Eco-farming policies and sustainable food security in Qatar: The role of hydroponics

Embracing smart irrigation management techniques empowers growers to irrigate with greater efficiency, thereby promoting sustainable agricultural production. In this context, growers often rely on crop evapotranspiration (ETc) as a key factor in making informed irrigation decisions, underscoring the significance of accurately determining and spatially mapping crop water status. Technological progress, exemplified by the emergence of unmanned aerial vehicles (UAVs), has brought about a revolutionary shift in agricultural monitoring. UAV platforms can capture high-resolution images with centimeter-level spatial accuracy and offer higher temporal coverage compared to satellite imagery. Considering these advancements, this study introduces a robust method for classifying water stress in cotton using a compact UAV platform and convolutional neural networks (CNN). The experiment was conducted at the USDA-ARS Cropping Systems Research Laboratory (CSRL) in Lubbock, Texas, where the cotton field was divided into 12 drip zones. The study included three replications to evaluate four irrigation treatments: “rainfed”, “full irrigation”, “percent deficit of full irrigation”, and “time delay of full irrigation”. The results demonstrated that the CNN model successfully classified the cotton water stress using the UAV-based RGB image, achieving an overall best prediction accuracy of approximately 91%. By segmenting the original cotton images into separate canopy and soil areas using morphological image processing methods, the authors also isolated and analyzed the individual contributions of these components to cotton water stress. Additionally, a random forest classifier revealed the relative importance of different image features in the classification process through feature importance analysis. These findings highlighted the state-of-the-art performance of the proposed system in cotton water stress classification and provided valuable insights into the key image features contributing to accurate classification. The authors concluded that integrating UAV-based RGB imagery and CNN models had great potential for assessing water stress in cotton.

A new approach to measure spatial variability of soil parameters and field technique to test-value specific fertilizer

Information on the distribution of soil properties is important to know the status of nutrients in the soils based on which fertilizer nutrients are recommended. Given the variability of nutrients in the soils, making a site-specific fertilizer recommendation seems to be a compelling work. To determine the spatial variability of soil nutrients and to make judicious and precise fertilizer recommendations, new measures are designed with this study. These measures are tested against the soil samples (n = 43) for total nitrogen (N), organic matter (OM), phosphorus (P2O5), and potassium (K2O) in the study area. The descriptive statistical analysis indicated an average of low nitrogen and organic matter, while phosphorus was found to be very high and the level of potassium was high. The spread of nutrients across the data sets, however, included low, medium, high, and very high levels of ratings. The Deviation Square Index was developed and applied for the variability measurement and found that the largest variation was with phosphorus distribution, followed by potassium, nitrogen, and organic matter. The coefficient of variation (CV%) analysis also exhibited similar trends in nutrient distributions. Nitrogen was the main determinant explaining the variations in rice yield, while phosphorus and potash were negatively related to the yield. An index of fertilizer nutrient recommendation called Test-Value Specific Dose (TVSD) was developed and used to calculate the nutrient recommendation for each sampled location. This new method gave easy and more accurate doses of fertilizer over the blanket recommendation to fit the variations across the soil samples.

Eco-farming policies and sustainable food security in Qatar: The role of hydroponics

Ahmed Badran

Article ID: 3039
Vol 6, Issue 1, 2025

DOI: https://doi.org/10.54517/ama3039

Received: 31 October 2024; Accepted: 24 December 2024; Available online: 9 January 2025; Issue release: 31 March 2025

VIEWS - 833 (Abstract)

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Abstract

This article explores how hydroponics can help the State of Qatar implement sustainable agricultural policy in the face of the nation’s climatic and environmental problems, including a lack of arable land and water. Because it uses nutrient solutions to grow plants without soil, hydroponics is a cutting-edge substitute for conventional agriculture. It reduces water consumption and increases production efficiency. The article discusses how Qatar is adopting hydroponics within the framework of its National Vision 2023, which seeks to achieve food security by promoting innovation and sustainability in the agricultural sector. It also focuses on the environmental and economic benefits of hydroponics, such as reducing dependence on food imports and improving the use of natural resources by analysing available data. The article reviews the challenges of applying hydroponics in the State of Qatar, including the high initial cost and lack of public awareness. The article concludes that the demand for hydroponics in Qatar is rising due to a number of causes. Given Qatar’s harsh climate, hydroponics is a cutting-edge and environmentally friendly farming technique that enables year-round growing. Hydroponics is an effective method for growing crops, including fruits and vegetables, on a small amount of arable land and water.

Keywords

hydroponics; sustainable farming; food security; Qatar; agricultural technology; water consumption; farming policies; environmental innovation

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