump

RESPONS PERTUMBUHAN STUM MATA TIDUR KARET (Hevea brasiliensis Muell Arg.) DENGAN PEMBERIAN AIR KELAPA DAN PUPUK ORGANIK CAIR Prihyanti Lasma E. Sinaga; Charloq Charloq; Nini Rahmawati
Jurnal Agroekoteknologi Vol 2, No 1 (2013)
Publisher : Universitas Sumatera Utara

One of the problem encountered in rubber cultivation by rubber budded stump is high deathpercentage of stum in field. The research aim was to obtain useful rubber germ by cococut water soakand liquid organic fertilizer. The research was conduted at Kelurahan Pulo Brayan Bengkel Baru,Kecamatan East Medan (+ 25 meter above sea level) on June to October 2012.Completely randomized design with two factors and three replications. The first factor isthe duration coconut water soak (0, 12, 24 hour) and the second factor is liquid organic fertilizer(0, 20, 40, and 60 cc/plant). Parameters observated were percentage of break bud in field, time of brekbud, height of bud, diameter of bud, amount of leaf, root drived weight, shoot drived weight andpercentage of amount the death of stump at field. The result showed that period of coconut watersoak significantly affect the to percentage of broken bud 2 weeks after plant and the time of brek therubber bedded stump. The liquid organic fertilizer significantly affect to time of break stump, heightof bud, and shoot drived weight. Interaction of coconut water and liquid organic ferlilizer was notsignificantly effect to all paremeters. The best sit of coconut water is 12 hour and dose of liquidorganic fertilizer is 60 cc/plant.Key word : rubber budded stump, coconut water, liquid organic water, growth

RESPONS PERTUMBUHAN DAN PRODUKSI KACANG TANAH TERHADAP PEMBERIAN KOMPOS JERAMI PADI DAN FUNGI MIKORIZA ARBUSKULA Tua Bastari Prima Bangun; Nini Rahmawati; Meiriani Meiriani
Jurnal Agroekoteknologi Vol 2, No 1 (2013)
Publisher : Universitas Sumatera Utara

Growth Response and Yield of Peanut with Straw Compost and Mycorhiza Vesicular ArbuscularApplication. This research aims to study response in growth and yield of peanut for giving strawcompost and mycorhiza vesicular arbuscular. This research conducted on community land locatedat Pasar 1 Street, Tanjung Sari with altitude ± 25 meters above sea level in June until September2012 using Randomized Block Design (RBD) factorial with two factors , which are straw compostdoses (0, 750, 1500, 2250 g per plot) and mycorhiza vesicular arbuscular (0, 10 g micofer perplanting hole). The parameters observed were plant height, number of branches, weight of pods perplot and 100 seeds weight. The results showed that straw compost significantly affected plant height4-12 weeks after planting, and weight of pods per plot. Mycorhiza vesicular arbuscular andinteraction of them not significantly affected on all parameters observed.

EFEKTIVITAS BEBERAPA JENIS FUNGI MIKORIZA ARBUSKULAR TERHADAP PERTUMBUHAN TANAMAN KARET (Hevea brassiliensis Muell. Arg.) DI PEMBIBITAN The effectivity some type Arbuscular Mychorrizal Fungi on rubber (Hevea brassiliensis Muell. Arg.) growth in seedlings Perdana Roy Oksemsa Purba; Nini Rahmawati; Emmy Harso Kardhinata; Asmarlaili Sahar
Jurnal Agroekoteknologi Vol 2, No 2 (2014)
Publisher : Universitas Sumatera Utara

The application of chemical fertilizer is often selected by farmer to increase the rubber growth.However the uses of chemical fertilizer in process of time will bit into land fertility caused the deathof microbe in the ground and the land condition will be solid, it caused root plants can not absorb anutrition. So the application of biological fertilizer like AMF expected to replace chemical fertilizerto increase a rubber growth in continuing time. This research had been conducted in plastic house ofthe Agriculture Faculty, University of North Sumatra (± 25 m asl) from July - September 2013.Method of this research is non factorial randomized block design with 7 treatments, that is the typeof AMF spore (big black AMF spores, small black AMF spores, big yellow AMF spores, smallyellow AMF spores, black indigenous of rubber AMF spores, yellow indigenous of rubber AMFspores, spores of Glomus spp.). Parameters observed were addition of plant height, root volume,weight of dry shoot, weight of dry root and total of spores.The result showed that the addition ofsome type AMF significantly influenced total of spores, but for the other parameters influenced notsignificantly.Keywords : arbuscular mychorrizal fungi, rubber

RESPONS PERTUMBUHAN DAN PRODUKSI KEDELAI HASIL SELEKSI TERHADAP PEMBERIAN ASAM ASKORBAT DAN INOKULASI FUNGI MIKORIZA ARBUSKULAR DI TANAH SALIN Muhammad Ardiansyah; Lisa Mawarni; Nini Rahmawati
Jurnal Agroekoteknologi Vol 2, No 3 (2014)
Publisher : Universitas Sumatera Utara

Using of saline land to grow up soybean has constraints such yield decreasing. By using ofsaline tolerant soybean, using ascorbate acid, and inoculation of mychorrizha vesicular arbuscular(MVA) aimed to increasing growth and yield of soybean in saline land.This research was conductedat Kecamatan Percut Sei Tuan Kabupaten Deli Serdang in Februari – Mei 2013, using split split plotdesign with three factors, i.e. variety of saline tolerant soybean (Grobogan no selection andGrobogan F4 selection), giving of ascorbate acid (0 dan 500 ppm) and MVA isolate (MVA type 1,type 2, type 3, type 4 and type 5). Parameter observed were plant height, number of leaves, numberof productive branches, production per plant.The result of the research showed that using of salinetolerant soybean significantly increase all parameters observed. Giving of ascorbate acidsignificantly increase number of productive branches. Inoculation of MVA significantly effect allparameters observed. Interaction between variety of saline tolerant soybean and giving ascorbateacid were not significantly effect all parameters observed. Interaction between variety of salinetolerant soybean and giving of MVA significantly effected number of leaves 5 week after planting(WAP) and production per plant. Interaction between giving of ascorbate acid and MVA were notsignificantly effect all parameters observed. Interaction of three factors were not significantly effectall parameters observed.Keyword : ascorbate acid, michoryza vasicular arbuscular, salinity, soybean

RESPONS PERTUMBUHAN BIBIT KAKAO (Theobroma cacao L.) TERHADAP PEMBERIAN ABU BOILER DAN PUPUK UREA PADA MEDIA PEMBIBITAN Uli Kris Putri Sitorus; Balonggu Siagian; Nini Rahmawati
Jurnal Agroekoteknologi Vol 2, No 3 (2014)
Publisher : Universitas Sumatera Utara

Growing media fertility can be improved or enhanced with inorganic or organic fertilizer, such asboiler ash, which is one type of solid waste by-product of palm oil mills as well as the source ofnitrogen urea fertilizer, is expected to boost growth of cocoa seedling in the nursery. This researchhad been conducted at experimental field of Fakultas Pertanian USU in May 2013 until September2013, using factorial randomized block design with two factor. The first factor was dose of boiler ash(0, 100, 10 g/polybag) and the second factor was dose of urea fertilizer (0, 5, and 10 g/polybag).Parameter observed were plant height, total of leaf area, dry shoot weight and dry root weight.Theresult showed response of boiler ash on cocoa seed significantly increase total of leaf area and dryshoot weight. Urea fertilizer significantly affect dry shoot weight. Interaction of both significantlyaffect dry shoot weight. The best results from interaction boiler ash and urea fertilizer were obtainedin the treatment of boiler ash at 300 g/polybag and urea fertilizer 5 g/polybag.________________________________________________________________________________Keywords: Boiler Ash, Urea Fertilizer, Cocoa Seed

PERAN FUNGI MIKORIZA ARBUSKULA DAN PUPUK ROCK FOSFAT TERHADAP PERTUMBUHAN DAN PRODUKSI KEDELAI (Glycine max (L.) Merrill) Ratih Dewi Rengganis; Yaya Hasanah; Nini Rahmawati
Jurnal Agroekoteknologi Vol 2, No 3 (2014)
Publisher : Universitas Sumatera Utara

The objective of the research was to study to determine the effect of arbuscular mychorrhizal fungi(AMF). This research conducted at society field Setiabudi, Medan Tuntungan, in May-July2013using factorial randomized block design with two factor. The first factor wasaplication of AMF (0,20, 40, g/plant). The second factor was aplication of rock phosphate fertilizer (0, 50, 100, 150kg/ha). Variable observed consistedinfection degree of AMF,shoot dry weight,root dry weight andweight of dry seeds.The result showed that AMFeffect significantlyinfection degree of AMF, shootdry weight, root dry weight. Dose of rock phosphate fertilizer affect significantly,infection degreeof AMF, and weight of dry seeds. There is not significantly interaction between AMF and rockphosphate fertilizer for all variable observed.Based on the research results of the AMF dose(20g/plant) and rock phosphate fertilizer (150 kg/ha) can increase on soybean growth and production.Keywords: arbuscular mychorrhizal fungi,rock phosphate fertilizer, soybean

PENGARUH PEMERAMAN, PENGERINGAN, DAN KEBERADAAN SARCOTESTA TERHADAP PERKECAMBAHAN BENIH PEPAYA (Carica papaya L.) VARIETAS CALLINA Amelia Sebayang; T. Chairun Nissa B; Nini Rahmawati
Jurnal Agroekoteknologi Vol 2, No 3 (2014)
Publisher : Universitas Sumatera Utara

This research aims to obtain the best fruit ripeness, seed drying and the effect of removal ofsarcotesta on germination of papaya seed, variety Callina. This experiment was conducted in theSeed Technology Laboratory, Agriculture Faculty, University of Sumatera Utara during July-September 2013, A factorial randomized block design with 3 factors and 3 replications was used.The factors were fruit ripening (0, 2, 4 days), seed drying (0, 1, 2) days and removal of sarcotesta.Variables observed were germination rate (%/etmal), total germination (%), normal seedlingpercentage (%), seedling fresh weight (g), height of sprout (cm), and peak value of germination(%/day). The results showed that ripening increased rate of germination, total germination, normalseedling percentage, seedling fresh weight and peak value. Interaction between ripening and seeddrying increased height of sprout. The highest germination was obtained for treatments of withoutfruit ripening, without seed drying, and without sarcotesta.Keywords : papaya, ripening, seed drying, sarcotesta.

Dose Response Satu Biotip Eleusine Indica Resisten-Parakuat Terhadap Parakuat, Glifosat, dan Ammonium Glufosinat Titania Ade Yulivi; Edison Purba; Nini Rahmawati
Jurnal Agroekoteknologi Vol 2, No 4 (2014)
Publisher : Universitas Sumatera Utara

Goosegrass (Eleusine indica) is one of weeds that had negative effect which is commonly found incorn field. In the past few years the existence of this weed in the area of BBI Tanjung Selamat hasbeen reported that population was difficult to control with paraquat. This research aims to determinethe dose response of the suspicioned resistant population to paraquat, glyphosate, and ammoniumglufosinate. The levels of paraquat applied were 0, 50, 100, 200, 400, 800, 1600 g a.i. ha-1;glyphosate at 0, 60, 120, 240, 480, 960,1920 g a.i. ha-1 and ammonium glufosinate at 0, 55, 110,220, 440, 880, 1760 g a.i. ha-1. The treatments were arranged in randomised block design (RBD)and each treatment was made in three repetition. The results showed that the paraquat-resistantpopulation from area of BBI still survived as much of 11,67% at the rate of 400 g a.i ha-1.Meanwhile, glyphosate and ammonium glufosinate controlled satisfactorily this population.Keywords: Paraquat, Glyphosate, Ammonium Glufosinate, Eleusine indica, Resistance

Pertumbuhan Kedelai melalui Aplikasi Asam Askorbat dan Inokulasi Fungi Mikoriza Arbuskular pada Lahan Salin dengan Tingkat Salinitas yang Berbeda Romi Martino Sitanggang; Nini Rahmawati; Chairani Hanum
Jurnal Agroekoteknologi Vol 2, No 4 (2014)
Publisher : Universitas Sumatera Utara

Utilization of saline soil for soybean cultivation will decrease soybean production. Micorizainoculation and ascorbate acid treatment on saline soil will give a positive response to the soybeangrowth and production. This research was conducted at experimental field Kecamatan Percut SeiTuan Kabupaten Deli Serdang during Februari – Mei 2013, using split split plot design with threefactors. The main factor was salinity level were electrical conductivity 4-5 mmhos/cm and II:electrical conductivity 6-7 mmhos/cm. The sub plot was giving of ascorbate acid (0 dan 500 ppm)and MVA inoculants (MVA inoculants type 1, type 2, type 3, type 4 and type 5) as sub sub plot.The result of the research showed that single factor micorhizae innoculation or ascorbate acidapplication showed gave a positive response of root infection degree, root dry weight, root volume,shoot dry weight, number of pods per plant contains, the number of empty pods per plant and 100seed weight. Aplication mycorrhizal and ascorbic acid on Saline soils with dhl 4-5 will increasesoybean growth, production, and highest degree of root infection.

Co-Authors Afifudin Dalimunthe Amelia Sebayang ASMARLAILI SAHAR Asmarlaili Sahar Hanafiah Balonggu Siagian Chairani Hanum Chairani Hanum Charloq Dieni Annisa Siregar domas mesiekiel simanjuntak Edison Purba Emmy Harso Kardhinata Fachrina Wibowo Fadli Azhari Harahap Gia Asra Irsa Irsa Jerianta Ginting Jonatan Ginting Lahay, Ratna Rosanty Lisa Lisa Mawarni Mahfriza Fansuri Mahfriza FansuriQ Mariati Mariati Mariti Mariati Mastor Palan Sitorus Meiriani Meiriani Muhammad Ardiansyah Muhammad Indra Iswahyudi Perdana Roy Oksemsa Purba Prihyanti Lasma E. Sinaga Ratih Dewi Rengganis Retno Astari Rian Eko Pradana Riza Syifani Nasution Romi Martino Sitanggang rosita sipayung Rosmayati Rosmayati saut hamonangan pangaribuan T. Chairun Nissa B Tapi Mutia Ariani Lubis Titania Ade Yulivi Toga Simanungkalit Tua Bastari Prima Bangun Uli Kris Putri Sitorus Yaya Hasanah

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