Adaptive detection of volunteer potato plants in sugar beet fields

Nieuwenhuizen, A.T.; Hofstee, J.W.; Henten, E.J. van

doi:10.1007/s11119-009-9138-9

Cited by 21 publications

(6 citation statements)

References 22 publications

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“…The literature indicates the potential of adaptive algorithms both for sensing (Edan et al., ; Nieuwenhuizen et al., ) and manipulation (Grift et al., ). As an example of the effect of an adaptive classifier, Nieuwenhuizen et al () detected potato plants that occur as weeds in a sugar beet crop. Under changing natural light conditions, the classification accuracy improved from 34.9% (nonadaptive) to 67.7% (adaptive).…”

Section: Future Challenges and Randd Directionsmentioning

confidence: 99%

Harvesting Robots for High‐value Crops: State‐of‐the‐art Review and Challenges Ahead

Bac

Henten

Hemming

et al. 2014

Journal of Field Robotics

515

351

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This review article analyzes state-of-the-art and future perspectives for harvesting robots in high-value crops. The objectives were to characterize the crop environment relevant for robotic harvesting, to perform a literature review on the state-of-the-art of harvesting robots using quantitative measures, and to reflect on the crop environment and literature review to formulate challenges and directions for future research and development. Harvesting robots were reviewed regarding the crop harvested in a production environment, performance indicators, design process techniques used, hardware design decisions, and algorithm characteristics. On average, localization success was 85%, detachment success was 75%, harvest success was 66%, fruit damage was 5%, peduncle damage was 45%, and cycle time was 33 s. A kiwi harvesting robot achieved the shortest cycle time of 1 s. Moreover, the performance of harvesting robots did not improve in the past three decades, and none of these 50 robots was commercialized. Four future challenges with R&D directions were identified to realize a positive trend in performance and to successfully implement harvesting robots in practice: (1) simplifying the task, (2) enhancing the robot, (3) defining requirements and measuring performance, and (4) considering additional requirements for successful implementation. This review article may provide new directions for future automation projects in high-value crops. C 2014 Wiley Periodicals, Inc.

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Section: Future Challenges and Randd Directionsmentioning

confidence: 99%

Harvesting Robots for High‐value Crops: State‐of‐the‐art Review and Challenges Ahead

Bac

Henten

Hemming

et al. 2014

Journal of Field Robotics

515

351

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“…Precision agriculture flow control has recently evolved to high resolution machine vision detection systems allowing real-time capabilities (Thorp and Tian 2004). The detection and identification of individual weeds requires both high resolution machine vision technology systems (Tellaeche et al 2008;Nieuwenhuizen et al 2010) and an actuator for pesticide, delivering to the right target (Lee et al 1999;Giles et al 2002;Miller et al 2012a). …”

Section: Introductionmentioning

confidence: 99%

The effect of surface orientation on spray retention

2014

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Research in precision spraying investigates the means to reduce the amount of herbicide applied by directing droplets more accurately towards the weeds. The trend in the development of spot spraying equipment is an increase of the spatial resolution and new actuators that are able to target very small areas. However, there is a lack of methods for assigning rates of herbicides relating target to optimal droplet features. A wide range of droplet impact angles occurs during the spray application process because of droplet trajectories and the variability of leaf orientation. In this study, laboratory experiments were conducted to highlight the effect of surface orientation on droplet impact outcomes (adhesion, rebound or splashing) on two very difficult-to-wet surfaces: an artificial surface with a regular roughness pattern and an excised black-grass leaf with an anisotropic roughness pattern. Measurements were performed for different surface orientations with a high-speed camera coupled with backlighting LED. Droplets of two formulations (distilled water and distilled water + a surfactant) were produced with a moving flat-fan hydraulic nozzle to obtain a wide range of droplet sizes and velocities, which were measured by image analysis. Increasing surface angle reduces surface area available for droplet capture. Droplet impact behaviors are then modified since surface tilt induces a tangential velocity component at impact and, consequently, a reduction of the normal component. Impact modifications have also been observed due to the anisotropic roughness pattern of a black-grass leaf.The integration of droplet-surface interaction information offers a significant way to further improve the precision spraying efficiency by considering the optimal droplet size, speed and ejection angle depending on the target surface and architecture.2

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“…A perennial weed, volunteer potato plants are considered a major agronomic problem in crop rotations (Boydston and Williams, 2005;Boydston, 2006, 2002;Nieuwenhuizen et al, 2010) due in part to their ability to withstand control measures (Koepke-Hill et al, 2010). Previous reports have noted that volunteers are minimally affected by several herbicides applied in UK rotations (Turley, 2001).…”

Section: Discussionmentioning

confidence: 99%

Propensity for seed-mediated gene flow from potato crops and potential consequences for the coexistence of GM and non-GM potato systems

Phelan

Fitzgerald

Grant

et al. 2015

European Journal of Agronomy

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Potato is a critical crop to European growers, both economically and agronomically as a break crop in the standard cereal rotation. As studies investigating the agronomic performance and environmental impact of disease resistant, GM potatoes come to an end across several sites in Europe, past discussions on achieving the effective coexistence of GM and equivalent non-GM crops have too often focussed on the purported risk of excessive pollen-mediated gene flow. Dependent on the crop in question, the impact of seed loss pre-and/or post-harvest presents a greater challenge to securing efficient coexistence practises. To examine this issue for potato, a total of 51 fields that had been commercially cultivated with potatoes were surveyed in two separate cohorts for post-harvest tuber loss and/or volunteer emergence. Across 17 fields studied, the average post-harvest tuber loss was recorded at 141,758 ± 911 tubers ha −1 , with volunteer establishment in the following crop ranging from 400 ± 59 ha −1 to 55,698 ± 47 ha −1. In parallel, by surveying a separate cohort of 34 commercial fields an average of 30,789 ± 2658 volunteer ha −1 was recorded in the subsequent cereal crop, with a repeat survey made after an additional year indicating an 87.2% reduction in this mean number of volunteers across the 34 fields (P < 0.001). Of the additional variables studied only location (P < 0.001), herbicide application (P = 0.037) and potato variety used (P = 0.045) significantly influenced volunteer proliferation. Volunteer fecundity was confirmed with upto 3 tubers produced per 1st generation volunteer, with tuber yield from the 2nd generation volunteers reduced significantly (P < 0.001). Assessments of the tuber lots from these 2nd generation volunteers confirmed their ability to sprout post-dormancy, therefore, indicating the potential for 3rd generation volunteers to emerge. Combined, the datasets confirm the potential for significant seed-mediated gene flow from commercial potato systems; indicating that the regulated 0.9% coexistence threshold would in all probability be compromised if GM potatoes were grown in rotations of 1:4 years or less, in the absence of a comprehensive tuber loss and/or volunteer management system.

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Adaptive detection of volunteer potato plants in sugar beet fields

Cited by 21 publications

References 22 publications

Harvesting Robots for High‐value Crops: State‐of‐the‐art Review and Challenges Ahead

Harvesting Robots for High‐value Crops: State‐of‐the‐art Review and Challenges Ahead

The effect of surface orientation on spray retention

Propensity for seed-mediated gene flow from potato crops and potential consequences for the coexistence of GM and non-GM potato systems

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