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| Filter results10 paper(s) found. |
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1. AgDataBox-Map: Web Application for Spatial Analysis and Delineation of Management Zones for Dynamic Fruit Harvesting in Precision AgricultureHarvest maps are fundamental tools in precision agriculture, as they allow for the evaluation of whether corrective actions taken before and during the harvest have had the planned effect, through visualization of the heterogeneity of production within the cultivated area. However, in fruit growing, due to the extensive use of manual labor for harvesting to the detriment of mechanization, the generation of thematic maps has always been a problem. In Brazil, initiatives developed by the Federa... C.B. De Faria, L. Gebler, L. De Ross Marchioretto, C.L. Bazzi |
2. Enhanced Deep Learning Framework Driven Grape Berry Temperature Estimation and 72-h Forecasting for Precision Heat Stress ManagementThe increasing frequency of extreme summer heat events poses a significant threat to grape production in the Pacific Northwest (PNW), U.S., and globally. Elevated temperatures can induce sunburn, accelerate organic acid degradation, and cause anthocyanin loss, ultimately reducing berry quality. Berry surface temperature (BST), which can exceed ambient air temperature by up to 15 °C, is a primary indicator of heat stress severity. However, BST dynamics are governed by complex, nonlinear th... |
3. Influence of Application Rate and Flight Orientation on Droplet Deposition by Remotely Piloted Aircraft (RPA) in ‘Gala’ Apple OrchardsApple production is a cornerstone of the fruit industry, with the ‘Gala’ variety holding a prominent position due to its commercial value. However, this cultivar is highly susceptible to apple scab (Venturia inaequalis), requiring application technologies of fungicides that ensure canopy protection, especially during flowering. In this sense, precision horticulture has sought alternatives to optimize the application of crop protection products, aiming to ... L. Espindola Müller, T. Buchener, B. Nogueira, R. Silva, S.J. Silveira, C. Bredemeier |
4. Applying Precision Agriculture Principles to Assess Spatial Variability of Soil Fertility Profiles in Coffee Farms at a Regional Scale.In the last two decades, the development and increasing efficiency of Precision and Digital Agriculture technologies has been observed in a broad range of farming systems. One of the consequences of this was the popularization of digital data collection, resulting in the current scenario where agricultural companies usually have large georeferenced databases concerning climate, soil and plant traits. These datasets are also produced by agricultural cooperatives such as the Cooxupé (Reg... H.F. Gebler, B.R. Silva Costa, J.P. Molin |
5. Evaluation of an Ai-Driven High-Precision Spraying System for Targeted Weed Control in OnionsWeeds are a persistent challenge in the Vidalia onion production region, where limited herbicide options make placement and selectivity critical. AI-based high-precision spraying systems may reduce herbicide use and crop injury by targeting only weeds and non-crop areas. This study compared the Ecorobotix ARA high-precision sprayer operating in an all-but-the-crop mode with a conventional broadcast application for weed control, crop phytotoxicity, and onion performance. A field trial was cond... R. Dos Santos, L. Oliveira, L.D. Sales, M. Barbosa, C.T. Tyson |
6. Integrated Evaluation of Precision Spraying Systems in Pecan Orchards: Smart Apply System™, Conventional Airblast, and Drone ApplicationPecan production in Georgia faces increasing challenges related to weather variability, rising labor costs, and higher prices of agricultural inputs, particularly fungicides required for scab (Venturia effusa) management. Conventional air-assisted sprayers operate at fixed application rates and do not account for tree size variability or canopy gaps, often resulting in overapplication and reduced efficiency. Emerging precision technologies, such as Smart Apply™ sprayers and spr... R.P. Oliveira, J.P. Silva, J.V. Martins, R. Dos Santos, M. Barbosa, L. Oliveira |
7. Non-destructive Detection of Herbicide Damage in Curly Lettuce Using Spectral Data and Machine Learning AlgorithmsCurly lettuce (Lactuca sativa var. crispa) is a prominent horticultural crop due to its high demand for both production and human consumption. It plays a vital role in creating healthier, more balanced diets. However, the application of phytosanitary products, such as herbicides, whether applied by air or land, can lead to chemical drift into adjacent areas, negatively impacting sensitive crops. This drift can cause phytotoxicity and, in severe cases, result in total crop loss, depending on f... F. Morlin Carneiro, T. Vidigal Maciel, G. Albuquerque Araujo, H. De Oliveira Cavalheiro, B. Matwijou, M.A. Da Silva, A. Lopes De Brito Filho, M.G. Da Silva Brochado, J.D. Rodrigues Oliveira |
8. Temporal Variations in Leaf Nutrient Concentrations and Photosynthetic Nutrient Use Efficiency in DurianThis study assessed leaf nutrient concentration in durian leaves and evaluated the photosynthetic use efficiency of nitrogen (N), phosphorus (P), and potassium (K) on durian trees over two fruiting seasons. This study also provided nutrient recommendations for durian fertilization using the Diagnosis and Recommendation Integrated System (DRIS) and optimal nutrient management range. A total of 63 mature trees were selected for leaf sampling. All samples were collected at two growth stages in e... M.F. Omar, S.K. Balasundram, N.E. Tajidin |
9. A New Method for Yield Mapping in Commercial Wine Grape Vineyards of CaliforniaVariable rate management (VRM) has been slow to advance in wine grape vineyards, in part due to the lack of commercially available implements or solutions capable of reacting to within vineyard variability. However, the lack of yield maps in vineyards constrain growers’ ability to understand the return on investment, making the cost of VRM difficult to justify. Previous yield monitors mounted on the discharge belts of mechanized grape harvesters were difficult and costly to maintain. A ... B. Sams, M. Aboutalebi |
10. Soil Factors Affecting Severity of Verticillium Wilt in Kiwifruit (Actinidia Deliciosa)Verticillium wilt, caused by the soil-borne fungal pathogens Verticillium albo-atrum and V. dahliae, represents a highly destructive vascular disease in kiwifruit, with pronounced impact on gold kiwi (Actinidia chinensis). The disease manifests as acute wilting, shoot dieback, foliar necrosis, and, in severe cases, complete plant mortality. Conversely, green kiwi (Actinidia deliciosa) exhibits greater resistance to Verticillium wilt; while the disease does not typically cause vine death, it a... H. Poblete, R.A. Ortega, M.M. Martinez, I. Ortega |