Fig. 1.

Planting dates for AC Lacombe and Vivar barley, Murphy oat, and Wapiti triticale and their resultant heading and harvest dates illustrating the entire seasonal distribution from planting to harvest date or swathing, vegetative (planting to heading), and grain-filling periods (heading to harvest date) in a forage context averaged over years when grown at Lacombe, AB.

 


Fig. 2.

Growing degree days from planting to harvest, illustrating seasonal distributions of vegetative (planting to heading) and filling (heading to harvest) periods for AC Lacombe and Vivar barley, Murphy oat, and Wapiti triticale when planted at seven dates averaged over years and grown at Lacombe, AB.

 


Fig. 3.

Relationships between delay of planting after 12 to 14 May (seven consecutive weeks) and (a) heading date (Julian) (b) harvest date (Julian) for AC Lacombe and Vivar barley, Murphy oat, and Wapiti triticale grown at Lacombe, AB, 2005– 2007. Equations shown in Table 3.

 


Fig. 4.

Relationships between delay of planting after 12 to 14 May (seven consecutive weeks) and (a) vegetative period (planting to heading- d), (b) filling period (heading to harvest–d) (c) planting to harvest–d (d) vegetative period in growing degree days > 0.0 (GDD), (e.) filling period (GDD) and (f) planting to harvest (GDD) for AC Lacombe and Vivar barley, Murphy oat, and Wapiti triticale grown at Lacombe, AB, 2005 to 2007. Equations shown in Table 4.

 


Fig. 5.

Relationships between delay of planting after 12 to 14 May (seven consecutive weeks) and (a) starch (b) neutral detergent fiber (NDF), (c) cell wall digestibility (d) acid detergent fiber (ADF), and (e) total digestible nutrients (TDN) for AC Lacombe and Vivar barley, Murphy oat, and Wapiti triticale grown at Lacombe, AB, 2005 to 2007. Equations shown in Table 6.

 


Fig. 6.

Relationships between delay of planting after 12 to 14 May (seven consecutive weeks) and (a) dry matter (DM) yield and (b) estimated carrying capacity for AC Lacombe and Vivar barley, Murphy oat, and Wapiti triticale grown at Lacombe, AB, 2005 to 2007. Equations shown in Table 8.