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Development and Evaluation of a Hole-Punch Applicator for Precision Application of Preemergence Herbicides in Plasticulture Production

Published online by Cambridge University Press:  11 December 2018

Nathan S. Boyd Open the ORCID record for Nathan S. Boyd [Opens in a new window]  and
Arnold Schumann
Nathan S. Boyd*
Affiliation:
Associate Professor, Gulf Coast Research and Education Center, Horticultural Sciences Department, University of Florida, Wimauma, FL, USA
Arnold Schumann
Affiliation:
Professor, Citrus Research and Education Center, Soil and Water Sciences Department, University of Florida, Lake Alfred, FL, USA
*
Author for correspondence: Nathan S. Boyd, Gulf Coast Research and Education Center, University of Florida, 14625 County Road 672, Wimauma, FL 33598. (Email:nsboyd@ufl.edu)
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Abstract

Preemergence herbicides are typically applied by broadcasting to the top of raised beds before laying the plastic mulch in plasticulture production systems. Broadleaf and grass emergence is limited to transplant holes in the mulch. As a result, most herbicides are applied under the mulch in locations where weeds cannot emerge and herbicides are unnecessary. To reduce this excessive off-target application, a precision hole-punch sprayer was developed at the University of Florida for use in plasticulture production systems. The technology facilitates the application of herbicides during the hole-punch operation immediately before transplant. Application of napropamide and S-metolachlor in an application volume of 233 L ha−1 of water using the precision hole-punch applicator had no effect on tomato and bell pepper growth and yield. Equipment accuracy ranged from 55% to 90%. Preemergence herbicide use was reduced by 88% to 92% with no reduction in weed control. The hole-punch applicator is an effective way to reduce PRE herbicide use in transplant vegetables grown using the plasticulture production system.

Keywords

Steve Fennimore, University of California, DavisNapropamideS-metolachlorbell pepper, Capsicum annuum L.tomato, Solanum lycopersicum L.Precision agriculturevegetable
Type
Research Article
Information
Weed Technology , Volume 33 , Issue 1 , February 2019 , pp. 142 - 146
Copyright
© Weed Science Society of America, 2018. 

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Footnotes

Cite this article: Boyd, NS, Schumann A (2018) Development and evaluation of a hole-punch applicator for precision application of preemergence herbicides in plasticulture production. Weed Technol 33:142–146. doi: 10.1017/wet.2018.100

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