
Ahmed Harb RabiaDamanhour University · Faculty of Agriculture
Ahmed Harb Rabia
PhD
About
49
Publications
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Introduction
Dr. Ahmed Harb Rabia is an Assistant Professor of Remote Sensing and GIS at the Faculty of Agriculture, Damanhour University, Egypt, where he has been since 2013. Also, from 2016 until the present, he is the Director of the SPACE center at the Faculty of Agriculture, Damanhour University. He has a Ph.D. in Remote Sensing and GIS from the University of Naples "Federico II", Italy. Also, He holds a master’s degree in Soil and Water Science from Alexandria University (2007) and a Bachelor of Science from the Faculty of Agriculture, Alexandria University (2001).
Currently, he is a visiting scientist at the University of Georgia (UGA) in the USA. His fields of interest include precision Agriculture, soil science, GIS and remote sensing, Machine Learning, Deep Learning, Climate change.
Additional affiliations
January 2020 - present
November 2018 - January 2019
September 2014 - present
Publications
Publications (49)
Land evaluation is a necessary tool in reclamation and cultivation of new lands. North-western coast represents one of the promising locations for sustainable agricultural development in Egypt. Therefore, the main objective of this work was to evaluate lands for agricultural purposes in the study area using the agriculture land evaluation system fo...
Nutrient management requires traditional soil and plant analysis, which is time-consuming, costly, and requires effort. Therefore, a lot of efforts have been directed toward developing novel approaches for estimating plants' status. Our objective was to evaluate the potential of thermal and RGB imaging to estimate Chlorophyll levels and some essent...
Spatially explicit information on forest management at a global scale is critical for understanding the status of forests, for planning sustainable forest management and restoration, and conservation activities. Here, we produce the first reference data set and a prototype of a globally consistent forest management map with high spatial detail on t...
During December 2020, a crowdsourcing campaign to understand what has been driving tropical forest loss during the past decade was undertaken. For 2 weeks, 58 participants from several countries reviewed almost 115 K unique locations in the tropics, identifying drivers of forest loss (derived from the Global Forest Watch map) between 2008 and 2019....
Several global high-resolution built-up surface products have emerged over the last five years, taking full advantage of open sources of satellite data such as Landsat and Sentinel. However, these data sets require validation that is independent of the producers of these products. To fill this gap, we designed a validation sample set of 50 K locati...
Topographic variability is one of the main factors that affect soil properties and crop production. In this work, we reviewed the concept and significance of various topographic attributes and their influence on the factors contributing to crop growth and yield, including soil physical, hydraulic, chemical, and biological properties and nutrient di...
Geographic object-based image analysis (GEOBIA) is a remote sensing technique that characterize image pixels into objects based on spectral, temporal, and spatial characteristics. It is a useful technique for land use classification and change detection. In this study, a land use and land cover classification and change detection was caried out at...
Egypt is one of the top 20 producers of potato worldwide and the first largest producer and exporter of potatoes in Africa in 2019. The aim of this study was to evaluate the adaptation strategies that have been developed by potato farmers in Egypt to cope with climate change impacts. This was achieved by a) Identifying influences of local climate c...
This paper presents the Blueberry App that was developed to improve irrigation water use efficiency. It uses meteorological data, reference evapotranspiration (ETo), crop coefficient (Kc) to estimate crop evapotranspiration (ETc). Users can insert information such as field location, soil type, planting date and irrigation system properties once dur...
Accurate and rapid estimation of stand count is crucial to determine plant emergence rates for site-specific management, such as decision support for replanting. This study assessed the application of high-resolution unmanned aerial system (UAS) imagery in quantifying early-season cotton stand count. A UAV system equipped with an RGB camera was use...
Stand count is critical for growers to make decisions for replanting and other site-specific management to avoid yield loss. This study applied and compared two object detection models, MobileNets and CenterNet, in cotton stand count using unmanned aerial system (UAS) images. The results showed that the overall mean precision and recall for the Cen...
Theoretically, the soil is a renewable resource. However, as a coarse estimate, ten centimeters of fertile soil are created in 2000 years. This means that soils we deplete by human activities are gone forever relative to the human lifespan. Thus, one can conclude that soil is not a renewable resource. It is manifested today that soil is as importan...
Irrigation scheduling is one of the main factors that affect the crop ability to resist stress symptoms in addition to affecting directly the final yield. In the last decade, many remote sensing methods have been developed to help in scheduling irrigation with higher precision. Some of these methods estimate irrigation needs indirectly such as thos...
Crop monitoring during the growing season became an essential technique of precision agriculture. With the advancement of unmanned airborne vehicles (UAV) applications in agriculture, using UAV imagery in crop monitoring grow into a well-established procedure. This is due to the very high spatial resolution, speed results delivery and the Flexibili...
Irrigation scheduling is one of the main factors that affect the crop ability to resist stress symptoms in addition to affecting directly the final yield. In the last decade, many remote sensing methods have been developed to help in scheduling irrigation with higher precision. Some of these methods estimate irrigation needs indirectly such as thos...
Nile delta of Egypt is one of the most vulnerable areas subjected to climate change impacts. A large portion of our agricultural cultivation is mainly accumulated in the Nile delta. As a result the agricultural cultivation is facing several challenges due to climate change impacts especially extreme climatic events. This leads to a significant drop...
Within the last few years many studies arouse the issue of scientific ethics violation and misbehavior of responsible conduct of science (RCS) among researchers worldwide. In Egypt, both the academic and research communities suffer as well from RCS problems. Lack of awareness about RCS and wrong practices are one of the major challenges facing the...
Soil contamination by heavy metals is one of the most serious environmental threats. This is due to the high toxicity of heavy metals and the accumulation of these metals in soil and then transfer from soil to plants, organisms, and groundwater. The main source of soil contamination by heavy metals comes from the addition of mineral fertilizers, mi...
Barley (Hordeum vulgare L.) is recognized as one of the very first crops to be domesticated for human consumption. It remains one of the major cereal crops grown in the world: barley is grown on every continent on which crops are grown. Relative to other cereal crops, barley ranks fourth in total grain production. The grain of barley enters the hum...
Barley (Hordeum vulgare L.) is recognized as one of the very first crops to be domesticated for human consumption. It remains one of the major cereal crops grown in the world: barley is grown on every continent on which crops are grown. Relative to other cereal crops, barley ranks fourth in total grain production. The grain of barley enters the hum...
Potato is the most important export vegetable crop in Egypt and the second most important vegetable crop after tomato in economic value. Egypt is one of the top 20 producers of potato worldwide and the second largest producer and exporter of potatoes in Africa after Algeria. About 20% of total area devoted for vegetable production is cultivated wit...
The agriculture sector in Egypt is one of the most important sectors, accounting for almost 15% of the national income, a value of 282 Billion EGP/Year. The sector employs more than 8.5 million person, which represent 32% of the total working labor in the country. Egypt is one of the top 20 producers of potato worldwide and the second largest produ...
The potato was introduced in Egypt during the 1800s, and large scale cultivation began during the First World War period. Egypt’s irrigated potato production is concentrated in the Nile River delta in the northern part and has expanded at a rate of more than 5 percent a year. Between 1990 and 2007, annual output rose from 1.6 million tons to some 2...
Salinization is one of the major soil threats all around the globe. It affects the soil suitability for agriculture production and the quality and quantity of the final yields. Among many factors, salinization is connected to irrigation system type and irrigation water quality. Due to the global water scarcity problem, modernization of irrigation s...
Land capability assessment is a coherent and orderly method of determining the ability of land to sustain a specific use and level of management, without causing significant long-term degradation. In this work, land capability classification method has been used in Kilte Awulaelo – Ethiopia to estimate different land capability classes. Different p...
Zinc is an essential nutrient element for plants and animals. It is involved in several biochemical reactions in plant and its deficiency causes low crop yield. Zinc deficiency is common in soils of Egypt, in general, and its correction is costly because of the wide area of cultivated lands suffering of Zn deficiency. It has been reported that plan...
Scientific misconduct is the violation of the standard codes of scholarly conduct and ethical behavior in professional scientific research. Scientific misconduct includes plagiarism of data of information, fabrication and falsification of data or results and misbehavior in authorship agreements. In this study a series of workshops were organized in...
Since the first emergence of life forms on earth, differences between species has always been linked to the geographical distribution and environmental variation. Whereas, some species have developed in certain regions and did not appear in others as a result of many factors related to the geographical locations and environmental conditions of thes...
Land cover is of fundamental importance to many environmental applications and serves as critical baseline information for many large scale models e.g. in developing future scenarios of land use and climate change. Although there is an ongoing movement towards the development of higher resolution global land cover maps, medium resolution land cover...
Soil map is one of the basic tools for planning any agricultural
development. Soil maps are even more effective and productive for natural
resources evaluation. Moreover, remote sensing and geographical information
systems (GIS) have added different concepts and enforcements to soil
classification. This study aimed to produce soil maps following di...
Aerial photography is an important source of high resolution remotely sensed data. Before 1970, aerial photographs were the only remote sensing data source for land use and land cover classification. Using these old aerial photographs improve the final output of land use and land cover change detection. However, classic techniques of aerial photogr...
In an ecosystem, there is need to establish the quantity and quality of resources and their suitability for a certain range of land uses in order to assure its future productivity and sustainability of biodiversity. Parametric methods are widely used for land suitability evaluation. A new parametric concept “equation” of land suitability evaluation...
Land suitability assessment for irrigation is a very important tool not only in terms of agriculture development planning, but also to overcome the global problem of water scarcity. The aim of this study is to spatially evaluate land suitability of the study area, Kilte Awulaelo district in Ethiopia, for surface and drip irrigation methods based on...
Recent estimates of additional land available for bioenergy production range from 320 to 1411 million ha. These estimates were generated from four scenarios regarding the types of land suitable for bioenergy production using coarse-resolution inputs of soil productivity, slope, climate, and land cover. In this paper, these maps of land availability...
Egypt has the lowest area of agricultural land per individual in Africa. The agricultural land stands for a total of approximately 3.5 million ha which characterized about 3.5% of the total area of Egypt in 2007. The urban encroachment over arable productive agricultural land in Egypt is common and is called (urban desertification). Therefore, the...
The process of fertilization is of the most important processes in various plant cultivation stages, and which supplies the plant with the necessary nutritional needs for during the growth period. To maximize the benefits of the fertilization addition we must be fully aware of the factors that interfere and affect the soluble fertilizer in the soil...
Of the most important problems that face humans in the current era, is the access to clean, healthy and safe food. This is a result of the widespread use of fertilizers and pesticides in agriculture and which led to the contamination of the soil and made it pathological environment. For this reason scientists were always looking for better methods...
Soil erosion is one of the major causes of land degradation in arid and semi-arid areas like Ethiopia, including Tigray Highlands, which is highly affected by the risk of desertification. Tackling on-site effects of soil erosion requires understanding of the rates of soil loss as well as identification of the major controlling factors that accelera...
Land Suitability refers to the ability of a portion of land to tolerate the production of crops in a sustainable way. Such kind of analysis allows identifying the main limiting factors for the agricultural production and enables decision makers to develop crop managements able to increase the land productivity. Objectives of this study were to deve...
SSoil sealing is the covering of the soil surface with materials like concrete and stone, as a result of new buildings, roads, parking places but also other public and private space. Soil sealing by urban sprawl continues to increase all over the world where the area of urbanized land is increasing even more rapidly than the population. The degree...
Land degradation can be described as reduction in the present and prospective land quality and production, due to natural or anthropogenic dynamics. This phenomenon is one of the most important problems facing farmers and decision makers in several countries. This study aims to use GIS spatial modeling to quantify land (physically and chemically) d...
Zinc is an essential nutrient element for plants, animals and Humans. It is involved in several biochemical reactions in plant and its deficiency causes low crop yields. Zinc deficiency is common in many soil types, in general, and its correction is costly because of the wide area of cultivated lands suffering of Zn deficiency. Different plant spec...
Questions
Questions (7)
Dear colleagues,
I have "leaf Area" measurements using the "LI-3100 Area meter" of cotton plants from different stages on June, July, August and September. The planting distance is 15 cm between plants and 1 meter between rows.
Now, to calculate the LAI I should divide the "leaf Area" measurements / Ground area.
My question is: Should I use a fixed "Ground area" value for all the stages (e.g. 15x15 cm per plant) ?
Or, should the "Ground area" value increase with each stage? and in this case what would be the increase amount?
Thanks in advance for your comments
I am working on a new project to forecast daily Actual Evapotranspiration. I need your expert help to choose the best model to use it in my study in Georgia state, a "humid subtropical" study area in southern eastern of USA.
I found many models but you can suggest other models if you believe will work better.
The models I found are: SEBAL, METRIC, TSEB, SEBS, SSEBop, S-SEBI, 3T, ALEXI
Thank you for your replies .
I am looking for a Post-Doctor position in Europe, USA or Canada for two years or more. Please if you have any suggestions or you have a position to offer you may contact me by e-mail : ahmedrabia@agr.dmu.edu.eg
My research interests are: Rs & GIS, Precision farming (PF), Volunteered Geographic Information (VGI), Soil science, Climate change impacts on agriculture.
Thank you in advance for your help
I am doing a suitability analysis for wheat production and I need to assign the weights for the analysis factors. I need experts decision about the importance of the factors affecting wheat growth. Can you help order the factors from the most important to the least important?
For example, if you think that pH is more important than EC for wheat and more affecting the wheat growth you write in your answer like this pH > EC.
The factors or the parameters are 9:
pH, EC, Slope, coarse Fragments, depth, Organic matter, CaCO3, CEC, texture
Please order using “>” simple.
Does anyone know a solid methodology to produce a wheat productivity index based on minimum soil data set?
I need to evaluate soil suitability for wheat production and directly evaluate the soil productivity of wheat based on soil characteristics.
Does anyone have suggestions?
I need to create a soil quality map for the study area I am working on and I wonder what is the best methodology to do it ? I have a good soil data base and thematic maps.
I need to do a soil functions evaluation test but i am unable to find literature regarding this. Can anyone recommend a detailed reference about the equations or the methodology of the test?
I need to measure or calculate these soil functions
1 - Food and other biomass production
2- Environmental Interaction: storage, filtering, and transformation
3- Biological habitat and gene pool
4- Function as a carbon pool.
Anyone has an idea ??