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INDONESIA
AGROLOGIA : Jurnal Ilmu Budidaya Tanaman
Published by Universitas Pattimura
ISSN : 23017287     EISSN : 25809636     DOI : -
Core Subject : Science, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science
Agrologia: Journal of Plant Cultivation is a means of publicizing the results of research and articles. The scope of the study published in Agrologia includes: - Agronomy - Plant diseases and pests - Soil science - Environment
Arjuna Subject : -
Articles 176 Documents
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Relationship between pH, Eh, and EC with Coconut Production at Different Growing Location Andreas Izzac Latupapua
Agrologia Vol 9, No 1 (2020): Agrologia: Jurnal Ilmu Budidaya Tanaman
Publisher : Faculty of Agriculture, Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/a.v9i1.1057

Abstract

Three soil chemical properties including pH, Eh, and EC can affect coconut (Cocos nucifera, L.) production. The value of each parameter is usually different from coastal and mountainous soils. This study aims to determine the relationship between pH, Eh, EC and the coconut production of the coastal and mountainous areas. The study method was survey, soil samples were taken at 40 cm depth around the coconut trees, and the number of coconut fruit per tree was observed to determine coconut production. The results showed that the pH, Eh and EC significantly affect the production of the coastal coconuts, while pH significantly affects the production of the mountainous coconuts. The production of the mountainous coconuts reaches 80.4 kg / tree, while the coastal coconuts is 72.4 kg / tree.
Morphometric and Hidrological Characteristics of Way Apu Watershed Regency Of Buru Rafael M. Osok; Silwanus M. Talakua; Alfredo Manusama; Pieter J. Kunu
Agrologia Vol 9, No 1 (2020): Agrologia: Jurnal Ilmu Budidaya Tanaman
Publisher : Faculty of Agriculture, Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/a.v9i1.1058

Abstract

Morphometry is important characteristics to understand hydrological processes of a catchment.The research purpose was to study  the morphometry and flood discharge characteristics of the Way Apu Watershed. Morphometrics data were measured using topographic maps and SIG-ArcView. The frequency distribution of rain was calculted using the Log-Pearson Type III, Gumbel, Normal, Log-Normal methods, and the design rainfall was determined according to 2, 5, 10, 25, 50, and 100 years return periods. The flood discharge was calculated using the rational method, while the hydrograph unit was established using the Nakayasu method. The result showed that the watershed roundness ratio is 0.46 and the elongated ratio is 0.86 indicating the elongate watershed form. The design Rainfall of the return periods of 2, 5, 10, 20, 25, 50 and 100 years range from 37.59 - 185.14 mm (Log Pearson Type III), 41.32 - 180.28 mm (Gumbel), 47, 68 - 139,98 mm (Normal), and 36,82 - 203,66 mm (Log-Normal). The Smornov-Kolmogorof test results show that the Log-Pearson Type III, Gumbel, and Log-Normal methods are suitable to calculate the design flood discharge. Data of the design flood discharge of Gumbel is suited for 25 years of waterwork plan, while Log-normal is suited for 100 years plan. Based on the Nakayasu Synthetic Hydrograph Unit, the river capacity of the Way Apu watershed is 21.37 m3/sec.
Climate Characteristics of Romang Island Semuel Laimeheriwa
Agrologia Vol 9, No 1 (2020): Agrologia: Jurnal Ilmu Budidaya Tanaman
Publisher : Faculty of Agriculture, Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/a.v9i1.1059

Abstract

Climate is a very dynamic agriculture production factor and varies according to space and time. Therefore, understanding climate characteristics by analysing and interpreting climate data is the needed in agriculture sector. The objective of the research was to present climate characteristics of Romang Island that are used in the agriculture sector. The climate data was obtained from Rainfall Station of Hila, Climate Station of Lakuwahi, and the Meteorology Station of Saumlaki. Rainfall data was analysed using several methods, namely (1) technique of algebra average, (2) Oldeman equation (1977), (3) Schmidt-Ferguson (1951) and Oldeman (1975) climate classification system; and ( 4) Modified Penman method. The result of data analysis indicated that climate of Romang Island is slightly wet characterized by annual average rainfall of 2.628 mm, with 75%  rainfall probability which is equal to 1.794 mm/year. The climate type of Romang Island is B and D1 according to Schmidt-Ferguson and Oldeman classification system, respectively with 11 months of growing season. The highest air temperature is found on November-December and the lowest on months July-August. Humudity is high during the rainy season (December-June) and low during dry season (July-November). While, the sun radiation is longer during dry season and shorter during the rainy season. The annual potential evapotrasnpirasi is 1.771 mm, average wind speed ranges from 1,7 to 4,0 km/hour with the maximum 34 - 58 km/hour.  Annually air temperature in this region has been increased as much as 0,0219ºC, while  rainfall experiences 5% increasing from period of  (1959-1988) to (1989-2018) to the previous period.
Application of Biofertilizer Consortium of Strain Bacillus sp with Different Concentrations and Aplication Methods on Growth of Nutmeg Seeds (Myristica fragrans Houtt) A. Marthin Kalay; Henry Kesaulya; Abraham Talahaturuson; Herman Rehatta; Reginawanti Hindersah
Agrologia Vol 9, No 1 (2020): Agrologia: Jurnal Ilmu Budidaya Tanaman
Publisher : Faculty of Agriculture, Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/a.v9i1.1060

Abstract

The growth of nutmeg seeds requires adequate nutrition by mechanism of bacteria activity associated with roots and leaves. The aim of study was to determine the effect of application of bacillus strain consortium biofertilizer on nutmeg seedlings. The experiment was arranged by using completely randomized design with 0% of PBH as control, and 0.15% and 0,30% of PBH concentration by spraying to leaves and by pouring in the soil around the stem, respectivelly. The results showed that the application of 0.15% and 0.30% of PBH concentration has significant effect in plant height, shoot dry weight, dry weight root and plant dry weight, but not at the number of root, root length, stem diameter, and the ratio of shoot and root dry weight of nutmeg seedlings after four month planting in the polybag. The concentration of PBH 0.30% has a greater influence on the nutmeg seed growth, and can be a solution to increasee  seed growth. 
Effect of Sublethal Dose/Concentration on Various Insect Behaviors Victor George Siahaya
Agrologia Vol 10, No 1 (2021): Agrologia: Jurnal Ilmu Budidaya Tanaman
Publisher : Faculty of Agriculture, Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ajibt.v10i1.1296

Abstract

Most of the studies on the impact of insecticides have always used acute toxicity with an indicator of death, whereas the lethal effect cannot fully determine the effect of the insecticide on insects. Overall, the effect of sublethal dose/concentration of insecticides can cause biological effects, disrupt egg number, laying period, larva and pupal weight, development period, life span and fertility rate, in addition to influencing feeding behavior, spawning period, locomotor system and reducing or increasing production and response to pheromones, physiological effects on the reproductive and immune systems and the nutritional status of insects. This suggests that the sublethal effect is very important to form the basis for analysis of insecticide risk. In addition, the sublethal effect also affects the presence of natural enemies and other useful insects, so it is hoped that more studies on their impact on non-target insects are expected.Keywords: biological effects, natural enemies, pheromones, sublethal effect
Azotobacter and Pseudomonas Population in Rhizosphere and Yield of Choy Sum following Chemical Fertilizer and Biofertilizer application Reginawanti Hindersah; Nini Mila Rahmi
Agrologia Vol 9, No 2 (2020): Agrologia: Jurnal Ilmu Budidaya Tanaman
Publisher : Faculty of Agriculture, Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ajibt.v9i2.1161

Abstract

The limestone hilly landscapes, well  known as karst hills, in Muna Island resulted in natural grow of cashew (Anacardium occidentale L.). The karst area alos  support the cultivation of local food crops such as maize. Both local products need to be maintained in order to increase the community's revenue and give the identity to Muna Island as cashew nuts and maize producer. Cashew and maize are the leading commodities of Muna Island. This article describes the cultivation conditions and economic value of cashew nuts and maize in Muna Island. However, to achieve optimal production and selling value, technology adoption either in the field or  post-harvest, needs to be improved especially for cashew.
Analysis of Nutritional Composition of Five Growing Waxy Vegetable Varieties In West Halmahera Regency North Maluku Fitri Wahyu Wijayanti; Stevani B. Fara
Agrologia Vol 10, No 1 (2021): Agrologia: Jurnal Ilmu Budidaya Tanaman
Publisher : Faculty of Agriculture, Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ajibt.v10i1.1297

Abstract

The wax vegetable plant (Saccharum edule) is a type of sugarcane plant, has many types and can be found in several regions in Indonesia. This study aims to determine the nutritional content of five varieties of vegetable Lilin cultivated in West Halmahera Regency North Maluku. This research is using experimental method. Using short white, long white, long white, red, short yellow and long yellow wax vegetables, which are cultivated in West Halmahera Regency, North Maluku. The variables observed included moisture content, fat content, protein content, ash and carbohydrate content. The results showed that the moisture content ranged from 87.59% - 91.76%, fat content ranged from 0.25% - 0.67%, protein content ranged from 3.19% - 4.17%, ash content ranged from 1, 40% - 1.56%, and the carbohydrate content ranges from 3.41% - 6.20%. In terms of nutritional content (fat, protein and carbohydrates), short yellow and long yellow varieties have a higher value.Keywords: Nutritional content, Candle Vegetables, West Halmahera
The Effect of Nitrogen Addition in Liquid Fertilizers and Seasons on the Active Content of Epigallocatech in Gallate (EGCG) Tea Shoots (Camellia sinensis L.) Zakarias F. M. Hukom
Agrologia Vol 9, No 2 (2020): Agrologia: Jurnal Ilmu Budidaya Tanaman
Publisher : Faculty of Agriculture, Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ajibt.v9i2.1159

Abstract

Epigallocatechin Gallate (EGCG) is a bioactive compound derived from tea shoot catechin that posing very high antioxidant. EGCG is widely used as raw materials in therapeutic healing of various degenerative diseases. EGCG content in tea shoots is largely determined by climatic factors and cultivation technique management, especially nitrogen nutrient supply as a key element in the early stages of catechin precursor biosynthesis. This study aims to determine the effect of adding N levels in liquid and seasonal fertilizers on the active content of EGCG tea shoots. The experimental design used was a complete randomized consisting of 5 levels of fertilization in rainy and dry seasons. The results showed that the application of liquid fertilizer without the addition of N in the dry season has a significant effect on the EGCG content of tea shoots and 12,35% higher than the rainy season. The EGCG content in the dry season is 97.45% to 98.16% higher than the rainy season, and 63.73% is higher than the control plants in the dry season.
The Ability of Neem Leaf Extract (Azadirachta indica) To Suppres The Populationof Brown Planthopper (Nilaparvata lugens) On Rice Plant Martua S. Sianipar; Lucyana Jaya; Roynaldi Sinaga
Agrologia Vol 9, No 2 (2020): Agrologia: Jurnal Ilmu Budidaya Tanaman
Publisher : Faculty of Agriculture, Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ajibt.v9i2.1165

Abstract

Brown Planthopper (Nilaparvata lugens) is the main pest of rice plants. Alternative controls such as the use of plant extract are being promoted. Neem is a botanical pesticide using for insect pests control, and its anti- bacterial, insecticide, fungicide and nematicide activities has been using as a pest control agent in plant cultivation. The experiment was carried out in the Greenhouse of Faculty of Agriculture, Universitas Padjadjaran. The experiment was designed in the Randomized Block Design with 5 treatment and 5 replications. The treatment tested was the concentration of neem leaf extract. The Mortality of brown planthoppers was calculated based on the number of dead brown planthopper compared to the initial number. The results of the experiment showed that neem leaf extract was able to suppress the brown planthopper population. The ectract treatment at the 10% of concentration for Neem plants can reduce the population of brown planthopper for about 78%.
Use of Endophytic Trichoderma to Control Fruit Rot Phytophthora infestans, Growth and Yield in Tomato Malaky Wattimury; Johana Taribuka; Adelina Siregar
Agrologia Vol 10, No 1 (2021): Agrologia: Jurnal Ilmu Budidaya Tanaman
Publisher : Faculty of Agriculture, Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ajibt.v10i1.1298

Abstract

Endophytic Trichoderma is a fungus found in plant tissue and has the potential as a plant biological control agent. The aim of this study was to study endophytic Trichoderma isolated from tomato roots, stems and leaves to control Phytophthora infestans fruit rot and growth and yield of tomato plants. The treatments that were tested were endophytic tricoderma isolated from the roots, stems and leaves of tomato plants and applied with doses of 50, 75, and 100 g per tomato plant, respectively. The experimental design used a completely randomized design with three replications. The observed variables were disease intensity, plant height, number of flowers formed, and number of fruits formed. The results showed that the endophytic Trichoderma used could control the pod rot disease of Phytophthora infestans as well as increase the growth and yield of tomato plants. Giving endophytic Trichodema from roots applied with a dose of 100 g is the best treatment because it can reduce disease intensity by 48.02%, while giving at a dose of 75 g per plant is the best treatment because it can increase plant height by 51.74%, the number of flowers formed amounted to 68.42% and the number of fruit formed was 74.70%.Keywords: Endophytic Tricoderma, Tomato, Phytophthora infestans.

Page 13 of 18 | Total Record : 176

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