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Research Outline
Prepared for Ray M. | Delivered June 4, 2020
US & Canada Crop Spacing
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Goals
To inform the design of an autonomous weed picking robot by determining the range of crop spacing dimensions for carrots, onions and baby greens in commercial farm operations (at least 100 acres) in the US and Canada.
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Early Findings
Initial Findings
US
According to the University of Georgia, US commercial farms look to plant carrots in "
twin rows that are 2.5-3.5 inches apart.
"
Additionally, these sets of twin rows are placed
14 to 18 inches apart
.
Within each individual row, carrots are "
spaced 1.5 to 2 inches apart
" and at a depth that is no greater than
1/4 to 1/2 inches
.
Notably, these carrot planting standards do no appaer to vary by the variety of commercial carrot (e.g.,
apache, choctaw, vita sweet 691
).
Canada
According to the government of Saskatchewan, carrots are typically planted at the rate of "
10 to 16 plants per 30 cm (12 inches) of row
" for Nantes carrot varieties and "
12 to 18 plants per 30 cm (12 inches) of row
" for Imperator carrot varieties.
Additionally, inter-row spacing for carrots can range from "
41 to 76 cm (16 to 30 inches).
"
Meanwhile, commercial carrots are typically planted at a depth of "
1.9 to 2.5 cm (¾ inch to one inch)
."
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