AL Canada company logo

A&L Canada Laboratories Inc.

Home News Pay Invoice Instructional Videos FAQs
burger menu icon
Click to view quick links
Click to view the latest events or workshop
Click to view shopping cart
Click to search
Click to back to top

Growing Degree Days


Growing Degree Days is a measurement of the accumulation of heat based on mean daily temperature above 5 C. There is a correlation between growing degree days and plant maturity. By tracking the feed analysis (Protein, ADF, NDF, Lignin, RFV) and growing degree days we can estimate the optimum harvest date of a forage crop.

Scissor Cut Samples 2018

Alfalfa
DateTotalProtein %ADF %NDF %Lignin
May 13thGDD 150°C31.642519.407528.78756.53
May 16thGDD 178°C28.42522.6126.92255.42
May 21thGDD 231°C24.2725.3732.337.01
May 24thGDD 262°C24.0327.1234.876.89
May 27thGDD 306°C21.9729.5838.666.9
May 30thGDD 362°C19.2231.7538.736.89
Grass
DateProtein %ADF %NDF %Lignin
May 13th26.01524.5145.383.1025
May 16th24.0626.8947.37753.09
May 21th21.428.2248.473.88
May 24th18.7930.5954.213.07
May 27th18.2831.8255.043.37
May 30th16.4633.2358.53.77
Rye Grass
DateProtein %ADF %NDF %Lignin
May 13th31.7323.2345.09
May 16th
May 21th
May 24th
May 27th
May 30th