Harvesting Strategies Research Articles

Two-stage carbon sequestration by Haematococcus pluvialis: Integrated research from small-scale to pilot-scale cultivation and data quality monitoring.

A novel two-stage carbon sequestration strategy (3 % and 10 % CO2) was developed and its feasibility was comprehensively demonstrated by multiple methods (pilot-scale cultivation, kinetics, economics and carbon fixation analysis). It was also a safe, efficient and low-cost harvesting strategy. At the end of the culture, astaxanthin production and content increased 2.3 and 2.2 times, respectively. Sedimentation rate (SR) was introduced for the first time to evaluate microalgae culture methods. The SR reached 82.2 % after 2 h of standing. Pilot-scale cultivation was achieved outdoors, with the optimal photobioreactor being a 40 L tubular photobioreactor (T-PBRs), which individually achieved 3.1 g/L and 2.3 % biomass and astaxanthin content. The maximum rate of carbon sequestration (227.9 mg/L/d) was observed in 40 L T-PBRs. The cost of producing 1 kg of astaxanthin-enriched Haematococcus pluvialis (H. pluvialis) was only 17.5 USD. This study brings new perspectives to carbon sequestration and the development of astaxanthin markets.

Optimizing potassium applications and harvest strategies to boost productivity of depleting alfalfa stands

AbstractRejuvenating thinning alfalfa (Medicago sativa L.) stands with additional forage species have been ineffective in boosting productivity. Research is needed to identify practical solutions to extend the life of declining alfalfa and increase forage production. A 2‐year field study at the University of Wyoming James C. Hageman Sustainable Agriculture Research and Extension Center in Lingle, WY, investigated the interaction effect of K and harvest time on thin alfalfa stands. Treatments were (a) six K rates (0, 56, 112, 168, 224, and 280 kg K2O ha−1 year−1) applied to a ∼10‐year‐old alfalfa in the fall of 2019 and after the final harvest in the fall of 2020, and (b) two harvest times (early harvest, late bud to early [10%] bloom; late harvest, 7–10 days after early harvest), arranged in a 6 × 2 factorial under random complete blocks with four replications. Results showed a higher yield response to K at 224 kg K2O ha−1 year−1 and early harvest, and at 168 kg K2O ha−1 year−1 and late harvest particularly in soils with high soil test K levels (>300 mg kg−1). Harvest timing influenced alfalfa's K needs, with quadratic responses of forage accumulation to K rate observed at early (p < 0.001, R2 = 0.96) and late (p < 0.001, R2 = 0.84) harvests. The 168 kg K2O ha−1 year−1 increased stem density, increasing forage accumulation and profitability under both harvest systems. Stem density significantly impacts weed competition and stand productivity, with stem counts above 590 m−2 maintaining optimal yields. Alfalfa producers worldwide, particularly in Wyoming and similar environments, can rejuvenate depleting stands by applying moderate K rates (∼168 kg K2O ha−1 year−1) and adopting early or late harvest strategies when stem densities fall below ∼430 m−2. However, when stem counts remain above this threshold and weeds are well managed, continued harvesting may be an efficient strategy.

A dual bivalve approach for interpreting past sea surface temperatures and seasonality from shell midden sites using oxygen isotope sclerochronology

Stable oxygen isotope (δ18O) analysis of archaeological shellfish remains combined with sclerochronology can be used to precisely reconstruct past sea surface temperature (pSST), season(s) of shellfish collection, and thus the season(s) of archaeological site occupation. Our study tests if δ18Oshell and sclerochronological analyses of marine bivalve species Leukoma staminea – with previously unassessed seasonality and pSST potential – can provide additional insights not captured by the better studied species, Saxidmous gigantea in British Columbia (BC, Canada). We analyzed live-collected L. staminea and S. gigantea shells from Sechelt, BC, and compared results to archaeological shell data from Powell River, BC, in the territory of the Tla'amin First Nation (1065 to 797 cal. B.P.). The seasonality of shellfish harvest differed between species, with S. gigantea preferentially collected in the spring, whereas L. staminea collected year-round. This highlights that sole-species seasonality studies may miss important variability harvesting strategies. Additionally, comparisons between instrumental (5.7 to 20.4 °C) and reconstructed SST from modern L. staminea δ18Oshell (5.6 to 18.4 °C) showed good agreement in annual range. Our results indicate that archaeological S. gigantea record a wider range of pSST (−1.6 to 22.9 °C) than archaeological L. staminea (5.8 to 25.9 °C), suggesting that S. gigantea may be a more sensitive palaeotemperature recorder. Further, we found that using the same reconstructed δ18Owater value for both species in pSST reconstruction caused an overestimation of temperature. Accordingly, we argue that it is critical to calibrate the equation with corresponding species-specific δ18Oshell values, regardless of both having aragonite mineral structures. Our study highlights the potential of L. staminea to broaden seasonality interpretations while clarifying that its use for pSST reconstruction may not capture the lower range of temperature.

A composite structure device: vibration control and energy harvesting of tool system in aviation thin-walled parts milling process

Abstract The intense vibration generated by the high-speed milling cutter in the processing process not only seriously affects the surface roughness but also may damage important components of the machine tool, resulting in significant economic losses. Therefore, a composite structure of piezoelectric energy-collector (PEC) and nonlinear energy sink (NES) is innovatively constructed by combining theoretical research and numerical analysis to achieve more efficient vibration suppression and energy recovery in milling. Using the Hamilton principle, the electromechanical model of the composite structure is developed. Then, based on the Galerkin truncation to discretized displacement functions, we solve the amplitude-frequency response of the tool structure by using the harmonic balance method. The validity analysis of the proposed method can be verified by rigorous comparison with the results of the Runge-Kutta method. A novel NES-PEC composite structure presented in this work shows excellent vibration suppression capability in the milling process. More importantly, the structure also enables self-powered sensing of the tool system, significantly reducing dependence on external power sources. This innovative design substantially improves the stability and reliability of milling processes and opens up new ways to optimize the energy efficiency of tool systems. In summary, this paper’s modeling and solving methods, vibration reduction techniques, and energy harvesting strategies have laid a solid foundation for applying a high-speed milling cutter system. More relevant literature on applying vibration suppression and energy harvesting devices in milling must be reviewed. This paper fills in the research gap and provides a valuable reference for future tool systems design and optimization.

Optimization of the marine microalgae Nannochloropsis oculata harvesting by flocculation: Effects on biomass quality and residual medium reuse for a new cycle

ABSTRACT Flocculation using natural plant-based biopolymers from Moringa oleifera seeds and Acacia mearnsii flocculant as Tanfloc® (TSG) has emerged as an efficient strategy for microalgae biomass harvesting. This study optimized the recovery process of Nannochloropsis oculata by varying flocculant concentration, sedimentation time, and culture pH. Results revealed that 1.2 mg.L−1 of TSG at pH 8.9 achieved optimal conditions, although TSG proved effective across different pH ranges. Alkaline flocculation (ALK) also enhanced microalgae harvesting, yielding a high harvesting efficiency (>96%) within 30 minutes of sedimentation. Both methods achieved a concentration factor exceeding 20. However, the use of ALK resulted in reduced lipid and carbohydrate content compared to the control condition. Carotenoid levels showed no significant difference. TSG influenced lipid extraction but not fatty acid quality or carbohydrate extraction. Importantly, the residual medium from TSG flocculation could sustain subsequent cultivation cycles without nutrient supplementation, presenting a cost-effective solution for microalgae cultivation and harvesting.

Urban Water System of the National Capital Territory (NCT) of Delhi: A Comprehensive Study

ABSTRACT This study examines the intricate relationship between Delhi's urban water system and environmental factors, with a specific emphasis on the challenges posed by urbanization. The study investigates the present conditions of the water resources, infrastructure, and governance in the National Capital Territory (NCT) of Delhi and identifies significant difficulties, such as depletion of groundwater and inadequate access to water. Additionally, it examines innovative approaches to enhancing supply internalization, such as rainfall harvesting, wastewater recycling, and demand management strategies. Therefore, this document establishes a path for future research endeavors and policy suggestions that aim to promote a fair, effective, and environmentally sustainable future for water in Delhi.

Fruit Distribution Density Estimation in YOLO-Detected Strawberry Images: A Kernel Density and Nearest Neighbor Analysis Approach

Precise information on strawberry fruit distribution is of significant importance for optimizing planting density and formulating harvesting strategies. This study applied a combined analysis of kernel density estimation and nearest neighbor techniques to estimate fruit distribution density from YOLOdetected strawberry images. Initially, an improved yolov8n strawberry object detection model was employed to obtain the coordinates of the fruit centers in the images. The results indicated that the improved model achieved an accuracy of 94.7% with an mAP@0.5~0.95 of 87.3%. The relative error between the predicted and annotated coordinates ranged from 0.002 to 0.02, demonstrating high consistency between the model predictions and the annotated results. Subsequently, based on the strawberry center coordinates, the kernel density estimation algorithm was used to estimate the distribution density in the strawberry images. The results showed that with a bandwidth of 200, the kernel density estimation accurately reflected the actual strawberry density distribution, ensuring that all center points in high-density regions were consistently identified and delineated. Finally, to refine the strawberry distribution information, a comprehensive method based on nearest neighbor analysis was adopted, achieving target area segmentation and regional density estimation in the strawberry images. Experimental results demonstrated that when the distance threshold ϵ was set to 600 pixels, the correct grouping rate exceeded 94%, and the regional density estimation results indicated a significant positive correlation between the number of fruits and regional density. This study provides scientific evidence for optimizing strawberry planting density and formulating harvesting sequences, contributing to improved yield, harvesting efficiency, and reduced fruit damage. In future research, this study will further explore dynamic models that link fruit distribution density, planting density, and fruit growth status.

Assessing the Impacts of Forest Taxation Programs on Optimal Management of Douglas Fir under Adaptive Harvest Strategies in Western Oregon

Assessing the Impacts of Forest Taxation Programs on Optimal Management of Douglas Fir under Adaptive Harvest Strategies in Western Oregon

Constructing High-Performance and Versatile Liquid-Solid Triboelectric Nanogenerator with Inflatable Columnar Units

Abstract The use of water resources for energy generation has become increasingly prevalent, encompassing the conversion of kinetic energy from streams, tides, and waves into renewable electrical power. Water energy sources offer numerous benefits, including widespread availability, stability, and the absence of carbon dioxide and other greenhouse gas emissions, making them a clean and environmentally friendly form of energy. In this work, we develop a droplet-based liquid-solid triboelectric nanogenerator (LS-TENG) using sophisticatedly designed inflatable columnar structures with inner and outer dual-electrode. This device can be utilized to harvest both the internal droplet-rolling mechanical energy and the external droplet-falling mechanical energy, capable of assembling into various structures for versatile applications. The design incorporates a combined structure of both internal and external TENG to optimize output performance via multiple energy harvesting strategies. The internal structure features a dual-electrode columnar-shaped LS-TENG, designed to harvest fluid kinetic energy from water droplet flowing. By leveraging the back-and-forth motion of a small amount of water within the air column, mechanical energy can be collected, achieving a maximum mass power density of 9.02 W/Kg and an energy conversion efficiency of 10.358%. The external component is a droplet-based LS-TENG, which utilizes a double-layer capacitor switch effect elucidated with an equivalent circuit model. Remarkably, without the need for pre-charging, a single droplet can generate over 140 V of high voltage, achieving a maximum power density of 7.35 W·m² and an energy conversion efficiency of 22.058%. The combined LS-TENG with sophisticated inflatable columnar structure can simultaneously collect multiple types of energy in high efficacy, exhibiting great significance in potential applications such as TENG aeration rings, inflatable lifejacket, wind energy harvesting, gas-column TENG tents, and green houses.

Hydroelectric energy conversion of waste flows through hydroelectronic drag

Hydraulic energy is a key component of the global energy mix, yet there exists no practical way of harvesting it at small scales, from flows with low Reynolds number. This has triggered a search for alternative hydroelectric conversion methodologies, leading to unconventional proposals based on droplet triboelectricity, water evaporation, osmotic energy, or flow-induced ionic Coulomb drag. Yet, these approaches systematically rely on ions as intermediate charge carriers, limiting the achievable power density. Here, we predict that the kinetic energy of small-scale "waste" flows can be directly and efficiently converted into electricity thanks to the hydroelectronic drag effect, by which an ion-free liquid induces an electronic current in the solid wall along which it flows. This effect originates in the fluctuation-induced coupling between fluid motion and electron transport. We develop a nonequilibrium thermodynamic formalism to assess the efficiency of such hydroelectric energy conversion, dubbed hydronic energy. We find that hydronic energy conversion is analogous to thermoelectricity, with the efficiency being controlled by a dimensionless figure of merit. However, in contrast to its thermoelectric analogue, this figure of merit combines independently tunable parameters of the solid and the liquid, and can thus significantly exceed unity. Our findings suggest strategies for blue energy harvesting without electrochemistry, and for waste flow mitigation in membrane-based filtration processes.

Horns, hunters, and harvest: re‐examining management paradigms for pronghorn

AbstractThe sustainable use of wildlife is foundational to the success of the North American model of wildlife conservation. Harvest management often is shaped through both species biology and public desires. The long timespan it takes males of most ungulate species to reach peak weapon size has created a situation in harvest management in which harvest strategies cannot prioritize both generous hunter opportunity and opportunities to pursue large‐weaponed males; therefore, current harvest paradigms prioritize one at the expense of the other. In contrast to other species, pronghorn (Antilocapra americana) attain the majority of their peak horn size early in life. The rapid development of horns relative to their age may allow for liberal harvest without sacrificing the opportunity for hunters to harvest males with large horns. We evaluated the influence of sex ratios and average age of harvested males on the average horn size of harvested male pronghorn from 2019 to 2022 in 9 hunt areas in Wyoming, USA. Although mean age of harvested males was negatively affected by rate of harvest, increases in mean age at harvest led to only slight increases in mean horn size (i.e., a 1‐year increase in mean age increased mean horn size by 2.1 cm [~1 inch]). The proportion of the harvest composed of large‐horned males was not influenced by mean age of harvest or sex ratio of the population. Based on simulated populations, increasing harvest led to an increase in the number of large‐weaponed pronghorn in the harvest—a relationship that existed for bighorn sheep (Ovis canadensis) and elk (Cervus canadensis) but only at low to moderate rates of harvest. The comparatively young age that pronghorn attain near‐peak horn size alleviates what is otherwise a tradeoff between hunter opportunity and managing for large horn size that is evident in management of other ungulate species. Though rarely a reality in management for large ungulates, for pronghorn, liberal harvest may be possible while still providing opportunity to harvest males with large horns.

All-day freshwater harvesting enabled by designing benzoxazine molecule with intrinsic photothermal conversion and radiation cooling ability

The importance of clean water resources for human health and economic development cannot be overlooked. Providing a way for fully passive all-day freshwater harvesting presents a significant challenge. Herein, we propose a strategy for all-day freshwater harvesting passively through a freestanding Janus film which combining solar-driven interfacial desalination during day time and dew water generation driven by passive radiative cooling at night. Specifically, the core of the strategy was a new bio-based benzoxazine which containing high-infrared emittance in the atmospheric window and the resultant cured black freestanding film owns a steady high light absorbance in the whole range of the solar irradiation wavelength. The home-made device made by the Janus film achieved a drinkable freshwater collection efficiency of 90.9 % when desalinating seawater under 1 sun illumination and achieved a dew water collection rate of 68.36 g m−2 day−1 at night. Moreover, the film has an excellent antibacterial effect, which ensures the quality of water collection and enhances the service life. Combining the advantages of bio-based raw materials, a simple fabrication process and scalability of the film, the all-day freshwater collection system makes a promising solution to alleviate freshwater shortage in many arid regions, islands and even boats sailing on the sea.

Regional demography of Icelandic rock ptarmigan and its implications for harvest management

Abstract The rock ptarmigan (Lagopus muta) is a popular game bird in Iceland, but management of hunting has tended to be controversial. We were interested in whether regional differences in ptarmigan demography exist, and if so, their implications for harvest management. We fit integrated population models (IPMs) to monitoring data from six hunting regions of Iceland during 2005–2023, and then examined equilibrium and non‐equilibrium harvest strategies based on an objective to maximize sustainable harvest. Survival and reproductive rates tended to be similar amongst regions, except in the demographically important Northeast, where survival was lower and productivity was higher. There was a negative relationship between post‐breeding age ratio (juveniles/adults) and spring abundance in all regions, although the strength of density dependence varied. Spring abundance was temporally stable in all regions, although harvest rates tended to decline, and adult survival rates tended to increase. Evidence for cyclical patterns in abundance was weak except in the Northeast, but this may be an artifact of the relatively short time series. Sustainable harvest potential varied amongst regions and was greatest in the East and Northeast. It appears that harvests during 2005–2022 were somewhat less than the sustainable maximum. Non‐equilibrium harvest strategies, in which the allowable harvests depend on spring population size and anticipated productivity, are so‐called ‘bang‐bang’ strategies, meaning that no or very little harvest is optimal until the population is at or above its maximum level of net production. Practical implications. Regional differences in ptarmigan demography warrant different harvest strategies. Yet, the hunting season in Iceland historically has been regulated on a country‐wide basis, with population abundance and dynamics in the Northeast playing a key role. To implement regional harvest management, decision makers must first agree on harvest management objectives that satisfy most stakeholders, who tend to hold very diverse values. Moreover, the historical relationship between season length and harvest rate is tenuous, yet season length is the primary mechanism traditionally used in Iceland to control harvest. The uncertainty in this relationship could be addressed in an adaptive‐management framework.

Factors Affecting the Quality of Ethiopian Coffee (Coffea Arabica L.)

Ethiopia is fortunate in this regard, as it is home to many different types of. Arabica coffee (Coffea arabica L.) is the main coffee variety in global coffee production, accounting for more than 60% of total production. Arabica coffee accounts for 30% of Ethiopia's foreign exchange earnings. Arabica coffee is a popular coffee variety in coffee producing and consuming countries due to its unique aroma and taste and lack of caffeine. Ethiopia's most important export is coffee, which is also its most important crop. Ethiopia is well known for producing very high-quality coffee, renowned for its excellent aroma and taste, and is also the birthplace of Arabica coffee. The coffee industry attaches great importance to coffee quality. Cup quality is a complex trait that depends on many factors, including species or variety (genetic factors), environmental conditions (ecological factors), agronomic practices (cultivation factors), processing systems (post-harvest factors), storage conditions, and industrial factors. process, beverage preparation and consumer preferences. However, the quality of coffee produced by Ethiopian farmers sometimes deteriorates. Additionally, local genotype, climate and soil characteristics, agricultural practices, harvesting strategy and timing, post-harvest handling procedures, grading, packaging, storage and transportation conditions all affect coffee quality, either improving or decreasing coffee quality.

Uranium electrolytic deposition with regenerable Se2− active sites at low cell voltage

The electrochemical extraction of uranium from wastewater represents an effective strategy for the sustainable supply of fuel and the protection of the environmental. However, the rational design of high-efficiency electrocatalysts remains a significant challenge, largely due to the lack of research on the structure–activity relationship. In this study, we developed a novel electrocatalysis based method for the extraction of uranium in solution, combining the redox of selenium (Se2-/Se4+) and uranium extraction. This method enables the high-efficiency extraction uranium in solution, even at relatively low cell voltages of 1 V. The Co3Se4-based electrocatalyst exhibits excellent UO22+ capture properties, endowing it with an electrolytic deposition capacity of 2264 mg g−1 at the concentration of 560 mg L−1 within 48 h. Even in a low concentration uranium solution (5 mg L−1), the extraction capacity can still reach 199.2 mg g−1. X-ray powder diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) revealed that the main active sites of Co3Se4 were renewable Se2- sites. The absorbed UO22+ can be spontaneously reduced to the unstable U(V) intermediate by reversible electron transfer, and then re-oxidized to (UO2)O2·2H2O in the presence of hydrogen peroxide (H2O2). The significant discovery provides a novel electrochemical medium, elucidates the mechanism of the uranium extraction process, and introduces a novel strategy for harvesting U from wastewater.

Nonlinear vibration of a loaded string in energy harvesting

Abstract Designing wideband energy harvesters using beam structures typically involves complexities, particularly in low-frequency and low-energy environments where the limitations of beam structures become more evident. To address these challenges, this study proposed a strategy for energy harvesting using a loaded-string system and established a theoretical model to investigate its performance. A parametric study was conducted for the string system, examining the effects of initial tension, mass location, material stiffness and excitation amplitude. The accuracy of the proposed model was verified through experimental validation. Both theoretical and experimental analyses observed a frequency shifting phenomenon, demonstrating the wideband characteristics of the system. Furthermore, the proposed string structure allows for convenient parameter adjustments, enabling the tuning of its natural frequency and operating bandwidth to meet more stringent practical requirements. The string system provides a new direction for designing energy harvesters to harness low-frequency energy from the ambient environment.

Eco‐friendly Visible Wavelength Photodetectors Based on Colloidal Molybdenum Trioxide Nanobelt Arrays

AbstractIn an era marked by a growing emphasis on sustainability and innovation, the quest for eco‐friendly solutions to energy conversion devices capable of harnessing visible light has gained paramount importance. In response to this critical demand, we demonstrate visible light‐responsive photoswitching from molybdenum trioxide nanobelt arrays in the photoconductive device fabricated using solution‐processing technique. We exploit the visible light‐driven modulation of conductivity in the reversibly switchable photochromic state of MoO3 to develop a photochromism‐assisted photoconductive photodetector with fast response (<0.1 s), significant photocurrent on/off ratio and excellent responsivity (41 AW−1 at 459 nm) under the applied bias of 5 V. The light harvesting strategy presented herein holds the potential for efficient energy generation by harnessing visible light, even under low‐light conditions.

Spiny lobster recreational fisheries in Australia and New Zealand: An overview of regulations, monitoring, assessment and management

Spiny (rock) lobsters occur globally and, although harvest is dominated by commercial fisheries, it is important to account for recreational harvest in stock assessments and fisheries management. This paper provides a contemporary review of recreational fishing for five spiny lobster species in Australia and New Zealand. Each jurisdiction has established approaches for collecting data which best meet their information needs (telephone-diary or telephone-recall surveys, charter logbooks, tag reporting). Jurisdictions with specific spiny lobster licences (Western Australia, Tasmania) or mandatory reporting (charter logbooks in Western Australia, tag reporting in Victoria) use these registers as a sampling frame for annual reporting of participation, fishing effort, catch (numbers) and harvest (tonnes). All other jurisdictions use a general fishing licence or general population sampling frame for telephone-diary surveys to provide periodic reporting of catch and harvest. Annual participation in spiny lobster recreational fishing was highest in Western Australia (35,236 ± SE 626 fishers in 2022–23), followed by Tasmania (13,715 ± SE 1067 fishers in 2022–23) and Victoria (5516 fishers in 2020–21). Annual recreational harvest of all spiny lobster species, combined for the most recent data collection period in each jurisdiction, was 830 tonnes; consisting mostly of Western Rock Lobster (Panulirus cygnus) from Western Australia and Southern Rock Lobster (Jasus edwardsii) from Tasmania and New Zealand. This review illustrates the various spatial scales of monitoring, reporting and assessment in each jurisdiction. All monitoring provides information on catch and harvest, with some also reporting participation, effort, carapace length and non-catch related variables. The designs underlying these approaches vary from probability-based (opt-out) and census (mandatory), and it is important to understand the benefits and inherent biases of each. Understanding the parallels between jurisdictions offers valuable insights into how to cost-effectively monitor spiny lobster recreational fisheries and integrate this data into stock assessment and harvest strategies to support sustainable fisheries into the future.

Assessment on demersal fisheries status in the FMA 573 under data-limited situation: A combination of statistic and CPUE data as inputs for bayesian surplus production model

Abstract Demersal stock potential, total allowable catch (TAC), and exploitation level status in the FMA 573 were assessed and determined by the National Commission of Stock Assessment (KOMNASKAJISKAN) through Ministerial Decree No. 19/2022. However, the fisheries status, i.e., the biomass level concerning the BMSY and the effort level compared to FMSY, was not completely determined. This study demonstrated the alternative approach to determining fisheries status under limited data. Statistical time series production and existing CPUE data were used to perform the Bayesian Surplus Production Model (cMSY). Based on the results, the stock of demersal fisheries in FMA 573 is overexploited, whereas the F/FMSY and B/BMSY are>1 and <1, respectively. The situation needs concern from all stakeholders. Rebuilding the stock formulation scheme through harvest strategy development for demersal fisheries in FMA 573 must be prioritized to ensure the sustainability of the stock and the fisheries business.

End-to-end stereo matching network with two-stage partition filtering for full-resolution depth estimation and precise localization of kiwifruit for robotic harvesting

Full-resolution depth estimation within operational space of robotic arms and accurate localization of kiwifruits is very important for automated harvesting. Depth estimation is expected to be accurate and full-resolution while current depth estimation methods are susceptible to depth missing due to occlusion and uneven illumination. And depth estimation mostly focuses on fruit localization, while obstacles such as branches and wires, which can affect harvesting strategy, have not been considered. This paper localized kiwifruits based on bounding boxes output by YOLOv8m and full-resolution depth from an end-to-end stereo matching network, i.e., LaC-Gwc Net, which was trained after generating a stereo matching dataset by proposing a two-stage partition filtering algorithm. Results showed that LaC-Gwc Net achieved an end-point error (EPE) of 3.8 pixels, which means that accurate depth estimation can also be achieved for thin obstacles such as the branches and the wires. Additionally, YOLOv8m obtained acceptable results in detecting kiwifruits and their calyxes, reaching mean average precision (mAP) of 93.1% and detection speed of 7.0 ms. The methodology obtained only kiwifruit localization error of 4.0 mm on the Z-axis, which meets requirements of robotic harvesting. Furthermore, this study considered the localization of obstacles in kiwifruit orchards, providing high-precision full-resolution depth estimation for agricultural harvesting robots.