SSMG-25 (J. Cardina and D. J. Doohan)

Weed Biology and Precision Farming

Summary:

Weeds, and methods used to control weeds, can have negative economic and environmental impacts. With precision agriculture, growers can take advantage of the patchy nature of weeds by targeting management efforts only where they are needed instead of wasting expensive and potentially hazardous inputs where weeds are not present. Weeds are patchy because weed spread, survival, and reproduction are variable within a field and over time. Weed patches stay in about the same place from year to year, even though weed density within a patch may vary. This Guideline describes the biological basis for weed patchiness and discusses how human-aided dispersal and manipulation of field conditions contribute to the spread of weeds.

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