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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

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Articles 943 Documents

87 88 89 90 91

Influence of Rainfall and Rainy day On Rubber Production 13, 16, and 19 years Old in Lima Puluh PT.Socfin Indonesia Rangga Amris Harun; irsal Irsal; Jonis Ginting
Jurnal Agroekoteknologi Vol 7, No 1,Jan (2019)
Publisher : Universitas Sumatera Utara

One of determining factors of water supply for rubber plants are rain fall and rain day. Water supply for rubber in field is obtained from rainfall. The amount of water that doesn’t consistent give negative impact to the productivity of rubber. This research was to determine the effect of rainfall and rain day as well as the correlation of both on rubber production in plants aged 13, 16, 19 years. This research is done in Sei Baleh Estate PT. Socfin Indonesia Kebun Lima Puluh District Batubara Province of Sumatera Utara from October to Desember 2016. This reasearch used primary data available in company administration. Primary data for the purposes of data analysis includes latex production in 2010, 2011, and 2012; rainfall data and rain day monthly in 2009, 2010, and 2011. Analysis method used are double linier regression and correlation analysis. Model tested by classic asumption consists of normality test, heteroskedasticity test, multicollinearity, and autocorellations test by using statistic software SPSS.v.17 for windows. The regression analysis shows that rainfall and rain day variables don’t have significant influence to increased latex production of rubber plants aged 13 years and have significant influence to increased latex production of rubber plants aged 16 and 19 years . Rainfall and rain day affect latex production 14,2%; 99,8%; dan 99,9% of rubber plants aged 13, 16, 19 years. The correlation result in plants aged 13, 16, 19 years showed variable rainfall and rain day have a strong relationship (0,926) against the latex production. Keywords: lateks production, rainfall, rainy day.

Influence of rainfall and rainy day on oil palm productivity 7, 15, and 19 years aged in Aek Loba PT. Socfin Indonesia andilaw rico doani sipahutar; - irsal; lisa mawarni
Jurnal Agroekoteknologi Vol 7, No 1,Jan (2019)
Publisher : Universitas Sumatera Utara

Rain is the main source of water in oil palm plantations and a factor that greatly affects the growth and production of crops. This research was to evaluate the effect of rainfall and rain day on the productivity of oil palm aged 7, 15 and 19 years.This research is done in Aek Loba Plantation PT.Socfin Indonesia. District Asahan Province of North Sumatera from July until october. This reasearch used primary data available in company administration. Primary data for the purposes of data analysis includes fresh fruit bunches (FFB) production in 2014, 2015, and 2016, rainfall data and rain day data monthly in 2013, 2014, and 2015. Analysis method used are double linier regression and correlation analysis. The model tested its feasibility with classical assumption test including normality test, heteroscedasticity test, multicolinearity test, and autocorrelation test using SPSS.v.22 for windows. From the classical assumption test conducted, it is concluded that the regression equation in oil palm plant age 7, 15, and 19 years has been qualified to be followed by multiple linear regression analysis and correlation analysis. The result of regression analysis shows that rainfall and rainy day variables have no significant effect on increasing the productivity of FFB in oil palm crop at age 7, 15 and 19 years at α 5 % (sig < α 0,05). The results of the analysis on plants aged 7, 15, and 19 years with two-way analysis showed significantly rainfall and rainfall variables on FFB productivity. In 7 years old oil palm trees showed enough correlation with value of 0.602 and 0.606. In 15 years old oil palm trees showed a rather week correlation of 0.544; 0.477. In 19 years old oil palm trees showed a rather week and week correlation of 0.494; 0.372.

Effect of Ultraviolet Irradiation on the Pathogenicity of Fusarium moniliforme Pokkahboeng Disease on Sugar Cane Fahmy Fadly; Lahmuddin Lubis; Lisnawita Lisnawita
Jurnal Agroekoteknologi Vol 7, No 1,Jan (2019)
Publisher : Universitas Sumatera Utara

Effect of Ultraviolet Irradiation on the Pathogenicity of Fusarium moniliforme Pokkahboeng Disease on Sugar Cane. 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 has conducted at green house of Faculty of Agriculture Universitas Sumatera Utara from July-October 2016 using completely randomized design (CRD) nonfactorial and five treatments: M0, M1, M2, M3, M4 (without UV exposure, UV exposure for 15, 30, 45, and 60 minutes) with four replications. The results showed that pathogenicity of F. moniliforme was declined after UV radiation and UV irradiation for 45 minutes was the most efficient time to suppress the pathogenicity of F.moniliforme. Key words : Fusarium moniliforme, sugarcane, ultraviolet

Inventory and identification of species taro’s from genus Colocasia and Xanthosoma in Deli Serdang and Serdang Bedagai regency etna adriana silaban; Emmy Harso Kardhinata; Diana Sofia Hanafiah
Jurnal Agroekoteknologi Vol 7, No 1,Jan (2019)
Publisher : Universitas Sumatera Utara

Inventory and identification of species taro’s from genus Colocasia and Xanthosoma in Deli Serdang and Serdang Bedagai regency. Supervised by Ir. Emmy Harso Kardhinata M.Sc., and Dr. Diana Sofia Hanafiah SP, MP., The purpose of the research is to inventory and identify of species taro’s from genus Colocasia and Xanthosoma in Deli Serdang and Serdang Bedagai regency. The research was conducted in Deli Serdang and Serdang Bedagai regency from May 2017 to August 2017. The research was dessigned by descriptive methode and the samples were collected based on accidental sampling technique. Morfological characteristic of taro were based on UPOV (International Union For The Protection Of New Varieties of Plant). The result showed that there were 11 genotip of taro. In the district Biru-biru, STM Hilir, and Dolok Masihul that included the highlands there were 5 genotip of taro are genotip 3, genotip 4, genotip 5, genotip 6, and genotip 7. In the district Patumbak that included the lowland there were 2 genotip of taro are genotip 1 and genotip 2. In the district Pantai Cermin and Perbaungan that included the beach there were 4 genotip of taro are genotip 8, genotip 9, genotip 10 and genotip 11. Some species of taro grow wild and have not been cultivated by peoples.

The evaluation of land suitability toUpland rice (Oryza sativaL.)and Onion (Allium ascalonicum L.) in Kualuh Hulu SubdistrictOfNorth Labuhanbatu District Khairi Rizki Siregar; zulkifli Nasution; Bintang Sitorus
Jurnal Agroekoteknologi Vol 7, No 1,Jan (2019)
Publisher : Universitas Sumatera Utara

The objective of this researchis to evaluate the land suitability Upland rice (Oryza sativa L.)and Onion (Allium ascalonicumL.) in Kualuh Hulu Subdistrict of North Labuhanbatu District. The methode of this research is the survay method. From the results of the overlay from the map of soil types, map of topography, and map of height place, retrieved 9 units of land use map. SPL 1 has a land area of22.273,98 hectares, SPL 2 has a land area of 12.248 hectares, SPL 3 has a land area of 8.571,24 hectares, SPL 4 has a land area of 8.015,46hectares, SPL 5 has a land area of 4.736,61 hectares, SPL 6 has a land area of 3.154,86 hectares, SPL 7 has a land area of 2.044,73 hectares, SPL 8 has a land area of 1.445,39 hectares and SPL 9 has a land area of 946,28hectare. The conclusionof this research showed the highest potential of land suitability classes in set of land 1 is upland rice ( S3 rc ) and onion ( S3 wa, rc ),in set of land 2 is upland rice (N rc) and onion( N rc ), in set of land 3 is upland rice ( S1 ) and onion ( S3wa ), in set of land4 is upland rice( N rc ) andonion ( N rc ), in set of land 5 is upland rice (S3 rc ) and onion ( S3 wa rc ), in set of land 6 is upland rice (S1) and onion (S3 wa ), in set of land 7 isupland rice(S3 rc ) and onio (S3 wa rc), in set of land 8 is upland rice (S3 rc ) and onion ( S3 wa rc ) and in set of land 9 is upland rice ( S3 rc ) and onion (S3 wa rc). Keywords : Land suitability, Onion, Upland rice

Response and Heritability of Oil Palm Type of Seedling K++ and K— to KCl Fertilizer Application in Pre Nursery irvan maulana amry; Lollie Agustina P. Putri; Diana Sofia Hanafiah
Jurnal Agroekoteknologi Vol 7, No 1,Jan (2019)
Publisher : Universitas Sumatera Utara

The aims of research was to study the response and heritability of oil palm type of seedling K++ and K-- to KCl fertilizer application in pre nursery. This research was conducted at PT. Socfindo Bangun Bandar, Martebing Village, Dolok Masihul District, Serdang Bedagai Regency, Province of North Sumatera, with an altitude of ±60 meters above sea level, starting from February 2017 until May 2017 using Randomized Block Design with 2 factors of treatment: seed type (K++ and K--) and aplication of KCl fertilizer (0 g, 0.15 g and 0.30 g)/seedlings. The data obtained were analyzed using a verbal examination and continued by Duncan's multiple-range test. The parameters observed were plant height, stem diameter, number of leaves, the element of potassium nutrients on the soil and the element of potassium nutrient in the leaves. The results showed that the seed type treatment was significantly different from the plant height, leaf number, and stem diameter. The treatment of KCl fertilizer dose did not significantly affect all parameters. The interaction between the two treatments did not significantly affect all parameters. Parameter of plant height, leaf number and stem diameter showed high heritability value.

Performance of Banana Cultivar (Musa acuminata L. and Musa balbisiana L.) Through In Vitro Propagation Gurning, Winda Sari Melati; Setiado, Hot; Damanik, Revandy I.M.
Jurnal Agroekoteknologi Vol 7, No 1,Jan (2019)
Publisher : Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jaet.v7i1,Jan.19205

Performance of banana cultivars (Musa acuminata L. and Musa balbisiana L.) through in vitro propagation. Supervised by . Ir. Hot Setiado MSc and Ir. Revandy I.M Damanik Msi., Msc., PhD. The objective of the research was to determine the effect of the addition of growth regulator substances NAA and BAP on MS medium on the appearance of banana cultivar morphology and the number of shoots through multiplication in vitro. The research was conducted at Tissue Culture Laboratory. Horticultural Seeds Centre, Medan, North Sumatera, Indonesia, from July 2017 to August 2017. The completely randomized design was used with two factors : the first factor was cultivar (K1: banana barangan; K2: banana kepok) and the second factor was the medium (M0: control; M1: MS + NAA 0.4 ppm + BAP 2 ppm; M2: MS + NAA 0.8 ppm + BAP 5 ppm). The results showed that the cultivar and medium significantly affected the number of roots and plant height. The cultivar and medium showed the highest number of roots and the highest plant height (K1M0).

The Response Growth and Production of Okra (Abelmoschus esculantus L. Moench) upon the Pruning Time of Shoots and NPK Fertilizing Muhammad Sandy Prayudi; Asil Barus; Rosita Sipayung
Jurnal Agroekoteknologi Vol 7, No 1,Jan (2019)
Publisher : Universitas Sumatera Utara

Green okra characteristics are having straight stems and difficult to fork. High fruit production can be obtained in the presence of massive ramification. To form ramification and and fruit production, okra requires pruning of shoots with time and proper fertilization to support the growth of these branches and fruits. This reaserch was conducted at Desa Ladang Bambu, Kecamatan Medan Tuntungan, Medan (35m asl) from April to July 2017. The method used was factorial randomized block dsign with two treatment factors, i.e pruning of shoots (without pruning, age 15 and pruning of 30 days after planting) and NPK fertilization (2,5; 5,0; 7,5 and 10 gr per plant). The results of the study showed that the treatment purning time of shoots age of 15 days after planting significantly affect the parameter of branches quantity, number of productive branches, and weight of fruit per plant. While pruning of shoots age of 30 days after planting had significant effect on bar diameter and parameter of flowering age. NPK 7,5 gr fertilizer can significantly increase the number of productive branch and dose of 5,0 gr can improve the fruit circumference parameters. The interaction between the two treatments significantly affected the fruit circumference parameters.

The Number Population of Elaeidobius kamerunicus Faust. (Coleoptera: Curculionidae) to Pollinate the Oil Palm Flowers Linda Friscilla Jessica Hulu; Maryani Cyccu Tobing; Darma Bakti; Agus Eko Prasetyo
Jurnal Agroekoteknologi Vol 7, No 1,Jan (2019)
Publisher : Universitas Sumatera Utara

Developed-fruit was formed by pollination. One of pollination method could be composed using pollinator beetle such as Elaeidobiuskamerunicus. The objective of this research wasto study the effective of population E. kamerunicus to pollinate the palm oil flowers. It was arrange by Randomized Block Design with four treatments of bug (0, 100, 200 dan 300 adult) and six replication. The results showed that introduction of 200 adults is the most effective population in terms of fruit-bunch average weight (9.858 kg) and fruitlet average weight (7.146 kg). On the other hand, 100 adults is the most effective population amount in terms of fruit-set(56.90 %).

Uji Efektivitas Pengendalian Kimiawi dan Biologi terhadap Hama Penggerek Polong (Maruca testulalis Geyer.) pada Tanaman Kacang Hijau winda arthadinatha lingga; Irda Safni
Jurnal Agroekoteknologi Vol 7, No 1,Jan (2019)
Publisher : Universitas Sumatera Utara

Penelitian ini bertujuan untuk menguji keefektifan penggunaan λ-sihalotrin, ekstrak daun babadotan, dan Bacillus thuringiensis (Bt) komersial dalam mengendalikan hama penggerek polong tanaman kacang hijau di lapangan. Penelitian ini dilaksanakan di desa Klambir V, Kecamatan Hamparan Perak, Kabupaten Deli Serdang dengan ketinggian ± 25 m dpl. Penelitian ini menggunakan Rancangan Acak Kelompok non faktorial, terdiri dari 6 perlakuan yaitu : Kontrol, tanpa pengendalian (28 HST sampai panen), λ-sihalotrin 2 ml/l air seminggu sekali aplikasi (pada 35 HST sampai dengan 56 HST), λ-sihalotrin 2 ml/l air 2 kali aplikasi (35 HST dan 49 HST), ekstrak daun gulma babadotan 50 gr/l air dan Bt komersial (Thuricide HP) 5gr/l air, dengan 4 ulangan. Hasil penelitian menunjukkan bahwa rata-rata persentase polong terserang tertinggi terdapat pada perlakuan tanpa pengendalian sejak 28 HST sampai panen (33,77%) dan terendah pada perlakuan penggunaan insektisida λ-sihalotrin 2 ml/l air seminggu sekali pada 35-56 HST (20,45%). Penggunaan ekstrak daun gulma babadotan 50 gr/l air mampu mengurangi jumlah biji yang terserang hama polong. Produksi kacang hijau tertinggi terdapat pada perlakuan penggunaan insektisida λ-sihalotrin 2 ml/l air seminggu sekali pada 35-56 HST (1,758 Kg) dan terendah pada perlakuan tanpa pengendalian selama pertumbuhan tanaman (0,798 Kg).

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