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AGROEKOTEKNOLOGI
ISSN : 23376597     EISSN : -
Jurnal AGROEKOTEKNOLOGI merupakan jurnal ilmiah yang diterbitkan secara online berisikan hasil-hasil penelitian tentang hama dan penyakit tumbuhan, agronomi, pemuliaan tanaman dan ilmu tanah
Articles
584
Articles
Response on Growth of Oil Palm Seedling (Elaeis guineensis Jacq.) by Adding Dolomite, Fertilizer and Sulphate Reduction Bacteria on Acid Sulphate Soils in Green House

Ramadhan, Muhammad ( University of Sumatera Utara ) , Hanafiah, Asmarlaili Sahar ( University of Sumatera Utara ) , Guchi, Hardy ( University of Sumatera Utara )

AGROEKOTEKNOLOGI Vol 6, No 3, Juli (2018)
Publisher : Program studi Agroekoteknologi, Fakultas Pertanian, Universitas Sumatera Utara-Medan

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Abstract

Soil fertility is an important aspect of increasing the growth of oil palm seedling. This research aimed to determine the effect of dolomite, fertilizer and sulphate reduction bacteria (SRB) on the growth of oil palm seedlings. This research was conducted at green house used acid sulphate soils. The research used Randomized Block Design with 3 treatments : Dolomite (without dolomite, dolomite 15,80 tonnes/ha, dolomite 31,60 tonnes/ha), fertilizers (without fertilizer, fertilizer 2,5 grams/seedling, fertilizer 5 grams/seedling) and sulphate reduction bacteria (without SRB and given SRB) with 3 replications. The results showed that the application of dolomite (15,8 and 31,6 tonnes/ha) increased soil pH (4.90 and 4.78) statistically significant. Application of sulphate reduction bacteria increased soil pH (4,59) statistically significant. Application of fertilizers (2,5 and 5 grams/seedling) increased the plant height (40,19 and 44,59 cm) and stem diameter (25,33 and 26,90 mm) statistically significant. Application of dolomite and sulphate reduction bacteria inoculum could increase the plant height and stem diameter of oil palm seedlings more than control. The application of dolomite, fertilizers and also sulphate reduction bacteria inoculum could increase the plant height and stem diameter of oil palm seedlings more than control. The best treatment was dolomite 31,60 tonnes/ha, fertilizer 5 grams/seedling and sulphate reduction bacteria inoculum. Application of dolomite could be replaced with sulphate reduction bacteria inoculum. Keywords :   Acid Sulphate Soil, Dolomite, Fertilizer, Soil Fertility, Sulphate Reduction Bacteria

Some Changes in Chemical Properties Land and Growth of Corn (Zea mays L.) Giving Due Waste Cigarette Paper Factory and Chicken Manure On Ultisol Soil

Abdillah, Albi ( University of Sumatra Utara ) , Lubis, Kemala Sari ( University of Sumatra Utara ) , Mukhlis, Mukhlis ( University of Sumatra Utara )

AGROEKOTEKNOLOGI Vol 6, No 3, Juli (2018)
Publisher : Program studi Agroekoteknologi, Fakultas Pertanian, Universitas Sumatera Utara-Medan

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Abstract

The solid waste of the factory of wrapper cigarette is generated very much by the factory of wrapper cigarette PT.Pusaka Prima Mandiri. This waste contains calcium carbonate + 70,81% and can increase acidity of Ultisol. The research was to conduct study the utilization of solid waste of the factory of wrapper cigarette and chicken manure to repair soil acidity and nutrient content of Ultisol. Screen house research has been conducted to examine the effect of solid waste of the factory of wrapper cigarette and chicken manure in overcoming acidity and soil nutrient enhancement Ultisol. This research was conducted by randomized block design two (2) factors. The first factor is solid waste of the factory of wrapper cigarette consists of  five (5) doses and the second factor is chicken manure consisting of three (3) doses with three (3) replications. Analysis of soil was conducted at the Laboratory of Oil Palm Research Centerand Soil Chemistry Laboratory ofFaculty of Agriculture, University of North Sumatra. Parameters observed include soil pH, Al(exch), P-available, plant height and dry weight of crown and root maize. The results showed that the solid waste ofthe factory of wrapper cigarette can decrease acidity of Ultisol and increase increase the plant height and dry weight of the crown. Chicken manure can decrease acidity of Ultisol. The solid waste of the factory of wrapper cigarette has the potential to decrease Al(exch) and meet the availability of P in the soil.

Application of Liquid Organic Fertilizer Human Urine Fermentation to Increase Growth of Corn Plants in Inceptisols Kwala Bekala

Putra, Sefriansyah ( University of Sumatera Utara ) , Mukhlis, Mukhlis ( University of Sumatera Utara ) , Damanik, Mohd. Madjid ( University of Sumatera Utara )

AGROEKOTEKNOLOGI Vol 6, No 3, Juli (2018)
Publisher : Program studi Agroekoteknologi, Fakultas Pertanian, Universitas Sumatera Utara-Medan

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Abstract

Green house study to increase growth of corn plants with application human urine fermentation as liquid organic fertilizer in Inceptisols Kwala Bekala. Research using randomized block non factorial design with 5 levels of dosage treatmenthuman urine fermentation that is:  0 mL/pot (P0), 25 mL/pot (P1), 50 mL/pot (P2), 75 mL/pot (P3) and100 mL/pot (P4) with 5 replications. Parameter that measured are soil pH, organic C, N-total,       P-available, K-exchangeable, plant height, root dry weight, shoot dry weight, N, P and K uptake in Laboratory. Result of this research showed that application human urine fermentation can improve soil pH, organic C, N-total, P-available, K-exchangaeble, plant Height, root and shoot dry weight, and uptake N, P, K  growth of corn plants. Best human urine fermentation dose on this research is 75 mL/pot (P3). Keywords: Human urine fermentation, Inceptisols Kwala Bekala, Nutrient, Organic fertilizer.

Evaluation The Characteristics Of Soil Chemical Properties Of Oil Palm In The Adolina Plantantion Ptpn Iv Serdang Bedagai On Several Generation Of Planting

Nuraini, Nuraini ( University of Sumatera Utara ) , Rauf, Abdul ( University of Sumatera Utara ) , Jamilah, Jamilah ( University of Sumatera Utara )

AGROEKOTEKNOLOGI Vol 6, No 3, Juli (2018)
Publisher : Program studi Agroekoteknologi, Fakultas Pertanian, Universitas Sumatera Utara-Medan

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Abstract

ABSTRACT The reseach aimed to determine changes in the characteristics of some soil chemical properties planted with oil palm in several generations of planting. This research was conducted in July 2016 until January 2017, using survey method with descriptive analysis. Soil samples were taken in 3 generations of planting, G0 (land never planted with oil palm), G1 (land cultivated by oil palms for 11 years), G3 (land cultivated by oil palms for 58 years) and G4 (land Which has been cultivated for oil palm plantations for 72 years). That Generation II land is still projected at the time of this research. In each generation three soil profiles are made, then tested by t Test. The results showed that the increase of planting generation to change the soil characteristics of soil chemistry is very apparent in the decreasing soil pH which is more acid, while the C-Organic, total of N, total of P, total of K and soil carbon stocks different is not real meaning that the generation of planting in oil palm plants does not affect the soil chemical properties in the Adolina plantation. But increasing the value of CEC land the longer the generation of planting.   Keywords: generation of planting, oil palm, soil chemical properties

Influence of Rainfall and Rainy day On Oil Palm Production 8, 16, and 19 years Old in Sei Dadap PT. Perkebunan Nusantara III Persero

Zailani, Abdurrahman ( University Of Sumatera Utara ) , Irsal, Irsal ( University of Sumatera Utara ) , Mariati, Mariati ( University of Sumatera Utara )

AGROEKOTEKNOLOGI Vol 6, No 3, Juli (2018)
Publisher : Program studi Agroekoteknologi, Fakultas Pertanian, Universitas Sumatera Utara-Medan

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Abstract

The Influence of rainfall and rainy day on oil palm production 8, 16, and 19 Years Old in Sei Dadap  PTPN III Persero supervised byIrsaland Mariati.The climate like rainfall and rainy day is very influential to the growth and productivity of oil palm. The oil palm is a plant that requires large amounts of water than other crops. This research was to determine the effect of rainfall and rainy day as well as the correlation of both on oil palm production in plants aged 8, 16 and 19 years old. The research was conducted at PTPN III Sei Dadap Sub-district Sei Dadap District Asahan Province of North Sumatera from April up to June 2016. This research used primary data available in company administration. Primary data for the purposes of data analysis includes the production of fresh fruit bunches (FFB); component production data as total bunches, average bunches weight, and total of productive trees; rainfall data and rainy day monthly in 2011, 2012, and 2013. The analysis method used are double linier regression and correlation analysis. Model tested by classic asumption consists of normality test, heteroskedasticity test, multicollinearity, and autocorelations test by using statistic software SPSS.v.22 for windows. The regression analysis shows that rain fall and rainy day variables significant with alpha 5% (Sig < α 0.05) to increase the production of FFB at the age of 16 and 19 years and unsignificanted to increase the production of FFB at the age 8  years. This is because the rainfall is not evenly distributed throughout the year and less than optimal for the growth and production of FFB. From the results of the classical assumption test conducted to determine whether the multiple regression equation feasible or not to use the regression equation to conclude that the oil palms aged 8, 16, and 19 years are qualified. Correlation results in plants was 8, 16, and 19 years with two-way analysis test at 1% level showed variable rainfall and rainy days have a strong relation, and the real (positive) direction. The correlation values of rainfall and rainy days are 0.838 with significant level < α 0,01

Differences In Growth of Two Varieties of Oil Palm(Elaeis guineensis Jacq.) to The Composition of Planting Mediain Prenursery

susanto, eddy ( University of Sumatera Utara ) , mawarni, lisa ( university sumatera utara ) , barus, asil ( university sumatera utara )

AGROEKOTEKNOLOGI Vol 6, No 3, Juli (2018)
Publisher : Program studi Agroekoteknologi, Fakultas Pertanian, Universitas Sumatera Utara-Medan

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Abstract

The purpose of this research is to know the difference growth of two varieties of palm oil         (Elaeis guineensis Jacq.) on composition media pretax cropping in a nursery. This research have held in the faculty of agriculture land of usu in december 2016 to march 2017 using random design group  with two factors .The first factor varieties with two kinds of varieties namely Yangambi and PPKS540 .The second factor media cropping with three types of media cropping namely subsoil, empty fruit bunch, and fibers palm oil. Parameters that observed is high in plant, diameter of the stem, total broad leaves, fresh editorial weights, weights fresh roots, dry weight editorial and weights dried root. The result show that treatment cropping influential media real against tall plant, diameter of the stem, wet editorial weights and weights dry editorial. Where treatment influential real varieties on the parameter weights dried root. And variety of Yangambi (V1).While media cropping best is media cropping subsoil or control ( M0 ).

Mapping Of Soil Infiltration In Publik Green Open Space In Medan City

Siddiq, Muhammad Arief ( University Of Sumatera Utara ) , Guchi, Hardy ( University Of Sumatera Utara ) , Sarifuddin, Sarifuddin ( University Of Sumatera Utara )

AGROEKOTEKNOLOGI Vol 6, No 3, Juli (2018)
Publisher : Program studi Agroekoteknologi, Fakultas Pertanian, Universitas Sumatera Utara-Medan

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Abstract

This study aims to identify and map soil infiltration in public green open space in Medan city.The research was conducted in Public Open Space of Medan City. Soil sampling and measurement of innfiltration was done by using purposive sampling method based on overlapping map of green open space type and soil type map, and got 22 sample points for analysis.The result shows that the ability of soil infiltration in public Open Space in Medan City is classified as slow, slow and moderate criterion. The highest soil infiltration is found at Al Abraar Mosque grave (SPL 20) with infiltration value 30.122 mm / h in medium criteria. The lowest soil infiltration is found in Forest of Taman Beringin City (SPL 10) with infiltration value 1,111 mm / h in medium criterion. Infiltration in the citys open public green space, influenced by the type of soil and vegetation above it.   Keywords: green open space, infiltration, mapping

The Influence of Water Temperature and Soaking Duration at Two Levels of Fruit Maturity for Soursop (Annona muricata Linn) Seed Germination

Gea, Dea Triaspita ( University of Sumatera Utara ) , Haryati, Haryati ( University of Sumatera Utara ) , Ginting, Jonatan ( University of Sumatera Utara )

AGROEKOTEKNOLOGI Vol 6, No 3, Juli (2018)
Publisher : Program studi Agroekoteknologi, Fakultas Pertanian, Universitas Sumatera Utara-Medan

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Abstract

Seed maturity is the one of important factors in germination process. Physiologically immature seeds generally do not have sufficient food reserves and seed structure are not fully formed, which may inhibit germination processes. One effort that can be done to accelerate the process of seed germination to soaking seeds in the water. This research was conducted at the Laboratory of Seed Technology, Agriculture Faculty, North Sumatera University, Medan, from December 2016 to  February 2017, using a randomized block design with 3 factors. The first factor is fruit  maturity with 3 levels: immature; mature, the second factor is water temperature with 2 levels: 28⁰ C; 9⁰ C and the third factor is the length of soaking with 3 levels: 12 hours; 24 hours; 36 hours. The results interaction treatments fruit mature, water temperature 9⁰ C and soaking duration 36 hour significantly accelerate the germination rate to 20,45 days, increasing vigor index to 1,57 seed/days, increasing percentage normal seedling to 100,00% decreasing percentage abnormal seedling and seed dies to 0,00%.

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.)

Sitanggang, Eliasyb Parhorasan ( University of Sumatera Utara ) , Harahap, Erwin Masrul ( University of Sumatera Utara ) , Guchi, Hardy ( University of Sumatera Utara )

AGROEKOTEKNOLOGI Vol 6, No 3, Juli (2018)
Publisher : Program studi Agroekoteknologi, Fakultas Pertanian, Universitas Sumatera Utara-Medan

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Abstract

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

sihombing, yudi sudarno ( University of Sumatrera Utara ) , Hanafiah, Asmarlaili Sahar ( University of Sumatera Utara ) , Sembiring, Mariani ( University of Sumatera Utara )

AGROEKOTEKNOLOGI Vol 6, No 3, Juli (2018)
Publisher : Program studi Agroekoteknologi, Fakultas Pertanian, Universitas Sumatera Utara-Medan

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Abstract

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.