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INDONESIA
Jurnal Agro Teknologi Tropika
Published by Universitas Riau
ISSN : -     EISSN : 23376562     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Jurnal Agroteknologi Tropika memuat hasil-hasil penelitian mutakhir (5 tahun terakhir), ulasan singkat (review), analisis kebijakan atau catatan penelitian singkat (research note) mengenai teknik percobaan, alat, pengamatan, dan hasil awal percobaan (preliminary result) terkait bidang Ilmu Pertanian seperti : Agronomi, Pemuliaan Tanaman, Ilmu Tanah, Proteksi Tanaman, Mikrobiologi Pertanian, dan bidang ilmu pertanian terkait lainnya. Jurnal Agroteknologi Tropika terbit dua kali dalam setahun pada bulan Januari dan Juni.
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Articles 6 Documents
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Search results for , issue " Vol 1, No 2 (2012)" : 6 Documents clear
Uji Daya Hasil Beberapa Genotipe Cabai (Capsicum annuum L.) Toleran pada Lahan Gambut
Jurnal Agro Teknologi Tropika Vol 1, No 2 (2012)
Publisher : Jurnal Agro Teknologi Tropika

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Abstract

The objective of this research was to evaluate the yield of several genotypes of chili peppers which are to peat soiltolerant. The research was arranged in Randomized Block Design (RBD) consisting of 20 treatments with threereplications. The treatment consisted of 20 genotypes of chili i.e.: genotype C2, C120, C51, C111, C105, C117, C118,C157, C159, F5110005-91-13-5, F5110005-91-13-12, F8002005-2-9-12-1, C140, C5, C18, C19, C143, F512005-5-11-1, C145 and C160. Parameters observed were: the age of flower appearance, height dicotomous, plant height, stemdiameter, canopy width, leaf length, leaf width, age of harvest, fruit length, stalk length of fruit, fruit diameter, weight perfruit, fruit weight per plant. The results showed that all genotypes had variouses adaptability in peat soil. C118 andC160 gave the lowest yield, C18 and C105 gave the medium yield, whereas C2 and C143 gave the highest yield.Keywords: Capsicum annum, peat soil, yield.
Kajian Tingkat Erosi pada Penggunaan Lahan Kelapa Sawit (Elaeis guineensis Jack) di Sub DAS Tapung Kiri
Jurnal Agro Teknologi Tropika Vol 1, No 2 (2012)
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The objective of this research is to observe the erodibility of Sub DAS Tapung Kiri at the Kelapa sawit land systemin Rokan Hulu District and Kampar District. Besides that, the purpose of the research is to know the dominant factorsthat influence the erotion value. The research used surver nethod based on information graphis overlay map with theland unit system, overlay topographic map interpretation, land map system and soil map. The value of erodibility scoresusing prediction erodibility USLE RKLSCP and regression analyses backward elimination to study the dominant factorinfluenced erodibility values. The result showed that there was a variation of TBE on Sub DAS Tapung Kiri with the palmof land system which classified as i.e. low, midlle, and high the highest index of erodibility was found at location 4(Petapahan 2) 15,5. Based on analysis regression backward elimination, there were two dominant factors found: slopelength factor and erodibility factor.Keywords: Erotion, USLE, Sub DAS Tapung
Optimalisasi Produksi Kedelai [Glysine max (L) Merril] pada Kebun Kelapa Sawit di Lahan Gambut dengan Aplikasi Beberapa Komposisi Pupuk dan Pembenah Tanah
Jurnal Agro Teknologi Tropika Vol 1, No 2 (2012)
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Abstract

Planting soybean among oil palm plantations on peat land, with the addition of nutrients and ameliorant with acertain incubation of period, can maintain availability of nutrients for both plants. A research has been by using acompletely randomized design (CRD) consisting of 5 in organic fertilizer and soil ameliorants as treatments and 4replications. The objective of this research is to optimize the production of soybean plants and to formulate package ofefficient technology and environmentally friendly. The results indicated that the use of ameliorant ash organic matterand ash, with a minimum of inorganic fertilizer, application the best effect on the growth and production of soybean gavethe highest production efficiency obtained at 25% of inorganic fertilizer application 15 tons of organic material, 3 tonsof ash after 2 weeks of incubator period This 3 treatments gave 170% higher production than that of no application.Keywords: soybean, fertilizer composition, production
Efisiensi Penggunaan Kalium Pupuk Oleh Beberapa Galur Kedelai (Glycine max (L) Merrill)
Jurnal Agro Teknologi Tropika Vol 1, No 2 (2012)
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In recent years, the main problem in agriculture practices is how to increase the efficiency of K fertilization toachieve high productivity, in both quantity and quality. Potassium fertilizer applied is not completely absorbed by plantduo to nutrient loss from root zone and converting to unavailable form. Beside that, soybean requirement in Indonesiaevery year always mount along with accretion of resident. To fulfill the requirement have to be imported becausedomestic product not yet earned to answer the demand the requirement. Therefore these problems, coupled with increasinguse of K fertilizer and the fact that fertilizer of K are expensive, point to the need that the fertilizer is more and moreimportant. To overcome these problems, efforts need to be corrected to increasing the efficiency of nutrient uptake,especially uptake K nutrient by soybean plant from application of K fertilizer and increasing yield efficiency of seedsoybean for every unit of K fertilizer applied. One of the means to achieve these is used of lines soybeans as will newvarieties, which have superiority of character, and efficiency in K fertilizer uptake. This research aims to know how biguse efficiency fertilizer of potassium at some soybean lines and to see the response of some soybean lines to gift ofpotassium. This research has been executed in Research Site of the Faculty of Agriculture, University of Riau. TheResearch is executed during four months, started from April until July 2010. Desain used by the Randomized Blok Design(RAK) with two factors. The first factor is the genotype of soybean, i.e.: line 11 AB, line 13 ED, line 14 DD, line 19 BE,and line 25 EC. The second factor is the rate of potassium fertilizer, i.e.: without potassium, 50 kg KCl/ha, 100 kg KCl/ha. Hence, there were 15 treatment combinations, each with three replications.The results showed that the effect of Kfertilizer was not significant on parameter of absorption of potassium, efficiency of potassium absorption, produce seedsper plot and efficiency of seed produced. Among the five genotypes, line 14 DD shows responsifity to application ofpotassium fertilizer at rate 50 kg KCl/ha and also 100 kg KCl/ha, was indicated by positive value on parameterefficiency of seed produced, efficiency of potassium absorption and production of seed per plot. Where as the others linesof soybean indicated negative value on the efficiency of potassium absorption and the efficiency of seed production,meant the application of K fertilizer 50 kg KCl/ha and 100 kg KCl/ha were lower production than without K fertilizerapplication. In general, K fertilizer application on the soil which have moderately low K (0,35 cmol(+)/kg) were notefficient to increase seed production of soybeans, except on lines 13 ED and 14 DD were efficiency if giving 50 kg KCl/ha.Keywords: efficiency, potassium fertilizer, soybean
Serapan Hara N, P, K dan Pertumbuhan Tanaman Padi (Oryza sativa L.) di Medium Gambut yang Diaplikasikan Amelioran Dregs dan Pupuk N, P, K
Jurnal Agro Teknologi Tropika Vol 1, No 2 (2012)
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Peat soil is one of the ecosystems which considerable potential in Riau Province to be developed as agricultural land.Besides low nutrient availability, other factors that inhibit the growth of plants on peat soil are higher organic acid content.To overcome this, dregs can be applied. The research has been conducted the experimental farm of Agriculture Faculty,University of Riau, Pekanbaru on April-Augst 2011. The experimental units were arranged in factorial completely rendomizeddesign. The first factor is the dose of dregs consisting of three levels: D0 = without giving dregs, D1 = 2.5 tons/ha of dreg,and D2 = 5 tons/ha of dreg. The second factor is the dose of N, P, and K fertilizers consisting of three levels: P1 =recommended dosage, P2 = 1.5 x the recommended dosage, and P3 = 2 x recommended dosage. The results showed that thedoses of dregs at 2.5 tons/ha and 5 tons/ha in general tended to increase the height, the maximum number of tillers, dryweight of roots, and plant canopy dry weight at age 48 HST, comparing to no dregs at each dose of N, P, and K fertilizers(1, 1.5 and 2 times the recommended dosage). Nutrient of N absorption by roots and canopy, respectively increased by29.87% and 299.08%, nutrient of P absorption by roots and canopy increased by 13.89% and 239.52, and nutrient of Kabsorption by roots and canopy increased by 16.97% and 153% with the application of 5 tons/ha dregs followed by theapplication of N, P, K fertilizer with 2 times of the recommended dosage compared to the application of N, P, K fertilizer with1 times of the recommended dosage that followed no dregs application.Keywords: peat soil, paddy, ameliorant dregs, NPK nutrient
Pengaruh Pemberian Berbagai Macam Kompos pada Lahan Ultisol terhadap Pertumbuhan dan Produksi Jagung Manis (Zea mays Saccharata Sturt)
Jurnal Agro Teknologi Tropika Vol 1, No 2 (2012)
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Abstract

Sweet corn has a high nutrient content, have a good taste for the public, so that demand is rising but it is notaccompanied by an increase in production, so that there is insufficient supply of sweet corn. Compost is one of organicfertilizer derived from the rest waste of animal or plant. Ultisol soil has relatively low acidity levels, dosages of fertilizer, andthe availability of organic matter and other obstacles in agriculture. One way to overcome this problem is by composting.The purpose of this research was to determine the effect of good compost from the growth and production of sweet corn.This research has been completed in the site of Faculty of Agriculture, University of Riau using a Complete RandomizedDesign with 6 treatments and 4 replications. The further test has conducted using DNMRT 5%. The result showed that amixture of compost and stover rice straw rice straw compost will provide a high return on investment of growth andproduction of sweet corn.Keyword : sweet corn, ultisol soil, compost

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