Hermantoro Sastrohartono

• Institut Pertanian Stiper

Sandy soils are marginal soils that have potential in the form of land availability and limiting factors that pose challenges to oil palm cultivation. We believe mapping and improving these limiting factors can increase the potential of sandy soils to support oil palm cultivation. This systematic review aims to summarise and collect data on the res...

The demands of productivity and efficiency of oil palm plantations can be met by implementing Precision Farming (PF), where production analysis is carried out on a narrower area. Currently, yield evaluation or harvest results are carried out based on block area (25-100 Ha). The diverse information in one block is standardized, potentially eliminati...

Technological innovation in agriculture has recently been changed to the newest technology, such as innovation in irrigation systems widely used for the dry season. High cost of the tools for developing the system for automatic water level recorded being the main problem in integrating the system in irrigation. Previous research stated that the mai...

This study aimed to develop a prediction model for the nutrient content of N, P, K, Mg, and Ca in oil palm leaves using the Normalized Difference RedEdge (NDRE) vegetation index derived from multispectral camera data. Data acquisition was carried out by an unmanned aerial vehicle (UAV), which was correlated to leaf sample analysis of the 17th frond...

Remote sensing is driving transformation in the palm oil plantation industry with data acquisition and spatial analysis. Rapid identification of nutrients in oil palm plantations using a Remote Sensing approach provides benefits for plantation productivity and operations. The research was carried out at the PT Sampoerna Agro plantation, where 18-mo...

The processing of palm fruit bunches (FFB) into crude palm oil (Crude Palm Oil) has been around for decades, requiring innovations in technology and methods that are based on time efficiency, costs, and environmental friendliness. One of them is the development of processing FFB into Crude Palm Oil (CPO) without boiling. The process stages include...

Oil palm has grown from an area of 300 thousand ha in 1980 to now 16.1 million ha (according to GAPKI) with CPO production of 40 million tons. People’s plantations continue to increase and currently account for 52 percent of the total area of oil palm plantations. In this research, pressing pressure experiments were carried out at 60 bar, 70 bar, a...

A hand-held spectrometer can be used to evaluate oil palm (Elaeis guineensis Jacq.) leaf nutrient contents without being destructive. This study aims to develop regression equations and analyze the performance of the prediction models for Nitrogen, Phosphate, and Potassium leaf nutrient contents. The dependent variable in this study was the result...

The fig tree (Ficus carica L.) has been widely cultivated around the world for its commercial value or as an ornamental plant due to its desirable taste and easiness of cultivation in both tropical and subtropical climates. One of the simple methods is pottery gardeners by planting fig trees in a pot or scrap container. However, regular maintenance...

Handling empty palm oil bunches into compost biomass requires measurement and monitoring technology. This natural process has not run optimally due to the lack of application of technology that is able to collect information on the dynamics of the effect of pH on the rate of decomposition of empty oil palm fruit bunches into compost. Responding to...

This study aims to compare the needs of agricultural machinery in rice farming through direct surveys and integrated Planting calendar information systems. This research was conducted in July-September 2020 in Boalemo Regency. The number of respondents in the study was 54 farmers. Based on the study's results, it is known that agricultural machiner...

The oil palm tree is one of the essential plants with a major contribution to the Indonesian economy but is also vulnerable to pathogen infection, such as Ganoderma. Ganoderma boninense is a group of polyporous fungi which is responsible for Basal Stem Rot disease. The disease is extremely serious and easily spreads, posing a significant threat to...

Farmers in Umbulrejo Village in Gunungkidul Regency, Yogyakarta are facing difficulties pumping water for their agriculture due to low electrical power availability. One alternative is to use solar-powered pumps, but this causes environmental problems and higher production costs. The Faculty of Agricultural Technology INSTIPER Yogyakarta is working...

The area of oil palm plantations in Indonesia increased by 7% from 14 million ha in 2017 to 15 million ha in 2021. The vast land requires the support of effective and efficient management techniques to maintain sustainable productivity. The high-performance computing technologies, Internet of Things (IoT), Big Data, Artificial Intelligence, spatial...

Memasuki Revolusi Industri 4.0, industri perkebunan harus dapat beradaptasi dan memanfaatkan teknologi otomatisasi dan teknologi cyber untuk meningkatkan efisiensi dan produktifitas serta daya saing. Istilah Industri 4.0 pada awalnya bukan secara langsung merujuk ke revolusi industri ke-4, akan tetapi lebih merujuk kepada strategi pengembangan tekn...

Water studies in the scope of agriculture have adopted Internet of Things (IoT) to become a new big data collection methodology. This research aimed to deliver a method in water quality categorization. The research methodology for this study used a combination of water quality parameter measurement with two integrated IoT water sensors (turbidity a...

Massive issues on significant water used by oil palm trees suggest further estimation of water exploited by oil palm trees. This research employed sap flow technique using thermal dissipation probes (TDP), compared to Penman-Monteith equation as the benchmark. Water utilization by plants was studied through evapotranspiration, to investigate their...

There are significant studies that have quantified oil palm water footprint as an indicator of environmental sustainability but an estimation of water footprint under varying soil types furthermore is still limited. The objectives of the study were to estimate whether annual variations of soil type and yields significantly effects for the oil palm...

Indonesia’s crude palm oil (CPO) production from year to year continues to increase, at the end of 2020 it reached 17.35 million tons, up 3.6% from the previous year. Increasing production will result in more CPO stock and require good storage. The storage process that occurs is to maintain the temperature of the CPO so that the quality is not dama...

Indonesia's crude palm oil (CPO) production from year to year continues to increase, at the end of 2020 it reached 17.35 million tons, up 3.6% from the previous year. Increasing production will result in more CPO stock and require good storage. The storage process that occurs is to maintain the temperature of the CPO so that the quality is not dama...

Various types of user interface (UI) design had been utilized in water studies to enrich insights regarding quality of water samples and sources. Integrated IoT water sensors were successfully implemented for water quality parameter measurement, however, the visualization and interactivity are limited. The initial design was only capable in reading...

Water quality data is important for analysis in many domain applications. The research aims to collect water quality data through Internet of Things (IoT) approach that integrates several sensors and a micro-controller. This research is conducted by constructing a research framework that covers conceptual design, component selection, design realiza...

Brown sugar is one of the palm derivative products that have high economic value and has very good prospects for development. Commerce is a trading activity that combines the flow of goods and services from the level of production to consumption. This study aims to determine the share margin received by each channel of the brown sugar commerce at K...

The varying condition of climate, soil properties, crop stage, ground water existing in oil palm cultivation require the specific water balance model to perform the precision crop water use. The purposes for this research were to develop oil palm water balance model for calculating the hydrological parameter of oil palm and analysing oil palm water...

Various issues related to oil palm production, such as biodiversity, drought, water scarcity, and water and soil resource exploitation, have become major challenges for environmental sustainability. The water footprint method indicates that the quantity of water used by plants to produce one biomass product could become a parameter to assess the en...

Various environmental challenges, related to oil palm commodity has became a major environmental challenge to oil palm production. The aim and objective of this study is to analyze the actual water footprint of oil palm based on root water uptake under varying crop age and soil type. The research was conducted in Pundu Village, Central Kalimantan....

The varying condition of climate, soil properties, crop stage, ground water existing in oil palm cultivation require the specific water balance analysis model which can evidence the precision condition of crop water use. Water balance parameter in oil palm could be predicted through unsaturated water flow approach by Richard equation which involve...

The water content distribution in root zone of oil palm crop is substantial for predicted the crop water usage both for productivity and environmental issues. The varying condition of climate, soil properties, crop stage, ground water existing of oil palm cultivation require the specific water balance analysis model which can evidence the precision...

Indonesian oil palm plantations are reaching a total area of about 10.9 million ha in 2014, with production reaching 31.4 million tons. To maintain the productivity and sustainability of oil palm plantations, effective and efficient management are needed. Supported by the rapid developments information and communication technology, UAV (drone), com...

Palm oil mill needs clean water for processing, boiler feed water, operational, and household (domestic). Water is one of support material, and it is very important for the processing of oil palm which is required in large quantities and an average of 1 m3 water / ton FFB. The objective this study to determine the amount use of river water (raw wat...

There is high motivation to develop pitcher irrigation system due to its effectiveness in wetting the root zone. Many experiments have been conducted to study water flow in soils with the application of pitcher irrigation. The objective of this research is to develop models to study solute transport in the soils. Numerical approaches with 2-D finit...

Worm screw press adalah komponen utama mesin ekstraksi minyak kelapa sawit mentah (Crude Palm Oil) yang merupakan " stasiun " utama untuk mengutip minyak pada daging buah kelapa sawit. Pada screw press, ada beberapa hal yang perlu diperhatikan guna menentukan keberhasilan proses ekstraksi, yaitu persentase oil losses dan broken nut. Metode peneliti...

Abstrak Salak pondoh merupakan komoditas unggulan Kabupaten Sleman yang telah secara nyata memberikan kesejahteraan bagi masyarakat dan daerah. Kawasan salak pondoh terus berkembang dari segi jumlah dan mutu, pada saat ini pemasaran salak pondoh kabupaten sleman telah sampai pada perdagangan internasional. Pemetaan kawasan ini bertujuan untuk mempe...

ABSTRAK Data produksi atau perkiraan produksi suatu perkebunan diperlukan sejak mulai evaluasi kesesuaian lahan untuk memperoleh land economic value dari suatu penggunaan lahan tertentu maupun secara periodik dalam taksasi produksi. Pertumbuhan dan produksi tanaman pada suatu periode dengan lingkungan tanah dan iklim tertentu produksi tanaman akan...

p>Crop growth and production on particular land and climate is strongly influenced by the interaction between plants, climate, soil, and management. Land quality and climate greatly affect the expected production of oil palm are: soil type, soil depth, altitude, soil pH, rainfall / year, average temperature, water deficit in mm / yr, air humidity,...

Pitcher, a bottle-like irrigation emitter made of baked clayed soils mixed with sands has been recognized as the oldest traditional irrigation. It has high water efficiency since the water seeps directly to and concentrated in the root zones. We conducted numerical and experimental studies to investigate the water flow in the soil surrounding a pit...

Land evaluation for specific purpose in plantation sector become very important due to increasing the competition in land use and the development of plantation sector. Land evaluation produces information of land economic values for specific land use. The objective of the research is to develop land evaluation method for cocoa estate using integrat...

Pitcher is a bottlelike emitter made of porous baked-clay that is designed to be able to release water through its wall into the surrounding soil. In irrigation practice water level inside the pitcher is maintained by means of a constant water level supplier, or mariotte tube. This research looks at how the pitcher can also release nutrients when f...