Many Ontario canola producers tank mix boron with a preventative white mould fungicide and apply it at 20-50% bloom. We took a closer look at whether foliar boron reduces flower abortion or improves yield. […]
Cereals Since our last meeting cereal growth has been slow in much of the area. From May 1st to today about 65-75 growing degree days have accumulated in the area. Most of the wheat is still at GS 31 to GS 32 in with earlier planted fields approaching flag leaf and late planted fields still around GS 30. Very little progress on herbicide, fungicide and plant growth regulator […]
Weather: Warmer conditions starting late last week have fast-tracked crop growth. Tracking growing degree day (GDD) accumulation – Base 0 – for April and May in Huron county revealed 159 GGD in April and 244 GDD from May 1-25. Rainfall during the past week was sporadic with isolated thunderstorms resulting in flooded fields in […]
There is still a lot of field activity happening, but the real busy rush is starting to slow down. Accumulated heat units are shown in the table below. Thanks Bill Brown and FS Partners for sponsoring breakfast. The June 14 meeting was the last of the year at Mt Forest, and we thank everyone for participating. […]
The 2016-2017 version of OMAFRA Publication 812, Field Crop Protection Guide, and can be downloaded here or by clicking on the the book cover thumbnail below. Publication 812 is the source of pest control information for field crops. The easy to read tables provide information and comments on insect and disease control products for the major field crops […]
Corn Corn planting progress varies as you move across the province. The southwestern part of the province and the Niagara area has been cool and wet and the clay soils are less than 20% planted. Throughout much of the rest of the province conditions have been much more favourable with 60 to 80% of the […]
This spring’s challenging planting conditions has resulted in quite a few of uneven canola stands with both reduced populations and delayed emergence. This has some growers weighing the merits of applying a fungicide this season. Sclerotinia incidence varies greatly between fields and years thus making routine spraying of fungicide unprofitable. However when the risk of […]
As temperatures warm up, flea beetles are emerging and on the move. Feeding damage is evident in early emerged canola. Peak emergence from overwintering sites occurs once soil temperatures reaches 150 C (60 0 F). Depending on temperatures, flea beetles can take up to 3 weeks for all adults to emerge. Adults emerge overwinter in […]
by Brian Hall The summer emergence of flea beetles is upon us. In July larvae emerge from the soil and begin to feed on canola pods and leaves. Feeding during pod development can cause premature pod ripening, shrivelled seeds, pod shatter and allow fungal growth during wet weather. In most cases, although the damage can […]
Question: Once canola starts to bolt, do I need to be concerned about damage from Swede Midge. Answer: Yes. Canola is susceptible to significant damage up to secondary branch development. Once secondary branches begin to bud, canola is not subject to serious damage. The importance of secondary branches to yield depends on plant density. Under normal […]
Our trap counts of adult swede midge this week have spiked to high levels in some areas. To view a map indicating swede midge trap catches go to Ontario Canola Grower’s website at www.ontariocanolagrowers.ca. Regularly check this website for updates on the level of swede midge in your growing area until your canola is beyond the […]
Once canola starts to emerge, start scouting for flea beetles. Flea beetles are now very active and present in emerged canola. Canola will emerge quickly with forecast temperatures in high teens for the next week. Flea beetle damage is most severe the first two weeks after canola after canola seedling emergence. At the 3-4 leaf stage […]
Canola seedlings can with stand a considerable frost (-5 to -8 0 C) if plants have become acclimatized following a few days of cold temperatures. However, canola seedlings growing under warm conditions will be tender, and can be killed by even a f few degrees frost. Ice crystals will form on the leaf surface before […]