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INDONESIA
Jurnal Agroteknotropika
Published by Universitas Negeri Gorontalo
ISSN : 22523774     EISSN : -     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Media Publikasi dan Komunikasi Ilmiah bidang Ilmu Tanah, Agronomi dan Hama Penyakit Tanaman.
Arjuna Subject : -
Articles 14 Documents
 1   2 
Hasil Tanaman Jagung yang Dipupuk N, P, dan K di Dutohe Kabupaten Bone Bolango Aluwi, Febrian F. R.; ., Nurdin; Jamin, Fitriah S.
Jurnal Agroteknotropika VOL 01, NO 02, 2012
Publisher : Jurnal Agroteknotropika

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Abstract

The objective of this research was to study the respons of N, P, and K fertilizers and the best combination of it on the maize yields. The experimental design was following random block design that consist of 4 treatments with 3 replications, so there are 12 plot units. Dosages of each treatment were 160 kg Urea, 54 kg TSP, and 90 kg KCl. The result of this research showing that minus one test has significant effect to stem length, stem diameters, and all dry weigh, for 100 gain weigh has not significant effects. The best treatment combination was N+K treatment or minus P.
Model Simulasi Pertumbuhan dan Produksi Tanaman Tebu Pembengo, Wawan; ., Suwarto
Jurnal Agroteknotropika Vol 1, No 1, 2012
Publisher : Universitas Negeri Gorontalo

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Abstract

To reduce the level of difficulty conducting research in complex systems, modeling is defined as simplification of system with mechanistic approach, can be an alternative approach for understanding and prediction ecophysiology process of growth, development and production plants. Modeling the growth of sugarcane crop is expected to be used as a tool to predict the production of sugarcane production as well as in a development area. Research purposes that make simulation model of sugarcane growth and development develop the tools in an effort to plan and optimize the productivity of sugarcane and sugar productivity predicts. The experiment was conducted in Kotabumi of Lampung regency. Began in June 2008 ended in July 2009. Research materials in the form of climate data for 2 years (2008 to 2009), soil data, the data accumulation, and agronomic data. Tool in this study the precipitation gauge type observatory, TL-1 Illuminance meter to measure the radiation coming, belgi drill, sample ring, digital scales and oven. Research using analytical methods or simulation models of plant systems are supported field trials. The model is built based on the variables and parameters obtained from secondary data as well as from experiments. Construction of a simulation model of sugarcane growth and development has been able to simulate and describe the development and growth of sugarcane as shown by the results of field observations. The simulation results for the production of sugarcane harvested biomass 100 ton/ha while the observation of 85 ton/ha (the simulation results have to be in the range of values one standard deviation from the average). Phenological period and the prediction accuracy of the simulation results are relatively consistent with the observation field (simulated total biomass production 115 ton/ha while the observation of 101 ton/ha).
Infiltrasi dan Aliran Permukaan sebagai Respon Perlakuan Konservasi Vegetatif pada Pertanaman Kakao ., Nurmi; Haridjaja, O.; Arsyad, S.; Yahya, S.
Jurnal Agroteknotropika Vol 1, No 1, 2012
Publisher : Jurnal Agroteknotropika

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Abstract

Cacao plant is one of the major commodities of plantation in South East Sulawesi, especially in Konawe regency. Practices of land management implemented by the local farmers to produce this cacao, in many cases are not according to soil and water conservation principles. The research was aimed to investigating the rate of infiltration and runoff on the loca farmers cacao cropping land at different slope as related to canopy cover. The research was conducted in Amosilu village, Besulutu district, Konawe regency, the province of South East Sulawesi, from December 2006 to September 2007. The experimental method with field study was applied in split plot design consisting three factors, namely (i) slope consisting two levels (10-15% and 40-45%) and (ii) age of the cacao plant consisting two levels (5 to 7 month and 25 to 27 month) were used as main plots (P1 = 5 to 7 month and 10-15%; P2 = 25 to 27 month and 10-15%; P3 = 5 to 7 month and 40-45%; and P4 = 25 to 27 month and 40-45%), while (iii) vegetative conservation treatment was used as sub plots consisting three levels, i.e T1 = cacao with disc clearing, T2 = dry field rice and soybean rotation within cacao plant, T3 = T2 + Arachis pintoi as strip plant. There was not interaction between both cacao plant and slope treatment with vegetative conservation treatment to water infiltration and runoff. The result showed that vegetative conservation treatment (T1) that is cacao with disc clearing was best alternative because they were produced the higher rate of total volume of infiltration(18.69 mm) and the lower rate of runoff (2715.44 m3 ha-1 year-1). Analysis of data with ANOVA (analysis of variance) and Duncan Multiple Range Test (P < 0,05) were done by using SAS program.
Laju Infiltrasi dan Permeabilitas Tanah pada Areal Kampus I Universitas Negeri Gorontalo Pomalingo, Nelson; ., Nurdin
Jurnal Agroteknotropika VOL 01, NO 02, 2012
Publisher : Jurnal Agroteknotropika

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Abstract

Land utility for physic buildings on Gorontalo State University campus I has shown rasing significant trends. Whereas, the land was originally rice field productively and water catchments area. Consequently, its function is reduced due to the infiltration of water hampered. This study aimed to (a) determine the amount of soil infiltration rate, and (b) determine the amount of soil permeability. The study was conducted on six months in the campus 1 Gorontalo State University areas. The equipment consists of Guelph permeameter, rol meter, water bag, stop watch, soil bor and raffia. s, the materials consist of water and soil samples. Infiltration measurements carried out in a transect from the south to the north lines. Measurements will be performed at every five meters with two measurements (0-10 cm and 10-20 cm). On existing lines any building or standing crop, the measurement will be carried out on one side to detect the effect of distance and the soil variability. Parameters observed include water infiltration, and soil permeability. The result of this research shown that infiltration rate (i) and soil permeability (Ks) at campus 1 Gorontalo State University areas classified as very rapid. s, the highest of infiltration rate and soil permeability values was to 140 m distance or point 28 and the lowest was to 170 m distance or point 34.

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