Kingdomcomeorg httpwwwchriscovattacom httpwwwhinducom

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: sensors attached to the “$100 datalogger” we have developed (c). Evapotranspiration- it is the evaporation from the soil plus transpiration from the leaves. Evapotranspiration - ET • Used to describe water use of crops – Includes both transpiration and evaporation http://www.kingdomcome.org/ http://www.chriscovatta.com/ http://www.hindu.com/ Transpiration Evapotranspiration - ET you are talking about well watered crops. ET can change over the season, changes based on the location • Used to describe water use of WELL WATERED crops – Includes both transpiration and evaporation – Changes over the seasons – Changes with location – Corrections can be made for water stressed crops Transpiration ET0 • Reference ET = ET0 – The evapotranspiration that occurs from a standardized "reference" crop such as clipped grass or alfalfa. the reference ET is called ET0. http://www.cprl.ars.usda.gov/ Transpiration Measuring ET0 • Class A evaporation pan this is a way of measuring it. this is a pan of water and you me...
View Full Document

This document was uploaded on 01/17/2014.

Ask a homework question - tutors are online