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Benny Hidayat
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PERTANIAN TROPIK
Published by Universitas Sumatera Utara
ISSN : 26557576     EISSN : 23564725     DOI : https://doi.org/10.32734/jpt.
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Tropical Agriculture Journal (JPT) is a peer-reviewed online journal of Agriculture Postgraduate Study Program Universitas Sumatera Utara (USU). Journal is a result of research, or scientific reviews of researchers, students and agricultural institutions, and others related to agricultural studies in the tropical region. Published in Indonesian and English language with 3 volumes/year (April, August, December). These articles are indexed by Google Scholar, PKP Indexing, RootIndexing, Portal Garuda, Indonesian Publication Index (Garuda Portal), One Search Perpustakaan Nasional, BASE (Bielefeld Academic Search Engine), and Directory of Research Journal Indexing (DRJI), JPT is member of AJPI (Association of Indonesian Agriculture Journal, and strives to be a means of periodic, accredited, national scientific publications or reputable international publications through.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 378 Documents
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Saepo Modi and Correlation among Statistical Methods for Measuring of Phenotypic Stability Sabam Malau; Albiner Siagian; Maria Rumondang Sihotang; Rosnawyta Simanjuntak; N.D.M. Romauli Hutabarat
Jurnal Pertanian Tropik Vol. 6 No. 2 (2019): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (926.844 KB) | DOI: 10.32734/jpt.v6i2.3159

Abstract

A stabile phenotype is desired. Many statistical methods are available to measure stability. So far, the choice of parameter of stability depended on the perception on the interaction of genotype and environment or ease of counting. The goal of this research was to study correlation among stability parameters. In total of 16 stability parameters were used in this research. Saepo modi (SMsp) as a stability parameter was also used. Branch rust incidence, leaf rust incidence, and leaf rust severity on Arabica coffee were used as variables. This research result showed that none of the parameters of stability correlated significantly with all parameter of stability. It coud be concluded that if someone want to use only one stability parameter, it is preffered to make use of regression and deviation from regression (D2i). In the case a researcher needs to use several of parameters of stability, Saepo modi (SMsp) might be exercised.
Pengaruh Sistem Tanam Jajar Legowo yang Dimodifikasi dan Jumlah Bibit Terhadap Pertumbuhan dan Produksi Padi Sawah (Oryza sativaL.) di Desa Tanjung Rejo Kecamatan Percut Sei Tuan Endow Richardo; Erwin masrul Harahap; Benny Hidayat
Jurnal Pertanian Tropik Vol. 6 No. 3 (2019): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (383.638 KB) | DOI: 10.32734/jpt.v6i3.3163

Abstract

Peningkatan produksi padi di Indonesia dipengaruhi beberapa faktor, salah satu yaitu penggunaanjumlah bibit serta pengoptimalan populasi tanaman melalui jarak tanam padi. Penelitian bertujuanuntuk mempelajari pengaruh sistem tanam jajar legowo yang dimodifikasi dan jumlah bibit.Penelitian ini dilaksanakan di lahan sawah Desa Tanjung Rejo Kecamatan Percut Sei Tuan KabupatenDeli Serdang dan dimulai pada bulan Mei sampai dengan September 2017. Penelitian inimenggunakan Rancangan Acak Lengkap 2 Faktor, yaitu jumlah bibit ( 1 bibit, 2 bibit, 3 bibit ) danPopulasi tanaman berdasarkan sistem tanam jajar legowo yang dimodifikasi ( sistem tanam jarakkonvensional dengan populasi 48 rumpun per petak, sistem tanam jajar legowo dengan populasi 60rumpun per petak, sistem tanam jajar legowo dengan populasi 114 rumpun per petak, sistem tanamjajar legowo dengan populasi 154 rumpun per petak, sistem tanam jajar legowo dengan populasi 190rumpun per petak). Hasil penelitian menunjukkan bahwa penggunaan 2 bibit per rumpun dan sistemtanam jajar legowo dengan populasi 60 rumpun per petak berpengaruh secara nyata dalammeningkatkan produksi padi sawah (Oryza sativa L.). Interaksi antara faktor jumlah bibit danpopulasi tanaman tidak meningkatkan pertumbuhan tetapi berpengaruh nyata meningkatkan produksipadi sawah (Oryza sativa L.).
Effect of Activator on Levels of C, N, P and K Compost of Salak Sidimpuan Leaf Midrib Rizky Amnah; Meiliana Friska
Jurnal Pertanian Tropik Vol. 6 No. 3 (2019): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (367.339 KB) | DOI: 10.32734/jpt.v6i3.3164

Abstract

Salak Sidimpuan leaf midrib is abundant pruning waste. Salak Sidimpuan leaf midrib can becomposted containing a number of nutrients (carbon, Nitrogen, phosphorus, and potassium) for plantgrowth. To speed up the process of composting of salak leaf midrib can be done by giving a numberof activators. This study aims to see the effect of activator on the level of elements C, N, P and Kcompost of salak Sidimpuan leaf midribs. This study used a one-factor randomized block design with4 levels of treatment of activator, K0 = control, K1 = chopped midribs+cow manure fertilizer, K2 =chopped midribs+EM4, K3 = chopped midribs+cow manure fertilizer+EM4) with three replications.Data were analyzed with ANOVA and continued with DMRT test at 5% level if the F test showed areal effect. The results showed that the K2 with treatment chopped salak Sidimpuan leaf midrib andEM4 activator tended to give the best results in reducing the levels of C-organic and C/N ratio aswell as increasing total Nitrogen, total phosphorus and total potassium after composting comparedto other activator delivery treatments.
Morphological Characteristic of Apple Velvet (Diospyros blancoi) at Germplasm Garden of LIPI Cibinong Collection Puspita Deswina; Novia Delliasari Aliyya Az Zahra; Etty Hesthiati Hesthiati
Jurnal Pertanian Tropik Vol. 6 No. 3 (2019): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (536.138 KB) | DOI: 10.32734/jpt.v6i3.3165

Abstract

Apple velvet (Diospyros blancoi) is one of the local fruits which classified as a rare planteven it has high economic value. Apple velvet has various morphology that needsselection from any various characters to identify the most superior character and hashigh potential to be developed. The analysis of diversity from one population can beidentified to know the morphology character from the plant. The commonly usedcharacteristics include tree trunks, leaves, flowers, fruits, and seeds. This study wasconducted using the quantitative and qualitative methods the result of the characterizedplants showed that the apple velvet plants in Germplasm Collection Garden of LipiCibinong have the average height between 3.5-15 m, stem diameter between 14.1-72.29cm has no shapes of leaves such as oval and wide oval. White flower crown, 2 shapes offruits such as round and oval pattern, 2 shapes of seeds such as elliptic and biconvex.Keywords: apple velvet plants, characterization, rare plant
Response of Growth and Production of Corn (Zea Mays L) with Liquid Fertilizer in Labuhan Batu Regency Fitra Syawal Harahap Harahap; Hilwa Walida; Dahrul Aman Harahap; Roswita Oesman; Wizni Fadhillah
Jurnal Pertanian Tropik Vol. 6 No. 3 (2019): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (384.751 KB) | DOI: 10.32734/jpt.v6i3.3166

Abstract

Growth and Production of Corn Plants (Zea mays L) with Provision of liquid supplementary fertilizer(PPC) is an alternative fertilizer that can increase plant growth and production. The constituents of thenutrients can provide elements that are not present in the soil. This study aims to get the right dose forgrowth and production of corn (Zea mays L). The treatment consists of 7 levels O0 = N, P, KRecommended dosage (Urea = 5 g / array; TSP = 2.50 g / KCl array = 1.87 g / array) O1 = Standardorganic compost / fertilizer (gr / plot) ) + N, P, K (Urea = 5 g / bolt; TSP = 2.50 g / bolt; KCl = 1.87 g/ bolt) O2 = 0.75 ml Primatan + N, P, K (Urea = 5 g / run; TSP = 2.50 g / run; KCl = 1.87 g / run) P3= 1.12 ml Primate + N, P, K (Urea = 5 g / run; TSP = 2.50 g / extract; KCl = 1.87 g / extract) O4 =1.5 ml Primatan + N, P, K (Urea = 5 g / extract; TSP = 2.50 g / extract; KCl = 1.87 g / array) O5 =1.5 ml Primatan + 0.75 N, P, K (urea = 3.75 g / run; TSP = 1.87 g / run; KCl = 0.14 g / run) O6 = 1.5ml primatan + 0.50 N, P, K (urea = 2.50 g / bolt; TSP = 1.25 g / bolt; KCl = 0.93 g / bolt). TreatmentP2 = 0.75 ml Primatan + N, P, K (Urea = 5 g / line; TSP = 2.50 g / line; KCl = 1.87 g / line) is able togive the best results for all parameters, namely plant height amounting to 44.09 cm, leaf area 241.19mm3, biomass weight per plant sample 271.50 g, selling fresh weight 225.50 g, total chlorophyll30.93units / 6 mm3.
Efect of palm oil factory sludge manure on the growth and yield of cabbage Lukas Sebayang
Jurnal Pertanian Tropik Vol. 6 No. 3 (2019): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (251.72 KB) | DOI: 10.32734/jpt.v6i3.3167

Abstract

Palm sludge is a source of organic material potential to increase cabbage production. The researchwas conducted at Berastagi Sub Research Institute for Horticulture at 1.230 m above sea level onSeptember 2017 to January 2018. The purpose of this study was to determine the effect of palm oilfactory sludge manuring on cabbage growth and yield. The experiment used Randomized BlockDesign with 5 replications. The results indicated that treatment of NPK + Cattle manure at 30 tons/hawas the highest yield (73.4 tons/ha) followed by treatment NPK + Palm Oil Factory Sludge at 15tons/ha ( 69.6 tons/ha). The used of fertilizer combination of NPK + Palm Oil Factory Sludge at 15tons/ha was recommended.
Effectiveness Test of Tagetes erecta L Powder and Cattle Urine Waste that Potentially Repelent ont Boring Pests of Nezara viridula Pods in Soybean (Glycine max L) in Patumbak Subdistrict, Deli Serdang, North Sumatra Rini Susanti; Andini Hanif; Lisdayani
Jurnal Pertanian Tropik Vol. 6 No. 2 (2019): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (438.102 KB) | DOI: 10.32734/jpt.v6i2.3168

Abstract

Soybean plants (Glycine max) are the third most important food commodity crop after rice and corn. Soybean production continues to be improved in meeting community needs, but efforts to increase soybean production still face problems, namely green ladybird pest (N. viridula L.). One alternative to control soybean pod sucking insects that are relatively safe, inexpensive, and easily obtained is the use of vegetable insecticides. Vegetable insecticides do not quickly cause pest resistance, are synergistic, and their use can be combined with other pest control techniques. One of them is by using Tagetes erecta plants combined with cow urine as a vegetable insecticide. The use of repellents generally does not directly kill insects, but rather serves to reject the presence of insects, mainly due to the pungent smell. The use of cow urine as a mixture of biopesticides contains growth stimulants and contains repellents for several types of insect pests. This study aims to determine the effectiveness of Tagetes erecta in reducing the population of N.viridula pests in soybean plants (Glycine max L.Merr). Non Factorial RAK with 5 levels of treatment and 5 replications. Hopefully with this study farmers can take advantage of tagetes erecta and cow urine waste that can be used as natural pesticides and can be used as a control for Hama Nezara viridula which is environmentally friendly and economic.
Pertumbuhan dan Produksi Beberapa Varietas Kedelai (Glycine max L. Merrill) pada Aplikasi Kompos Azolla Laila Nazirah
Jurnal Pertanian Tropik Vol. 6 No. 2 (2019): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (447.15 KB) | DOI: 10.32734/jpt.v6i2.3171

Abstract

Pertumbuhan dan hasil beberapa varietas kedelai (Glycine max L. Merrill) terhadap pemberian pupuk organik (Azolla pinnata). Tujuan untuk mengetahui respon pertumbuhan dan hasil berbagai varietas kedelai terhadap pemberian pupuk kompos Azolla pinnat. Bahan yang digunakan dalam penelitian ini adalah benih kedelai varietas Baluran, Anjasmoro, Kipas Merah, kompos Azolla pinnata, pupuk majemuk Phonska dan Polybag. Metode Penelitian menggunakan rancangan acak kelompok (RAK) pola faktorial. Terdiri dari dua faktor yaitu Faktor pertama adalah jenis varietas, yaitu :V1 = Baluran, V2 = Anjasmoro dan V3 = Kipas Merah. Faktor kedua adalah perlakuan kompos Azolla pinnata, yaitu : A0 = 0 g/polybag, A1 = 20 g/polybag, A2 = 40 g/polybag dan A3 = 60 g/polybag sehingga terdiri dari 12 kombinasi percobaan, masing-masing percobaan terdiri dari 3 ulangan. Perlakuan varietas memberikan pengaruh terhadap tinggi tanaman, jumlah daun trifoliat bobot biji kering dan bobot 100 biji, perbedaan setiap varietas memiliki respon yang berbeda beda terhadap lingkungan tumbuh. Varietas kipas merah (V3) mampu beradaptasi baik dibandingkan dengan verietas anjasmoro (V2) dan baluran (V1) terhadap pertumbuhan tinggi tanaman, jumlah daun trifoliat umur 2, 4, 6 dan 8 MST, bobot biji kering dan 100 biji. Dosis kompos Azolla pinnata 60 g/polybag mampu meningkatkan pertumbuhan dan hasil tanaman.
Pengaruh Pupuk Organik dan Anorganik terhadap Pertumbuhan dan Produksi Jagung Manis (Zea Mays Saccharata) Di Jepara Vina Triana; Dwi Retno Lukiwati; Yafizham
Jurnal Pertanian Tropik Vol. 6 No. 2 (2019): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (471.18 KB) | DOI: 10.32734/jpt.v6i2.3173

Abstract

Pertumbuhan dan hasil produksi jagung manis sangat ditentukan oleh pemupukan, baik organic ataupun anorganik. Penelitian ini bertujuan mengkaji pupuk kandang (pukan) plus terhadap pertumbuhan dan produksi jagung manis. Pukan plus adalah pupuk kandang diperkaya NP (nitrogen fosfat) organik, masing-masing berasal dari daun lamtoro dan batuan fosfat (BP). Penelitian menggunakan rancangan acak kelompok (RAK) monofaktor dengan empat kali ulangan, dengan perlakuan T0 (TSP + ZA), T1 (pukan sapi) + TSP + ZA, T2 (pukan kambing) + TSP + ZA, T3 (pukan ayam) + TSP + ZA, T4 (pukan sapi + BP + lamtoro), T5 (pukan kambing + BP + lamtoro), T6 (pukan ayam + BP + lamtoro). Semua plot dipupuk KCl sebagai pupuk dasar. Parameter yang diamati meliputi jumlah daun, panjang tongkol, diameter tongkol, berat tongkol dengan klobot, dan jumlah baris biji dalam tongkol. Data dianalisis ragam dan uji lanjut dengan Duncan’S Multiple Range Test (DMRT). Hasil penelitian menunjukkan bahwa parameter jumlah daun, diameter tongkol, dan berat tongkol dengan klobot pada perlakuan T1, T2, T3, T5 dan T6 masing-masing berbeda tidak nyata terhadap T0. Hasil tersebut menunjukkan bahwa T5 tidak berbeda nyata terhadap T2, T6 tidak berbeda nyata terhadap T3, namun T4 nyata lebih rendah dibanding T1. Semua perlakuan tidak memberi pengaruh nyata terhadap parameter tinggi tanaman, panjang tongkol dan jumlah baris biji dalam tongkol.
Response of growth and production of pakcoy (Brassica rapa L.) through hydroponic system with different types of planting media and aeration Rona Charitsabita; Endang Dwi Purbajanti; Didik Wisnu Widjajanto
Jurnal Pertanian Tropik Vol. 6 No. 2 (2019): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (509.021 KB) | DOI: 10.32734/jpt.v6i2.3174

Abstract

The use of appropriate planting media and suitable aeration in hydroponic crop cultivation need to be considered to produce maximum plant growth and production. The research was aimed to examine the interaction between planting media and aeration on the growth and production of pakcoy plants. The research was conducted on February -March 2019 at the green house of the Food Crops and Horticulture Seeds Department of Central Java Province and the Ecology and Crop Production Laboratory of the Faculty of Animal and Agricultural Sciences, Diponegoro University, Semarang. A completely randomized design of factorial pattern was used throughout the experiments. The first factor consisted of husk charcoal (M1), cocopeat (M2), and moss (M3) planting media, respectively. While the second factor consisted of 24 hours/day (A1), 12 hours/day with 30 minutes “on/off" intervals (A2), and 6 hours/day with 45 and 15 minutes “on/off" intervals (A3) of aeration. Each experimental unit was repeated 3 times. Six crops were planted on the basin, size 38 x 31 x 11 cm as one experimental unit. Parameters observed included leaves number, crop growth rate, plant production, and plant dry weight. The results showed that the treatment of moss planting media with 24 hours/day aeration gave high results on the parameters of leaves number and plant production but not significantly different from the treatment of cocopeat planting media with 12 hours /day aeration.

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