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Engenharia Agrícola
Scopus
ISSN 0100-6916 · Sociedade Brasileira de Engenharia Agrícola · 2.151 artikel di indeks
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Artikel Jurnal Teks lengkap
Interactive effects of fertilizer particle-size distribution and spreader settings on application uniformity and particle segregation
Abstract Double-disc centrifugal fertilizer spreaders are widely used because of their high operational capacity and low cost for applying granular fertilizers. However, achieving adequate application uniformity remains a challenge. This study evaluated fertilizer distribution by examining…
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Optimizing the number of subsamples for characterization of soil attributes in management zones
Abstract Soil sampling for fertility mapping remains a challenge in agricultural management, mainly due to high costs. Several techniques have been employed to mitigate this issue, each with its own advantages and limitations. This study proposes an approach based on the delineation of management…
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DESIGN AND OPTIMIZATION OF A LOW-DAMAGE APPLE BIN FILLING DEVICE
Abstract To address the problem of high rates of damage during automated apple harvesting, caused by uneven distribution in the filling of the apple bin, a device was designed with a bin that could rotate and move up and down autonomously. By analyzing the state of motion and the impact forces…
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Open-source system for reservoir water level monitoring using ultrasonic sensing
Abstract Accurate monitoring of reservoir water levels in urban and agricultural environments is essential but is often performed visually, a method that is both time-consuming and labor-intensive. This study describes the development and evaluation of a low-cost water level monitoring system based…
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Study of mechanical damage to tomato seedling stems to ensure the quality of grafting
Abstract Tomato seedling stems can suffer mechanical damage during automatic grafting, reducing the quality of grafting. This study examined two sources of damage: compression damage to scion stems and bending damage to rootstock stems. Two damage tests were conducted. The test factors were…
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Optimisation of the pick-up mechanism of a straw baler using an improved NSGA-II algorithm
Abstract Using an improved NSGA-II (non-dominated sorting genetic algorithm II) algorithm, a multi-objective optimisation approach is developed here for the pickup device of a square baler, in an attempt to significantly increase its work efficiency and to effectively reduce the missed pickup rate…
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Impact of thermal processing on bioactive compound composition and antioxidant activity in bell pepper varieties
Abstract Bell pepper (Capsicum annuum L.) is a widely cultivated vegetable with substantial economic and nutritional relevance worldwide. This crop comprises several cultivars, primarily distinguished by green, yellow, and red coloration, which correspond to different maturity stages and…
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Real-time damage rate detection for fresh tobacco leaves in mechanical harvesting scenarios with improved YOLOv5
Abstract The rate of damage to tobacco leaves during harvesting serves as a critical performance indicator for tobacco leaf harvesters. Real-time monitoring of the damage rate for freshly harvested leaves can provide essential guidance for dynamically adjusting harvester parameters to ensure…
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Do the number of bolls and the height of the first boll insertion influence the productivity of cotton lint?
Abstract Cotton (Gossypium hirsutum L.) is one of the world's most economically important crops, providing a major source of natural textile fiber, vegetable oil, and biofuel. This study aimed to map and evaluate the correlation between cotton lint productivity and the key agronomic traits…
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Effects of symmetrical spiral anti-blocking and row-sorting device parameters on wheat no-tillage sowing quality
Abstract This paper analyzes the effects of the parameters of a symmetrical spiral anti-blocking and row-sorting device (SSARD) on the quality of no-tillage wheat sowing. The discrete element method was used to simulate the operating process of the SSARD in the soil bin. The effects of the outer…
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Design of a portable hand-guided harvester for mature scallions to reduce damage and avoid debris inclusion
Abstract The aim of this study was to address the problems of physical damage and soil contamination associated with the traditional scallion harvesting process by designing a portable hand-guided harvester and evaluating it through field experiments. The drawbacks of the traditional manual…
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Evaluation and improvement of soil driller performance for well cellar type tobacco transplantation using DEM
Abstract The well-cellar style transplanting (WCST) method has been shown to offer benefits in terms of improving the nutrient absorption capacity of tobacco plants, but conventional well-cellar devices tend to compact the soil, restricting the growth of tobacco roots. To address this issue, the…
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A high-speed transplanting machine for plug seedlings with integrated mechanical and pneumatic drive
Abstract The existing plug seedling transplanters that are used for large-scale vegetable cultivation in China are faced with three main issues: the poor reliability of electrical control systems in the harsh conditions in the field, low efficiency of single-row operations, and low success rates…
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Selection of white oat lines based on agronomic ideotype using high-throughput phenotyping
Abstract The need for more efficient and precise genotype selection in plant breeding has increased due to the demand for scalable approaches that reduce time, cost, and labor without compromising accuracy. High-throughput phenotyping using vegetation indices has emerged as a promising alternative…
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Artificial neural network–based assessment and prediction of internal quality parameters of mango fruit cv. Timor
Abstract Most existing techniques for assessing mango quality rely on biochemical analyses that destroy the fruit. This study evaluated and predicted the quality parameters of Timor mangoes using an artificial neural network (ANN) model. Data were collected from nine plantation sites in Gizan…
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Kinematic characteristics of perforation and droplet dynamics in oil-based emulsion pesticide sprays
Abstract Improving the efficiency and precision of pesticide application remains a major challenge in modern agriculture, particularly for oil-based emulsions with complex atomization behaviors. This study investigates the perforation fragmentation phenomenon that occurs in the liquid sheet during…
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Investigation of the geometric configuration of blades for a micro horizontal axis wind turbine for the semi-arid region of Pernambuco
Abstract This study investigates how different chord and twist angle distributions: in ideal, linear, and elliptic forms, influence the performance of a micro horizontal wind turbine designed for low-intensity winds in the semi-arid region of Pernambuco. Using a code based on lifting line theory…
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Occurrence, frequency, and trends of heatwaves and cold spells in Maputo under climate change conditions (1984-2023)
Abstract This study analyzed changes in temperature extremes in Maputo, Mozambique, focusing on heatwave and cold-spell frequency and duration in the context of climate change and their direct impacts on agrometeorology and plant-soil-atmosphere relationships. Using daily maximum and minimum…
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Simulation-based optimization and field validation of a tobacco transplanting earth auger using DEM–MBD coupling
Abstract Efficient and consistent formation of transplanting holes (pits) is essential for the mechanized transplanting of tobacco plants, but the design of earth auger devices has traditionally relied on empirical selection and repeated trials. In this study, a systematic approach based on a…
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Soil loss estimation using RUSLE and GIS in the Córrego Rico watershed
Abstract In recent decades, agricultural practices and urbanization, combined with inadequate conservation measures, have likely intensified soil erosion in the headwaters of the Córrego Rico watershed (HCRW), located in northeastern São Paulo State, Brazil. The HCRW represents an important water…
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