The province experienced weather extremes. Southern Ontario saw warmer conditions that supported corn and soybean growth and helped dry fields still awaiting planting. However, wind and scattered rain complicated weed control efforts. In the Northeast and Northwest Ontario, temperatures neared 0°C, raising concerns about frost damage to emerged soybeans and white beans. Field assessments are ongoing.| Field Crop News
A cooler than average start to the growing season has added some uncertainty to post-plant nitrogen fertilization strategies for Ontario corn producers. Soil supply of nitrogen to the corn crop is likely lower than normal due to reduced N mineralization from both soil organic matter and manure, and the Maximum Economic Rate of Nitrogen (MERN) for a given field may be somewhat higher than an average year.| Field Crop News
It’s been a tough spring across much of Ontario and growers continue to face variable weather conditions, creating both opportunities and challenges across regions. Frequent rain events have delayed planting in parts of eastern Ontario, particularly on heavier clays from Belleville to Kingston and Essex which had up to 3” of rain last week halting soybean planting. Unfavourable weather has continued to challenge spray operations across much of the province. High winds have reduced the num...| Field Crop News
Have you been seeing increased corn rootworm pressure in your continuous corn fields over the last few years? Monitoring with sticky traps can help you determine if you have a Bt resistant corn rootworm problem and it helps us keep track of where these problem fields are. Thanks to GFO and ABSTC, we still have some free corn rootworm sticky traps to give away this year to any interested trap participants, new or experienced. Fields with a history of corn on corn and repeated CRW Bt hybrid use...| Field Crop News
The growth points of alfalfa and red clover are at the tips of the stems, so management recommendations depend on the amount of damage:Less than 50% growth points removed: wait to cut until planned harvest maturity. Expect reduced yields.| Field Crop News
This cooler, wet weather seems to have delayed plant growth but also has been ideal for pests to build in fields or do more feeding while the plant growth is slowed.| Field Crop News
Cooler than normal weather continued, with several overnight lows below 10°C. In the southwest, crop heat units (CHUs) are below normal and about 200 below last year on this date. Planting is progressing as soils become fit; however, crop emergence has been slow. | Field Crop News
Alfalfa weevil is a major alfalfa pest in Ontario. Larvae feeding on alfalfa leaves can reduce both yield and forage quality. | Field Crop News
Field work progressed quickly across the province in the past week, with sunny skies and warm temperatures peaking on Friday, May 16th before scattered showers and below seasonal temperatures began on the Victoria Day long weekend. Widespread rainfall slowed field activities beginning mid-week. Soil temperatures have generally been cool, resulting in slow crop emergence and growth.| fieldcropnews.com
Interpreting the available nutrients in a fertilizer analysis| Field Crop News
Cereal leaf beetle (CLB) adults and eggs have been spotted at low levels in some of the YEN cereal sites being monitored this year. Best to scout fields with a known history of CLB activity soon and plan to check all cereal fields a few times over the next few weeks until the head is fully emerged to spot any infestations and injury.| Field Crop News
