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:: Abstract List ::
Page 6 (data 151 to 158 of 158) | Displayed ini 30 data/page
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| 151 |
Soil and Water Engineering |
ABS-114 |
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Analysis of Climate Change in Makassar City using Mann-Kendall Trend Analysis
Miftah Al Ansahri (a*), Samsuar (b), Salengke (b)
a) Agricultural Engineering, Agricultural Faculty of Hasanuddin University.
*aldio.mifta100599[at]gmail.com
b) Agricultural Engineering, Agricultural Faculty of Hasanuddin University.
Abstract
Based on geografical aspects, Indonesia is located on the equator between 6 N and 11 South Latitude and 95 East Longitude to 141 East Longitude, this causes only two seasons in Indonesia, dry season and wet season. As a result of global warming, extreme changes in weather and climate often occur, it can affect environmental conditions which in turn will affect several aspects of human life or activities. Climate change factors, among others- temperature, rainfall, wind speed, sun radiation intensity, and humidity (RH). This research is based on a form of climate change analysis to determine the trend of climate change in an area. The research was conducted using the Mann-Kendall trend analysis method and polynomial function approach to see the occurrence of a shift in the month within 30 years (1990-2019). The results obtained in this study are that there are several factors that indicate significant changes, among others- There is a significant decrease in wind speed and sun intensity, while a significant increase in the maximum and minimum factors and the average temperature. The factors that do not show a significant change include- Rainfall and humidity (RH). Analysis of the shift of the rainy month for 30 years with polynomials obtained by the average value of the early of the dry season on the 135th day and the early of the rainy season on the 304th day, where the average length of the dry season is 169 days (May-October), This analysis of the shifting of months is described in a graph with a trendline which shows that there is no significant change at the early of the dry season and the early of the rainy season, and the length of the dry season for 30 years does not change significantly (constant).
Keywords: Rainfall, Mann-Kendal Test, Trend Analysis, Polynomial
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| Corresponding Author (Miftah Al Anshari)
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| 152 |
Soil and Water Engineering |
ABS-116 |
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Water Salinity Distribution and Irrigation Pump Management in a River Intruded by Sea Water in Tanete Riaja Subdistrict Barru Regency
Ayu Sri Rahayu Hatmus (a*) Daniel Useng (b), Olly Sanny Hutabarat (b)
a) Faculty of Agriculture, Hasanuddin University
Jalan Perintis Kemerdekaan KM 10, Tamalanrea Indah, Makassar, Indonesia
*ayusrirahayu936[at]gmail.com
b) Faculty of Agriculture, Hasanuddin University
Jalan Perintis Kemerdekaan KM 10, Tamalanrea Indah, Makassar, Indonesia
Abstract
In Tenete Riaja Subdistrict, Barru Regency, farmers use water in Lisu watershed as a source of irrigation water by pumping the river water and then flowing it to rice fields. However, when rainfall is low (dry season), the river water has increased salinity levels caused by estuary of the river directly adjacent to the sea so that at high tide while the discharge of flow in the watershed decreases, it will cause the influx of sea water to the river water accompanied by the mass transfer of salt or commonly referred to as seawater intrusion. Increased salinity levels of river water affect the quality of irrigation water that irrigates rice fields and will affect the productivity of crops produced. The purpose of this study is to map the salinity of irrigation water from rivers intrused by sea water in rice fields and know the form of pump management, both in terms of income and financing and productivity of irrigation water produced. The research method conducted is to take samples of river water and rice field water samples and then measure the salinity level, in addition to in-depth interviews to the pump operators are also conducted to obtain data on pump operation during the growing season. Based on the research, the salinity level of each rice field has different values, this is influenced by several factors including the difference in the distance of observation stations with river estuaries, rainfall and irrigation water supply patterns. Then in terms of pump management, the R/C value is 1,77 shows that the farm is profitable, and the water productivity in each rice field area shows effective water use.
Keywords: Water irrigation, Salinity and Water productivity
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| Corresponding Author (Ayu Sri Rahayu Hatmus)
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| 153 |
Soil and Water Engineering |
ABS-118 |
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Water Irrigation Management Technology Based on Internet of Things
Husnulinayah, Fajar Nugraha, Burhanuddin Rasyid
Hasanuddin University
Abstract
Water is one of the main components in agricultural cultivation activities. Water has a very important function for plant growth and development. The problem that is often experienced by farmers is the availability of water for plant cultivation activities. What can be done to overcome the problem of air availability that occurs in semi-technical irrigated rice fields is to improve air management. In Indonesia, many rice fields depend on air availability and air irrigation, so it is necessary to carry out appropriate air management to meet air needs in paddy fields. The purpose of this research is to assist farmers in managing irrigation in paddy fields and to create a technology that is able to overcome water problems in paddy fields based on the Internet of Things. The research was conducted starting with the process of making irrigation technology based on the Internet of Things, then testing the equipment in the Ex Farm experimental garden, Faculty of Agriculture, Hasanuddin University. This technology works by utilizing an internet network that functions to connect smartphones with the technology, thus allowing the technology to be controlled remotely. The technology made is able to identify soil moisture and the pump can be controlled via a smartphone.
Keywords: Cultivation, Irrigation, Technology
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| Corresponding Author (Husnul Inayah)
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| 154 |
Soil and Water Engineering |
ABS-124 |
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Study of Ocean Water Intrusion Dynamics in the LISU River Basin Tanete Riaja District Barru Regency
NURUL DWI RAHMATIKA, DANIEL and MAHMUD ACHMAD
HASANUDDIN UNIVERSITY
Abstract
in Barru Regency South Sulawesi, there are several rivers that have high salinity concentrations. This is due to the location of the river which is directly related to the sea. The Lisu River Basin is one of the rivers that empties directly into the open sea. The watershed is used by the community in agricultural activities such as the use of water for crop irrigation. However, the watershed has problems with seawater intrusion that occurs at the river mouth. This can lead to a decrease in crop productivity along rivers that are intruded by seawater. In the rainy season, the flow of the river will be more so that the pollutants will be pushed into the sea by the large flow of the river. Meanwhile, in the dry season, the river will experience a decrease in water discharge so that it can cause marine intrusion. This is because the river water discharge is not strong enough to withstand the tide of sea water. So the river is indicated to experience sea water intrusion and will have a negative impact on plant productivity. The purpose of this study was to analyze the dynamics of river water quality vertically and horizontally as well as the relationship between water discharge and rainfall to the salinity level of river water. The method of this research is to take samples of river water from several stations that have been determined. Sampling of river water is done by taking samples of river water on the river surface left, left of the riverbed, river surface right and right of the riverbed. Then measure the water quality. Based on the research on the dynamics of salinity of seawater intrusion in the Tanete Riaja sub-district, Barru Regency, it was found that the salinity level caused by seawater intrusion every week shows a dynamic pattern which means that it changes from time to time caused by several factors such as rainfall and discharge.
Keywords: River, Salinity, Water
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| Corresponding Author (Nurul Dwi Rahmatika)
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| 155 |
Soil and Water Engineering |
ABS-126 |
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Thigmomorphogenesis of Drip and Mist Irrigation Methods on Crop Growth of Vegetables
Ilham Nawan Rasyid(1*), Lia Christyaningrum(1), Erlina Fahrunisa(1), Murtiningrum Murtiningrum(1), Ngadisih Ngadisih(1)
1) Department of Agricultural and Biosystem Engineering, Universitas Gadjah Mada, Flora Street No. 1 Bulaksumur, Yogyakarta 55281, Indonesia
*tiningm[at]ugm.ac.id
Abstract
Thigmomorphogenesis is a plant response to stimulation or mechanical pressure from outside the plant which affects the growth and development of plants, one of which is how to provide irrigation water. The purpose of this research was to evaluate the effect of thigmomorphogenesis on the crop growth of three types of vegetables, namely spinach, mustard, and water spinach. The vegetables were cultivated in a screen house and irrigated with drip and mist irrigation. The vegetables were planted in rhizobox-type root windows to observe the root growth. The analysis used in this research included t-test and descriptive analysis. The root length of spinach, mustard, and water spinach with drip irrigation were 15.64 cm, 18.97 cm, and 19,25 cm, respectively. The root length of spinach, mustard, and water spinach with mist irrigation were 16.28 cm, 19.22 cm, and 19.33 cm, respectively. Differences in irrigation also affect the parameters of root physiology, root volume, shoot and root wet weight, shoot and root dry weight, and root-shoot ratio. Drip irrigation had a better impact on the growth of spinach and mustard. While mist irrigation resulted a better impact on the growth of water spinach.
Keywords: Thigmomorphogenesis, crop growth, vegetables, drip irrigation, mist irrigation
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| Corresponding Author (Murtiningrum Murtiningrum)
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| 156 |
Soil and Water Engineering |
ABS-139 |
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TELEMETRY ACQUISITION SYSTEM FOR MONITORING OF AQUACULTURE WATER QUALITY
Ahmad Munir(a*), Arisman(b), Sitti Nur Faridah(a), Juni Astuti(c)
(a)Univ. Hasanuddin, (b) STIBA Makassar, (c) Univ. Cokroaminoto Makassar,
INDONESIA.
Abstract
Measurement and monitoring of water quality in aquaculture must be frequently and intensively conducted, especially in high density cultivation. For this purpose, telemetry can be employed for assisting the measurement and monitoring. The objective of this research is to design a telemetry acquisition system for assisting monitoring of aquaculture water quality. From the experiment, it was found deviation standard for temperature measurement is 1.141 oC, From the measurements of water depth, it was obtained that the deviation of the measurement is equals to 0.948 cm. From the study it was concluded that the telemetry acquisition system is reliable and suitable to be applied in monitoring of water quality in aquaculture.
Keywords: telemetry, data acquisition system, aquaculture
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| Corresponding Author (Ahmad Munir Munir)
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| 157 |
Soil and Water Engineering |
ABS-145 |
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Comparison of Soil Compaction in Bed Areas and Tractor Wheel Tracks in Sugarcane Plantations at Takalar Sugar Factory
Wina Safitri (a*), Ambo Ala (a), Sikstus Gusli (a), Iqbal (a)
(a) Hasanuddin University
*whynasafitrikp[at]gmail.com
Abstract
Soil strength is the main indicator to determine the ability of the soil to withstand changes when under pressure from the outside, for example when tilling using mechanization tools. Soil compaction can inhibit root penetration and result in impaired nutrient absorption. This study aims to determine how much soil compaction in sugarcane land at Takalar factory (PG Takalar). The method used is the measurement of soil permeability by direct sampling in the field with calculations based on Darcy^s law. Determination of the gauge of the compressive force on the soil is by direct measurement in the field using a proving ring penetrometer. The results showed that the soil permeability of sugarcane land at PG Takalar was 1.72 cm/hour in the raised beds area and 1.05 cm/hour on the tractor wheel track. The compressive force required by the cone penetrometer to penetrate the soil layer in the bed area is 50 kgf at a depth of 0-10 cm and 60 kgf at a depth of 0-20 cm. The amount of compressive force required on the tractor wheel track is 70 kgf at a depth of 0-10 cm, and 80 kgf at a depth of 10-20. The cone penetrometer cannot penetrate the soil at a depth of >20 cm. The value of permeability and the required compressive force indicates that the soil is compacting.
Keywords: Soil compaction, soil permeability, tractor wheel track
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| Corresponding Author (Wina Safitri)
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| 158 |
Soil and Water Engineering |
ABS-167 |
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Study of soil physical and chemical properties under ebony (Diospyros celebica Bakh.) stands in provenance of the amaro protected forest, south sulawesi
Mukrimin Mukrimin(a*)
Department of Forestry, Faculty of Forestry, Hasanuddin University, Jln. Perintis Kemerdekaan Km. 10, 90245 Makassar, Indonesia
* mukrimin[at]unhas.ac.id
Abstract
Sulawesi Island has the highest proportion of biodiversity and contains one of the most fascinating and unique flora and fauna. Diospyros celebica Bakh. is one of the Sulawesi^s endemic floras. This study aimed to describe the soil and geographical characteristics of D. celebica Bakh.^s site based on soil conditions, altitudes, geographic position, slopes, and land surface form. This study was carried out in the Protected Forest area of Amaro in Tuwung Village Barru District, Barru Regency, South Sulawesi, and in Silviculture Laboratory, Faculty of Forestry Hasanuddin University Makassar. The results revealed that conditions of soil properties in the study site were relatively more minor support of the growth of Ebony in all sub-populations, particularly the content of C-organic, N-total, and K that was very low to low. Altitudes on the four sub-populations in the study area were from 110 to 150 meters a.s.l. and were suitable for requirements of ebony growth. Slopes of each sub-population varied that sub-population of Tonrong Ceppie was relatively flat, while the sub-population of Deppanae wa s steep. No doubt that the growth rate of Ebony in the study area was affected by soil properties and site characteristics.
Keywords: Ebony, soil, growth, site characteristic, sub-population
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| Corresponding Author (Mukrimin Mukrimin)
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