Submitted to: Elsevier
Publication Type: Book / Chapter
Publication Acceptance Date: 12/1/2000
Publication Date: 1/1/2007
Citation: Evans, R.G., Waller, P.M. 2007. Application of chemical materials, Chapter 8. In: Lamm, F.R., Ayars, J.E., Nakayama, F.S. editors. Developments in Agricultural Engineering 13, Microirrigation for Crop Production. 1st Edition. The Netherlands, Amsterdam: Elsevier. p. 285-327. Interpretive Summary: Book chapter on the application of agrochemicals through microirrigation systems (which include drip, trickle, bubblers and mircrosprinklers). Many chemicals are injected into these systems for general maintenance as well as fertilizers and some pesticides. Environmental contamination and personal safety are major concerns. Consequently, it is quite important to provide guidance and suggestions for safe and efficient operation. The book chapter is intended as a technical reference on the use of chemicals in conjunction with these efficient irrigation systems.
Technical Abstract: Chemigation is defined as the application of a chemical with irrigation water. Chemicals are injected into microirrigation systems to fertilize crops, to control clogging and to control pests. Chemigation is required for sustainable operation of microirrigation systems. Consequently, microirrigation must be managed as both a water and a chemical application system. Microirrigation systems are also commonly used to apply water-soluble fertilizers, plant growth regulators, insecticides (usually systemic), herbicides, nematicides, and other compounds. Each chemical must be handled according to its intended use, physical properties, and associated legal requirements. Water management is critical and personal safety protection must be assured for any successful chemigation program.