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AGROEKOTEKNOLOGI

agroekoteknologi
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Published by Universitas Sumatera Utara

ISSN : 23376597 EISSN : - DOI : -

Core Subject : Agriculture,

Agriculture, Biological Sciences & Forestry

Jurnal AGROEKOTEKNOLOGI merupakan jurnal ilmiah yang diterbitkan secara online berisikan hasil-hasil penelitian tentang hama dan penyakit tumbuhan, agronomi, pemuliaan tanaman dan ilmu tanah

Arjuna Subject : -

Articles 943 Documents

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The Influence of Applying Fertilizer Dose Complete N, P, K, and Mg and Soil Nutrient Indexes Against the Growth of Vegetative Rice Plant (Oryza Sativa L.) Eliasyb Parhorasan Sitanggang; Erwin Masrul Harahap; Hardy Guchi
Jurnal Agroekoteknologi Vol 6, No 3, Juli (2018)
Publisher : Universitas Sumatera Utara

Rice is the main food needs for the community in Indonesian. Fertilization is one of the activities is very important in increasing the production of rice plant. This research aims to study the influence of granting demand fertilizer plant and soil nutrient indexes against the growth of vegetative rice plant. This research was carried out in lawland district Medan Baru at the points of coordinates 3.331810 LU and 98.385300 BT from August until December 2016. The experimental design used completely randomized design with two factor. The first factor was the provision of Urea, SP36, KCL, and Dolomit. P1= 121,36 gram/plot, P2= 161,82 gram/plot, P3=202,27 gram/plot, P4= 242,73 gram/plot and the second factor was based on soil nutrient index B1= 0,8 (dose less 20), B2= 0,9 (dose less 10%) B3= 1 (100% standart nutrient index), B4= 1,1 (dose plus 10%), B5= 1,2 (dose plus 20) were repeat twice.The result of experiment showed that P2B1 =129,45 gram/plot the best combination of the application of fertilizers and soil nutrient index P4= 242, 72 gram/plot was the best fertilizer dose treatment B2=0,9 (dose less 10%) was treatment of soil nutrient index. Keywords : fertilizers, nutrient indexes, paddy

Potential Test of Sulphate Reducing Bacteria (SRB) To Changes the Acidity of Sulphate Acid Soil and Corn Growth with Different Water Content in Green House yudi sudarno sihombing; Asmarlaili Sahar Hanafiah; Mariani Sembiring
Jurnal Agroekoteknologi Vol 6, No 3, Juli (2018)
Publisher : Universitas Sumatera Utara

This study aimed to determine the potential for a superior sulphate reducing bacteria (SRB) from tested on acid sulfate soil with different water content. The research activities carried out in the Laboratory of Soil Biology and Green House of Faculty Agriculture, University of North Sumatra. The research used Randomized Block Design with 2 treatments : SRB isolate (control, LK4, LK6, TSM4, TSM 3, AP4, AP3, LK4+TSM3, LK4+AP4, LK4+AP3, LK6+TSM3, LK6+AP4, LK6+AP3, TSM4+TSM3, TSM4+AP4, TSM4+AP3) and water condition (100% field capacity and 110% field capacity). The results shown application of isolate LK4+AP4 with water condition 110% field capacity decreased the soil sulphate content (27,38 ppm) significantly after week 6. Application of isolate LK4+AP3 with water condition 110% field capacity increase soil pH (5,58) significantly after week 6. Application of isolate LK4 with water condition 110% field capacity increase the plant growth (140 cm; 25,74 g) significantly after week 6. The best treatment was application isolate LK4 with water condition 110% field capacity (RBS population 2,5x108; soil sulphate content 29,10ppm; soil acidity 4,78; plant height 140cm; plant weight 25,74gr). Keywords : pH, Soil Sulphate Content, Sulphate Reducing Bacteria, Water Condittion.

The Effect of Rock Phosphate Fertilizer application Urea, MOP, and Dolomite on leaf Phosphorus Content of Produce Palm Oil in Ultisol Tomy Fadillah; Hamidah Hanum; Madjid Damanik
Jurnal Agroekoteknologi Vol 6, No 3, Juli (2018)
Publisher : Universitas Sumatera Utara

The aim of the research wasto examine the effect of application rock phosphate, urea, MOP, and dolomite on leaf P content of produce palm oil and see the dynamics of leaf P content of produce palm oil after 6 months of fertilizer application in Ultisol. The research was implemented inPPKS Kebun Aek Pancur Tanjung Morawa using non factorial randomized block design with treatment T0 (without fertilizer), T1 (rock phosphate), T2 (rock phosphate and urea), T3 (rock phosphate and MOP), T4 (rock phosphate and Dolphite), T5 (rock phosphate, urea, and MOP), T6 (rock phosphate, urea, and dolomite), T7 (rock phosphate, MOP, and dolomite), T8 (rock phosphate, urea, MOP, and dolomite), with 3 replications. Parameters measured are P leaf. Result of this research showed that application of rock phosphate, urea, MOP, and dolomite did not affect leaf P content for 6 months after application. Keywords :palm oil,P leaf,rock phosphate, Ultisol

Mapping of Soil Phospor and Potassium on Paddy Land with 200 Cropping Intensity System in Tanjung Rejo Village Percut Sei Tuan Sub District of Deli Serdang District Ade Ine Imansari; Razali Razali; Mariani Sembiring
Jurnal Agroekoteknologi Vol 6, No 3, Juli (2018)
Publisher : Universitas Sumatera Utara

This research is aimed to describe soil phosphorus and pottasium spread in 200 Cropping Intensity paddy field. Location in Tanjung Rejo village Percut Sei Tuan sub district Deli Serdang district, Laboratory of Geographic Information System Agriculture Department of Universitas Sumatera Utara, Laboratory of Soil Chemical and Indonesian Oil Palm Research Institute Laboratory. Soil sampling was done with free grid of storey level semi detail method. Parameters were soil phosphate (HCl 25%) and Soil Pottasium (HCl 25%) and questioner of paddy field. The data was analyzed with interpolation method. The result showed that soil phosphorus spread divided into two criteria’s, respectively medium and high. In the medium criteria was 0,7% of total area and for high criteria was 99,3% of total area with phosphate fertilizer recommendation is SP-36 75 kg / ha / season for medium P2O5 nutrient status and SP-36 50 kg / ha / season for high P2O5 nutrient status. While in soil pottasium spread divided into three criteria’s, the low criteria was 0,4% of total area, for medium criteria 23,7% of total area and for high criteria was 75,9% of total area. with pottasium fertilizer recommendation is KCl 50 kg / ha / season for low K2O nutrient status and no need to fertilized for medium and high K2O nutrient status. Keywords: cropping intensity, fertilization, interpolation, soil phosphorus, soil pottasium.

The Influence Of Organic Matter Of Kirinyuh (Eupathorium Odoratum) and That Of Organic Matter Of Titonia (Tithonia Diversifolia) On Some Soil Chemical Properties and Maize Yield On Ultisols andreas napitupulu; Posma Marbun; Supriadi Supriadi
Jurnal Agroekoteknologi Vol 6, No 3, Juli (2018)
Publisher : Universitas Sumatera Utara

The study was performed in order to investigate the influence of organic matter of kirinyuh (Eupathorium odoratum) and that of organic matter of titonia (Tithonia diversifolia) on some soil chemical properties and maize yield on Ultisols of Village Huta Ginjang. The experiment was in a non-factorial randomized complete block design. The treatments included control, inorganic NPK 100 %, fresh bitter bush 10 t/ha, fresh wild sunflower 10 t/ha, decayed bitter bush 10 ton/ha, decayed wild sunflower 10 ton/ha, fresh bitter bush 10 ton/ha + 50 % NPK, fresh wild sunflower 10 ton/ha + 50 % NPK, decayed bitter bush 10 ton/ha + 50 % NPK, and decayed wild sunflower 10 ton/ha + 50 % NPK. The treatments was replicated three times. The results showed that the applications of fresh bitter bush (Euphatorium odoratum), decayed bitter bush, fresh bitter bush + 50 % NPK and fresh wild sunflower (Tithonia diversifolia), decayed wild sunflower, fresh wild sunflower + 50 % NPK significantly increased soil pH, N-total of soil, exchangeable K of soil, fresh fruit weight, and the 1,000 maize seed weight. However, the application of decayed wild sunflower combined with NPK was the most appropriate one since it generated the extraordinary value on parameters: soil pH, exchangeable K, fresh fruit weight and the 1,000 maize seed weight with their values in turn: 5,41; 2,53 me/100g; 357,33 g/plot dan 303,33 g/plot. Keywords : kirinyuh, maize production,organic matter, tithonia,ultisol

Mapping Of Soil Nutrient Status Rice Field IP-200 and IP-300 in Desa Baru Kecamatan Batang Kuis Kabupaten Deli Serdang Fitra Rizki Aghita Purba; Razali Razali; Benny Hidayat
Jurnal Agroekoteknologi Vol 6, No 3, Juli (2018)
Publisher : Universitas Sumatera Utara

ABSTRACT The purpose of this research to mapping and compare Soil nutrient status cause by increased Rice Field Cultivation Index in Desa Baru Kecamatan Batang Kuis Kabupaten Deli Serdang. The research was conducted in Desa Baru Kecamatan Batang Kuis Kabupaten Deli Serdang, Research and Technology of Laboratory Agriculture Faculty USU and Research Laboratory PT. Socfindo is done from October 2016 to March 2017, using the Free Survey Grid method with level of a scale is 1: 10,000 (1 sample representing 1 ha of paddy field). Parameters observed included C-Organic Soil (Walkley and Black), N-Total Soil (Kjedahl Method), P2O5 (25% HCl Extract), K2O ( 25% HCl Extract). The results from Laboratory analysis were grouped using the Land Research Center's criteria in 1983. Mapping and comparing the soil nutrient status (C-organik, N, P2O5, K2O) were done using Geographic Information System (GIS) with Interpolation technique. The result showed there was decreased of C-Organic soil, Nitrogen and K2O due to by the increased of Rice Field (IP), no decrease of nutrient status P2O5 due to by the increase of Rice Field Cultivation. Keywords: Crop Index (IP), Rice Field, Geographic Information System (GIS).

Infiltration Capacity in 4 Land Use Types in the Sei Silau Barat village, Setia Janji sub-district, district of Asahan Siti Maqdisa; jamilah Jamilah; purba marpaung
Jurnal Agroekoteknologi Vol 6, No 3, Juli (2018)
Publisher : Universitas Sumatera Utara

ABSTRACT The objective of this research was to know the infiltration capacity in 4 land use types in the Sei Silau Barat village, Setia Janji sub-district, district of Asahan. Coordinate on settlement area of 99o29’40” N 2o56’24” E and 99o29’50” N dan 2o56’18” E, on corps of palawija at coordinate of 99o31’10” N 2o56’56” E and 99o30’50” N 2o56’38” E, at oil palm estate at coordinate of 99o30’30” N 2o57’16” E and 99o30’20” N 2o56’52” E, and at rubber estate at coordinate of 99o30’20” N 2o56’52” E and 99o30’10” N 2o55’58” E. Soil analysis results at settlement area its texture was sandy clay, organic matter content was 0,54%, rate of water was 30,61%, bulk density was 1,05 g/cm3, particle density was 2,19 g/cm3, and porosity was 51,81% with infiltration capacity was 7,8 x 10-6 m/s (medium). At corps of palawija, its texture was sandy clay loam, organic matter content was 1,68%, rate of water was 50,52%, bulk density was 1,01 g/cm3, particle density was 2,04 g/cm3, and porosity was 50% with infiltration capacity was 37 x 10-6 m/s (quickly). At palm oil estate, its texture was sandy clay loam, organic matter content was 0,84%, rate of water was 27,69%, bulk density was 1,14 g/cm3, particle density was 2,28 g/cm3, and porosity was 49,09% with infiltration capacity was 8,4 x 10-6 m/s (medium). And at rubber estate, its texture was sandy clay loam, organic matter content was 1,14%, rate of water was 38,71%, bulk density was 1,1 g/cm3, particle density was 2,24 g/cm3, and porosity was 50,91% with infiltration capacity was 0,6 x 10-6 m/s (very slow). Keywords: Infiltration capacity, land use types, Sei Silau Barat Village

The Effect of Seeds Number and Modified Jajar Legowo Planting System to The Growth and Yield for Rice (Oryza sativa L.) in Medan Tuntungan Stephanie Claudia Chrisdyana Tambunan; Posma Marbun; Erwin Masrul Harahap
Jurnal Agroekoteknologi Vol 6, No 3, Juli (2018)
Publisher : Universitas Sumatera Utara

The research was conducted at rice field in Medan Tuntungan which about ± 25 metres above sea level, begun from March until June 2017 using completly randomized design with two factors, i.e: the number of seeds (1,2,3) and plant population based on modified jajar legowo planting system (conventional planting system with population of 48 clumps per plot, jajar legowo planting system with population of 60 clumps per plot, jajar legowo planting system with population of 114 clumps per plot, jajar legowo planting system with population of 154 clumps per plot, jajar legowo planting system with population of 190 clumps per plot). The results showed that 1 seed of clumps with conventional planting system with population of 48 clumps per plot significantly influence the increase of rice production (Oryza sativa L.). The interaction between number of seeds dan plant population significantly increased growth but did not significantly increase rice production (Oryza sativa L.). Keywords : jajar legowo, number of seeds, rice

The Addition of Coconut Coir on Planting Medium and Watering Frequency Against The Growth of Oil Palm Sprouts (Elaeis quineensis Jacq.) in Pre Nursery FINE FATE SIAHAAN; CHARLOQ CHARLOQ; FERRY EZRA T SITEPU
Jurnal Agroekoteknologi Vol 6, No 3, Juli (2018)
Publisher : Universitas Sumatera Utara

Pre nursery of oil palm requires adequate water availability on the media used so that with the addition of coconut coir helps keep soil moisture. The aims of the research is to know the addition of coconut coir on planting medium and watering frequency against the growth of oil palm sprouts in pre nursery. Research conducted in October through December 2016 in Pusat Penelitian Kelapa Sawit Sei-Aek Pancur, Tanjung Morawa, Deli Serdang. Research design used was Randomized Complete Design Factorial with two factors. The first factor is the addition consists of 1/5 coconut coir and 1/10 coconut coir, the second factor is the frequency of watering treatment consists of once and twice watering. The observation parameters is the plant height, number of leaves and stem diameter. The results showed that treatment of the addition of the coconut coir and the frequency of watering effect is not significant in the oil palm seedling growth. Keywords: Coconut coir, growth of oil palm sprout, watering frequency.

The Effect of Jajar Legowo Planting System on Growth and Production of Some Varieties Paddy (Oryza sativa L.) LORENTA REBEKKA SIMAREMARE; JONATAN GINTING; HARYATI HARYATI
Jurnal Agroekoteknologi Vol 6, No 3, Juli (2018)
Publisher : Universitas Sumatera Utara

This study aims to determine the effect of legowo row planting system on the growth and production of several varieties of rice fields (Oryza sativa L.). This research was conducted in paddy field of Balai Benih Induk Padi Murni Tanjung Morawa Agriculture Agency of North Sumatra Province from November 2016 until March 2017. This research used Factorial Random Block Design with 2 Factors of Treatment. The first factor is the jajar legowo planting system consisting of 3 levels L0 = Control (10 x 25 cm), L1 = 2: 1 (10 x 25 cm), L2 = 4: 1 (10 x 25 cm) and the second factor is varieties with 4 levels V1 (Mekongga), V2 (Situ bagendit), V3 (Inpari 32), V4 (Inpari 30). The results showed that planting system of legowo 4 :1 had an effect on increasing productivity of paddy rice (Oryza sativa L.). Keywords : jajar legowo planting system, rice, varieties.

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