About Us | Help Videos | Contact Us | Subscriptions

Agronomy Journal Abstract -

Cupric Ion as a Tracer to Measure Spray Application Efficiency


This article in AJ

  1. Vol. 82 No. 1, p. 166-168
    Received: Apr 14, 1986

    * Corresponding author(s):
Request Permissions

  1. R. L. Nichols,
  2. T. P. Gaines and
  3. M. G. Stephenson 
  1. M aag Agrochemicals, Inc., Vero Beach, FL 32961
    D ep. of Agronomy, USDA-ARS, Univ. of Georgia Coastal Plain Exp. Stn., Tifton, GA 31793-0748
    U SDA-ARS, Univ. of Georgia Coastal Plain Exp. Stn, Tifton, GA 31793-0748



Water in neutron-probe access tubes and mini-rhizotrons impedes the acquisition of accurate data under wet field conditions. When such situations arise, water must be extracted before data can be taken. The objective was to design, construct, and use a pump that would be easy to operate, portable, and inexpensive. The pump was found to be a useful tool for extracting undesired water from access tubes and mini-rhizotrons, Only one to three strokes of the pump were necessary to remove all but about 0.05 to 0.1 L of water from a 2.5-m-long neutron access tube that was completely filled with water. The pump, which is easily constructed with materials available at any hardware store, proved to be an easy-to-use and costeffective tool for field use.

Contnbution from the U.S. Salinity Lab., PWA, USDA-ARS, Riverside, CA. The device described herein was constructed and tested while the author was with the Blackland Res. Ctr., Texas Agric. Exp. Stn., Temple, TX 76503.

  Please view the pdf by using the Full Text (PDF) link under 'View' to the left.

Copyright © .