Soybean yield response to different mechanical weed control methods in organic agriculture in Luxembourg

Richard, David; Leimbrock-Rosch, Laura; Keßler, Sabine; Stoll, Evelyne; Zimmer, Stéphanie

doi:10.1016/j.eja.2023.126842

Cited by 5 publications

(2 citation statements)

References 33 publications

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“…In European and American countries, rice cultivation is typically done via aerial seeding, which makes mechanical weeding operations challenging. Research in these regions has primarily focused on the efficient use of herbicides [12][13][14][15], but the excellent weeding equipment developed for dryland farming is worth considering [16,17]. In China, rice is often transplanted mechanically, allowing for the orderly growth of seedlings in the field, which is conducive to the sustainable development of inter-row weeding machinery [18].…”

Section: Introductionmentioning

confidence: 99%

A Combined Paddy Field Inter-Row Weeding Wheel Based on Display Dynamics Simulation Increasing Weed Mortality

Wang,

Liu,

Yang

et al. 2024

Agriculture

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Weeds compete with rice for sunlight and nutrients and are prone to harboring pathogens, leading to reduced rice yields. Addressing the issues of low weeding efficiency and weed mortality rates in existing inter-row weeding devices, the study proposes the design of a combination paddy field inter-row weeding wheel. The device’s operation process is theoretically analyzed based on the weed control requirements in the northeastern region of China, leading to the determination of specific structural parameters. This research conducted experiments on the mechanical properties of weed cutting to obtain geometric parameters for paddy field weeds. It was found that the range for the cutting gap of the dynamic–fixed blade is between 0.6 mm to 1.4 mm and the cutting angle is between 5° to 15°, resulting in the lowest peak cutting force for weeds. Using LS-DYNA R12.0.0 dynamic simulation software, a fluid–structure interaction (FSI) model of the weeding wheel–water–soil system was established. By employing the central composite experimental design principle and considering the soil stir rate and coupling stress as indicators, the optimal structural parameter combination for the device is obtained: a dynamic–fixed blade cutting gap of 1.4 mm, a cutting angle of 10.95°, and a dynamic blade install angle of −3.44°. Field experiments demonstrated that the device achieved an average weeding rate of 89.7% and an average seedling damage rate of 1.9%, indicating excellent performance. This study contributes to improving weed mortality rates and provides valuable guidance for inter-row mechanical weeding technology.

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Section: Introductionmentioning

confidence: 99%

A Combined Paddy Field Inter-Row Weeding Wheel Based on Display Dynamics Simulation Increasing Weed Mortality

Wang,

Liu,

Yang

et al. 2024

Agriculture

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“…Compared with chemical methods, mechanical weeding does not pollute the environment; moreover, it loosens the soil, stores water, preserves moisture, increases soil temperature, and promotes crop seedling growth [12][13][14]. Therefore, mechanical weeding exhibits great application prospects in global dryland agricultural production [15,16].…”

Section: Introductionmentioning

confidence: 99%

Design and Experiment of a High-Clearance Mid-Tillage Weeder for Dryland Farming

Ye,

Zhang,

Wang

et al. 2024

Agriculture

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Mechanical weeding is an important technical means for organic and regenerative agricultural systems. Current weed control equipment has a variety of problems, such as difficulty adapting to high-stalk crops and poor operational quality. A high-clearance mid-tillage weeder (HMTW) has been developed to meet the mechanical weed control needs of high-stalk crops. The weeder mainly comprises a suspension device, a frame, parallel four-rod profiling mechanisms, weeding operation components, and depth-limiting soil-cutting devices. Based on the agronomic requirements of dryland flat planting, the overall structure of the HMTW was determined, and the weeding unit and flat shovel hoe were designed. Theoretical analysis was conducted on the depth stability of the HMTW, and an optimization mathematical model of the HMTW was established to further improve its tillage depth stability for agronomic requirements. The optimization objective was to minimize the deflection angle (∆β) of the profiling rod on a vertical plane, and the parameters of the parallel four-rod profiling mechanism were optimized. Based on the optimized structural parameters, a prototype of the HMTW was developed and evaluated. The test results show that the optimized HMTW exhibited a good weeding effect, and the tillage depth stability was within the design operating range. When the driving speed was 1.0 m/s and the tillage depth was 8 cm, the weed removal rate, seedling injury rate, seedling burial rate, and qualified rate of tillage depth were 90.8%, 3.2%, 4.1%, and 94%, respectively. The proposed HMTW successfully meets the weeding agronomic requirements of high-stalk crops for dryland farming, and the performance analysis and optimization models provide technical references for the design and development of such structures.

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Comparative studies of knapsack, boom, and drone sprayers for weed management in soybean (Glycine max L.)

Hiremath,

Khatri,

Jagtap

2024

Environmental Research

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Soybean yield response to different mechanical weed control methods in organic agriculture in Luxembourg

Cited by 5 publications

References 33 publications

A Combined Paddy Field Inter-Row Weeding Wheel Based on Display Dynamics Simulation Increasing Weed Mortality

A Combined Paddy Field Inter-Row Weeding Wheel Based on Display Dynamics Simulation Increasing Weed Mortality

Design and Experiment of a High-Clearance Mid-Tillage Weeder for Dryland Farming

Comparative studies of knapsack, boom, and drone sprayers for weed management in soybean (Glycine max L.)

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