Conditions: Below average temperatures persisted throughout most of April. At Ottawa, approximately 100 CHU and 65 mm of rain were accumulated in April. Soils dried slowly and field activity only picked up during the last few days of April. Forages: Alfalfa winter survival is excellent, generally in the 90% plus range. Alfalfa fields not harvested […]
Conditions: Moderate temperatures at the end of winter, combined with limited precipitation minimized spring water runoff and soil erosion. Soil is drying slowly, allowing for only limited field activity to date. Alfalfa: Winter survival generally looks excellent. Alfalfa has 1 to 2 inches of new growth at this point and is showing no sign of […]
Conditions: Over 75% of the manure is out and 40-50% of the ground has been worked. Forages: Nitrogen fertilizer has largely been applied on grass hay fields. Alfalfa growth has picked up over the last week (6” to 8”). While alfalfa winter survival is generally good, winterkill (Figure 1) is becoming evident and some fields […]
Conditions: Fields have been slow to dry. Only a small amount of manure has been applied. About 25% of the nitrogen/fertilizer has been applied to winter wheat and grassy forage stands. Alfalfa: Winter survival is very good (Figure 1), generally in the 90% range, except for areas along the St Lawrence (Morrisburg/Brockville), which have up to 80% […]
Conditions: More rainfall in region south and east of Ottawa over the April 12th weekend. Fields are generally saturated. Upper Ottawa Valley has drier conditions. Moisture from snow melt got away with very little ponding in most areas. Alfalfa: Winter survival looks good to date. Alfalfa has 2 to 3 inches of new growth at […]
Rain in the past week ranged from 25 to 100 mm across the region. The upper valley and the far east of the region received the most. During the month of May the region accumulated roughly 450 Crop Heat Units (CHUs) or about 20 CHUs above the 30 year average. Precipitation was extremely variable across […]
From May 1st to 12th, accumulations of 15 to 30 mm of rain and 220 Crop Heat Units (CHU) were recorded. The long term average for this same period is about 130 CHU. There was frost on May 14th across eastern Ontario with a low of -2o to -3o C. Little damage expected as the […]
Frost heaving can significantly damage alfalfa plants, leaving stands with much less or even zero yield potential. Plants may initially appear undamaged, but taproots are typically broken and unable to pick up enough nutrients or moisture, and stands eventually die. Frost heaving of alfalfa happens when repeated freezing and thawing pushes the tap root and crown out of the soil. […]
Last summer, potato leafhopper (PLH) certainly lived up to its reputation as the most damaging alfalfa insect pest in Ontario. In many parts of the province, PLH feeding resulted in yield loses of over 1 tonne of alfalfa per acre or roughly a loss of $200/acre. While PLH damage was far greater than normal, it […]
First-cut hay is being finished while second-cut haylage is complete on some dairy farms. With reduced yields and acres, hay inventories are limited in some areas and record high prices are being reported. There are still reports of armyworm, but it is declining. There were some reports of European skipper feeding damage to forage grasses, […]
When grubs hit hard, forage supplies dwindle fast! Stand loss in hay fields and pastures due to grub damage is becoming more common. Warm open falls and warm springs are ideal for grub feeding activity. (Figure 1) The result is a thin, weedy stand with low yields , and poor resistance to drought. Grubs prefer […]
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 […]