Elsevier

Crop Protection

Volume 12, Issue 3, May 1993, Pages 207-213
Crop Protection

Paper
Assessment of single-nozzle patternation and extrapolation to moving booms

https://doi.org/10.1016/0261-2194(93)90110-5Get rights and content

Abstract

The extrapolation from measurements of static deposition patterns produced by single nozzles to multi-nozzle booms was investigated for a wide range of agricultural nozzles, using a non-intrusive patternator. The spray deposit pattern was determined for seven nozzle types for single-nozzle pattern or on a three-nozzle boom at 0.198 km h−1 and for one nozzle (an XR8003VS) at a typical field speed (6.4 km h−1) in a track-room. A method for statistically separating coefficients of variation (CV) for the patterns was derived. For low throughput nozzles, there were statistically significant differences between computer simulations derived from single-nozzle patterns and the patterns produced by multiple-nozzle booms. For the XR8003VS, there were no significant differences between the computer simulation, the statistically derived pattern, or the pattern produced at 6.4 km h−1. The spray deposit patterns produced by the various nozzle combinations were examined with respect to biological efficacy using theoretical dose-response curves covering a wide range of dose responses. A CV of < 10% for a swath pattern can be biologically efficient, but 4.5% of the spray is wasted in overdosing. To compensate for uneven application, increasing dose was shown to be an inefficient means of achieving the biological result desired.

References (14)

There are more references available in the full text version of this article.

Cited by (14)

View all citing articles on Scopus
View full text