"This USDA website will not be updated during a lapse in federal funding. Content on this website will not be current or maintained until funding issues have been resolved. However, if there is information that affects security, life, and property, this website will continue to update that information during a funding lapse."


An automatic device for watering at the right time and in the right amount.

Download this file:

PDF document Download this file — PDF document, 1148Kb


Author(s): Gerland A. Walters

Publication: Tree Planters' Notes - Volumes 28, Number 3 (1977)

Section: General

Volume: 28

Number: 3

Personal tools