Soil water diffusivity as function of the pore size distribution and precompression stress

Beck‐Broichsitter, Steffen; Schroeder, Richard; Mordhorst, Anneka; Fleige, Heiner; Horn, Rainer

doi:10.1016/j.still.2023.105675

Cited by 1 publication

(2 citation statements)

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“…Subsequently, the development of the hoe opener for simultaneously administering seeds and mineral fertilizers took shape (Figure 1b). The foundational hoe opener comprises an opener tip (1), opener (2), trapezoidal pipe shank (3), cylindrical drum (4), and a delivery tube for granular fertilizer or wheat seeds (5). The opener tip (1) is connected to the opener (2) through two bolts, and the trapezoidal pipe shank (3) is welded to the opener (2).…”

Section: Methodsmentioning

confidence: 99%

“…In the immediate term, adopting no-tillage practices leads to higher moisture retention in the uppermost soil layer. However, it also brings about reduced soil aeration and increased mechanical resistance to the penetration of plant roots [5]. Despite the short-term effects, sustained implementation of no-tillage practices over a 15-year period in semi-arid regions with loamy soil has demonstrated notable improvements in soil properties.…”

Section: Introductionmentioning

confidence: 99%

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Optimal Design and Discrete Element Method Model Development of the Acute Angle Hoe Opener for No-Till System

Wang,

Kang,

Adilet

et al. 2024

Processes

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A specialized hoe opener was engineered for no-till systems to apply substantial amounts of wheat seeds and granular fertilizers, effectively suppressing early stage weeds. This distinctive hoe opener plants wheat seeds within a 120 mm wide horizontal band, positioning granular fertilizers precisely at the band’s center, all accomplished in a single pass. Notably, the design excels at covering the fertilizer with soil aggregates, compacting it through a wheat separator, and concurrently depositing wheat seeds from above. Our primary research objectives centered on achieving a consistent seedbed post-fertilizer application and ensuring a uniform distribution of wheat seeds within the horizontal band. The DEM (Discrete Element Method) was exploited to optimize the hoe opener’s parameters. Through extensive simulations and comparisons with experimental outcomes, an optimal wing orifice AB length of 60 mm was identified, effectively covering granular fertilizers with soil aggregates and achieving compaction through the wheat separator. Furthermore, parameters of the wheat seed separator’s hump were fine-tuned using the Box–Behnken algorithm, resulting in an optimal dimension of 40 mm for the top radius (A), 140 degrees for the top angle (B), and 90 mm for the bottom length (C).

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%