From OMAF Field Crop Report
Corn: Greg Stewart
Corn planting has come to an end in virtually all areas, with final plantings estimated to be down 10- 20% from last year.
Most corn moved through two leaf stages in the last week. Early corn is now at the 8th leaf stage and the growing point is at or slightly above the soil surface. Dry soils and seedbeds that are tight or have poor structure are limiting nodal root development in some areas.
Sidedressing is underway in many areas. A reminder that research has shown that UAN left uncovered in the bottom of a sidedress slot, especially if there is moisture present, can be susceptible to volatilization losses. When using pencil jet injectors be sure to adjust depths to provide soil cover. The Ontario Pre-Sidedress Nitrate (PSNT) Test Survey was conducted by OMAF Field Crop staff this week; see www.gocorn.net for the complete report.
Canola/Edible Beans: Brian Hall
Canola: Canola is growing rapidly and varies between 1 to 5 leaf stage. Emergence is acceptable but very uneven. For canola fields at or below 4-5 plants per square foot, consider lowering the action thresholds for insect and weeds. Flea beetle pressure is high in some areas. Spray if leaf loss exceeds 25%, paying particular attention to new growth. Sprays have no residual, scout several days later to evaluate flea beetle populations. Swede midge populations are increasing and at threshold in some areas. Northern Ontario has very high populations, and canola in this area that is between 2 leaf and early flowering should be protected with insecticide.
Edible Beans: Planting is 90% complete, emergence is uneven in some fields due to lack of soil moisture. A timely rotary hoe operation 7 – 10 days following planting will remove ‘hair size’ weeds while waiting on rain to activate soil applied herbicides, Scout emerged beans for leafhoppers.
Cereals: Peter Johnson
Winter wheat fusarium fungicides have been applied. Some growers opted out of fusarium fungicides, due to low fusarium risk and wheat crops that will be below crop insurance yield guarantees regardless. Thes