Key Points When is the fall rest period? The fall rest period (sometimes called “critical fall harvest period”) for alfalfa is 450 growing degree days, base 5°C — or approximately 6-weeks — before the average date of the first killing frost (-4°C for several hours), when alfalfa stops growing. Not cutting during this period allows […]
Winter wheat can often be found to survive short freeze thaw events throughout the winter. However, there are concerns about crop damage and survivability, particularly in those fields that were planted late last fall and those fields that were covered in ice for prolonged periods. When making assessments for winter survival, fields are typically walked […]
Many fields across Ontario may be at risk of alfalfa winter kill this year. This post contains links to OMAFRA resources that can help you determine whether your fields were at risk, if damage occurred, and what to consider for next steps. Late cutting can increase risk Due to rain delays, some fields were cut during […]
Alfalfa winterkill is particularly severe in the Ottawa Valley and New Liskeard areas. There are many options to consider for emergency forage, depending on the calendar date, urgency for short term feed, and forage yield and nutrient quality requirements. Refer to “Forage Options When Alfalfa Winterkill Strikes” (https://fieldcropnews.com/?p=6680) Forage supplies are extremely tight, and forage […]
It can be very tempting to cut some alfalfa for haylage or baleage in the fall, particularly when supplies are tight or there is a lot of growth. The decision to cut or not needs to weigh the immediate need for forage against the increased risk of alfalfa winterkill and reduced yields next spring. How do […]
By early to mid April, the base of healthy alfalfa plants will have firm buds and numerous new green shoots with 2 to 5 inches (5 to 13 cm) of growth. Damaged plants, on the other hand, will show no or minimal green-up. Digging up plants and cutting the root open lengthwise is helpful in […]